./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/fibonacci.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa3ea01d-9da5-469e-b10e-126f01a01e42/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa3ea01d-9da5-469e-b10e-126f01a01e42/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_fa3ea01d-9da5-469e-b10e-126f01a01e42/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa3ea01d-9da5-469e-b10e-126f01a01e42/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/fibonacci.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa3ea01d-9da5-469e-b10e-126f01a01e42/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_fa3ea01d-9da5-469e-b10e-126f01a01e42/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 7f56768e1b40ef6b1b210f9cfb796e99d1f27ee48ed204adfea165b19bcc995e --- 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 11:49:57,213 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 11:49:57,215 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 11:49:57,241 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 11:49:57,241 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 11:49:57,249 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 11:49:57,253 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 11:49:57,258 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 11:49:57,260 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 11:49:57,267 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 11:49:57,269 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 11:49:57,271 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 11:49:57,272 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 11:49:57,274 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 11:49:57,276 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 11:49:57,279 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 11:49:57,282 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 11:49:57,283 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 11:49:57,284 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 11:49:57,286 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 11:49:57,293 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 11:49:57,295 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 11:49:57,296 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 11:49:57,298 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 11:49:57,302 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 11:49:57,307 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 11:49:57,307 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 11:49:57,308 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 11:49:57,309 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 11:49:57,310 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 11:49:57,311 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 11:49:57,312 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 11:49:57,314 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 11:49:57,316 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 11:49:57,317 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 11:49:57,317 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 11:49:57,318 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 11:49:57,318 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 11:49:57,318 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 11:49:57,319 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 11:49:57,320 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 11:49:57,321 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa3ea01d-9da5-469e-b10e-126f01a01e42/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-16 11:49:57,358 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 11:49:57,361 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 11:49:57,362 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 11:49:57,362 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 11:49:57,363 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 11:49:57,363 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 11:49:57,364 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 11:49:57,364 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 11:49:57,365 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 11:49:57,365 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 11:49:57,366 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 11:49:57,366 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 11:49:57,366 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 11:49:57,367 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 11:49:57,367 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 11:49:57,367 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 11:49:57,367 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 11:49:57,367 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 11:49:57,368 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-16 11:49:57,368 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 11:49:57,368 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 11:49:57,368 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 11:49:57,368 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 11:49:57,369 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 11:49:57,369 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 11:49:57,369 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 11:49:57,369 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:49:57,370 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 11:49:57,370 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 11:49:57,370 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 11:49:57,370 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 11:49:57,370 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 11:49:57,371 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 11:49:57,371 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 11:49:57,371 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 11:49:57,371 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_fa3ea01d-9da5-469e-b10e-126f01a01e42/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa3ea01d-9da5-469e-b10e-126f01a01e42/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7f56768e1b40ef6b1b210f9cfb796e99d1f27ee48ed204adfea165b19bcc995e [2022-11-16 11:49:57,629 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 11:49:57,660 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 11:49:57,663 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 11:49:57,664 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 11:49:57,665 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 11:49:57,666 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa3ea01d-9da5-469e-b10e-126f01a01e42/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/weaver/fibonacci.wvr.c [2022-11-16 11:49:57,738 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa3ea01d-9da5-469e-b10e-126f01a01e42/bin/uautomizer-tPACEb0tL8/data/52e232f52/5c13e0581eb143fb9180302386a4012e/FLAG268c95a6d [2022-11-16 11:49:58,164 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 11:49:58,165 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa3ea01d-9da5-469e-b10e-126f01a01e42/sv-benchmarks/c/weaver/fibonacci.wvr.c [2022-11-16 11:49:58,180 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa3ea01d-9da5-469e-b10e-126f01a01e42/bin/uautomizer-tPACEb0tL8/data/52e232f52/5c13e0581eb143fb9180302386a4012e/FLAG268c95a6d [2022-11-16 11:49:58,566 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa3ea01d-9da5-469e-b10e-126f01a01e42/bin/uautomizer-tPACEb0tL8/data/52e232f52/5c13e0581eb143fb9180302386a4012e [2022-11-16 11:49:58,571 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 11:49:58,574 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 11:49:58,578 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 11:49:58,578 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 11:49:58,582 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 11:49:58,583 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:49:58" (1/1) ... [2022-11-16 11:49:58,584 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70ef5c89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:49:58, skipping insertion in model container [2022-11-16 11:49:58,584 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:49:58" (1/1) ... [2022-11-16 11:49:58,592 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 11:49:58,611 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:49:58,820 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_fa3ea01d-9da5-469e-b10e-126f01a01e42/sv-benchmarks/c/weaver/fibonacci.wvr.c[2330,2343] [2022-11-16 11:49:58,826 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:49:58,834 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 11:49:58,853 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_fa3ea01d-9da5-469e-b10e-126f01a01e42/sv-benchmarks/c/weaver/fibonacci.wvr.c[2330,2343] [2022-11-16 11:49:58,858 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:49:58,871 INFO L208 MainTranslator]: Completed translation [2022-11-16 11:49:58,872 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:49:58 WrapperNode [2022-11-16 11:49:58,872 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 11:49:58,873 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 11:49:58,873 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 11:49:58,873 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 11:49:58,881 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:49:58" (1/1) ... [2022-11-16 11:49:58,888 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:49:58" (1/1) ... [2022-11-16 11:49:58,914 INFO L138 Inliner]: procedures = 23, calls = 28, calls flagged for inlining = 12, calls inlined = 16, statements flattened = 222 [2022-11-16 11:49:58,914 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 11:49:58,915 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 11:49:58,915 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 11:49:58,915 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 11:49:58,924 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:49:58" (1/1) ... [2022-11-16 11:49:58,924 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:49:58" (1/1) ... [2022-11-16 11:49:58,928 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:49:58" (1/1) ... [2022-11-16 11:49:58,928 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:49:58" (1/1) ... [2022-11-16 11:49:58,934 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:49:58" (1/1) ... [2022-11-16 11:49:58,938 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:49:58" (1/1) ... [2022-11-16 11:49:58,940 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:49:58" (1/1) ... [2022-11-16 11:49:58,941 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:49:58" (1/1) ... [2022-11-16 11:49:58,944 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 11:49:58,945 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 11:49:58,945 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 11:49:58,946 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 11:49:58,946 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:49:58" (1/1) ... [2022-11-16 11:49:58,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:49:58,974 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa3ea01d-9da5-469e-b10e-126f01a01e42/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:49:58,984 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa3ea01d-9da5-469e-b10e-126f01a01e42/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 11:49:58,989 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa3ea01d-9da5-469e-b10e-126f01a01e42/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 11:49:59,020 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 11:49:59,020 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-16 11:49:59,020 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-16 11:49:59,020 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-16 11:49:59,020 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-16 11:49:59,021 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 11:49:59,021 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 11:49:59,021 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 11:49:59,021 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 11:49:59,021 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 11:49:59,021 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 11:49:59,021 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 11:49:59,023 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 11:49:59,131 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 11:49:59,133 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 11:49:59,724 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 11:49:59,736 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 11:49:59,737 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-16 11:49:59,739 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:49:59 BoogieIcfgContainer [2022-11-16 11:49:59,739 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 11:49:59,742 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 11:49:59,742 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 11:49:59,758 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 11:49:59,759 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:49:58" (1/3) ... [2022-11-16 11:49:59,760 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d10a9d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:49:59, skipping insertion in model container [2022-11-16 11:49:59,760 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:49:58" (2/3) ... [2022-11-16 11:49:59,760 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d10a9d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:49:59, skipping insertion in model container [2022-11-16 11:49:59,760 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:49:59" (3/3) ... [2022-11-16 11:49:59,762 INFO L112 eAbstractionObserver]: Analyzing ICFG fibonacci.wvr.c [2022-11-16 11:49:59,771 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 11:49:59,782 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 11:49:59,783 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 28 error locations. [2022-11-16 11:49:59,783 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 11:49:59,968 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-16 11:50:00,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 300 places, 315 transitions, 646 flow [2022-11-16 11:50:00,197 INFO L130 PetriNetUnfolder]: 22/313 cut-off events. [2022-11-16 11:50:00,197 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-16 11:50:00,208 INFO L83 FinitePrefix]: Finished finitePrefix Result has 322 conditions, 313 events. 