./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/chl-simpl-str-trans.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e04fb08f 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_6a587549-c624-4b7d-a90d-acf445a893ca/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a587549-c624-4b7d-a90d-acf445a893ca/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a587549-c624-4b7d-a90d-acf445a893ca/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a587549-c624-4b7d-a90d-acf445a893ca/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-simpl-str-trans.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a587549-c624-4b7d-a90d-acf445a893ca/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a587549-c624-4b7d-a90d-acf445a893ca/bin/uautomizer-tPACEb0tL8 --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 0b48bde914fb7ebeda4cbd6fd329f7fd1281e3c3e233b6f5149c7b66a2f709ab --- 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-e04fb08 [2022-11-16 11:53:57,091 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 11:53:57,093 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 11:53:57,132 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 11:53:57,134 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 11:53:57,135 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 11:53:57,138 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 11:53:57,143 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 11:53:57,150 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 11:53:57,151 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 11:53:57,152 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 11:53:57,153 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 11:53:57,155 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 11:53:57,158 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 11:53:57,159 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 11:53:57,161 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 11:53:57,163 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 11:53:57,165 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 11:53:57,167 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 11:53:57,169 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 11:53:57,170 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 11:53:57,172 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 11:53:57,179 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 11:53:57,180 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 11:53:57,184 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 11:53:57,184 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 11:53:57,184 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 11:53:57,185 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 11:53:57,185 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 11:53:57,186 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 11:53:57,187 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 11:53:57,187 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 11:53:57,188 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 11:53:57,189 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 11:53:57,190 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 11:53:57,190 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 11:53:57,195 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 11:53:57,196 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 11:53:57,196 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 11:53:57,197 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 11:53:57,197 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 11:53:57,198 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a587549-c624-4b7d-a90d-acf445a893ca/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-16 11:53:57,239 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 11:53:57,251 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 11:53:57,251 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 11:53:57,252 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 11:53:57,252 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 11:53:57,252 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 11:53:57,253 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 11:53:57,253 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 11:53:57,254 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 11:53:57,254 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 11:53:57,254 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 11:53:57,254 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 11:53:57,254 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 11:53:57,255 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 11:53:57,255 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 11:53:57,255 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 11:53:57,255 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 11:53:57,255 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 11:53:57,256 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-16 11:53:57,256 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 11:53:57,256 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 11:53:57,256 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 11:53:57,256 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 11:53:57,257 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 11:53:57,257 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 11:53:57,257 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 11:53:57,257 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:53:57,258 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 11:53:57,258 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 11:53:57,258 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 11:53:57,258 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 11:53:57,258 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 11:53:57,261 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 11:53:57,262 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 11:53:57,262 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 11:53:57,262 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_6a587549-c624-4b7d-a90d-acf445a893ca/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a587549-c624-4b7d-a90d-acf445a893ca/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0b48bde914fb7ebeda4cbd6fd329f7fd1281e3c3e233b6f5149c7b66a2f709ab [2022-11-16 11:53:57,503 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 11:53:57,534 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 11:53:57,537 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 11:53:57,538 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 11:53:57,539 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 11:53:57,540 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a587549-c624-4b7d-a90d-acf445a893ca/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/weaver/chl-simpl-str-trans.wvr.c [2022-11-16 11:53:57,608 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a587549-c624-4b7d-a90d-acf445a893ca/bin/uautomizer-tPACEb0tL8/data/034528c31/37016e821d94467a998617ddb50aab7e/FLAG4623b62f4 [2022-11-16 11:53:58,016 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 11:53:58,016 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a587549-c624-4b7d-a90d-acf445a893ca/sv-benchmarks/c/weaver/chl-simpl-str-trans.wvr.c [2022-11-16 11:53:58,023 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a587549-c624-4b7d-a90d-acf445a893ca/bin/uautomizer-tPACEb0tL8/data/034528c31/37016e821d94467a998617ddb50aab7e/FLAG4623b62f4 [2022-11-16 11:53:58,039 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a587549-c624-4b7d-a90d-acf445a893ca/bin/uautomizer-tPACEb0tL8/data/034528c31/37016e821d94467a998617ddb50aab7e [2022-11-16 11:53:58,041 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 11:53:58,044 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 11:53:58,046 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 11:53:58,046 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 11:53:58,050 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 11:53:58,051 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:53:58" (1/1) ... [2022-11-16 11:53:58,052 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f9ef055 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:53:58, skipping insertion in model container [2022-11-16 11:53:58,052 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:53:58" (1/1) ... [2022-11-16 11:53:58,060 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 11:53:58,078 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:53:58,287 WARN L229 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_6a587549-c624-4b7d-a90d-acf445a893ca/sv-benchmarks/c/weaver/chl-simpl-str-trans.wvr.c[2514,2527] [2022-11-16 11:53:58,291 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:53:58,298 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 11:53:58,321 WARN L229 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_6a587549-c624-4b7d-a90d-acf445a893ca/sv-benchmarks/c/weaver/chl-simpl-str-trans.wvr.c[2514,2527] [2022-11-16 11:53:58,332 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:53:58,348 INFO L208 MainTranslator]: Completed translation [2022-11-16 11:53:58,349 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:53:58 WrapperNode [2022-11-16 11:53:58,349 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 11:53:58,350 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 11:53:58,350 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 11:53:58,350 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 11:53:58,358 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:53:58" (1/1) ... [2022-11-16 11:53:58,366 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:53:58" (1/1) ... [2022-11-16 11:53:58,393 INFO L138 Inliner]: procedures = 23, calls = 30, calls flagged for inlining = 8, calls inlined = 12, statements flattened = 205 [2022-11-16 11:53:58,394 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 11:53:58,394 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 11:53:58,395 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 11:53:58,395 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 11:53:58,404 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:53:58" (1/1) ... [2022-11-16 11:53:58,404 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:53:58" (1/1) ... [2022-11-16 11:53:58,407 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:53:58" (1/1) ... [2022-11-16 11:53:58,408 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:53:58" (1/1) ... [2022-11-16 11:53:58,414 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:53:58" (1/1) ... [2022-11-16 11:53:58,416 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:53:58" (1/1) ... [2022-11-16 11:53:58,418 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:53:58" (1/1) ... [2022-11-16 11:53:58,420 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:53:58" (1/1) ... [2022-11-16 11:53:58,422 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 11:53:58,423 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 11:53:58,423 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 11:53:58,424 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 11:53:58,425 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:53:58" (1/1) ... [2022-11-16 11:53:58,433 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:53:58,446 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a587549-c624-4b7d-a90d-acf445a893ca/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:53:58,458 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a587549-c624-4b7d-a90d-acf445a893ca/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 11:53:58,494 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a587549-c624-4b7d-a90d-acf445a893ca/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 11:53:58,521 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 11:53:58,521 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-16 11:53:58,521 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-16 11:53:58,522 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-16 11:53:58,522 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-16 11:53:58,523 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-16 11:53:58,524 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-16 11:53:58,524 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 11:53:58,524 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 11:53:58,524 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 11:53:58,524 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 11:53:58,525 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 11:53:58,525 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 11:53:58,525 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 11:53:58,527 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-16 11:53:58,699 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 11:53:58,701 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 11:53:59,111 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 11:53:59,126 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 11:53:59,126 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-16 11:53:59,129 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:53:59 BoogieIcfgContainer [2022-11-16 11:53:59,129 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 11:53:59,131 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 11:53:59,131 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 11:53:59,135 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 11:53:59,135 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:53:58" (1/3) ... [2022-11-16 11:53:59,136 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a1b4e7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:53:59, skipping insertion in model container [2022-11-16 11:53:59,136 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:53:58" (2/3) ... [2022-11-16 11:53:59,136 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a1b4e7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:53:59, skipping insertion in model container [2022-11-16 11:53:59,137 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:53:59" (3/3) ... [2022-11-16 11:53:59,138 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-simpl-str-trans.wvr.c [2022-11-16 11:53:59,146 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 11:53:59,157 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 11:53:59,157 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2022-11-16 11:53:59,157 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 11:53:59,327 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-16 11:53:59,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 268 places, 277 transitions, 578 flow [2022-11-16 11:53:59,536 INFO L130 PetriNetUnfolder]: 19/274 cut-off events. [2022-11-16 11:53:59,537 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-16 11:53:59,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 287 conditions, 274 events. 19/274 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 727 event pairs, 0 based on Foata normal form. 0/237 useless extension candidates. Maximal degree in co-relation 205. Up to 2 conditions per place. [2022-11-16 11:53:59,552 INFO L82 GeneralOperation]: Start removeDead. Operand has 268 places, 277 transitions, 578 flow [2022-11-16 11:53:59,560 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 245 places, 253 transitions, 521 flow [2022-11-16 11:53:59,571 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:53:59,578 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;@5543625, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:53:59,578 INFO L358 AbstractCegarLoop]: Starting to check reachability of 39 error locations. [2022-11-16 11:53:59,599 INFO L130 PetriNetUnfolder]: 2/89 cut-off events. [2022-11-16 11:53:59,599 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 11:53:59,599 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:53:59,600 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] [2022-11-16 11:53:59,601 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-16 11:53:59,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:53:59,606 INFO L85 PathProgramCache]: Analyzing trace with hash -2126661228, now seen corresponding path program 1 times [2022-11-16 11:53:59,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:53:59,617 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103763375] [2022-11-16 11:53:59,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:53:59,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:53:59,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:54:00,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:54:00,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:54:00,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103763375] [2022-11-16 11:54:00,027 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103763375] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:54:00,027 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:54:00,028 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:54:00,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514471320] [2022-11-16 11:54:00,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:54:00,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:54:00,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:54:00,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:54:00,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:54:00,103 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 237 out of 277 [2022-11-16 11:54:00,114 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 253 transitions, 521 flow. Second operand has 6 states, 6 states have (on average 238.83333333333334) internal successors, (1433), 6 states have internal predecessors, (1433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:00,124 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:54:00,124 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 237 of 277 [2022-11-16 11:54:00,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:54:00,458 INFO L130 PetriNetUnfolder]: 113/666 cut-off events. [2022-11-16 11:54:00,458 INFO L131 PetriNetUnfolder]: For 79/79 co-relation queries the response was YES. [2022-11-16 11:54:00,468 INFO L83 FinitePrefix]: Finished finitePrefix Result has 990 conditions, 666 events. 113/666 cut-off events. For 79/79 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 3809 event pairs, 2 based on Foata normal form. 112/686 useless extension candidates. Maximal degree in co-relation 841. Up to 165 conditions per place. [2022-11-16 11:54:00,475 INFO L137 encePairwiseOnDemand]: 265/277 looper letters, 33 selfloop transitions, 5 changer transitions 0/254 dead transitions. [2022-11-16 11:54:00,475 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 254 transitions, 617 flow [2022-11-16 11:54:00,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 11:54:00,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-16 11:54:00,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1475 transitions. [2022-11-16 11:54:00,493 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8874849578820698 [2022-11-16 11:54:00,494 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1475 transitions. [2022-11-16 11:54:00,495 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1475 transitions. [2022-11-16 11:54:00,498 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:54:00,501 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1475 transitions. [2022-11-16 11:54:00,506 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 245.83333333333334) internal successors, (1475), 6 states have internal predecessors, (1475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:00,516 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 277.0) internal successors, (1939), 7 states have internal predecessors, (1939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:00,517 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 277.0) internal successors, (1939), 7 states have internal predecessors, (1939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:00,519 INFO L175 Difference]: Start difference. First operand has 245 places, 253 transitions, 521 flow. Second operand 6 states and 1475 transitions. [2022-11-16 11:54:00,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 254 transitions, 617 flow [2022-11-16 11:54:00,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 254 transitions, 598 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-16 11:54:00,529 INFO L231 Difference]: Finished difference. Result has 244 places, 246 transitions, 508 flow [2022-11-16 11:54:00,531 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=277, PETRI_DIFFERENCE_MINUEND_FLOW=498, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=508, PETRI_PLACES=244, PETRI_TRANSITIONS=246} [2022-11-16 11:54:00,535 INFO L288 CegarLoopForPetriNet]: 245 programPoint places, -1 predicate places. [2022-11-16 11:54:00,535 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 246 transitions, 508 flow [2022-11-16 11:54:00,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 238.83333333333334) internal successors, (1433), 6 states have internal predecessors, (1433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:00,536 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:54:00,537 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] [2022-11-16 11:54:00,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 11:54:00,537 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-16 11:54:00,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:54:00,538 INFO L85 PathProgramCache]: Analyzing trace with hash -1501987942, now seen corresponding path program 1 times [2022-11-16 11:54:00,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:54:00,538 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055725038] [2022-11-16 11:54:00,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:54:00,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:54:00,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:54:00,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:54:00,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:54:00,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055725038] [2022-11-16 11:54:00,700 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055725038] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:54:00,701 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:54:00,701 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:54:00,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556409517] [2022-11-16 11:54:00,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:54:00,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:54:00,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:54:00,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:54:00,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:54:00,705 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 240 out of 277 [2022-11-16 11:54:00,706 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 246 transitions, 508 flow. Second operand has 4 states, 4 states have (on average 241.75) internal successors, (967), 4 states have internal predecessors, (967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:00,706 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:54:00,707 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 240 of 277 [2022-11-16 11:54:00,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:54:00,984 INFO L130 PetriNetUnfolder]: 87/780 cut-off events. [2022-11-16 11:54:00,984 INFO L131 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES. [2022-11-16 11:54:00,994 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1033 conditions, 780 events. 