22/313 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 597 event pairs, 0 based on Foata normal form. 0/263 useless extension candidates. Maximal degree in co-relation 239. Up to 2 conditions per place. [2022-11-16 11:50:00,209 INFO L82 GeneralOperation]: Start removeDead. Operand has 300 places, 315 transitions, 646 flow [2022-11-16 11:50:00,223 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 280 places, 294 transitions, 597 flow [2022-11-16 11:50:00,246 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:50:00,256 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;@2ce04460, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:50:00,256 INFO L358 AbstractCegarLoop]: Starting to check reachability of 58 error locations. [2022-11-16 11:50:00,302 INFO L130 PetriNetUnfolder]: 3/88 cut-off events. [2022-11-16 11:50:00,302 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-16 11:50:00,303 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:50:00,303 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 11:50:00,304 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-11-16 11:50:00,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:50:00,312 INFO L85 PathProgramCache]: Analyzing trace with hash 1624898739, now seen corresponding path program 1 times [2022-11-16 11:50:00,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:50:00,322 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451493969] [2022-11-16 11:50:00,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:50:00,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:50:00,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:50:00,959 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 11:50:00,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:50:00,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451493969] [2022-11-16 11:50:00,961 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451493969] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:50:00,961 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:50:00,962 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:50:00,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998834665] [2022-11-16 11:50:00,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:50:00,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:50:00,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:50:01,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:50:01,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:50:01,035 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 270 out of 315 [2022-11-16 11:50:01,055 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 294 transitions, 597 flow. Second operand has 6 states, 6 states have (on average 272.0) internal successors, (1632), 6 states have internal predecessors, (1632), 0 states have call successors, (0), 0 states 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 11:50:01,055 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:50:01,055 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 270 of 315 [2022-11-16 11:50:01,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:50:01,706 INFO L130 PetriNetUnfolder]: 80/945 cut-off events. [2022-11-16 11:50:01,706 INFO L131 PetriNetUnfolder]: For 62/62 co-relation queries the response was YES. [2022-11-16 11:50:01,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1219 conditions, 945 events. 80/945 cut-off events. For 62/62 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 3915 event pairs, 1 based on Foata normal form. 240/1015 useless extension candidates. Maximal degree in co-relation 1133. Up to 54 conditions per place. [2022-11-16 11:50:01,726 INFO L137 encePairwiseOnDemand]: 294/315 looper letters, 60 selfloop transitions, 10 changer transitions 1/322 dead transitions. [2022-11-16 11:50:01,726 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 322 transitions, 817 flow [2022-11-16 11:50:01,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 11:50:01,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-16 11:50:01,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2277 transitions. [2022-11-16 11:50:01,754 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9035714285714286 [2022-11-16 11:50:01,755 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2277 transitions. [2022-11-16 11:50:01,756 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2277 transitions. [2022-11-16 11:50:01,762 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:50:01,765 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2277 transitions. [2022-11-16 11:50:01,777 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 284.625) internal successors, (2277), 8 states have internal predecessors, (2277), 0 states have call successors, (0), 0 states 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 11:50:01,791 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 315.0) internal successors, (2835), 9 states have internal predecessors, (2835), 0 states have call successors, (0), 0 states 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 11:50:01,793 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 315.0) internal successors, (2835), 9 states have internal predecessors, (2835), 0 states have call successors, (0), 0 states 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 11:50:01,795 INFO L175 Difference]: Start difference. First operand has 280 places, 294 transitions, 597 flow. Second operand 8 states and 2277 transitions. [2022-11-16 11:50:01,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 322 transitions, 817 flow [2022-11-16 11:50:01,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 322 transitions, 801 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 11:50:01,813 INFO L231 Difference]: Finished difference. Result has 290 places, 289 transitions, 636 flow [2022-11-16 11:50:01,815 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=570, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=636, PETRI_PLACES=290, PETRI_TRANSITIONS=289} [2022-11-16 11:50:01,821 INFO L288 CegarLoopForPetriNet]: 280 programPoint places, 10 predicate places. [2022-11-16 11:50:01,822 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 289 transitions, 636 flow [2022-11-16 11:50:01,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 272.0) internal successors, (1632), 6 states have internal predecessors, (1632), 0 states have call successors, (0), 0 states 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 11:50:01,823 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:50:01,823 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 11:50:01,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 11:50:01,824 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-11-16 11:50:01,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:50:01,826 INFO L85 PathProgramCache]: Analyzing trace with hash -1167745870, now seen corresponding path program 1 times [2022-11-16 11:50:01,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:50:01,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195624279] [2022-11-16 11:50:01,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:50:01,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:50:01,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:50:02,019 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 11:50:02,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:50:02,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195624279] [2022-11-16 11:50:02,020 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195624279] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:50:02,020 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:50:02,021 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:50:02,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741942724] [2022-11-16 11:50:02,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:50:02,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:50:02,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:50:02,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:50:02,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:50:02,025 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 315 [2022-11-16 11:50:02,027 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 289 transitions, 636 flow. Second operand has 4 states, 4 states have (on average 276.75) internal successors, (1107), 4 states have internal predecessors, (1107), 0 states have call successors, (0), 0 states 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 11:50:02,027 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:50:02,028 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 315 [2022-11-16 11:50:02,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:50:02,461 INFO L130 PetriNetUnfolder]: 102/1224 cut-off events. [2022-11-16 11:50:02,461 INFO L131 PetriNetUnfolder]: For 67/67 co-relation queries the response was YES. [2022-11-16 11:50:02,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1639 conditions, 1224 events. 102/1224 cut-off events. For 67/67 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 5936 event pairs, 30 based on Foata normal form. 8/1024 useless extension candidates. Maximal degree in co-relation 1524. Up to 105 conditions per place. [2022-11-16 11:50:02,490 INFO L137 encePairwiseOnDemand]: 308/315 looper letters, 36 selfloop transitions, 6 changer transitions 0/301 dead transitions. [2022-11-16 11:50:02,491 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 301 transitions, 749 flow [2022-11-16 11:50:02,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:50:02,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 11:50:02,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1140 transitions. [2022-11-16 11:50:02,495 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9047619047619048 [2022-11-16 11:50:02,495 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1140 transitions. [2022-11-16 11:50:02,495 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1140 transitions. [2022-11-16 11:50:02,497 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:50:02,497 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1140 transitions. [2022-11-16 11:50:02,500 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 285.0) internal successors, (1140), 4 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states 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 11:50:02,503 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 315.0) internal successors, (1575), 5 states have internal predecessors, (1575), 0 states have call successors, (0), 0 states 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 11:50:02,505 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 315.0) internal successors, (1575), 5 states have internal predecessors, (1575), 0 states have call successors, (0), 0 states 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 11:50:02,506 INFO L175 Difference]: Start difference. First operand has 290 places, 289 transitions, 636 flow. Second operand 4 states and 1140 transitions. [2022-11-16 11:50:02,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 301 transitions, 749 flow [2022-11-16 11:50:02,511 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 301 transitions, 747 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:50:02,553 INFO L231 Difference]: Finished difference. Result has 293 places, 291 transitions, 674 flow [2022-11-16 11:50:02,554 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=624, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=674, PETRI_PLACES=293, PETRI_TRANSITIONS=291} [2022-11-16 11:50:02,555 INFO L288 CegarLoopForPetriNet]: 280 programPoint places, 13 predicate places. [2022-11-16 11:50:02,555 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 291 transitions, 674 flow [2022-11-16 11:50:02,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 276.75) internal successors, (1107), 4 states have internal predecessors, (1107), 0 states have call successors, (0), 0 states 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 11:50:02,556 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:50:02,556 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 11:50:02,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 11:50:02,556 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-11-16 11:50:02,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:50:02,557 INFO L85 PathProgramCache]: Analyzing trace with hash 1355556881, now seen corresponding path program 1 times [2022-11-16 11:50:02,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:50:02,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683615215] [2022-11-16 11:50:02,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:50:02,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:50:02,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:50:02,776 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 11:50:02,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:50:02,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683615215] [2022-11-16 11:50:02,777 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683615215] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:50:02,777 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:50:02,777 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:50:02,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883179514] [2022-11-16 11:50:02,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:50:02,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:50:02,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:50:02,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:50:02,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:50:02,781 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 270 out of 315 [2022-11-16 11:50:02,784 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 291 transitions, 674 flow. Second operand has 6 states, 6 states have (on average 272.1666666666667) internal successors, (1633), 6 states have internal predecessors, (1633), 0 states have call successors, (0), 0 states 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 11:50:02,784 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:50:02,784 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 270 of 315 [2022-11-16 11:50:02,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:50:04,002 INFO L130 PetriNetUnfolder]: 382/2951 cut-off events. [2022-11-16 11:50:04,002 INFO L131 PetriNetUnfolder]: For 328/333 co-relation queries the response was YES. [2022-11-16 11:50:04,039 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3704 conditions, 2951 events. 