87/780 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 5092 event pairs, 24 based on Foata normal form. 0/663 useless extension candidates. Maximal degree in co-relation 668. Up to 71 conditions per place. [2022-11-16 11:54:01,001 INFO L137 encePairwiseOnDemand]: 271/277 looper letters, 37 selfloop transitions, 4 changer transitions 0/260 dead transitions. [2022-11-16 11:54:01,001 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 260 transitions, 626 flow [2022-11-16 11:54:01,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:54:01,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 11:54:01,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1003 transitions. [2022-11-16 11:54:01,004 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9052346570397112 [2022-11-16 11:54:01,004 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1003 transitions. [2022-11-16 11:54:01,004 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1003 transitions. [2022-11-16 11:54:01,005 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:54:01,005 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1003 transitions. [2022-11-16 11:54:01,008 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 250.75) internal successors, (1003), 4 states have internal predecessors, (1003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:01,010 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 277.0) internal successors, (1385), 5 states have internal predecessors, (1385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:01,011 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 277.0) internal successors, (1385), 5 states have internal predecessors, (1385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:01,011 INFO L175 Difference]: Start difference. First operand has 244 places, 246 transitions, 508 flow. Second operand 4 states and 1003 transitions. [2022-11-16 11:54:01,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 260 transitions, 626 flow [2022-11-16 11:54:01,014 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 260 transitions, 617 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-16 11:54:01,017 INFO L231 Difference]: Finished difference. Result has 245 places, 247 transitions, 523 flow [2022-11-16 11:54:01,018 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=277, PETRI_DIFFERENCE_MINUEND_FLOW=497, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=523, PETRI_PLACES=245, PETRI_TRANSITIONS=247} [2022-11-16 11:54:01,019 INFO L288 CegarLoopForPetriNet]: 245 programPoint places, 0 predicate places. [2022-11-16 11:54:01,019 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 247 transitions, 523 flow [2022-11-16 11:54:01,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 241.75) internal successors, (967), 4 states have internal predecessors, (967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:01,020 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:54:01,020 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] [2022-11-16 11:54:01,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 11:54:01,020 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-16 11:54:01,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:54:01,021 INFO L85 PathProgramCache]: Analyzing trace with hash -664990514, now seen corresponding path program 1 times [2022-11-16 11:54:01,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:54:01,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618782789] [2022-11-16 11:54:01,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:54:01,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:54:01,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:54:01,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:54:01,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:54:01,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618782789] [2022-11-16 11:54:01,208 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618782789] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:54:01,208 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:54:01,208 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:54:01,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247451784] [2022-11-16 11:54:01,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:54:01,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:54:01,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:54:01,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:54:01,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:54:01,213 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 237 out of 277 [2022-11-16 11:54:01,215 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 247 transitions, 523 flow. Second operand has 6 states, 6 states have (on average 239.0) internal successors, (1434), 6 states have internal predecessors, (1434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:01,215 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:54:01,215 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 237 of 277 [2022-11-16 11:54:01,216 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:54:01,719 INFO L130 PetriNetUnfolder]: 254/1686 cut-off events. [2022-11-16 11:54:01,719 INFO L131 PetriNetUnfolder]: For 123/355 co-relation queries the response was YES. [2022-11-16 11:54:01,729 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2135 conditions, 1686 events. 254/1686 cut-off events. For 123/355 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 13579 event pairs, 20 based on Foata normal form. 0/1366 useless extension candidates. Maximal degree in co-relation 1600. Up to 327 conditions per place. [2022-11-16 11:54:01,742 INFO L137 encePairwiseOnDemand]: 271/277 looper letters, 32 selfloop transitions, 5 changer transitions 0/253 dead transitions. [2022-11-16 11:54:01,742 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 253 transitions, 616 flow [2022-11-16 11:54:01,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 11:54:01,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-16 11:54:01,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1460 transitions. [2022-11-16 11:54:01,746 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8784596871239471 [2022-11-16 11:54:01,748 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1460 transitions. [2022-11-16 11:54:01,748 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1460 transitions. [2022-11-16 11:54:01,749 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:54:01,749 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1460 transitions. [2022-11-16 11:54:01,752 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 243.33333333333334) internal successors, (1460), 6 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) [2022-11-16 11:54:01,755 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 277.0) internal successors, (1939), 7 states have internal predecessors, (1939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:01,757 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 277.0) internal successors, (1939), 7 states have internal predecessors, (1939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:01,757 INFO L175 Difference]: Start difference. First operand has 245 places, 247 transitions, 523 flow. Second operand 6 states and 1460 transitions. [2022-11-16 11:54:01,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 253 transitions, 616 flow [2022-11-16 11:54:01,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 253 transitions, 616 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 11:54:01,762 INFO L231 Difference]: Finished difference. Result has 249 places, 246 transitions, 531 flow [2022-11-16 11:54:01,763 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=277, PETRI_DIFFERENCE_MINUEND_FLOW=521, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=531, PETRI_PLACES=249, PETRI_TRANSITIONS=246} [2022-11-16 11:54:01,765 INFO L288 CegarLoopForPetriNet]: 245 programPoint places, 4 predicate places. [2022-11-16 11:54:01,765 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 246 transitions, 531 flow [2022-11-16 11:54:01,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 239.0) internal successors, (1434), 6 states have internal predecessors, (1434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:01,767 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:54:01,767 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] [2022-11-16 11:54:01,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 11:54:01,767 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-16 11:54:01,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:54:01,768 INFO L85 PathProgramCache]: Analyzing trace with hash 860131294, now seen corresponding path program 1 times [2022-11-16 11:54:01,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:54:01,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472763317] [2022-11-16 11:54:01,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:54:01,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:54:01,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:54:01,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:54:01,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:54:01,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472763317] [2022-11-16 11:54:01,914 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472763317] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:54:01,914 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:54:01,914 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:54:01,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844856800] [2022-11-16 11:54:01,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:54:01,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:54:01,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:54:01,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:54:01,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:54:01,917 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 240 out of 277 [2022-11-16 11:54:01,919 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 246 transitions, 531 flow. Second operand has 4 states, 4 states have (on average 242.0) internal successors, (968), 4 states have internal predecessors, (968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:01,919 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:54:01,919 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 240 of 277 [2022-11-16 11:54:01,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:54:02,266 INFO L130 PetriNetUnfolder]: 138/945 cut-off events. [2022-11-16 11:54:02,266 INFO L131 PetriNetUnfolder]: For 104/378 co-relation queries the response was YES. [2022-11-16 11:54:02,277 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1309 conditions, 945 events. 138/945 cut-off events. For 104/378 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 7022 event pairs, 48 based on Foata normal form. 0/776 useless extension candidates. Maximal degree in co-relation 1060. Up to 126 conditions per place. [2022-11-16 11:54:02,289 INFO L137 encePairwiseOnDemand]: 271/277 looper letters, 36 selfloop transitions, 4 changer transitions 0/259 dead transitions. [2022-11-16 11:54:02,289 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 259 transitions, 644 flow [2022-11-16 11:54:02,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:54:02,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 11:54:02,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1002 transitions. [2022-11-16 11:54:02,292 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9043321299638989 [2022-11-16 11:54:02,292 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1002 transitions. [2022-11-16 11:54:02,292 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1002 transitions. [2022-11-16 11:54:02,293 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:54:02,293 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1002 transitions. [2022-11-16 11:54:02,295 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 250.5) internal successors, (1002), 4 states have internal predecessors, (1002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:02,298 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 277.0) internal successors, (1385), 5 states have internal predecessors, (1385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:02,299 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 277.0) internal successors, (1385), 5 states have internal predecessors, (1385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:02,299 INFO L175 Difference]: Start difference. First operand has 249 places, 246 transitions, 531 flow. Second operand 4 states and 1002 transitions. [2022-11-16 11:54:02,299 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 259 transitions, 644 flow [2022-11-16 11:54:02,301 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 259 transitions, 635 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-16 11:54:02,304 INFO L231 Difference]: Finished difference. Result has 250 places, 247 transitions, 546 flow [2022-11-16 11:54:02,305 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=277, PETRI_DIFFERENCE_MINUEND_FLOW=520, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=546, PETRI_PLACES=250, PETRI_TRANSITIONS=247} [2022-11-16 11:54:02,306 INFO L288 CegarLoopForPetriNet]: 245 programPoint places, 5 predicate places. [2022-11-16 11:54:02,306 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 247 transitions, 546 flow [2022-11-16 11:54:02,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 242.0) internal successors, (968), 4 states have internal predecessors, (968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:02,307 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:54:02,307 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] [2022-11-16 11:54:02,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 11:54:02,307 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-16 11:54:02,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:54:02,308 INFO L85 PathProgramCache]: Analyzing trace with hash 1903561217, now seen corresponding path program 1 times [2022-11-16 11:54:02,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:54:02,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246602046] [2022-11-16 11:54:02,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:54:02,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:54:02,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:54:02,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:54:02,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:54:02,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246602046] [2022-11-16 11:54:02,393 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246602046] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:54:02,393 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:54:02,393 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:54:02,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303773668] [2022-11-16 11:54:02,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:54:02,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:54:02,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:54:02,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:54:02,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:54:02,396 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 240 out of 277 [2022-11-16 11:54:02,398 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 247 transitions, 546 flow. Second operand has 4 states, 4 states have (on average 242.25) internal successors, (969), 4 states have internal predecessors, (969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:02,398 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:54:02,398 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 240 of 277 [2022-11-16 11:54:02,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:54:02,674 INFO L130 PetriNetUnfolder]: 81/918 cut-off events. [2022-11-16 11:54:02,674 INFO L131 PetriNetUnfolder]: For 55/59 co-relation queries the response was YES. [2022-11-16 11:54:02,683 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1238 conditions, 918 events. 81/918 cut-off events. For 55/59 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 6394 event pairs, 24 based on Foata normal form. 3/803 useless extension candidates. Maximal degree in co-relation 1062. Up to 72 conditions per place. [2022-11-16 11:54:02,691 INFO L137 encePairwiseOnDemand]: 273/277 looper letters, 37 selfloop transitions, 3 changer transitions 0/259 dead transitions. [2022-11-16 11:54:02,691 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 259 transitions, 654 flow [2022-11-16 11:54:02,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:54:02,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 11:54:02,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1001 transitions. [2022-11-16 11:54:02,694 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9034296028880866 [2022-11-16 11:54:02,694 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1001 transitions. [2022-11-16 11:54:02,694 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1001 transitions. [2022-11-16 11:54:02,695 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:54:02,695 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1001 transitions. [2022-11-16 11:54:02,697 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 250.25) internal successors, (1001), 4 states have internal predecessors, (1001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:02,700 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 277.0) internal successors, (1385), 5 states have internal predecessors, (1385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:02,700 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 277.0) internal successors, (1385), 5 states have internal predecessors, (1385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:02,700 INFO L175 Difference]: Start difference. First operand has 250 places, 247 transitions, 546 flow. Second operand 4 states and 1001 transitions. [2022-11-16 11:54:02,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 259 transitions, 654 flow [2022-11-16 11:54:02,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 259 transitions, 652 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:54:02,706 INFO L231 Difference]: Finished difference. Result has 252 places, 246 transitions, 544 flow [2022-11-16 11:54:02,707 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=277, PETRI_DIFFERENCE_MINUEND_FLOW=538, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=544, PETRI_PLACES=252, PETRI_TRANSITIONS=246} [2022-11-16 11:54:02,710 INFO L288 CegarLoopForPetriNet]: 245 programPoint places, 7 predicate places. [2022-11-16 11:54:02,710 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 246 transitions, 544 flow [2022-11-16 11:54:02,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 242.25) internal successors, (969), 4 states have internal predecessors, (969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:02,713 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:54:02,713 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] [2022-11-16 11:54:02,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 11:54:02,713 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-16 11:54:02,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:54:02,715 INFO L85 PathProgramCache]: Analyzing trace with hash -1119143714, now seen corresponding path program 1 times [2022-11-16 11:54:02,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:54:02,715 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119505993] [2022-11-16 11:54:02,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:54:02,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:54:02,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:54:02,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:54:02,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:54:02,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119505993] [2022-11-16 11:54:02,847 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119505993] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:54:02,847 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:54:02,848 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:54:02,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867115344] [2022-11-16 11:54:02,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:54:02,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:54:02,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:54:02,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:54:02,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:54:02,851 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 237 out of 277 [2022-11-16 11:54:02,853 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 246 transitions, 544 flow. Second operand has 6 states, 6 states have (on average 239.16666666666666) internal successors, (1435), 6 states have internal predecessors, (1435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:02,853 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:54:02,853 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 237 of 277 [2022-11-16 11:54:02,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:54:03,199 INFO L130 PetriNetUnfolder]: 131/991 cut-off events. [2022-11-16 11:54:03,200 INFO L131 PetriNetUnfolder]: For 44/44 co-relation queries the response was YES. [2022-11-16 11:54:03,209 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1465 conditions, 991 events. 