382/2951 cut-off events. For 328/333 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 27695 event pairs, 0 based on Foata normal form. 0/2213 useless extension candidates. Maximal degree in co-relation 3620. Up to 294 conditions per place. [2022-11-16 11:50:04,140 INFO L137 encePairwiseOnDemand]: 305/315 looper letters, 57 selfloop transitions, 10 changer transitions 0/327 dead transitions. [2022-11-16 11:50:04,141 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 327 transitions, 885 flow [2022-11-16 11:50:04,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 11:50:04,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-16 11:50:04,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2228 transitions. [2022-11-16 11:50:04,146 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8841269841269841 [2022-11-16 11:50:04,146 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2228 transitions. [2022-11-16 11:50:04,147 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2228 transitions. [2022-11-16 11:50:04,148 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:50:04,148 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2228 transitions. [2022-11-16 11:50:04,154 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 278.5) internal successors, (2228), 8 states have internal predecessors, (2228), 0 states have call successors, (0), 0 states 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 11:50:04,159 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 315.0) internal successors, (2835), 9 states have internal predecessors, (2835), 0 states have call successors, (0), 0 states 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 11:50:04,162 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 315.0) internal successors, (2835), 9 states have internal predecessors, (2835), 0 states have call successors, (0), 0 states 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 11:50:04,162 INFO L175 Difference]: Start difference. First operand has 293 places, 291 transitions, 674 flow. Second operand 8 states and 2228 transitions. [2022-11-16 11:50:04,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 327 transitions, 885 flow [2022-11-16 11:50:04,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 327 transitions, 885 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 11:50:04,172 INFO L231 Difference]: Finished difference. Result has 306 places, 298 transitions, 742 flow [2022-11-16 11:50:04,173 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=674, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=282, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=742, PETRI_PLACES=306, PETRI_TRANSITIONS=298} [2022-11-16 11:50:04,175 INFO L288 CegarLoopForPetriNet]: 280 programPoint places, 26 predicate places. [2022-11-16 11:50:04,176 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 298 transitions, 742 flow [2022-11-16 11:50:04,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 272.1666666666667) internal successors, (1633), 6 states have internal predecessors, (1633), 0 states have call successors, (0), 0 states 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 11:50:04,177 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:50:04,178 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 11:50:04,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 11:50:04,178 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-11-16 11:50:04,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:50:04,179 INFO L85 PathProgramCache]: Analyzing trace with hash -927408762, now seen corresponding path program 1 times [2022-11-16 11:50:04,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:50:04,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902467115] [2022-11-16 11:50:04,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:50:04,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:50:04,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:50:04,367 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 11:50:04,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:50:04,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902467115] [2022-11-16 11:50:04,371 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902467115] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:50:04,371 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:50:04,371 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:50:04,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504285394] [2022-11-16 11:50:04,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:50:04,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:50:04,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:50:04,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:50:04,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:50:04,377 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 315 [2022-11-16 11:50:04,379 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 298 transitions, 742 flow. Second operand has 4 states, 4 states have (on average 277.0) internal successors, (1108), 4 states have internal predecessors, (1108), 0 states have call successors, (0), 0 states 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 11:50:04,379 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:50:04,380 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 315 [2022-11-16 11:50:04,380 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:50:06,106 INFO L130 PetriNetUnfolder]: 514/4334 cut-off events. [2022-11-16 11:50:06,106 INFO L131 PetriNetUnfolder]: For 624/629 co-relation queries the response was YES. [2022-11-16 11:50:06,168 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5513 conditions, 4334 events. 514/4334 cut-off events. For 624/629 co-relation queries the response was YES. Maximal size of possible extension queue 276. Compared 41832 event pairs, 180 based on Foata normal form. 28/3321 useless extension candidates. Maximal degree in co-relation 5424. Up to 427 conditions per place. [2022-11-16 11:50:06,199 INFO L137 encePairwiseOnDemand]: 308/315 looper letters, 35 selfloop transitions, 6 changer transitions 0/309 dead transitions. [2022-11-16 11:50:06,199 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 309 transitions, 848 flow [2022-11-16 11:50:06,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:50:06,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 11:50:06,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1139 transitions. [2022-11-16 11:50:06,203 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.903968253968254 [2022-11-16 11:50:06,203 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1139 transitions. [2022-11-16 11:50:06,203 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1139 transitions. [2022-11-16 11:50:06,204 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:50:06,204 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1139 transitions. [2022-11-16 11:50:06,207 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 284.75) internal successors, (1139), 4 states have internal predecessors, (1139), 0 states have call successors, (0), 0 states 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 11:50:06,210 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 315.0) internal successors, (1575), 5 states have internal predecessors, (1575), 0 states have call successors, (0), 0 states 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 11:50:06,211 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 315.0) internal successors, (1575), 5 states have internal predecessors, (1575), 0 states have call successors, (0), 0 states 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 11:50:06,211 INFO L175 Difference]: Start difference. First operand has 306 places, 298 transitions, 742 flow. Second operand 4 states and 1139 transitions. [2022-11-16 11:50:06,211 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 309 transitions, 848 flow [2022-11-16 11:50:06,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 309 transitions, 846 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:50:06,221 INFO L231 Difference]: Finished difference. Result has 310 places, 300 transitions, 780 flow [2022-11-16 11:50:06,222 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=730, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=290, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=780, PETRI_PLACES=310, PETRI_TRANSITIONS=300} [2022-11-16 11:50:06,224 INFO L288 CegarLoopForPetriNet]: 280 programPoint places, 30 predicate places. [2022-11-16 11:50:06,224 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 300 transitions, 780 flow [2022-11-16 11:50:06,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 277.0) internal successors, (1108), 4 states have internal predecessors, (1108), 0 states have call successors, (0), 0 states 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 11:50:06,231 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:50:06,231 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 11:50:06,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 11:50:06,232 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-11-16 11:50:06,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:50:06,233 INFO L85 PathProgramCache]: Analyzing trace with hash 1934126745, now seen corresponding path program 1 times [2022-11-16 11:50:06,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:50:06,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497962021] [2022-11-16 11:50:06,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:50:06,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:50:06,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:50:06,308 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 11:50:06,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:50:06,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497962021] [2022-11-16 11:50:06,309 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497962021] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:50:06,309 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:50:06,309 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:50:06,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082078009] [2022-11-16 11:50:06,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:50:06,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:50:06,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:50:06,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:50:06,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:50:06,312 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 315 [2022-11-16 11:50:06,313 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 300 transitions, 780 flow. Second operand has 4 states, 4 states have (on average 277.25) internal successors, (1109), 4 states have internal predecessors, (1109), 0 states have call successors, (0), 0 states 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 11:50:06,313 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:50:06,314 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 315 [2022-11-16 11:50:06,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:50:07,106 INFO L130 PetriNetUnfolder]: 110/1602 cut-off events. [2022-11-16 11:50:07,106 INFO L131 PetriNetUnfolder]: For 174/174 co-relation queries the response was YES. [2022-11-16 11:50:07,158 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2140 conditions, 1602 events. 110/1602 cut-off events. For 174/174 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 9018 event pairs, 24 based on Foata normal form. 4/1334 useless extension candidates. Maximal degree in co-relation 2004. Up to 95 conditions per place. [2022-11-16 11:50:07,178 INFO L137 encePairwiseOnDemand]: 310/315 looper letters, 37 selfloop transitions, 5 changer transitions 0/310 dead transitions. [2022-11-16 11:50:07,178 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 310 transitions, 889 flow [2022-11-16 11:50:07,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:50:07,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 11:50:07,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1138 transitions. [2022-11-16 11:50:07,182 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9031746031746032 [2022-11-16 11:50:07,182 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1138 transitions. [2022-11-16 11:50:07,182 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1138 transitions. [2022-11-16 11:50:07,183 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:50:07,183 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1138 transitions. [2022-11-16 11:50:07,186 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 284.5) internal successors, (1138), 4 states have internal predecessors, (1138), 0 states have call successors, (0), 0 states 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 11:50:07,188 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 315.0) internal successors, (1575), 5 states have internal predecessors, (1575), 0 states have call successors, (0), 0 states 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 11:50:07,189 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 315.0) internal successors, (1575), 5 states have internal predecessors, (1575), 0 states have call successors, (0), 0 states 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 11:50:07,190 INFO L175 Difference]: Start difference. First operand has 310 places, 300 transitions, 780 flow. Second operand 4 states and 1138 transitions. [2022-11-16 11:50:07,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 310 transitions, 889 