131/991 cut-off events. For 44/44 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 6887 event pairs, 2 based on Foata normal form. 0/889 useless extension candidates. Maximal degree in co-relation 1289. Up to 217 conditions per place. [2022-11-16 11:54:03,218 INFO L137 encePairwiseOnDemand]: 271/277 looper letters, 31 selfloop transitions, 5 changer transitions 0/253 dead transitions. [2022-11-16 11:54:03,218 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 253 transitions, 638 flow [2022-11-16 11:54:03,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 11:54:03,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-16 11:54:03,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1459 transitions. [2022-11-16 11:54:03,222 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8778580024067388 [2022-11-16 11:54:03,222 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1459 transitions. [2022-11-16 11:54:03,222 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1459 transitions. [2022-11-16 11:54:03,223 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:54:03,223 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1459 transitions. [2022-11-16 11:54:03,227 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 243.16666666666666) internal successors, (1459), 6 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) [2022-11-16 11:54:03,229 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 277.0) internal successors, (1939), 7 states have internal predecessors, (1939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:03,230 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 277.0) internal successors, (1939), 7 states have internal predecessors, (1939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:03,231 INFO L175 Difference]: Start difference. First operand has 252 places, 246 transitions, 544 flow. Second operand 6 states and 1459 transitions. [2022-11-16 11:54:03,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 253 transitions, 638 flow [2022-11-16 11:54:03,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 253 transitions, 633 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 11:54:03,236 INFO L231 Difference]: Finished difference. Result has 254 places, 245 transitions, 547 flow [2022-11-16 11:54:03,236 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=277, PETRI_DIFFERENCE_MINUEND_FLOW=537, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=547, PETRI_PLACES=254, PETRI_TRANSITIONS=245} [2022-11-16 11:54:03,237 INFO L288 CegarLoopForPetriNet]: 245 programPoint places, 9 predicate places. [2022-11-16 11:54:03,237 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 245 transitions, 547 flow [2022-11-16 11:54:03,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 239.16666666666666) internal successors, (1435), 6 states have internal predecessors, (1435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:03,238 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:54:03,239 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] [2022-11-16 11:54:03,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 11:54:03,239 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-16 11:54:03,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:54:03,240 INFO L85 PathProgramCache]: Analyzing trace with hash -879934367, now seen corresponding path program 1 times [2022-11-16 11:54:03,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:54:03,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702247049] [2022-11-16 11:54:03,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:54:03,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:54:03,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:54:03,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:54:03,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:54:03,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702247049] [2022-11-16 11:54:03,328 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702247049] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:54:03,328 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:54:03,328 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:54:03,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420986147] [2022-11-16 11:54:03,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:54:03,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:54:03,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:54:03,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:54:03,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:54:03,332 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 236 out of 277 [2022-11-16 11:54:03,333 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 245 transitions, 547 flow. Second operand has 5 states, 5 states have (on average 238.6) internal successors, (1193), 5 states have internal predecessors, (1193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:03,333 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:54:03,333 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 236 of 277 [2022-11-16 11:54:03,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:54:03,633 INFO L130 PetriNetUnfolder]: 95/947 cut-off events. [2022-11-16 11:54:03,634 INFO L131 PetriNetUnfolder]: For 38/42 co-relation queries the response was YES. [2022-11-16 11:54:03,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1327 conditions, 947 events. 95/947 cut-off events. For 38/42 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 6793 event pairs, 30 based on Foata normal form. 0/832 useless extension candidates. Maximal degree in co-relation 1151. Up to 90 conditions per place. [2022-11-16 11:54:03,657 INFO L137 encePairwiseOnDemand]: 270/277 looper letters, 44 selfloop transitions, 7 changer transitions 0/266 dead transitions. [2022-11-16 11:54:03,657 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 266 transitions, 703 flow [2022-11-16 11:54:03,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 11:54:03,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-16 11:54:03,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1468 transitions. [2022-11-16 11:54:03,661 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8832731648616126 [2022-11-16 11:54:03,661 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1468 transitions. [2022-11-16 11:54:03,661 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1468 transitions. [2022-11-16 11:54:03,662 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:54:03,663 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1468 transitions. [2022-11-16 11:54:03,666 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 244.66666666666666) internal successors, (1468), 6 states have internal predecessors, (1468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:03,669 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 277.0) internal successors, (1939), 7 states have internal predecessors, (1939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:03,670 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 277.0) internal successors, (1939), 7 states have internal predecessors, (1939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:03,670 INFO L175 Difference]: Start difference. First operand has 254 places, 245 transitions, 547 flow. Second operand 6 states and 1468 transitions. [2022-11-16 11:54:03,670 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 266 transitions, 703 flow [2022-11-16 11:54:03,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 266 transitions, 689 flow, removed 1 selfloop flow, removed 6 redundant places. [2022-11-16 11:54:03,683 INFO L231 Difference]: Finished difference. Result has 255 places, 248 transitions, 568 flow [2022-11-16 11:54:03,684 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=277, PETRI_DIFFERENCE_MINUEND_FLOW=529, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=568, PETRI_PLACES=255, PETRI_TRANSITIONS=248} [2022-11-16 11:54:03,685 INFO L288 CegarLoopForPetriNet]: 245 programPoint places, 10 predicate places. [2022-11-16 11:54:03,686 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 248 transitions, 568 flow [2022-11-16 11:54:03,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 238.6) internal successors, (1193), 5 states have internal predecessors, (1193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:03,686 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:54:03,687 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] [2022-11-16 11:54:03,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 11:54:03,687 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-16 11:54:03,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:54:03,691 INFO L85 PathProgramCache]: Analyzing trace with hash -1844755451, now seen corresponding path program 1 times [2022-11-16 11:54:03,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:54:03,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818297814] [2022-11-16 11:54:03,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:54:03,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:54:03,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:54:03,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:54:03,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:54:03,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818297814] [2022-11-16 11:54:03,812 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818297814] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:54:03,813 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:54:03,813 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:54:03,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747003147] [2022-11-16 11:54:03,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:54:03,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:54:03,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:54:03,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:54:03,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:54:03,817 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 237 out of 277 [2022-11-16 11:54:03,819 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 248 transitions, 568 flow. Second operand has 6 states, 6 states have (on average 239.16666666666666) internal successors, (1435), 6 states have internal predecessors, (1435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:03,819 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:54:03,819 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 237 of 277 [2022-11-16 11:54:03,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:54:04,295 INFO L130 PetriNetUnfolder]: 375/1876 cut-off events. [2022-11-16 11:54:04,296 INFO L131 PetriNetUnfolder]: For 292/298 co-relation queries the response was YES. [2022-11-16 11:54:04,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2649 conditions, 1876 events. 375/1876 cut-off events. For 292/298 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 15568 event pairs, 4 based on Foata normal form. 0/1496 useless extension candidates. Maximal degree in co-relation 2466. Up to 574 conditions per place. [2022-11-16 11:54:04,317 INFO L137 encePairwiseOnDemand]: 271/277 looper letters, 31 selfloop transitions, 5 changer transitions 0/253 dead transitions. [2022-11-16 11:54:04,318 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 253 transitions, 654 flow [2022-11-16 11:54:04,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 11:54:04,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-16 11:54:04,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1459 transitions. [2022-11-16 11:54:04,321 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8778580024067388 [2022-11-16 11:54:04,321 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1459 transitions. [2022-11-16 11:54:04,322 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1459 transitions. [2022-11-16 11:54:04,326 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:54:04,327 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1459 transitions. [2022-11-16 11:54:04,330 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 243.16666666666666) internal successors, (1459), 6 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) [2022-11-16 11:54:04,333 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 277.0) internal successors, (1939), 7 states have internal predecessors, (1939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:04,334 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 277.0) internal successors, (1939), 7 states have internal predecessors, (1939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:04,334 INFO L175 Difference]: Start difference. First operand has 255 places, 248 transitions, 568 flow. Second operand 6 states and 1459 transitions. [2022-11-16 11:54:04,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 253 transitions, 654 flow [2022-11-16 11:54:04,337 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 253 transitions, 651 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:54:04,341 INFO L231 Difference]: Finished difference. Result has 258 places, 247 transitions, 573 flow [2022-11-16 11:54:04,342 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=277, PETRI_DIFFERENCE_MINUEND_FLOW=563, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=573, PETRI_PLACES=258, PETRI_TRANSITIONS=247} [2022-11-16 11:54:04,344 INFO L288 CegarLoopForPetriNet]: 245 programPoint places, 13 predicate places. [2022-11-16 11:54:04,344 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 247 transitions, 573 flow [2022-11-16 11:54:04,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 239.16666666666666) internal successors, (1435), 6 states have internal predecessors, (1435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:04,345 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:54:04,345 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:54:04,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 11:54:04,346 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-16 11:54:04,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:54:04,346 INFO L85 PathProgramCache]: Analyzing trace with hash -1352843323, now seen corresponding path program 1 times [2022-11-16 11:54:04,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:54:04,347 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791830718] [2022-11-16 11:54:04,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:54:04,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:54:04,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:54:04,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:54:04,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:54:04,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791830718] [2022-11-16 11:54:04,430 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791830718] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:54:04,430 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:54:04,431 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:54:04,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631065605] [2022-11-16 11:54:04,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:54:04,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:54:04,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:54:04,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:54:04,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:54:04,433 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 240 out of 277 [2022-11-16 11:54:04,435 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 247 transitions, 573 flow. Second operand has 4 states, 4 states have (on average 242.25) internal successors, (969), 4 states have internal predecessors, (969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:04,435 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:54:04,435 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 240 of 277 [2022-11-16 11:54:04,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:54:04,888 INFO L130 PetriNetUnfolder]: 368/1772 cut-off events. [2022-11-16 11:54:04,888 INFO L131 PetriNetUnfolder]: For 369/629 co-relation queries the response was YES. [2022-11-16 11:54:04,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2578 conditions, 1772 events. 368/1772 cut-off events. For 369/629 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 17019 event pairs, 144 based on Foata normal form. 0/1356 useless extension candidates. Maximal degree in co-relation 2500. Up to 338 conditions per place. [2022-11-16 11:54:04,911 INFO L137 encePairwiseOnDemand]: 271/277 looper letters, 35 selfloop transitions, 4 changer transitions 0/259 dead transitions. [2022-11-16 11:54:04,911 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 259 transitions, 679 flow [2022-11-16 11:54:04,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:54:04,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 11:54:04,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1001 transitions. [2022-11-16 11:54:04,914 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9034296028880866 [2022-11-16 11:54:04,915 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1001 transitions. [2022-11-16 11:54:04,915 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1001 transitions. [2022-11-16 11:54:04,916 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:54:04,916 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1001 transitions. [2022-11-16 11:54:04,919 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 250.25) internal successors, (1001), 4 states have internal predecessors, (1001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:04,921 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 277.0) internal successors, (1385), 5 states have internal predecessors, (1385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:04,922 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 277.0) internal successors, (1385), 5 states have internal predecessors, (1385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:04,922 INFO L175 Difference]: Start difference. First operand has 258 places, 247 transitions, 573 flow. Second operand 4 states and 1001 transitions. [2022-11-16 11:54:04,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 259 transitions, 679 flow [2022-11-16 11:54:04,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 259 transitions, 670 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-16 11:54:04,927 INFO L231 Difference]: Finished difference. Result has 259 places, 248 transitions, 588 flow [2022-11-16 11:54:04,928 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=277, PETRI_DIFFERENCE_MINUEND_FLOW=562, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=588, PETRI_PLACES=259, PETRI_TRANSITIONS=248} [2022-11-16 11:54:04,929 INFO L288 CegarLoopForPetriNet]: 245 programPoint places, 14 predicate places. [2022-11-16 11:54:04,929 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 248 transitions, 588 flow [2022-11-16 11:54:04,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 242.25) internal successors, (969), 4 states have internal predecessors, (969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:04,947 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:54:04,947 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] [2022-11-16 11:54:04,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-16 11:54:04,947 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-16 11:54:04,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:54:04,948 INFO L85 PathProgramCache]: Analyzing trace with hash 599333189, now seen corresponding path program 1 times [2022-11-16 11:54:04,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:54:04,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369860018] [2022-11-16 11:54:04,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:54:04,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:54:04,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:54:05,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:54:05,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:54:05,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369860018] [2022-11-16 11:54:05,036 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369860018] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:54:05,039 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:54:05,040 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:54:05,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027592911] [2022-11-16 11:54:05,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:54:05,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:54:05,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:54:05,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:54:05,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:54:05,045 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 240 out of 277 [2022-11-16 11:54:05,047 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 248 transitions, 588 flow. Second operand has 4 states, 4 states have (on average 242.5) internal successors, (970), 4 states have internal predecessors, (970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:05,048 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:54:05,048 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 240 of 277 [2022-11-16 11:54:05,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:54:05,431 INFO L130 PetriNetUnfolder]: 129/1067 cut-off events. [2022-11-16 11:54:05,432 INFO L131 PetriNetUnfolder]: For 168/442 co-relation queries the response was YES. [2022-11-16 11:54:05,449 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1519 conditions, 1067 events. 129/1067 cut-off events. For 168/442 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 8271 event pairs, 48 based on Foata normal form. 5/912 useless extension candidates. Maximal degree in co-relation 1351. Up to 121 conditions per place. [2022-11-16 11:54:05,460 INFO L137 encePairwiseOnDemand]: 273/277 looper letters, 36 selfloop transitions, 3 changer transitions 0/259 dead transitions. [2022-11-16 11:54:05,460 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 259 transitions, 691 flow [2022-11-16 11:54:05,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:54:05,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 11:54:05,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1000 transitions. [2022-11-16 11:54:05,463 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9025270758122743 [2022-11-16 11:54:05,463 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1000 transitions. [2022-11-16 11:54:05,464 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1000 transitions. [2022-11-16 11:54:05,464 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:54:05,464 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1000 transitions. [2022-11-16 11:54:05,467 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 250.0) internal successors, (1000), 4 states have internal predecessors, (1000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:05,469 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 277.0) internal successors, (1385), 5 states have internal predecessors, (1385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:05,470 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 277.0) internal successors, (1385), 5 states have internal predecessors, (1385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:05,470 INFO L175 Difference]: Start difference. First operand has 259 places, 248 transitions, 588 flow. Second operand 4 states and 1000 transitions. [2022-11-16 11:54:05,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 259 transitions, 691 flow [2022-11-16 11:54:05,473 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 259 transitions, 689 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:54:05,476 INFO L231 Difference]: Finished difference. Result has 261 places, 247 transitions, 586 flow [2022-11-16 11:54:05,478 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=277, PETRI_DIFFERENCE_MINUEND_FLOW=580, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=586, PETRI_PLACES=261, PETRI_TRANSITIONS=247} [2022-11-16 11:54:05,478 INFO L288 CegarLoopForPetriNet]: 245 programPoint places, 16 predicate places. [2022-11-16 11:54:05,479 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 247 transitions, 586 flow [2022-11-16 11:54:05,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 242.5) internal successors, (970), 4 states have internal predecessors, (970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:05,479 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:54:05,479 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] [2022-11-16 11:54:05,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-16 11:54:05,480 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-16 11:54:05,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:54:05,480 INFO L85 PathProgramCache]: Analyzing trace with hash -1588430077, now seen corresponding path program 1 times [2022-11-16 11:54:05,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:54:05,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221380489] [2022-11-16 11:54:05,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:54:05,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:54:05,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:54:05,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:54:05,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:54:05,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221380489] [2022-11-16 11:54:05,626 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221380489] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:54:05,626 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:54:05,626 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 11:54:05,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907706688] [2022-11-16 11:54:05,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:54:05,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 11:54:05,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:54:05,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 11:54:05,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:54:05,631 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 232 out of 277 [2022-11-16 11:54:05,633 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 247 transitions, 586 flow. Second operand has 8 states, 8 states have (on average 234.0) internal successors, (1872), 8 states have internal predecessors, (1872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:05,633 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:54:05,633 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 232 of 277 [2022-11-16 11:54:05,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:54:06,030 INFO L130 PetriNetUnfolder]: 123/1153 cut-off events. [2022-11-16 11:54:06,031 INFO L131 PetriNetUnfolder]: For 93/282 co-relation queries the response was YES. [2022-11-16 11:54:06,044 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1688 conditions, 1153 events. 123/1153 cut-off events. For 93/282 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 7813 event pairs, 4 based on Foata normal form. 8/1047 useless extension candidates. Maximal degree in co-relation 1500. Up to 126 conditions per place. [2022-11-16 11:54:06,051 INFO L137 encePairwiseOnDemand]: 267/277 looper letters, 41 selfloop transitions, 11 changer transitions 0/263 dead transitions. [2022-11-16 11:54:06,052 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 263 transitions, 736 flow [2022-11-16 11:54:06,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 11:54:06,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-16 11:54:06,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1906 transitions. [2022-11-16 11:54:06,056 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8601083032490975 [2022-11-16 11:54:06,056 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1906 transitions. [2022-11-16 11:54:06,056 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1906 transitions. [2022-11-16 11:54:06,058 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:54:06,058 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1906 transitions. [2022-11-16 11:54:06,062 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 238.25) internal successors, (1906), 8 states have internal predecessors, (1906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:06,065 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 277.0) internal successors, (2493), 9 states have internal predecessors, (2493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:06,066 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 277.0) internal successors, (2493), 9 states have internal predecessors, (2493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:06,066 INFO L175 Difference]: Start difference. First operand has 261 places, 247 transitions, 586 flow. Second operand 8 states and 1906 transitions. [2022-11-16 11:54:06,066 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 263 transitions, 736 flow [2022-11-16 11:54:06,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 263 transitions, 731 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 11:54:06,073 INFO L231 Difference]: Finished difference. Result has 268 places, 248 transitions, 617 flow [2022-11-16 11:54:06,074 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=277, PETRI_DIFFERENCE_MINUEND_FLOW=581, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=617, PETRI_PLACES=268, PETRI_TRANSITIONS=248} [2022-11-16 11:54:06,074 INFO L288 CegarLoopForPetriNet]: 245 programPoint places, 23 predicate places. [2022-11-16 11:54:06,074 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 248 transitions, 617 flow [2022-11-16 11:54:06,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 234.0) internal successors, (1872), 8 states have internal predecessors, (1872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:06,075 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:54:06,075 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] [2022-11-16 11:54:06,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-16 11:54:06,076 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-16 11:54:06,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:54:06,076 INFO L85 PathProgramCache]: Analyzing trace with hash 1399460440, now seen corresponding path program 1 times [2022-11-16 11:54:06,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:54:06,077 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079150012] [2022-11-16 11:54:06,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:54:06,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:54:06,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:54:06,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:54:06,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:54:06,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079150012] [2022-11-16 11:54:06,158 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079150012] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:54:06,158 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:54:06,158 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:54:06,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87280375] [2022-11-16 11:54:06,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:54:06,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:54:06,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:54:06,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:54:06,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:54:06,161 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 237 out of 277 [2022-11-16 11:54:06,163 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 248 transitions, 617 flow. Second operand has 6 states, 6 states have (on average 239.33333333333334) internal successors, (1436), 6 states have internal predecessors, (1436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:06,163 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:54:06,163 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 237 of 277 [2022-11-16 11:54:06,163 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:54:06,843 INFO L130 PetriNetUnfolder]: 299/2594 cut-off events. [2022-11-16 11:54:06,843 INFO L131 PetriNetUnfolder]: For 242/508 co-relation queries the response was YES. [2022-11-16 11:54:06,862 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3459 conditions, 2594 events. 299/2594 cut-off events. For 242/508 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 24148 event pairs, 20 based on Foata normal form. 0/2234 useless extension candidates. Maximal degree in co-relation 2665. Up to 427 conditions per place. [2022-11-16 11:54:06,875 INFO L137 encePairwiseOnDemand]: 271/277 looper letters, 30 selfloop transitions, 5 changer transitions 0/254 dead transitions. [2022-11-16 11:54:06,875 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 254 transitions, 706 flow [2022-11-16 11:54:06,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 11:54:06,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-16 11:54:06,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1458 transitions. [2022-11-16 11:54:06,879 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8772563176895307 [2022-11-16 11:54:06,879 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1458 transitions. [2022-11-16 11:54:06,879 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1458 transitions. [2022-11-16 11:54:06,880 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:54:06,880 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1458 transitions. [2022-11-16 11:54:06,883 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 243.0) internal successors, (1458), 6 states have internal predecessors, (1458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:06,886 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 277.0) internal successors, (1939), 7 states have internal predecessors, (1939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:06,887 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 277.0) internal successors, (1939), 7 states have internal predecessors, (1939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:06,887 INFO L175 Difference]: Start difference. First operand has 268 places, 248 transitions, 617 flow. Second operand 6 states and 1458 transitions. [2022-11-16 11:54:06,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 254 transitions, 706 flow [2022-11-16 11:54:06,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 254 transitions, 697 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-16 11:54:06,893 INFO L231 Difference]: Finished difference. Result has 268 places, 247 transitions, 616 flow [2022-11-16 11:54:06,894 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=277, PETRI_DIFFERENCE_MINUEND_FLOW=606, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=616, PETRI_PLACES=268, PETRI_TRANSITIONS=247} [2022-11-16 11:54:06,894 INFO L288 CegarLoopForPetriNet]: 245 programPoint places, 23 predicate places. [2022-11-16 11:54:06,894 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 247 transitions, 616 flow [2022-11-16 11:54:06,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 239.33333333333334) internal successors, (1436), 6 states have internal predecessors, (1436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:06,895 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:54:06,895 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] [2022-11-16 11:54:06,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-16 11:54:06,896 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-16 11:54:06,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:54:06,896 INFO L85 PathProgramCache]: Analyzing trace with hash -1996691416, now seen corresponding path program 1 times [2022-11-16 11:54:06,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:54:06,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947435095] [2022-11-16 11:54:06,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:54:06,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:54:06,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:54:07,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:54:07,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:54:07,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947435095] [2022-11-16 11:54:07,032 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947435095] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:54:07,033 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:54:07,033 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 11:54:07,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144778282] [2022-11-16 11:54:07,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:54:07,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 11:54:07,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:54:07,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 11:54:07,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:54:07,037 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 232 out of 277 [2022-11-16 11:54:07,039 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 247 transitions, 616 flow. Second operand has 8 states, 8 states have (on average 234.125) internal successors, (1873), 8 states have internal predecessors, (1873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:07,039 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:54:07,039 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 232 of 277 [2022-11-16 11:54:07,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:54:07,515 INFO L130 PetriNetUnfolder]: 111/1136 cut-off events. [2022-11-16 11:54:07,515 INFO L131 PetriNetUnfolder]: For 120/285 co-relation queries the response was YES. [2022-11-16 11:54:07,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1688 conditions, 1136 events. 111/1136 cut-off events. For 120/285 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 7568 event pairs, 4 based on Foata normal form. 8/1039 useless extension candidates. Maximal degree in co-relation 1500. Up to 119 conditions per place. [2022-11-16 11:54:07,531 INFO L137 encePairwiseOnDemand]: 267/277 looper letters, 43 selfloop transitions, 9 changer transitions 0/264 dead transitions. [2022-11-16 11:54:07,531 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 264 transitions, 770 flow [2022-11-16 11:54:07,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 11:54:07,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-16 11:54:07,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1908 transitions. [2022-11-16 11:54:07,536 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8610108303249098 [2022-11-16 11:54:07,536 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1908 transitions. [2022-11-16 11:54:07,536 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1908 transitions. [2022-11-16 11:54:07,537 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:54:07,538 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1908 transitions. [2022-11-16 11:54:07,541 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 238.5) internal successors, (1908), 8 states have internal predecessors, (1908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:07,545 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 277.0) internal successors, (2493), 9 states have internal predecessors, (2493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:07,545 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 277.0) internal successors, (2493), 9 states have internal predecessors, (2493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:07,546 INFO L175 Difference]: Start difference. First operand has 268 places, 247 transitions, 616 flow. Second operand 8 states and 1908 transitions. [2022-11-16 11:54:07,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 264 transitions, 770 flow [2022-11-16 11:54:07,548 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 264 transitions, 761 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-16 11:54:07,552 INFO L231 Difference]: Finished difference. Result has 273 places, 248 transitions, 637 flow [2022-11-16 11:54:07,552 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=277, PETRI_DIFFERENCE_MINUEND_FLOW=607, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=637, PETRI_PLACES=273, PETRI_TRANSITIONS=248} [2022-11-16 11:54:07,553 INFO L288 CegarLoopForPetriNet]: 245 programPoint places, 28 predicate places. [2022-11-16 11:54:07,553 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 248 transitions, 637 flow [2022-11-16 11:54:07,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 234.125) internal successors, (1873), 8 states have internal predecessors, (1873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:07,554 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:54:07,554 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] [2022-11-16 11:54:07,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-16 11:54:07,554 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-16 11:54:07,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:54:07,555 INFO L85 PathProgramCache]: Analyzing trace with hash 1432071963, now seen corresponding path program 1 times [2022-11-16 11:54:07,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:54:07,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937446429] [2022-11-16 11:54:07,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:54:07,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:54:07,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:54:07,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:54:07,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:54:07,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937446429] [2022-11-16 11:54:07,640 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937446429] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:54:07,640 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:54:07,640 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:54:07,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295168966] [2022-11-16 11:54:07,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:54:07,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:54:07,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:54:07,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:54:07,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:54:07,643 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 236 out of 277 [2022-11-16 11:54:07,644 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 248 transitions, 637 flow. Second operand has 5 states, 5 states have (on average 238.8) internal successors, (1194), 5 states have internal predecessors, (1194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:07,644 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:54:07,645 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 236 of 277 [2022-11-16 11:54:07,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:54:08,118 INFO L130 PetriNetUnfolder]: 157/1119 cut-off events. [2022-11-16 11:54:08,118 INFO L131 PetriNetUnfolder]: For 172/514 co-relation queries the response was YES. [2022-11-16 11:54:08,135 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1678 conditions, 1119 events. 