flow [2022-11-16 11:50:07,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 310 transitions, 885 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:50:07,203 INFO L231 Difference]: Finished difference. Result has 313 places, 300 transitions, 791 flow [2022-11-16 11:50:07,204 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=770, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=791, PETRI_PLACES=313, PETRI_TRANSITIONS=300} [2022-11-16 11:50:07,206 INFO L288 CegarLoopForPetriNet]: 280 programPoint places, 33 predicate places. [2022-11-16 11:50:07,207 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 300 transitions, 791 flow [2022-11-16 11:50:07,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 277.25) internal successors, (1109), 4 states have internal predecessors, (1109), 0 states have call successors, (0), 0 states 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 11:50:07,208 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:50:07,208 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 11:50:07,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 11:50:07,209 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-11-16 11:50:07,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:50:07,210 INFO L85 PathProgramCache]: Analyzing trace with hash -171612259, now seen corresponding path program 1 times [2022-11-16 11:50:07,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:50:07,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224191857] [2022-11-16 11:50:07,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:50:07,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:50:07,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:50:07,343 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 11:50:07,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:50:07,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224191857] [2022-11-16 11:50:07,344 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224191857] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:50:07,344 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:50:07,345 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:50:07,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143804043] [2022-11-16 11:50:07,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:50:07,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:50:07,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:50:07,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:50:07,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:50:07,348 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 270 out of 315 [2022-11-16 11:50:07,350 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 300 transitions, 791 flow. Second operand has 6 states, 6 states have (on average 272.3333333333333) internal successors, (1634), 6 states have internal predecessors, (1634), 0 states have call successors, (0), 0 states 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 11:50:07,351 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:50:07,351 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 270 of 315 [2022-11-16 11:50:07,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:50:08,267 INFO L130 PetriNetUnfolder]: 113/1609 cut-off events. [2022-11-16 11:50:08,267 INFO L131 PetriNetUnfolder]: For 234/234 co-relation queries the response was YES. [2022-11-16 11:50:08,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2197 conditions, 1609 events. 113/1609 cut-off events. For 234/234 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 9152 event pairs, 0 based on Foata normal form. 0/1339 useless extension candidates. Maximal degree in co-relation 1837. Up to 120 conditions per place. [2022-11-16 11:50:08,359 INFO L137 encePairwiseOnDemand]: 305/315 looper letters, 50 selfloop transitions, 11 changer transitions 0/322 dead transitions. [2022-11-16 11:50:08,359 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 322 transitions, 987 flow [2022-11-16 11:50:08,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 11:50:08,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-16 11:50:08,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2219 transitions. [2022-11-16 11:50:08,365 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8805555555555555 [2022-11-16 11:50:08,365 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2219 transitions. [2022-11-16 11:50:08,365 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2219 transitions. [2022-11-16 11:50:08,367 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:50:08,367 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2219 transitions. [2022-11-16 11:50:08,373 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 277.375) internal successors, (2219), 8 states have internal predecessors, (2219), 0 states have call successors, (0), 0 states 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 11:50:08,378 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 315.0) internal successors, (2835), 9 states have internal predecessors, (2835), 0 states have call successors, (0), 0 states 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 11:50:08,379 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 315.0) internal successors, (2835), 9 states have internal predecessors, (2835), 0 states have call successors, (0), 0 states 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 11:50:08,380 INFO L175 Difference]: Start difference. First operand has 313 places, 300 transitions, 791 flow. Second operand 8 states and 2219 transitions. [2022-11-16 11:50:08,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 322 transitions, 987 flow [2022-11-16 11:50:08,385 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 322 transitions, 975 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 11:50:08,390 INFO L231 Difference]: Finished difference. Result has 321 places, 302 transitions, 838 flow [2022-11-16 11:50:08,391 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=784, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=838, PETRI_PLACES=321, PETRI_TRANSITIONS=302} [2022-11-16 11:50:08,391 INFO L288 CegarLoopForPetriNet]: 280 programPoint places, 41 predicate places. [2022-11-16 11:50:08,392 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 302 transitions, 838 flow [2022-11-16 11:50:08,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 272.3333333333333) internal successors, (1634), 6 states have internal predecessors, (1634), 0 states have call successors, (0), 0 states 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 11:50:08,393 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:50:08,393 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 11:50:08,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 11:50:08,393 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-11-16 11:50:08,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:50:08,394 INFO L85 PathProgramCache]: Analyzing trace with hash -835270080, now seen corresponding path program 1 times [2022-11-16 11:50:08,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:50:08,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007334775] [2022-11-16 11:50:08,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:50:08,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:50:08,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:50:08,523 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 11:50:08,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:50:08,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007334775] [2022-11-16 11:50:08,526 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007334775] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:50:08,526 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:50:08,527 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:50:08,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293895263] [2022-11-16 11:50:08,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:50:08,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:50:08,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:50:08,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:50:08,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:50:08,536 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 271 out of 315 [2022-11-16 11:50:08,538 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 302 transitions, 838 flow. Second operand has 5 states, 5 states have (on average 273.6) internal successors, (1368), 5 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states 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 11:50:08,539 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:50:08,539 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 271 of 315 [2022-11-16 11:50:08,539 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:50:09,335 INFO L130 PetriNetUnfolder]: 125/1627 cut-off events. [2022-11-16 11:50:09,335 INFO L131 PetriNetUnfolder]: For 292/292 co-relation queries the response was YES. [2022-11-16 11:50:09,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2286 conditions, 1627 events. 125/1627 cut-off events. For 292/292 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 9356 event pairs, 37 based on Foata normal form. 0/1361 useless extension candidates. Maximal degree in co-relation 2126. Up to 128 conditions per place. [2022-11-16 11:50:09,439 INFO L137 encePairwiseOnDemand]: 307/315 looper letters, 44 selfloop transitions, 9 changer transitions 0/317 dead transitions. [2022-11-16 11:50:09,439 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 317 transitions, 973 flow [2022-11-16 11:50:09,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 11:50:09,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-16 11:50:09,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1674 transitions. [2022-11-16 11:50:09,444 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8857142857142857 [2022-11-16 11:50:09,445 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1674 transitions. [2022-11-16 11:50:09,445 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1674 transitions. [2022-11-16 11:50:09,446 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:50:09,446 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1674 transitions. [2022-11-16 11:50:09,451 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 279.0) internal successors, (1674), 6 states have internal predecessors, (1674), 0 states have call successors, (0), 0 states 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 11:50:09,455 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 315.0) internal successors, (2205), 7 states have internal predecessors, (2205), 0 states have call successors, (0), 0 states 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 11:50:09,456 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 315.0) internal successors, (2205), 7 states have internal predecessors, (2205), 0 states have call successors, (0), 0 states 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 11:50:09,456 INFO L175 Difference]: Start difference. First operand has 321 places, 302 transitions, 838 flow. Second operand 6 states and 1674 transitions. [2022-11-16 11:50:09,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 317 transitions, 973 flow [2022-11-16 11:50:09,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 317 transitions, 949 flow, removed 2 selfloop flow, removed 7 redundant places. [2022-11-16 11:50:09,467 INFO L231 Difference]: Finished difference. Result has 321 places, 304 transitions, 847 flow [2022-11-16 11:50:09,467 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=800, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=292, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=847, PETRI_PLACES=321, PETRI_TRANSITIONS=304} [2022-11-16 11:50:09,468 INFO L288 CegarLoopForPetriNet]: 280 programPoint places, 41 predicate places. [2022-11-16 11:50:09,468 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 304 transitions, 847 flow [2022-11-16 11:50:09,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 273.6) internal successors, (1368), 5 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states 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 11:50:09,469 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:50:09,469 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 11:50:09,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 11:50:09,470 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-11-16 11:50:09,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:50:09,470 INFO L85 PathProgramCache]: Analyzing trace with hash -52923283, now seen corresponding path program 1 times [2022-11-16 11:50:09,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:50:09,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491324726] [2022-11-16 11:50:09,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:50:09,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:50:09,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:50:09,545 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 11:50:09,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:50:09,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491324726] [2022-11-16 11:50:09,546 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491324726] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:50:09,547 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:50:09,547 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:50:09,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440074571] [2022-11-16 11:50:09,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:50:09,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:50:09,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:50:09,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:50:09,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:50:09,550 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 315 [2022-11-16 11:50:09,552 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 304 transitions, 847 flow. Second operand has 4 states, 4 states have (on average 277.5) internal successors, (1110), 4 states have internal predecessors, (1110), 0 states have call successors, (0), 0 states 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 11:50:09,552 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:50:09,552 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 315 [2022-11-16 11:50:09,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:50:10,961 INFO L130 PetriNetUnfolder]: 498/4323 cut-off events. [2022-11-16 11:50:10,961 INFO L131 PetriNetUnfolder]: For 935/940 co-relation queries the response was YES. [2022-11-16 11:50:11,017 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5711 conditions, 4323 events. 