157/1119 cut-off events. For 172/514 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 9097 event pairs, 60 based on Foata normal form. 0/958 useless extension candidates. Maximal degree in co-relation 1506. Up to 153 conditions per place. [2022-11-16 11:54:08,148 INFO L137 encePairwiseOnDemand]: 270/277 looper letters, 43 selfloop transitions, 7 changer transitions 0/268 dead transitions. [2022-11-16 11:54:08,148 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 268 transitions, 788 flow [2022-11-16 11:54:08,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 11:54:08,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-16 11:54:08,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1467 transitions. [2022-11-16 11:54:08,153 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8826714801444043 [2022-11-16 11:54:08,153 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1467 transitions. [2022-11-16 11:54:08,153 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1467 transitions. [2022-11-16 11:54:08,155 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:54:08,155 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1467 transitions. [2022-11-16 11:54:08,158 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 244.5) internal successors, (1467), 6 states have internal predecessors, (1467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:08,161 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 277.0) internal successors, (1939), 7 states have internal predecessors, (1939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:08,162 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 277.0) internal successors, (1939), 7 states have internal predecessors, (1939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:08,162 INFO L175 Difference]: Start difference. First operand has 273 places, 248 transitions, 637 flow. Second operand 6 states and 1467 transitions. [2022-11-16 11:54:08,163 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 268 transitions, 788 flow [2022-11-16 11:54:08,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 268 transitions, 774 flow, removed 1 selfloop flow, removed 6 redundant places. [2022-11-16 11:54:08,170 INFO L231 Difference]: Finished difference. Result has 274 places, 251 transitions, 658 flow [2022-11-16 11:54:08,170 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=277, PETRI_DIFFERENCE_MINUEND_FLOW=619, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=658, PETRI_PLACES=274, PETRI_TRANSITIONS=251} [2022-11-16 11:54:08,171 INFO L288 CegarLoopForPetriNet]: 245 programPoint places, 29 predicate places. [2022-11-16 11:54:08,171 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 251 transitions, 658 flow [2022-11-16 11:54:08,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 238.8) internal successors, (1194), 5 states have internal predecessors, (1194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:08,172 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:54:08,172 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] [2022-11-16 11:54:08,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-16 11:54:08,173 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-16 11:54:08,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:54:08,173 INFO L85 PathProgramCache]: Analyzing trace with hash 802900876, now seen corresponding path program 1 times [2022-11-16 11:54:08,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:54:08,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439982864] [2022-11-16 11:54:08,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:54:08,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:54:08,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:54:08,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:54:08,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:54:08,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439982864] [2022-11-16 11:54:08,345 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439982864] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:54:08,345 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:54:08,345 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:54:08,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442741276] [2022-11-16 11:54:08,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:54:08,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:54:08,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:54:08,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:54:08,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:54:08,349 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 230 out of 277 [2022-11-16 11:54:08,351 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 251 transitions, 658 flow. Second operand has 6 states, 6 states have (on average 233.33333333333334) internal successors, (1400), 6 states have internal predecessors, (1400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:08,351 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:54:08,351 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 230 of 277 [2022-11-16 11:54:08,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:54:08,763 INFO L130 PetriNetUnfolder]: 114/894 cut-off events. [2022-11-16 11:54:08,764 INFO L131 PetriNetUnfolder]: For 132/136 co-relation queries the response was YES. [2022-11-16 11:54:08,776 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1532 conditions, 894 events. 114/894 cut-off events. For 132/136 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 6353 event pairs, 58 based on Foata normal form. 3/824 useless extension candidates. Maximal degree in co-relation 1413. Up to 153 conditions per place. [2022-11-16 11:54:08,783 INFO L137 encePairwiseOnDemand]: 269/277 looper letters, 49 selfloop transitions, 7 changer transitions 0/267 dead transitions. [2022-11-16 11:54:08,783 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 267 transitions, 817 flow [2022-11-16 11:54:08,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 11:54:08,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 11:54:08,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1663 transitions. [2022-11-16 11:54:08,787 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8576585869004641 [2022-11-16 11:54:08,788 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1663 transitions. [2022-11-16 11:54:08,788 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1663 transitions. [2022-11-16 11:54:08,789 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:54:08,789 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1663 transitions. [2022-11-16 11:54:08,792 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 237.57142857142858) internal successors, (1663), 7 states have internal predecessors, (1663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:08,795 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 277.0) internal successors, (2216), 8 states have internal predecessors, (2216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:08,796 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 277.0) internal successors, (2216), 8 states have internal predecessors, (2216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:08,796 INFO L175 Difference]: Start difference. First operand has 274 places, 251 transitions, 658 flow. Second operand 7 states and 1663 transitions. [2022-11-16 11:54:08,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 267 transitions, 817 flow [2022-11-16 11:54:08,799 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 267 transitions, 811 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 11:54:08,803 INFO L231 Difference]: Finished difference. Result has 281 places, 254 transitions, 688 flow [2022-11-16 11:54:08,804 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=277, PETRI_DIFFERENCE_MINUEND_FLOW=648, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=688, PETRI_PLACES=281, PETRI_TRANSITIONS=254} [2022-11-16 11:54:08,804 INFO L288 CegarLoopForPetriNet]: 245 programPoint places, 36 predicate places. [2022-11-16 11:54:08,805 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 254 transitions, 688 flow [2022-11-16 11:54:08,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 233.33333333333334) internal successors, (1400), 6 states have internal predecessors, (1400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:08,805 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:54:08,806 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] [2022-11-16 11:54:08,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-16 11:54:08,806 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-16 11:54:08,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:54:08,807 INFO L85 PathProgramCache]: Analyzing trace with hash -152845688, now seen corresponding path program 1 times [2022-11-16 11:54:08,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:54:08,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369131996] [2022-11-16 11:54:08,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:54:08,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:54:08,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:54:08,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:54:08,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:54:08,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369131996] [2022-11-16 11:54:08,954 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369131996] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:54:08,954 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:54:08,954 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:54:08,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316844426] [2022-11-16 11:54:08,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:54:08,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:54:08,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:54:08,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:54:08,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:54:08,960 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 230 out of 277 [2022-11-16 11:54:08,962 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 254 transitions, 688 flow. Second operand has 6 states, 6 states have (on average 233.5) internal successors, (1401), 6 states have internal predecessors, (1401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:08,962 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:54:08,962 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 230 of 277 [2022-11-16 11:54:08,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:54:09,321 INFO L130 PetriNetUnfolder]: 108/885 cut-off events. [2022-11-16 11:54:09,322 INFO L131 PetriNetUnfolder]: For 146/150 co-relation queries the response was YES. [2022-11-16 11:54:09,333 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1578 conditions, 885 events. 108/885 cut-off events. For 146/150 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 6249 event pairs, 46 based on Foata normal form. 3/829 useless extension candidates. Maximal degree in co-relation 1456. Up to 126 conditions per place. [2022-11-16 11:54:09,340 INFO L137 encePairwiseOnDemand]: 269/277 looper letters, 55 selfloop transitions, 8 changer transitions 0/276 dead transitions. [2022-11-16 11:54:09,340 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 276 transitions, 890 flow [2022-11-16 11:54:09,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 11:54:09,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 11:54:09,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1669 transitions. [2022-11-16 11:54:09,344 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8607529654461062 [2022-11-16 11:54:09,345 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1669 transitions. [2022-11-16 11:54:09,345 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1669 transitions. [2022-11-16 11:54:09,346 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:54:09,346 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1669 transitions. [2022-11-16 11:54:09,349 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 238.42857142857142) internal successors, (1669), 7 states have internal predecessors, (1669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:09,352 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 277.0) internal successors, (2216), 8 states have internal predecessors, (2216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:09,353 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 277.0) internal successors, (2216), 8 states have internal predecessors, (2216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:09,354 INFO L175 Difference]: Start difference. First operand has 281 places, 254 transitions, 688 flow. Second operand 7 states and 1669 transitions. [2022-11-16 11:54:09,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 276 transitions, 890 flow [2022-11-16 11:54:09,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 276 transitions, 888 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:54:09,361 INFO L231 Difference]: Finished difference. Result has 289 places, 258 transitions, 735 flow [2022-11-16 11:54:09,361 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=277, PETRI_DIFFERENCE_MINUEND_FLOW=682, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=735, PETRI_PLACES=289, PETRI_TRANSITIONS=258} [2022-11-16 11:54:09,362 INFO L288 CegarLoopForPetriNet]: 245 programPoint places, 44 predicate places. [2022-11-16 11:54:09,364 INFO L495 AbstractCegarLoop]: Abstraction has has 289 places, 258 transitions, 735 flow [2022-11-16 11:54:09,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 233.5) internal successors, (1401), 6 states have internal predecessors, (1401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:09,365 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:54:09,365 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] [2022-11-16 11:54:09,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-16 11:54:09,366 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-16 11:54:09,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:54:09,366 INFO L85 PathProgramCache]: Analyzing trace with hash -15634132, now seen corresponding path program 1 times [2022-11-16 11:54:09,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:54:09,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790824881] [2022-11-16 11:54:09,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:54:09,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:54:09,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:54:09,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:54:09,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:54:09,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790824881] [2022-11-16 11:54:09,440 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790824881] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:54:09,440 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:54:09,440 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:54:09,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459971266] [2022-11-16 11:54:09,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:54:09,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:54:09,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:54:09,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:54:09,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:54:09,443 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 240 out of 277 [2022-11-16 11:54:09,444 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 258 transitions, 735 flow. Second operand has 4 states, 4 states have (on average 242.75) internal successors, (971), 4 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:09,444 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:54:09,444 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 240 of 277 [2022-11-16 11:54:09,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:54:09,911 INFO L130 PetriNetUnfolder]: 354/1760 cut-off events. [2022-11-16 11:54:09,911 INFO L131 PetriNetUnfolder]: For 526/784 co-relation queries the response was YES. [2022-11-16 11:54:09,927 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2757 conditions, 1760 events. 354/1760 cut-off events. For 526/784 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 17135 event pairs, 144 based on Foata normal form. 13/1394 useless extension candidates. Maximal degree in co-relation 2669. Up to 316 conditions per place. [2022-11-16 11:54:09,936 INFO L137 encePairwiseOnDemand]: 273/277 looper letters, 35 selfloop transitions, 3 changer transitions 0/268 dead transitions. [2022-11-16 11:54:09,936 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 268 transitions, 831 flow [2022-11-16 11:54:10,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:54:10,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 11:54:10,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 999 transitions. [2022-11-16 11:54:10,006 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9016245487364621 [2022-11-16 11:54:10,006 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 999 transitions. [2022-11-16 11:54:10,006 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 999 transitions. [2022-11-16 11:54:10,007 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:54:10,007 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 999 transitions. [2022-11-16 11:54:10,009 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 249.75) internal successors, (999), 4 states have internal predecessors, (999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:10,011 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 277.0) internal successors, (1385), 5 states have internal predecessors, (1385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:10,012 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 277.0) internal successors, (1385), 5 states have internal predecessors, (1385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:10,012 INFO L175 Difference]: Start difference. First operand has 289 places, 258 transitions, 735 flow. Second operand 4 states and 999 transitions. [2022-11-16 11:54:10,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 268 transitions, 831 flow [2022-11-16 11:54:10,015 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 268 transitions, 829 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:54:10,018 INFO L231 Difference]: Finished difference. Result has 291 places, 257 transitions, 733 flow [2022-11-16 11:54:10,020 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=277, PETRI_DIFFERENCE_MINUEND_FLOW=727, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=733, PETRI_PLACES=291, PETRI_TRANSITIONS=257} [2022-11-16 11:54:10,020 INFO L288 CegarLoopForPetriNet]: 245 programPoint places, 46 predicate places. [2022-11-16 11:54:10,020 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 257 transitions, 733 flow [2022-11-16 11:54:10,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 242.75) internal successors, (971), 4 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:10,021 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:54:10,021 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] [2022-11-16 11:54:10,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-16 11:54:10,022 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-16 11:54:10,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:54:10,022 INFO L85 PathProgramCache]: Analyzing trace with hash 1949702205, now seen corresponding path program 1 times [2022-11-16 11:54:10,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:54:10,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515771827] [2022-11-16 11:54:10,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:54:10,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:54:10,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:54:10,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:54:10,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:54:10,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515771827] [2022-11-16 11:54:10,174 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515771827] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:54:10,175 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:54:10,175 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 11:54:10,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775063088] [2022-11-16 11:54:10,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:54:10,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 11:54:10,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:54:10,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 11:54:10,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:54:10,179 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 232 out of 277 [2022-11-16 11:54:10,180 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 257 transitions, 733 flow. Second operand has 8 states, 8 states have (on average 234.125) internal successors, (1873), 8 states have internal predecessors, (1873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:10,181 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:54:10,181 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 232 of 277 [2022-11-16 11:54:10,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:54:10,787 INFO L130 PetriNetUnfolder]: 241/1764 cut-off events. [2022-11-16 11:54:10,788 INFO L131 PetriNetUnfolder]: For 311/496 co-relation queries the response was YES. [2022-11-16 11:54:10,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2868 conditions, 1764 events. 241/1764 cut-off events. For 311/496 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 15461 event pairs, 7 based on Foata normal form. 2/1588 useless extension candidates. Maximal degree in co-relation 2595. Up to 209 conditions per place. [2022-11-16 11:54:10,831 INFO L137 encePairwiseOnDemand]: 267/277 looper letters, 40 selfloop transitions, 11 changer transitions 0/272 dead transitions. [2022-11-16 11:54:10,831 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 272 transitions, 878 flow [2022-11-16 11:54:10,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 11:54:10,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-16 11:54:10,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1905 transitions. [2022-11-16 11:54:10,837 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8596570397111913 [2022-11-16 11:54:10,837 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1905 transitions. [2022-11-16 11:54:10,838 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1905 transitions. [2022-11-16 11:54:10,839 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:54:10,839 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1905 transitions. [2022-11-16 11:54:10,844 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 238.125) internal successors, (1905), 8 states have internal predecessors, (1905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:10,848 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 277.0) internal successors, (2493), 9 states have internal predecessors, (2493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:10,848 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 277.0) internal successors, (2493), 9 states have internal predecessors, (2493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:10,849 INFO L175 Difference]: Start difference. First operand has 291 places, 257 transitions, 733 flow. Second operand 8 states and 1905 transitions. [2022-11-16 11:54:10,849 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 272 transitions, 878 flow [2022-11-16 11:54:10,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 272 transitions, 873 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 11:54:10,857 INFO L231 Difference]: Finished difference. Result has 298 places, 258 transitions, 764 flow [2022-11-16 11:54:10,857 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=277, PETRI_DIFFERENCE_MINUEND_FLOW=728, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=246, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=764, PETRI_PLACES=298, PETRI_TRANSITIONS=258} [2022-11-16 11:54:10,858 INFO L288 CegarLoopForPetriNet]: 245 programPoint places, 53 predicate places. [2022-11-16 11:54:10,858 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 258 transitions, 764 flow [2022-11-16 11:54:10,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 234.125) internal successors, (1873), 8 states have internal predecessors, (1873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:10,859 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:54:10,859 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] [2022-11-16 11:54:10,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-16 11:54:10,859 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-16 11:54:10,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:54:10,860 INFO L85 PathProgramCache]: Analyzing trace with hash -484657265, now seen corresponding path program 1 times [2022-11-16 11:54:10,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:54:10,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240778251] [2022-11-16 11:54:10,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:54:10,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:54:10,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:54:10,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:54:10,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:54:10,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240778251] [2022-11-16 11:54:10,965 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240778251] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:54:10,965 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:54:10,965 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:54:10,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315429417] [2022-11-16 11:54:10,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:54:10,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:54:10,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:54:10,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:54:10,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:54:10,969 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 237 out of 277 [2022-11-16 11:54:10,971 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 258 transitions, 764 flow. Second operand has 6 states, 6 states have (on average 239.5) internal successors, (1437), 6 states have internal predecessors, (1437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:10,971 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:54:10,971 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 237 of 277 [2022-11-16 11:54:10,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:54:11,643 INFO L130 PetriNetUnfolder]: 448/2549 cut-off events. [2022-11-16 11:54:11,644 INFO L131 PetriNetUnfolder]: For 594/600 co-relation queries the response was YES. [2022-11-16 11:54:11,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3949 conditions, 2549 events. 448/2549 cut-off events. For 594/600 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 23427 event pairs, 4 based on Foata normal form. 0/2131 useless extension candidates. Maximal degree in co-relation 3719. Up to 737 conditions per place. [2022-11-16 11:54:11,682 INFO L137 encePairwiseOnDemand]: 271/277 looper letters, 29 selfloop transitions, 5 changer transitions 0/263 dead transitions. [2022-11-16 11:54:11,683 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 263 transitions, 850 flow [2022-11-16 11:54:11,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 11:54:11,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-16 11:54:11,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1457 transitions. [2022-11-16 11:54:11,685 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8766546329723225 [2022-11-16 11:54:11,686 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1457 transitions. [2022-11-16 11:54:11,686 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1457 transitions. [2022-11-16 11:54:11,686 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:54:11,686 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1457 transitions. [2022-11-16 11:54:11,689 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 242.83333333333334) internal successors, (1457), 6 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) [2022-11-16 11:54:11,691 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 277.0) internal successors, (1939), 7 states have internal predecessors, (1939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:11,692 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 277.0) internal successors, (1939), 7 states have internal predecessors, (1939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:11,692 INFO L175 Difference]: Start difference. First operand has 298 places, 258 transitions, 764 flow. Second operand 6 states and 1457 transitions. [2022-11-16 11:54:11,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 263 transitions, 850 flow [2022-11-16 11:54:11,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 263 transitions, 837 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-16 11:54:11,701 INFO L231 Difference]: Finished difference. Result has 298 places, 257 transitions, 763 flow [2022-11-16 11:54:11,702 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=277, PETRI_DIFFERENCE_MINUEND_FLOW=753, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=763, PETRI_PLACES=298, PETRI_TRANSITIONS=257} [2022-11-16 11:54:11,703 INFO L288 CegarLoopForPetriNet]: 245 programPoint places, 53 predicate places. [2022-11-16 11:54:11,703 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 257 transitions, 763 flow [2022-11-16 11:54:11,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 239.5) internal successors, (1437), 6 states have internal predecessors, (1437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:11,704 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:54:11,704 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] [2022-11-16 11:54:11,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-16 11:54:11,704 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-16 11:54:11,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:54:11,705 INFO L85 PathProgramCache]: Analyzing trace with hash 311226988, now seen corresponding path program 1 times [2022-11-16 11:54:11,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:54:11,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896381388] [2022-11-16 11:54:11,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:54:11,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:54:11,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:54:11,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:54:11,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:54:11,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896381388] [2022-11-16 11:54:11,846 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896381388] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:54:11,847 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:54:11,847 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 11:54:11,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526969487] [2022-11-16 11:54:11,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:54:11,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 11:54:11,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:54:11,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 11:54:11,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:54:11,850 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 232 out of 277 [2022-11-16 11:54:11,852 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 257 transitions, 763 flow. Second operand has 8 states, 8 states have (on average 234.25) internal successors, (1874), 8 states have internal predecessors, (1874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:11,852 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:54:11,852 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 232 of 277 [2022-11-16 11:54:11,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:54:12,358 INFO L130 PetriNetUnfolder]: 205/1309 cut-off events. [2022-11-16 11:54:12,358 INFO L131 PetriNetUnfolder]: For 339/339 co-relation queries the response was YES. [2022-11-16 11:54:12,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2389 conditions, 1309 events. 205/1309 cut-off events. For 339/339 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 10159 event pairs, 2 based on Foata normal form. 0/1203 useless extension candidates. Maximal degree in co-relation 2316. Up to 195 conditions per place. [2022-11-16 11:54:12,391 INFO L137 encePairwiseOnDemand]: 267/277 looper letters, 42 selfloop transitions, 9 changer transitions 0/273 dead transitions. [2022-11-16 11:54:12,392 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 273 transitions, 912 flow [2022-11-16 11:54:12,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 11:54:12,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-16 11:54:12,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1907 transitions. [2022-11-16 11:54:12,395 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8605595667870036 [2022-11-16 11:54:12,395 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1907 transitions. [2022-11-16 11:54:12,395 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1907 transitions. [2022-11-16 11:54:12,396 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:54:12,396 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1907 transitions. [2022-11-16 11:54:12,399 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 238.375) internal successors, (1907), 8 states have internal predecessors, (1907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:12,403 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 277.0) internal successors, (2493), 9 states have internal predecessors, (2493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:12,404 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 277.0) internal successors, (2493), 9 states have internal predecessors, (2493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:12,404 INFO L175 Difference]: Start difference. First operand has 298 places, 257 transitions, 763 flow. Second operand 8 states and 1907 transitions. [2022-11-16 11:54:12,404 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 273 transitions, 912 flow [2022-11-16 11:54:12,409 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 273 transitions, 903 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-16 11:54:12,413 INFO L231 Difference]: Finished difference. Result has 303 places, 258 transitions, 784 flow [2022-11-16 11:54:12,414 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=277, PETRI_DIFFERENCE_MINUEND_FLOW=754, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=784, PETRI_PLACES=303, PETRI_TRANSITIONS=258} [2022-11-16 11:54:12,414 INFO L288 CegarLoopForPetriNet]: 245 programPoint places, 58 predicate places. [2022-11-16 11:54:12,414 INFO L495 AbstractCegarLoop]: Abstraction has has 303 places, 258 transitions, 784 flow [2022-11-16 11:54:12,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 234.25) internal successors, (1874), 8 states have internal predecessors, (1874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:12,415 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:54:12,415 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] [2022-11-16 11:54:12,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-16 11:54:12,416 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-16 11:54:12,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:54:12,416 INFO L85 PathProgramCache]: Analyzing trace with hash -1023808942, now seen corresponding path program 1 times [2022-11-16 11:54:12,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:54:12,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471938436] [2022-11-16 11:54:12,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:54:12,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:54:12,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:54:12,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:54:12,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:54:12,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471938436] [2022-11-16 11:54:12,480 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471938436] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:54:12,480 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:54:12,480 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:54:12,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084013724] [2022-11-16 11:54:12,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:54:12,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:54:12,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:54:12,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:54:12,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:54:12,484 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 240 out of 277 [2022-11-16 11:54:12,485 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 258 transitions, 784 flow. Second operand has 4 states, 4 states have (on average 243.0) internal successors, (972), 4 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:12,485 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:54:12,486 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 240 of 277 [2022-11-16 11:54:12,486 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:54:13,059 INFO L130 PetriNetUnfolder]: 437/2141 cut-off events. [2022-11-16 11:54:13,060 INFO L131 PetriNetUnfolder]: For 518/822 co-relation queries the response was YES. [2022-11-16 11:54:13,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3355 conditions, 2141 events. 437/2141 cut-off events. For 518/822 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 21971 event pairs, 216 based on Foata normal form. 13/1689 useless extension candidates. Maximal degree in co-relation 3260. Up to 466 conditions per place. [2022-11-16 11:54:13,089 INFO L137 encePairwiseOnDemand]: 273/277 looper letters, 32 selfloop transitions, 3 changer transitions 0/268 dead transitions. [2022-11-16 11:54:13,089 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 268 transitions, 876 flow [2022-11-16 11:54:13,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:54:13,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 11:54:13,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 996 transitions. [2022-11-16 11:54:13,093 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8989169675090253 [2022-11-16 11:54:13,094 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 996 transitions. [2022-11-16 11:54:13,094 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 996 transitions. [2022-11-16 11:54:13,094 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:54:13,094 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 996 transitions. [2022-11-16 11:54:13,096 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 249.0) internal successors, (996), 4 states have internal predecessors, (996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:13,098 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 277.0) internal successors, (1385), 5 states have internal predecessors, (1385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:13,099 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 277.0) internal successors, (1385), 5 states have internal predecessors, (1385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:13,099 INFO L175 Difference]: Start difference. First operand has 303 places, 258 transitions, 784 flow. Second operand 4 states and 996 transitions. [2022-11-16 11:54:13,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 268 transitions, 876 flow [2022-11-16 11:54:13,103 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 268 transitions, 865 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-16 11:54:13,106 INFO L231 Difference]: Finished difference. Result has 301 places, 258 transitions, 782 flow [2022-11-16 11:54:13,106 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=277, PETRI_DIFFERENCE_MINUEND_FLOW=769, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=782, PETRI_PLACES=301, PETRI_TRANSITIONS=258} [2022-11-16 11:54:13,107 INFO L288 CegarLoopForPetriNet]: 245 programPoint places, 56 predicate places. [2022-11-16 11:54:13,107 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 258 transitions, 782 flow [2022-11-16 11:54:13,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 243.0) internal successors, (972), 4 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:13,108 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:54:13,108 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] [2022-11-16 11:54:13,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-16 11:54:13,108 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-16 11:54:13,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:54:13,109 INFO L85 PathProgramCache]: Analyzing trace with hash -1785602928, now seen corresponding path program 1 times [2022-11-16 11:54:13,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:54:13,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660113080] [2022-11-16 11:54:13,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:54:13,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:54:13,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:54:13,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:54:13,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:54:13,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660113080] [2022-11-16 11:54:13,230 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660113080] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:54:13,230 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:54:13,230 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:54:13,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054202026] [2022-11-16 11:54:13,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:54:13,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:54:13,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:54:13,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:54:13,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:54:13,233 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 230 out of 277 [2022-11-16 11:54:13,235 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 258 transitions, 782 flow. Second operand has 6 states, 6 states have (on average 233.5) internal successors, (1401), 6 states have internal predecessors, (1401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:13,235 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:54:13,235 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 230 of 277 [2022-11-16 11:54:13,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:54:13,833 INFO L130 PetriNetUnfolder]: 210/1103 cut-off events. [2022-11-16 11:54:13,834 INFO L131 PetriNetUnfolder]: For 369/668 co-relation queries the response was YES. [2022-11-16 11:54:13,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2050 conditions, 1103 events. 