498/4323 cut-off events. For 935/940 co-relation queries the response was YES. Maximal size of possible extension queue 276. Compared 41792 event pairs, 144 based on Foata normal form. 14/3315 useless extension candidates. Maximal degree in co-relation 5614. Up to 397 conditions per place. [2022-11-16 11:50:11,050 INFO L137 encePairwiseOnDemand]: 310/315 looper letters, 36 selfloop transitions, 5 changer transitions 0/313 dead transitions. [2022-11-16 11:50:11,050 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 313 transitions, 949 flow [2022-11-16 11:50:11,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:50:11,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 11:50:11,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1137 transitions. [2022-11-16 11:50:11,054 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9023809523809524 [2022-11-16 11:50:11,054 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1137 transitions. [2022-11-16 11:50:11,055 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1137 transitions. [2022-11-16 11:50:11,056 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:50:11,056 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1137 transitions. [2022-11-16 11:50:11,059 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 284.25) internal successors, (1137), 4 states have internal predecessors, (1137), 0 states have call successors, (0), 0 states 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 11:50:11,063 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 315.0) internal successors, (1575), 5 states have internal predecessors, (1575), 0 states have call successors, (0), 0 states 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 11:50:11,064 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 315.0) internal successors, (1575), 5 states have internal predecessors, (1575), 0 states have call successors, (0), 0 states 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 11:50:11,064 INFO L175 Difference]: Start difference. First operand has 321 places, 304 transitions, 847 flow. Second operand 4 states and 1137 transitions. [2022-11-16 11:50:11,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 313 transitions, 949 flow [2022-11-16 11:50:11,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 313 transitions, 933 flow, removed 3 selfloop flow, removed 3 redundant places. [2022-11-16 11:50:11,076 INFO L231 Difference]: Finished difference. Result has 322 places, 304 transitions, 846 flow [2022-11-16 11:50:11,077 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=825, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=298, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=846, PETRI_PLACES=322, PETRI_TRANSITIONS=304} [2022-11-16 11:50:11,077 INFO L288 CegarLoopForPetriNet]: 280 programPoint places, 42 predicate places. [2022-11-16 11:50:11,078 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 304 transitions, 846 flow [2022-11-16 11:50:11,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 277.5) internal successors, (1110), 4 states have internal predecessors, (1110), 0 states have call successors, (0), 0 states 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 11:50:11,079 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:50:11,079 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 11:50:11,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 11:50:11,080 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-11-16 11:50:11,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:50:11,081 INFO L85 PathProgramCache]: Analyzing trace with hash -1640620869, now seen corresponding path program 1 times [2022-11-16 11:50:11,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:50:11,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134157249] [2022-11-16 11:50:11,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:50:11,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:50:11,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:50:11,195 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 11:50:11,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:50:11,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134157249] [2022-11-16 11:50:11,197 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134157249] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:50:11,197 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:50:11,197 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:50:11,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561720564] [2022-11-16 11:50:11,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:50:11,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:50:11,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:50:11,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:50:11,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:50:11,202 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 270 out of 315 [2022-11-16 11:50:11,212 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 304 transitions, 846 flow. Second operand has 6 states, 6 states have (on average 272.5) internal successors, (1635), 6 states have internal predecessors, (1635), 0 states have call successors, (0), 0 states 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 11:50:11,212 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:50:11,212 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 270 of 315 [2022-11-16 11:50:11,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:50:12,498 INFO L130 PetriNetUnfolder]: 516/4357 cut-off events. [2022-11-16 11:50:12,498 INFO L131 PetriNetUnfolder]: For 1134/1139 co-relation queries the response was YES. [2022-11-16 11:50:12,550 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5887 conditions, 4357 events. 516/4357 cut-off events. For 1134/1139 co-relation queries the response was YES. Maximal size of possible extension queue 298. Compared 44995 event pairs, 0 based on Foata normal form. 0/3338 useless extension candidates. Maximal degree in co-relation 5783. Up to 497 conditions per place. [2022-11-16 11:50:12,576 INFO L137 encePairwiseOnDemand]: 305/315 looper letters, 48 selfloop transitions, 11 changer transitions 0/324 dead transitions. [2022-11-16 11:50:12,576 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 324 transitions, 1027 flow [2022-11-16 11:50:12,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 11:50:12,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-16 11:50:12,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2217 transitions. [2022-11-16 11:50:12,581 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8797619047619047 [2022-11-16 11:50:12,581 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2217 transitions. [2022-11-16 11:50:12,581 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2217 transitions. [2022-11-16 11:50:12,583 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:50:12,583 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2217 transitions. [2022-11-16 11:50:12,588 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 277.125) internal successors, (2217), 8 states have internal predecessors, (2217), 0 states have call successors, (0), 0 states 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 11:50:12,593 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 315.0) internal successors, (2835), 9 states have internal predecessors, (2835), 0 states have call successors, (0), 0 states 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 11:50:12,594 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 315.0) internal successors, (2835), 9 states have internal predecessors, (2835), 0 states have call successors, (0), 0 states 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 11:50:12,594 INFO L175 Difference]: Start difference. First operand has 322 places, 304 transitions, 846 flow. Second operand 8 states and 2217 transitions. [2022-11-16 11:50:12,594 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 324 transitions, 1027 flow [2022-11-16 11:50:12,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 324 transitions, 1015 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 11:50:12,603 INFO L231 Difference]: Finished difference. Result has 330 places, 306 transitions, 893 flow [2022-11-16 11:50:12,604 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=839, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=293, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=893, PETRI_PLACES=330, PETRI_TRANSITIONS=306} [2022-11-16 11:50:12,605 INFO L288 CegarLoopForPetriNet]: 280 programPoint places, 50 predicate places. [2022-11-16 11:50:12,605 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 306 transitions, 893 flow [2022-11-16 11:50:12,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 272.5) internal successors, (1635), 6 states have internal predecessors, (1635), 0 states have call successors, (0), 0 states 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 11:50:12,606 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:50:12,606 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 11:50:12,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-16 11:50:12,606 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-11-16 11:50:12,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:50:12,607 INFO L85 PathProgramCache]: Analyzing trace with hash -2044668126, now seen corresponding path program 1 times [2022-11-16 11:50:12,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:50:12,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248656999] [2022-11-16 11:50:12,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:50:12,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:50:12,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:50:12,744 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 11:50:12,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:50:12,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248656999] [2022-11-16 11:50:12,745 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248656999] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:50:12,745 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:50:12,745 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 11:50:12,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886920085] [2022-11-16 11:50:12,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:50:12,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 11:50:12,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:50:12,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 11:50:12,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:50:12,749 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 264 out of 315 [2022-11-16 11:50:12,751 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 306 transitions, 893 flow. Second operand has 8 states, 8 states have (on average 266.125) internal successors, (2129), 8 states have internal predecessors, (2129), 0 states have call successors, (0), 0 states 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 11:50:12,751 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:50:12,752 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 264 of 315 [2022-11-16 11:50:12,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:50:13,711 INFO L130 PetriNetUnfolder]: 150/2135 cut-off events. [2022-11-16 11:50:13,711 INFO L131 PetriNetUnfolder]: For 426/426 co-relation queries the response was YES. [2022-11-16 11:50:13,760 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3007 conditions, 2135 events. 150/2135 cut-off events. For 426/426 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 13838 event pairs, 2 based on Foata normal form. 0/1787 useless extension candidates. Maximal degree in co-relation 2294. Up to 91 conditions per place. [2022-11-16 11:50:13,783 INFO L137 encePairwiseOnDemand]: 302/315 looper letters, 66 selfloop transitions, 21 changer transitions 0/345 dead transitions. [2022-11-16 11:50:13,783 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 345 transitions, 1191 flow [2022-11-16 11:50:13,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-16 11:50:13,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-16 11:50:13,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3247 transitions. [2022-11-16 11:50:13,792 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.858994708994709 [2022-11-16 11:50:13,792 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3247 transitions. [2022-11-16 11:50:13,792 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3247 transitions. [2022-11-16 11:50:13,795 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:50:13,795 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3247 transitions. [2022-11-16 11:50:13,804 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 270.5833333333333) internal successors, (3247), 12 states have internal predecessors, (3247), 0 states have call successors, (0), 0 states 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 11:50:13,811 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 315.0) internal successors, (4095), 13 states have internal predecessors, (4095), 0 states have call successors, (0), 0 states 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 11:50:13,813 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 315.0) internal successors, (4095), 13 states have internal predecessors, (4095), 0 states have call successors, (0), 0 states 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 11:50:13,813 INFO L175 Difference]: Start difference. First operand has 330 places, 306 transitions, 893 flow. Second operand 12 states and 3247 transitions. [2022-11-16 11:50:13,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 345 transitions, 1191 flow [2022-11-16 11:50:13,819 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 345 transitions, 1179 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-16 11:50:13,824 INFO L231 Difference]: Finished difference. Result has 341 places, 316 transitions, 1001 flow [2022-11-16 11:50:13,825 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=881, PETRI_DIFFERENCE_MINUEND_PLACES=325, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1001, PETRI_PLACES=341, PETRI_TRANSITIONS=316} [2022-11-16 11:50:13,826 INFO L288 CegarLoopForPetriNet]: 280 programPoint places, 61 predicate places. [2022-11-16 11:50:13,826 INFO L495 AbstractCegarLoop]: Abstraction has has 341 places, 316 transitions, 1001 flow [2022-11-16 11:50:13,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 266.125) internal successors, (2129), 8 states have internal predecessors, (2129), 0 states have call successors, (0), 0 states 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 11:50:13,827 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:50:13,827 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 11:50:13,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-16 11:50:13,828 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-11-16 11:50:13,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:50:13,828 INFO L85 PathProgramCache]: Analyzing trace with hash 1039798336, now seen corresponding path program 1 times [2022-11-16 11:50:13,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:50:13,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799150022] [2022-11-16 11:50:13,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:50:13,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:50:13,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:50:13,975 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 11:50:13,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:50:13,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799150022] [2022-11-16 11:50:13,976 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799150022] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:50:13,976 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:50:13,976 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 11:50:13,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187101440] [2022-11-16 11:50:13,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:50:13,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 11:50:13,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:50:13,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 11:50:13,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:50:13,980 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 264 out of 315 [2022-11-16 11:50:13,983 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 316 transitions, 1001 flow. Second operand has 8 states, 8 states have (on average 266.25) internal successors, (2130), 8 states have internal predecessors, (2130), 0 states have call successors, (0), 0 states 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 11:50:13,983 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:50:13,984 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 264 of 315 [2022-11-16 11:50:13,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:50:15,039 INFO L130 PetriNetUnfolder]: 128/1634 cut-off events. [2022-11-16 11:50:15,040 INFO L131 PetriNetUnfolder]: For 507/507 co-relation queries the response was YES. [2022-11-16 11:50:15,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2491 conditions, 1634 events. 128/1634 cut-off events. For 507/507 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 9444 event pairs, 1 based on Foata normal form. 0/1385 useless extension candidates. Maximal degree in co-relation 2115. Up to 84 conditions per place. [2022-11-16 11:50:15,105 INFO L137 encePairwiseOnDemand]: 301/315 looper letters, 65 selfloop transitions, 20 changer transitions 0/349 dead transitions. [2022-11-16 11:50:15,105 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 352 places, 349 transitions, 1278 flow [2022-11-16 11:50:15,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-16 11:50:15,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-16 11:50:15,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3249 transitions. [2022-11-16 11:50:15,115 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8595238095238096 [2022-11-16 11:50:15,116 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3249 transitions. [2022-11-16 11:50:15,116 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3249 transitions. [2022-11-16 11:50:15,118 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:50:15,119 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3249 transitions. [2022-11-16 11:50:15,127 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 270.75) internal successors, (3249), 12 states have internal predecessors, (3249), 0 states have call successors, (0), 0 states 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 11:50:15,134 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 315.0) internal successors, (4095), 13 states have internal predecessors, (4095), 0 states have call successors, (0), 0 states 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 11:50:15,136 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 315.0) internal successors, (4095), 13 states have internal predecessors, (4095), 0 states have call successors, (0), 0 states 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 11:50:15,136 INFO L175 Difference]: Start difference. First operand has 341 places, 316 transitions, 1001 flow. Second operand 12 states and 3249 transitions. [2022-11-16 11:50:15,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 352 places, 349 transitions, 1278 flow [2022-11-16 11:50:15,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 348 places, 349 transitions, 1262 flow, removed 2 selfloop flow, removed 4 redundant places. [2022-11-16 11:50:15,149 INFO L231 Difference]: Finished difference. Result has 352 places, 323 transitions, 1086 flow [2022-11-16 11:50:15,150 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=985, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=316, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=298, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1086, PETRI_PLACES=352, PETRI_TRANSITIONS=323} [2022-11-16 11:50:15,151 INFO L288 CegarLoopForPetriNet]: 280 programPoint places, 72 predicate places. [2022-11-16 11:50:15,151 INFO L495 AbstractCegarLoop]: Abstraction has has 352 places, 323 transitions, 1086 flow [2022-11-16 11:50:15,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 266.25) internal successors, (2130), 8 states have internal predecessors, (2130), 0 states have call successors, (0), 0 states 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 11:50:15,152 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:50:15,152 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 11:50:15,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-16 11:50:15,153 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-11-16 11:50:15,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:50:15,154 INFO L85 PathProgramCache]: Analyzing trace with hash 491699742, now seen corresponding path program 1 times [2022-11-16 11:50:15,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:50:15,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875718567] [2022-11-16 11:50:15,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:50:15,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:50:15,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:50:15,237 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 11:50:15,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:50:15,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875718567] [2022-11-16 11:50:15,238 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875718567] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:50:15,238 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:50:15,239 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:50:15,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435500540] [2022-11-16 11:50:15,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:50:15,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:50:15,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:50:15,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:50:15,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:50:15,242 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 315 [2022-11-16 11:50:15,243 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 323 transitions, 1086 flow. Second operand has 4 states, 4 states have (on average 277.75) internal successors, (1111), 4 states have internal predecessors, (1111), 0 states have call successors, (0), 0 states 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 11:50:15,243 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:50:15,244 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 315 [2022-11-16 11:50:15,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:50:17,006 INFO L130 PetriNetUnfolder]: 578/4955 cut-off events. [2022-11-16 11:50:17,006 INFO L131 PetriNetUnfolder]: For 1598/1603 co-relation queries the response was YES. [2022-11-16 11:50:17,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6780 conditions, 4955 events. 578/4955 cut-off events. For 1598/1603 co-relation queries the response was YES. Maximal size of possible extension queue 318. Compared 51579 event pairs, 222 based on Foata normal form. 14/3804 useless extension candidates. Maximal degree in co-relation 6664. Up to 525 conditions per place. [2022-11-16 11:50:17,122 INFO L137 encePairwiseOnDemand]: 310/315 looper letters, 36 selfloop transitions, 5 changer transitions 0/331 dead transitions. [2022-11-16 11:50:17,123 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 331 transitions, 1188 flow [2022-11-16 11:50:17,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:50:17,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 11:50:17,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1135 transitions. [2022-11-16 11:50:17,126 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9007936507936508 [2022-11-16 11:50:17,126 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1135 transitions. [2022-11-16 11:50:17,126 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1135 transitions. [2022-11-16 11:50:17,127 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:50:17,127 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1135 transitions. [2022-11-16 11:50:17,129 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 283.75) internal successors, (1135), 4 states have internal predecessors, (1135), 0 states have call successors, (0), 0 states 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 11:50:17,132 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 315.0) internal successors, (1575), 5 states have internal predecessors, (1575), 0 states have call successors, (0), 0 states 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 11:50:17,132 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 315.0) internal successors, (1575), 5 states have internal predecessors, (1575), 0 states have call successors, (0), 0 states 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 11:50:17,133 INFO L175 Difference]: Start difference. First operand has 352 places, 323 transitions, 1086 flow. Second operand 4 states and 1135 transitions. [2022-11-16 11:50:17,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 331 transitions, 1188 flow [2022-11-16 11:50:17,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 331 transitions, 1162 flow, removed 2 selfloop flow, removed 7 redundant places. [2022-11-16 11:50:17,146 INFO L231 Difference]: Finished difference. Result has 349 places, 323 transitions, 1082 flow [2022-11-16 11:50:17,146 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=1047, PETRI_DIFFERENCE_MINUEND_PLACES=344, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=316, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1082, PETRI_PLACES=349, PETRI_TRANSITIONS=323} [2022-11-16 11:50:17,147 INFO L288 CegarLoopForPetriNet]: 280 programPoint places, 69 predicate places. [2022-11-16 11:50:17,147 INFO L495 AbstractCegarLoop]: Abstraction has has 349 places, 323 transitions, 1082 flow [2022-11-16 11:50:17,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 277.75) internal successors, (1111), 4 states have internal predecessors, (1111), 0 states have call successors, (0), 0 states 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 11:50:17,148 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:50:17,148 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 11:50:17,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-16 11:50:17,148 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-11-16 11:50:17,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:50:17,149 INFO L85 PathProgramCache]: Analyzing trace with hash -1708205948, now seen corresponding path program 1 times [2022-11-16 11:50:17,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:50:17,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210938449] [2022-11-16 11:50:17,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:50:17,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:50:17,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:50:17,279 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 11:50:17,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:50:17,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210938449] [2022-11-16 11:50:17,279 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210938449] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:50:17,279 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:50:17,280 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:50:17,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860916567] [2022-11-16 11:50:17,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:50:17,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:50:17,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:50:17,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:50:17,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:50:17,283 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 255 out of 315 [2022-11-16 11:50:17,284 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 349 places, 323 transitions, 1082 flow. Second operand has 6 states, 6 states have (on average 258.3333333333333) internal successors, (1550), 6 states have internal predecessors, (1550), 0 states have call successors, (0), 0 states 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 11:50:17,284 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:50:17,285 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 255 of 315 [2022-11-16 11:50:17,285 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:50:18,288 INFO L130 PetriNetUnfolder]: 206/1781 cut-off events. [2022-11-16 11:50:18,288 INFO L131 PetriNetUnfolder]: For 563/563 co-relation queries the response was YES. [2022-11-16 11:50:18,343 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3091 conditions, 1781 events. 206/1781 cut-off events. For 563/563 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 11028 event pairs, 61 based on Foata normal form. 4/1533 useless extension candidates. Maximal degree in co-relation 2904. Up to 226 conditions per place. [2022-11-16 11:50:18,367 INFO L137 encePairwiseOnDemand]: 306/315 looper letters, 65 selfloop transitions, 14 changer transitions 0/334 dead transitions. [2022-11-16 11:50:18,367 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 355 places, 334 transitions, 1272 flow [2022-11-16 11:50:18,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 11:50:18,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 11:50:18,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1844 transitions. [2022-11-16 11:50:18,372 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.836281179138322 [2022-11-16 11:50:18,372 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1844 transitions. [2022-11-16 11:50:18,373 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1844 transitions. [2022-11-16 11:50:18,374 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:50:18,374 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1844 transitions. [2022-11-16 11:50:18,378 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 263.42857142857144) internal successors, (1844), 7 states have internal predecessors, (1844), 0 states have call successors, (0), 0 states 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 11:50:18,382 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 315.0) internal successors, (2520), 8 states have internal predecessors, (2520), 0 states have call successors, (0), 0 states 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 11:50:18,383 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 315.0) internal successors, (2520), 8 states have internal predecessors, (2520), 0 states have call successors, (0), 0 states 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 11:50:18,383 INFO L175 Difference]: Start difference. First operand has 349 places, 323 transitions, 1082 flow. Second operand 7 states and 1844 transitions. [2022-11-16 11:50:18,383 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 355 places, 334 transitions, 1272 flow [2022-11-16 11:50:18,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 354 places, 334 transitions, 1268 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:50:18,395 INFO L231 Difference]: Finished difference. Result has 359 places, 327 transitions, 1151 flow [2022-11-16 11:50:18,396 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=1072, PETRI_DIFFERENCE_MINUEND_PLACES=348, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=322, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=308, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1151, PETRI_PLACES=359, PETRI_TRANSITIONS=327} [2022-11-16 11:50:18,397 INFO L288 CegarLoopForPetriNet]: 280 programPoint places, 79 predicate places. [2022-11-16 11:50:18,397 INFO L495 AbstractCegarLoop]: Abstraction has has 359 places, 327 transitions, 1151 flow [2022-11-16 11:50:18,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 258.3333333333333) internal successors, (1550), 6 states have internal predecessors, (1550), 0 states have call successors, (0), 0 states 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 11:50:18,398 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:50:18,398 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 11:50:18,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-16 11:50:18,398 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-11-16 11:50:18,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:50:18,399 INFO L85 PathProgramCache]: Analyzing trace with hash -687745817, now seen corresponding path program 1 times [2022-11-16 11:50:18,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:50:18,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004672471] [2022-11-16 11:50:18,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:50:18,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:50:18,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:50:18,526 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 11:50:18,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:50:18,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004672471] [2022-11-16 11:50:18,527 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004672471] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:50:18,527 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:50:18,527 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:50:18,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504068814] [2022-11-16 11:50:18,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:50:18,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:50:18,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:50:18,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:50:18,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:50:18,530 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 255 out of 315 [2022-11-16 11:50:18,531 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 327 transitions, 1151 flow. Second operand has 6 states, 6 states have (on average 258.5) internal successors, (1551), 6 states have internal predecessors, (1551), 0 states have call successors, (0), 0 states 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 11:50:18,532 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:50:18,532 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 255 of 315 [2022-11-16 11:50:18,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:50:19,385 INFO L130 PetriNetUnfolder]: 200/1771 cut-off events. [2022-11-16 11:50:19,385 INFO L131 PetriNetUnfolder]: For 797/797 co-relation queries the response was YES. [2022-11-16 11:50:19,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3179 conditions, 1771 events. 200/1771 cut-off events. For 797/797 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 10979 event pairs, 50 based on Foata normal form. 4/1543 useless extension candidates. Maximal degree in co-relation 2976. Up to 245 conditions per place. [2022-11-16 11:50:19,438 INFO L137 encePairwiseOnDemand]: 305/315 looper letters, 73 selfloop transitions, 16 changer transitions 0/347 dead transitions. [2022-11-16 11:50:19,439 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 347 transitions, 1413 flow [2022-11-16 11:50:19,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 11:50:19,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 11:50:19,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1852 transitions. [2022-11-16 11:50:19,443 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8399092970521542 [2022-11-16 11:50:19,443 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1852 transitions. [2022-11-16 11:50:19,444 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1852 transitions. [2022-11-16 11:50:19,445 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:50:19,445 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1852 transitions. [2022-11-16 11:50:19,448 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 264.57142857142856) internal successors, (1852), 7 states have internal predecessors, (1852), 0 states have call successors, (0), 0 states 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 11:50:19,452 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 315.0) internal successors, (2520), 8 states have internal predecessors, (2520), 0 states have call successors, (0), 0 states 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 11:50:19,453 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 315.0) internal successors, (2520), 8 states have internal predecessors, (2520), 0 states have call successors, (0), 0 states 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 11:50:19,453 INFO L175 Difference]: Start difference. First operand has 359 places, 327 transitions, 1151 flow. Second operand 7 states and 1852 transitions. [2022-11-16 11:50:19,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 347 transitions, 1413 flow [2022-11-16 11:50:19,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 364 places, 347 transitions, 1403 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:50:19,466 INFO L231 Difference]: Finished difference. Result has 369 places, 334 transitions, 1248 flow [2022-11-16 11:50:19,466 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=1143, PETRI_DIFFERENCE_MINUEND_PLACES=358, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=327, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=311, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1248, PETRI_PLACES=369, PETRI_TRANSITIONS=334} [2022-11-16 11:50:19,467 INFO L288 CegarLoopForPetriNet]: 280 programPoint places, 89 predicate places. [2022-11-16 11:50:19,467 INFO L495 AbstractCegarLoop]: Abstraction has has 369 places, 334 transitions, 1248 flow [2022-11-16 11:50:19,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 258.5) internal successors, (1551), 6 states have internal predecessors, (1551), 0 states have call successors, (0), 0 states 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 11:50:19,468 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:50:19,468 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 11:50:19,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-16 11:50:19,468 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-11-16 11:50:19,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:50:19,469 INFO L85 PathProgramCache]: Analyzing trace with hash -562743168, now seen corresponding path program 1 times [2022-11-16 11:50:19,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:50:19,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683981810] [2022-11-16 11:50:19,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:50:19,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:50:19,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:50:19,588 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 11:50:19,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:50:19,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683981810] [2022-11-16 11:50:19,589 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683981810] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:50:19,589 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:50:19,589 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 11:50:19,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200211790] [2022-11-16 11:50:19,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:50:19,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 11:50:19,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:50:19,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 11:50:19,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:50:19,593 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 264 out of 315 [2022-11-16 11:50:19,595 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 369 places, 334 transitions, 1248 flow. Second operand has 8 states, 8 states have (on average 266.25) internal successors, (2130), 8 states have internal predecessors, (2130), 0 states have call successors, (0), 0 states 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 11:50:19,595 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:50:19,595 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 264 of 315 [2022-11-16 11:50:19,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:50:21,308 INFO L130 PetriNetUnfolder]: 734/5120 cut-off events. [2022-11-16 11:50:21,309 INFO L131 PetriNetUnfolder]: For 1980/1985 co-relation queries the response was YES. [2022-11-16 11:50:21,393 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7541 conditions, 5120 events. 