210/1103 cut-off events. For 369/668 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 9284 event pairs, 116 based on Foata normal form. 5/960 useless extension candidates. Maximal degree in co-relation 1870. Up to 271 conditions per place. [2022-11-16 11:54:13,873 INFO L137 encePairwiseOnDemand]: 269/277 looper letters, 48 selfloop transitions, 7 changer transitions 0/273 dead transitions. [2022-11-16 11:54:13,874 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 273 transitions, 936 flow [2022-11-16 11:54:13,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 11:54:13,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 11:54:13,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1662 transitions. [2022-11-16 11:54:13,878 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8571428571428571 [2022-11-16 11:54:13,878 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1662 transitions. [2022-11-16 11:54:13,878 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1662 transitions. [2022-11-16 11:54:13,879 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:54:13,880 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1662 transitions. [2022-11-16 11:54:13,885 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 237.42857142857142) internal successors, (1662), 7 states have internal predecessors, (1662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:13,889 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 277.0) internal successors, (2216), 8 states have internal predecessors, (2216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:13,890 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 277.0) internal successors, (2216), 8 states have internal predecessors, (2216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:13,890 INFO L175 Difference]: Start difference. First operand has 301 places, 258 transitions, 782 flow. Second operand 7 states and 1662 transitions. [2022-11-16 11:54:13,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 273 transitions, 936 flow [2022-11-16 11:54:13,895 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 273 transitions, 931 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 11:54:13,899 INFO L231 Difference]: Finished difference. Result has 308 places, 261 transitions, 813 flow [2022-11-16 11:54:13,899 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=277, PETRI_DIFFERENCE_MINUEND_FLOW=773, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=813, PETRI_PLACES=308, PETRI_TRANSITIONS=261} [2022-11-16 11:54:13,900 INFO L288 CegarLoopForPetriNet]: 245 programPoint places, 63 predicate places. [2022-11-16 11:54:13,900 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 261 transitions, 813 flow [2022-11-16 11:54:13,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 233.5) internal successors, (1401), 6 states have internal predecessors, (1401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:13,901 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:54:13,901 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] [2022-11-16 11:54:13,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-16 11:54:13,901 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-16 11:54:13,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:54:13,902 INFO L85 PathProgramCache]: Analyzing trace with hash 1207915074, now seen corresponding path program 1 times [2022-11-16 11:54:13,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:54:13,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530031578] [2022-11-16 11:54:13,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:54:13,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:54:13,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:54:14,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:54:14,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:54:14,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530031578] [2022-11-16 11:54:14,050 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530031578] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:54:14,050 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:54:14,050 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:54:14,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700492751] [2022-11-16 11:54:14,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:54:14,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:54:14,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:54:14,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:54:14,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:54:14,054 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 230 out of 277 [2022-11-16 11:54:14,056 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 261 transitions, 813 flow. Second operand has 6 states, 6 states have (on average 233.66666666666666) internal successors, (1402), 6 states have internal predecessors, (1402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:14,056 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:54:14,056 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 230 of 277 [2022-11-16 11:54:14,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:54:14,614 INFO L130 PetriNetUnfolder]: 198/1086 cut-off events. [2022-11-16 11:54:14,615 INFO L131 PetriNetUnfolder]: For 386/671 co-relation queries the response was YES. [2022-11-16 11:54:14,632 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2128 conditions, 1086 events. 198/1086 cut-off events. For 386/671 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 9073 event pairs, 92 based on Foata normal form. 5/974 useless extension candidates. Maximal degree in co-relation 1948. Up to 222 conditions per place. [2022-11-16 11:54:14,644 INFO L137 encePairwiseOnDemand]: 269/277 looper letters, 54 selfloop transitions, 8 changer transitions 0/282 dead transitions. [2022-11-16 11:54:14,644 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 282 transitions, 1010 flow [2022-11-16 11:54:14,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 11:54:14,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 11:54:14,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1668 transitions. [2022-11-16 11:54:14,648 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8602372356884992 [2022-11-16 11:54:14,648 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1668 transitions. [2022-11-16 11:54:14,648 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1668 transitions. [2022-11-16 11:54:14,649 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:54:14,649 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1668 transitions. [2022-11-16 11:54:14,652 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 238.28571428571428) internal successors, (1668), 7 states have internal predecessors, (1668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:14,655 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 277.0) internal successors, (2216), 8 states have internal predecessors, (2216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:14,656 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 277.0) internal successors, (2216), 8 states have internal predecessors, (2216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:14,656 INFO L175 Difference]: Start difference. First operand has 308 places, 261 transitions, 813 flow. Second operand 7 states and 1668 transitions. [2022-11-16 11:54:14,656 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 282 transitions, 1010 flow [2022-11-16 11:54:14,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 282 transitions, 1008 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:54:14,665 INFO L231 Difference]: Finished difference. Result has 316 places, 265 transitions, 860 flow [2022-11-16 11:54:14,666 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=277, PETRI_DIFFERENCE_MINUEND_FLOW=807, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=860, PETRI_PLACES=316, PETRI_TRANSITIONS=265} [2022-11-16 11:54:14,666 INFO L288 CegarLoopForPetriNet]: 245 programPoint places, 71 predicate places. [2022-11-16 11:54:14,666 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 265 transitions, 860 flow [2022-11-16 11:54:14,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 233.66666666666666) internal successors, (1402), 6 states have internal predecessors, (1402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:14,667 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:54:14,667 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] [2022-11-16 11:54:14,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-16 11:54:14,668 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-16 11:54:14,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:54:14,668 INFO L85 PathProgramCache]: Analyzing trace with hash 627244916, now seen corresponding path program 1 times [2022-11-16 11:54:14,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:54:14,669 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289180090] [2022-11-16 11:54:14,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:54:14,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:54:14,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:54:14,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:54:14,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:54:14,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289180090] [2022-11-16 11:54:14,780 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289180090] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:54:14,780 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:54:14,780 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 11:54:14,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673794291] [2022-11-16 11:54:14,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:54:14,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 11:54:14,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:54:14,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 11:54:14,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:54:14,784 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 232 out of 277 [2022-11-16 11:54:14,786 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 265 transitions, 860 flow. Second operand has 8 states, 8 states have (on average 234.25) internal successors, (1874), 8 states have internal predecessors, (1874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:14,786 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:54:14,786 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 232 of 277 [2022-11-16 11:54:14,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:54:15,587 INFO L130 PetriNetUnfolder]: 477/2445 cut-off events. [2022-11-16 11:54:15,587 INFO L131 PetriNetUnfolder]: For 654/800 co-relation queries the response was YES. [2022-11-16 11:54:15,618 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4094 conditions, 2445 events. 477/2445 cut-off events. For 654/800 co-relation queries the response was YES. Maximal size of possible extension queue 237. Compared 24467 event pairs, 2 based on Foata normal form. 0/2035 useless extension candidates. Maximal degree in co-relation 3626. Up to 486 conditions per place. [2022-11-16 11:54:15,630 INFO L137 encePairwiseOnDemand]: 267/277 looper letters, 38 selfloop transitions, 9 changer transitions 0/279 dead transitions. [2022-11-16 11:54:15,630 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 279 transitions, 990 flow [2022-11-16 11:54:15,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 11:54:15,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-16 11:54:15,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1904 transitions. [2022-11-16 11:54:15,633 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8592057761732852 [2022-11-16 11:54:15,634 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1904 transitions. [2022-11-16 11:54:15,634 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1904 transitions. [2022-11-16 11:54:15,635 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:54:15,635 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1904 transitions. [2022-11-16 11:54:15,638 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 238.0) internal successors, (1904), 8 states have internal predecessors, (1904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:15,642 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 277.0) internal successors, (2493), 9 states have internal predecessors, (2493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:15,642 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 277.0) internal successors, (2493), 9 states have internal predecessors, (2493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:15,643 INFO L175 Difference]: Start difference. First operand has 316 places, 265 transitions, 860 flow. Second operand 8 states and 1904 transitions. [2022-11-16 11:54:15,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 279 transitions, 990 flow [2022-11-16 11:54:15,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 279 transitions, 990 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 11:54:15,652 INFO L231 Difference]: Finished difference. Result has 325 places, 266 transitions, 890 flow [2022-11-16 11:54:15,652 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=277, PETRI_DIFFERENCE_MINUEND_FLOW=860, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=890, PETRI_PLACES=325, PETRI_TRANSITIONS=266} [2022-11-16 11:54:15,653 INFO L288 CegarLoopForPetriNet]: 245 programPoint places, 80 predicate places. [2022-11-16 11:54:15,653 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 266 transitions, 890 flow [2022-11-16 11:54:15,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 234.25) internal successors, (1874), 8 states have internal predecessors, (1874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:15,654 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:54:15,654 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] [2022-11-16 11:54:15,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-16 11:54:15,654 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-16 11:54:15,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:54:15,655 INFO L85 PathProgramCache]: Analyzing trace with hash -2030243245, now seen corresponding path program 1 times [2022-11-16 11:54:15,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:54:15,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307657189] [2022-11-16 11:54:15,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:54:15,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:54:15,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:54:15,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:54:15,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:54:15,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307657189] [2022-11-16 11:54:15,783 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307657189] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:54:15,783 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:54:15,783 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 11:54:15,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563270315] [2022-11-16 11:54:15,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:54:15,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 11:54:15,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:54:15,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 11:54:15,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:54:15,787 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 232 out of 277 [2022-11-16 11:54:15,788 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 266 transitions, 890 flow. Second operand has 8 states, 8 states have (on average 234.375) internal successors, (1875), 8 states have internal predecessors, (1875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:15,789 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:54:15,789 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 232 of 277 [2022-11-16 11:54:15,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:54:16,540 INFO L130 PetriNetUnfolder]: 399/2339 cut-off events. [2022-11-16 11:54:16,540 INFO L131 PetriNetUnfolder]: For 710/833 co-relation queries the response was YES. [2022-11-16 11:54:16,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4028 conditions, 2339 events. 399/2339 cut-off events. For 710/833 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 23219 event pairs, 2 based on Foata normal form. 0/2019 useless extension candidates. Maximal degree in co-relation 3554. Up to 432 conditions per place. [2022-11-16 11:54:16,569 INFO L137 encePairwiseOnDemand]: 267/277 looper letters, 41 selfloop transitions, 9 changer transitions 0/282 dead transitions. [2022-11-16 11:54:16,569 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 282 transitions, 1037 flow [2022-11-16 11:54:16,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 11:54:16,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-16 11:54:16,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1906 transitions. [2022-11-16 11:54:16,573 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8601083032490975 [2022-11-16 11:54:16,574 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1906 transitions. [2022-11-16 11:54:16,574 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1906 transitions. [2022-11-16 11:54:16,575 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:54:16,575 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1906 transitions. [2022-11-16 11:54:16,578 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 238.25) internal successors, (1906), 8 states have internal predecessors, (1906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:16,582 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 277.0) internal successors, (2493), 9 states have internal predecessors, (2493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:16,582 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 277.0) internal successors, (2493), 9 states have internal predecessors, (2493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:16,583 INFO L175 Difference]: Start difference. First operand has 325 places, 266 transitions, 890 flow. Second operand 8 states and 1906 transitions. [2022-11-16 11:54:16,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 282 transitions, 1037 flow [2022-11-16 11:54:16,589 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 282 transitions, 1028 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-16 11:54:16,593 INFO L231 Difference]: Finished difference. Result has 330 places, 267 transitions, 911 flow [2022-11-16 11:54:16,593 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=277, PETRI_DIFFERENCE_MINUEND_FLOW=881, PETRI_DIFFERENCE_MINUEND_PLACES=321, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=911, PETRI_PLACES=330, PETRI_TRANSITIONS=267} [2022-11-16 11:54:16,594 INFO L288 CegarLoopForPetriNet]: 245 programPoint places, 85 predicate places. [2022-11-16 11:54:16,594 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 267 transitions, 911 flow [2022-11-16 11:54:16,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 234.375) internal successors, (1875), 8 states have internal predecessors, (1875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:16,595 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:54:16,595 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] [2022-11-16 11:54:16,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-11-16 11:54:16,595 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-16 11:54:16,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:54:16,596 INFO L85 PathProgramCache]: Analyzing trace with hash -1375631753, now seen corresponding path program 1 times [2022-11-16 11:54:16,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:54:16,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143190446] [2022-11-16 11:54:16,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:54:16,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:54:16,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:54:16,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:54:16,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:54:16,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143190446] [2022-11-16 11:54:16,718 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143190446] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:54:16,719 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:54:16,719 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:54:16,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192881009] [2022-11-16 11:54:16,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:54:16,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:54:16,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:54:16,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:54:16,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:54:16,722 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 230 out of 277 [2022-11-16 11:54:16,724 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 267 transitions, 911 flow. Second operand has 6 states, 6 states have (on average 233.66666666666666) internal successors, (1402), 6 states have internal predecessors, (1402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:16,724 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:54:16,724 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 230 of 277 [2022-11-16 11:54:16,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:54:17,377 INFO L130 PetriNetUnfolder]: 653/2286 cut-off events. [2022-11-16 11:54:17,377 INFO L131 PetriNetUnfolder]: For 1028/1321 co-relation queries the response was YES. [2022-11-16 11:54:17,398 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4397 conditions, 2286 events. 653/2286 cut-off events. For 1028/1321 co-relation queries the response was YES. Maximal size of possible extension queue 345. Compared 25723 event pairs, 348 based on Foata normal form. 18/1810 useless extension candidates. Maximal degree in co-relation 4291. Up to 741 conditions per place. [2022-11-16 11:54:17,405 INFO L137 encePairwiseOnDemand]: 269/277 looper letters, 40 selfloop transitions, 7 changer transitions 4/281 dead transitions. [2022-11-16 11:54:17,405 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 281 transitions, 1049 flow [2022-11-16 11:54:17,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 11:54:17,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 11:54:17,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1661 transitions. [2022-11-16 11:54:17,408 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8566271273852502 [2022-11-16 11:54:17,408 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1661 transitions. [2022-11-16 11:54:17,409 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1661 transitions. [2022-11-16 11:54:17,409 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:54:17,410 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1661 transitions. [2022-11-16 11:54:17,412 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 237.28571428571428) internal successors, (1661), 7 states have internal predecessors, (1661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:17,415 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 277.0) internal successors, (2216), 8 states have internal predecessors, (2216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:17,416 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 277.0) internal successors, (2216), 8 states have internal predecessors, (2216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:17,416 INFO L175 Difference]: Start difference. First operand has 330 places, 267 transitions, 911 flow. Second operand 7 states and 1661 transitions. [2022-11-16 11:54:17,416 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 281 transitions, 1049 flow [2022-11-16 11:54:17,423 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 281 transitions, 1038 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-16 11:54:17,427 INFO L231 Difference]: Finished difference. Result has 334 places, 270 transitions, 936 flow [2022-11-16 11:54:17,427 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=277, PETRI_DIFFERENCE_MINUEND_FLOW=896, PETRI_DIFFERENCE_MINUEND_PLACES=324, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=936, PETRI_PLACES=334, PETRI_TRANSITIONS=270} [2022-11-16 11:54:17,428 INFO L288 CegarLoopForPetriNet]: 245 programPoint places, 89 predicate places. [2022-11-16 11:54:17,428 INFO L495 AbstractCegarLoop]: Abstraction has has 334 places, 270 transitions, 936 flow [2022-11-16 11:54:17,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 233.66666666666666) internal successors, (1402), 6 states have internal predecessors, (1402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:17,429 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:54:17,429 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] [2022-11-16 11:54:17,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-11-16 11:54:17,429 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-16 11:54:17,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:54:17,430 INFO L85 PathProgramCache]: Analyzing trace with hash 1032119673, now seen corresponding path program 1 times [2022-11-16 11:54:17,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:54:17,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997182698] [2022-11-16 11:54:17,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:54:17,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:54:17,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:54:17,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:54:17,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:54:17,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997182698] [2022-11-16 11:54:17,555 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997182698] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:54:17,555 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:54:17,555 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:54:17,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686890372] [2022-11-16 11:54:17,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:54:17,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:54:17,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:54:17,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:54:17,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:54:17,558 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 230 out of 277 [2022-11-16 11:54:17,559 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 270 transitions, 936 flow. Second operand has 6 states, 6 states have (on average 233.83333333333334) internal successors, (1403), 6 states have internal predecessors, (1403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:17,559 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:54:17,559 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 230 of 277 [2022-11-16 11:54:17,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:54:18,226 INFO L130 PetriNetUnfolder]: 605/2225 cut-off events. [2022-11-16 11:54:18,226 INFO L131 PetriNetUnfolder]: For 1080/1357 co-relation queries the response was YES. [2022-11-16 11:54:18,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4598 conditions, 2225 events. 605/2225 cut-off events. For 1080/1357 co-relation queries the response was YES. Maximal size of possible extension queue 313. Compared 24567 event pairs, 288 based on Foata normal form. 13/1846 useless extension candidates. Maximal degree in co-relation 4493. Up to 616 conditions per place. [2022-11-16 11:54:18,246 INFO L137 encePairwiseOnDemand]: 269/277 looper letters, 0 selfloop transitions, 0 changer transitions 291/291 dead transitions. [2022-11-16 11:54:18,246 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 291 transitions, 1130 flow [2022-11-16 11:54:18,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 11:54:18,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 11:54:18,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1667 transitions. [2022-11-16 11:54:18,249 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8597215059308922 [2022-11-16 11:54:18,249 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1667 transitions. [2022-11-16 11:54:18,249 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1667 transitions. [2022-11-16 11:54:18,250 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:54:18,250 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1667 transitions. [2022-11-16 11:54:18,253 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 238.14285714285714) internal successors, (1667), 7 states have internal predecessors, (1667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:18,256 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 277.0) internal successors, (2216), 8 states have internal predecessors, (2216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:18,257 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 277.0) internal successors, (2216), 8 states have internal predecessors, (2216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:18,257 INFO L175 Difference]: Start difference. First operand has 334 places, 270 transitions, 936 flow. Second operand 7 states and 1667 transitions. [2022-11-16 11:54:18,257 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 291 transitions, 1130 flow [2022-11-16 11:54:18,267 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 291 transitions, 1128 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:54:18,270 INFO L231 Difference]: Finished difference. Result has 338 places, 0 transitions, 0 flow [2022-11-16 11:54:18,270 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=277, PETRI_DIFFERENCE_MINUEND_FLOW=930, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=338, PETRI_TRANSITIONS=0} [2022-11-16 11:54:18,271 INFO L288 CegarLoopForPetriNet]: 245 programPoint places, 93 predicate places. [2022-11-16 11:54:18,271 INFO L495 AbstractCegarLoop]: Abstraction has has 338 places, 0 transitions, 0 flow [2022-11-16 11:54:18,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 233.83333333333334) internal successors, (1403), 6 states have internal predecessors, (1403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:18,274 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (38 of 39 remaining) [2022-11-16 11:54:18,275 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (37 of 39 remaining) [2022-11-16 11:54:18,275 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (36 of 39 remaining) [2022-11-16 11:54:18,275 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (35 of 39 remaining) [2022-11-16 11:54:18,275 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (34 of 39 remaining) [2022-11-16 11:54:18,275 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (33 of 39 remaining) [2022-11-16 11:54:18,275 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (32 of 39 remaining) [2022-11-16 11:54:18,276 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (31 of 39 remaining) [2022-11-16 11:54:18,276 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (30 of 39 remaining) [2022-11-16 11:54:18,276 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 39 remaining) [2022-11-16 11:54:18,276 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 39 remaining) [2022-11-16 11:54:18,276 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 39 remaining) [2022-11-16 11:54:18,277 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 39 remaining) [2022-11-16 11:54:18,277 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 39 remaining) [2022-11-16 11:54:18,277 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 39 remaining) [2022-11-16 11:54:18,277 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 39 remaining) [2022-11-16 11:54:18,277 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 39 remaining) [2022-11-16 11:54:18,277 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 39 remaining) [2022-11-16 11:54:18,278 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 39 remaining) [2022-11-16 11:54:18,278 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (19 of 39 remaining) [2022-11-16 11:54:18,278 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (18 of 39 remaining) [2022-11-16 11:54:18,278 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 39 remaining) [2022-11-16 11:54:18,278 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 39 remaining) [2022-11-16 11:54:18,278 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 39 remaining) [2022-11-16 11:54:18,279 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 39 remaining) [2022-11-16 11:54:18,279 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 39 remaining) [2022-11-16 11:54:18,279 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 39 remaining) [2022-11-16 11:54:18,279 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 39 remaining) [2022-11-16 11:54:18,279 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 39 remaining) [2022-11-16 11:54:18,280 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 39 remaining) [2022-11-16 11:54:18,280 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 39 remaining) [2022-11-16 11:54:18,280 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 39 remaining) [2022-11-16 11:54:18,280 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 39 remaining) [2022-11-16 11:54:18,280 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 39 remaining) [2022-11-16 11:54:18,280 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 39 remaining) [2022-11-16 11:54:18,281 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 39 remaining) [2022-11-16 11:54:18,281 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 39 remaining) [2022-11-16 11:54:18,281 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 39 remaining) [2022-11-16 11:54:18,281 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 39 remaining) [2022-11-16 11:54:18,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-11-16 11:54:18,282 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] [2022-11-16 11:54:18,288 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-16 11:54:18,288 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-16 11:54:18,293 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 11:54:18 BasicIcfg [2022-11-16 11:54:18,293 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-16 11:54:18,294 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-16 11:54:18,294 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-16 11:54:18,294 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-16 11:54:18,294 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:53:59" (3/4) ... [2022-11-16 11:54:18,297 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-16 11:54:18,303 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-11-16 11:54:18,303 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-11-16 11:54:18,303 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2022-11-16 11:54:18,308 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2022-11-16 11:54:18,309 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-16 11:54:18,309 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-16 11:54:18,309 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-16 11:54:18,350 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a587549-c624-4b7d-a90d-acf445a893ca/bin/uautomizer-tPACEb0tL8/witness.graphml [2022-11-16 11:54:18,351 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-16 11:54:18,351 INFO L158 Benchmark]: Toolchain (without parser) took 20308.96ms. Allocated memory was 109.1MB in the beginning and 671.1MB in the end (delta: 562.0MB). Free memory was 64.9MB in the beginning and 345.1MB in the end (delta: -280.2MB). Peak memory consumption was 282.3MB. Max. memory is 16.1GB. [2022-11-16 11:54:18,352 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 109.1MB. Free memory is still 81.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 11:54:18,352 INFO L158 Benchmark]: CACSL2BoogieTranslator took 303.46ms. Allocated memory is still 109.1MB. Free memory was 64.7MB in the beginning and 81.9MB in the end (delta: -17.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-11-16 11:54:18,352 INFO L158 Benchmark]: Boogie Procedure Inliner took 44.12ms. Allocated memory is still 109.1MB. Free memory was 81.9MB in the beginning and 79.6MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 11:54:18,353 INFO L158 Benchmark]: Boogie Preprocessor took 28.16ms. Allocated memory is still 109.1MB. Free memory was 79.6MB in the beginning and 78.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 11:54:18,353 INFO L158 Benchmark]: RCFGBuilder took 705.82ms. Allocated memory is still 109.1MB. Free memory was 77.9MB in the beginning and 56.6MB in the end (delta: 21.3MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2022-11-16 11:54:18,353 INFO L158 Benchmark]: TraceAbstraction took 19161.91ms. Allocated memory was 109.1MB in the beginning and 671.1MB in the end (delta: 562.0MB). Free memory was 55.9MB in the beginning and 348.3MB in the end (delta: -292.3MB). Peak memory consumption was 271.8MB. Max. memory is 16.1GB. [2022-11-16 11:54:18,354 INFO L158 Benchmark]: Witness Printer took 57.34ms. Allocated memory is still 671.1MB. Free memory was 348.3MB in the beginning and 345.1MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-16 11:54:18,359 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 109.1MB. Free memory is still 81.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 303.46ms. Allocated memory is still 109.1MB. Free memory was 64.7MB in the beginning and 81.9MB in the end (delta: -17.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 44.12ms. Allocated memory is still 109.1MB. Free memory was 81.9MB in the beginning and 79.6MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 28.16ms. Allocated memory is still 109.1MB. Free memory was 79.6MB in the beginning and 78.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 705.82ms. Allocated memory is still 109.1MB. Free memory was 77.9MB in the beginning and 56.6MB in the end (delta: 21.3MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 19161.91ms. Allocated memory was 109.1MB in the beginning and 671.1MB in the end (delta: 562.0MB). Free memory was 55.9MB in the beginning and 348.3MB in the end (delta: -292.3MB). Peak memory consumption was 271.8MB. Max. memory is 16.1GB. * Witness Printer took 57.34ms. Allocated memory is still 671.1MB. Free memory was 348.3MB in the beginning and 345.1MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 86]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 86]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 87]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 87]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 88]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 88]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 86]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 86]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 87]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 87]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 88]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 88]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 86]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 86]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 87]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 87]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 88]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 88]: 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, 433 locations, 39 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: 18.9s, OverallIterations: 27, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 14.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1526 SdHoareTripleChecker+Valid, 2.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1526 mSDsluCounter, 740 SdHoareTripleChecker+Invalid, 1.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 363 mSDsCounter, 78 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2399 IncrementalHoareTripleChecker+Invalid, 2477 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 78 mSolverCounterUnsat, 377 mSDtfsCounter, 2399 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 195 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 166 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=936occurred in iteration=26, InterpolantAutomatonStates: 166, 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, 0.2s SatisfiabilityAnalysisTime, 2.9s InterpolantComputationTime, 2013 NumberOfCodeBlocks, 2013 NumberOfCodeBlocksAsserted, 27 NumberOfCheckSat, 1986 ConstructedInterpolants, 0 QuantifiedInterpolants, 4157 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 27 InterpolantComputations, 27 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 18 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-16 11:54:18,394 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a587549-c624-4b7d-a90d-acf445a893ca/bin/uautomizer-tPACEb0tL8/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