734/5120 cut-off events. For 1980/1985 co-relation queries the response was YES. Maximal size of possible extension queue 439. Compared 56567 event pairs, 6 based on Foata normal form. 0/3903 useless extension candidates. Maximal degree in co-relation 7411. Up to 606 conditions per place. [2022-11-16 11:50:21,415 INFO L137 encePairwiseOnDemand]: 302/315 looper letters, 60 selfloop transitions, 20 changer transitions 0/368 dead transitions. [2022-11-16 11:50:21,415 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 380 places, 368 transitions, 1497 flow [2022-11-16 11:50:21,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-16 11:50:21,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-16 11:50:21,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3245 transitions. [2022-11-16 11:50:21,423 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8584656084656085 [2022-11-16 11:50:21,423 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3245 transitions. [2022-11-16 11:50:21,423 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3245 transitions. [2022-11-16 11:50:21,425 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:50:21,425 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3245 transitions. [2022-11-16 11:50:21,431 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 270.4166666666667) internal successors, (3245), 12 states have internal predecessors, (3245), 0 states have call successors, (0), 0 states 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 11:50:21,437 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 315.0) internal successors, (4095), 13 states have internal predecessors, (4095), 0 states have call successors, (0), 0 states 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 11:50:21,438 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 315.0) internal successors, (4095), 13 states have internal predecessors, (4095), 0 states have call successors, (0), 0 states 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 11:50:21,439 INFO L175 Difference]: Start difference. First operand has 369 places, 334 transitions, 1248 flow. Second operand 12 states and 3245 transitions. [2022-11-16 11:50:21,439 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 380 places, 368 transitions, 1497 flow [2022-11-16 11:50:21,450 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 379 places, 368 transitions, 1488 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:50:21,455 INFO L231 Difference]: Finished difference. Result has 384 places, 342 transitions, 1339 flow [2022-11-16 11:50:21,456 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=1239, PETRI_DIFFERENCE_MINUEND_PLACES=368, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=334, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=316, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1339, PETRI_PLACES=384, PETRI_TRANSITIONS=342} [2022-11-16 11:50:21,456 INFO L288 CegarLoopForPetriNet]: 280 programPoint places, 104 predicate places. [2022-11-16 11:50:21,456 INFO L495 AbstractCegarLoop]: Abstraction has has 384 places, 342 transitions, 1339 flow [2022-11-16 11:50:21,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 266.25) internal successors, (2130), 8 states have internal predecessors, (2130), 0 states have call successors, (0), 0 states 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 11:50:21,457 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:50:21,458 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 11:50:21,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-16 11:50:21,458 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-11-16 11:50:21,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:50:21,458 INFO L85 PathProgramCache]: Analyzing trace with hash -265168108, now seen corresponding path program 1 times [2022-11-16 11:50:21,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:50:21,459 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822237424] [2022-11-16 11:50:21,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:50:21,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:50:21,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:50:21,586 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 11:50:21,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:50:21,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822237424] [2022-11-16 11:50:21,589 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822237424] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:50:21,589 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:50:21,589 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 11:50:21,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330929093] [2022-11-16 11:50:21,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:50:21,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 11:50:21,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:50:21,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 11:50:21,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:50:21,593 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 264 out of 315 [2022-11-16 11:50:21,595 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 384 places, 342 transitions, 1339 flow. Second operand has 8 states, 8 states have (on average 266.375) internal successors, (2131), 8 states have internal predecessors, (2131), 0 states have call successors, (0), 0 states 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 11:50:21,595 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:50:21,596 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 264 of 315 [2022-11-16 11:50:21,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:50:23,133 INFO L130 PetriNetUnfolder]: 674/5046 cut-off events. [2022-11-16 11:50:23,133 INFO L131 PetriNetUnfolder]: For 2726/2731 co-relation queries the response was YES. [2022-11-16 11:50:23,216 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7739 conditions, 5046 events. 674/5046 cut-off events. For 2726/2731 co-relation queries the response was YES. Maximal size of possible extension queue 401. Compared 54493 event pairs, 6 based on Foata normal form. 0/3921 useless extension candidates. Maximal degree in co-relation 7600. Up to 546 conditions per place. [2022-11-16 11:50:23,242 INFO L137 encePairwiseOnDemand]: 301/315 looper letters, 62 selfloop transitions, 21 changer transitions 0/374 dead transitions. [2022-11-16 11:50:23,243 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 395 places, 374 transitions, 1600 flow [2022-11-16 11:50:23,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-16 11:50:23,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-16 11:50:23,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3247 transitions. [2022-11-16 11:50:23,248 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.858994708994709 [2022-11-16 11:50:23,248 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3247 transitions. [2022-11-16 11:50:23,248 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3247 transitions. [2022-11-16 11:50:23,249 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:50:23,249 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3247 transitions. [2022-11-16 11:50:23,255 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 270.5833333333333) internal successors, (3247), 12 states have internal predecessors, (3247), 0 states have call successors, (0), 0 states 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 11:50:23,261 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 315.0) internal successors, (4095), 13 states have internal predecessors, (4095), 0 states have call successors, (0), 0 states 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 11:50:23,263 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 315.0) internal successors, (4095), 13 states have internal predecessors, (4095), 0 states have call successors, (0), 0 states 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 11:50:23,263 INFO L175 Difference]: Start difference. First operand has 384 places, 342 transitions, 1339 flow. Second operand 12 states and 3247 transitions. [2022-11-16 11:50:23,263 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 395 places, 374 transitions, 1600 flow [2022-11-16 11:50:23,277 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 391 places, 374 transitions, 1582 flow, removed 2 selfloop flow, removed 4 redundant places. [2022-11-16 11:50:23,281 INFO L231 Difference]: Finished difference. Result has 395 places, 349 transitions, 1422 flow [2022-11-16 11:50:23,282 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=1321, PETRI_DIFFERENCE_MINUEND_PLACES=380, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=342, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=323, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1422, PETRI_PLACES=395, PETRI_TRANSITIONS=349} [2022-11-16 11:50:23,282 INFO L288 CegarLoopForPetriNet]: 280 programPoint places, 115 predicate places. [2022-11-16 11:50:23,283 INFO L495 AbstractCegarLoop]: Abstraction has has 395 places, 349 transitions, 1422 flow [2022-11-16 11:50:23,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 266.375) internal successors, (2131), 8 states have internal predecessors, (2131), 0 states have call successors, (0), 0 states 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 11:50:23,284 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:50:23,284 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 11:50:23,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-16 11:50:23,284 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-11-16 11:50:23,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:50:23,285 INFO L85 PathProgramCache]: Analyzing trace with hash -1650504552, now seen corresponding path program 1 times [2022-11-16 11:50:23,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:50:23,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26021781] [2022-11-16 11:50:23,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:50:23,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:50:23,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:50:23,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:50:23,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:50:23,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26021781] [2022-11-16 11:50:23,414 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26021781] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:50:23,414 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:50:23,414 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:50:23,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923656708] [2022-11-16 11:50:23,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:50:23,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:50:23,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:50:23,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:50:23,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:50:23,417 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 255 out of 315 [2022-11-16 11:50:23,418 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 395 places, 349 transitions, 1422 flow. Second operand has 6 states, 6 states have (on average 258.5) internal successors, (1551), 6 states have internal predecessors, (1551), 0 states have call successors, (0), 0 states 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 11:50:23,419 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:50:23,419 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 255 of 315 [2022-11-16 11:50:23,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:50:25,257 INFO L130 PetriNetUnfolder]: 1178/5508 cut-off events. [2022-11-16 11:50:25,257 INFO L131 PetriNetUnfolder]: For 3531/3536 co-relation queries the response was YES. [2022-11-16 11:50:25,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9500 conditions, 5508 events. 1178/5508 cut-off events. For 3531/3536 co-relation queries the response was YES. Maximal size of possible extension queue 722. Compared 65759 event pairs, 366 based on Foata normal form. 14/3994 useless extension candidates. Maximal degree in co-relation 9361. Up to 1118 conditions per place. [2022-11-16 11:50:25,357 INFO L137 encePairwiseOnDemand]: 306/315 looper letters, 58 selfloop transitions, 15 changer transitions 1/359 dead transitions. [2022-11-16 11:50:25,358 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 401 places, 359 transitions, 1594 flow [2022-11-16 11:50:25,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 11:50:25,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 11:50:25,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1843 transitions. [2022-11-16 11:50:25,360 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.835827664399093 [2022-11-16 11:50:25,360 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1843 transitions. [2022-11-16 11:50:25,361 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1843 transitions. [2022-11-16 11:50:25,361 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:50:25,361 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1843 transitions. [2022-11-16 11:50:25,363 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 263.2857142857143) internal successors, (1843), 7 states have internal predecessors, (1843), 0 states have call successors, (0), 0 states 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 11:50:25,365 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 315.0) internal successors, (2520), 8 states have internal predecessors, (2520), 0 states have call successors, (0), 0 states 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 11:50:25,365 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 315.0) internal successors, (2520), 8 states have internal predecessors, (2520), 0 states have call successors, (0), 0 states 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 11:50:25,366 INFO L175 Difference]: Start difference. First operand has 395 places, 349 transitions, 1422 flow. Second operand 7 states and 1843 transitions. [2022-11-16 11:50:25,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 401 places, 359 transitions, 1594 flow [2022-11-16 11:50:25,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 396 places, 359 transitions, 1576 flow, removed 2 selfloop flow, removed 5 redundant places. [2022-11-16 11:50:25,386 INFO L231 Difference]: Finished difference. Result has 401 places, 353 transitions, 1481 flow [2022-11-16 11:50:25,387 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=1398, PETRI_DIFFERENCE_MINUEND_PLACES=390, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=348, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=333, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1481, PETRI_PLACES=401, PETRI_TRANSITIONS=353} [2022-11-16 11:50:25,387 INFO L288 CegarLoopForPetriNet]: 280 programPoint places, 121 predicate places. [2022-11-16 11:50:25,387 INFO L495 AbstractCegarLoop]: Abstraction has has 401 places, 353 transitions, 1481 flow [2022-11-16 11:50:25,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 258.5) internal successors, (1551), 6 states have internal predecessors, (1551), 0 states have call successors, (0), 0 states 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 11:50:25,388 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:50:25,388 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 11:50:25,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-16 11:50:25,389 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-11-16 11:50:25,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:50:25,389 INFO L85 PathProgramCache]: Analyzing trace with hash 1100997573, now seen corresponding path program 1 times [2022-11-16 11:50:25,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:50:25,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385120445] [2022-11-16 11:50:25,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:50:25,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:50:25,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:50:25,499 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 11:50:25,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:50:25,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385120445] [2022-11-16 11:50:25,500 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385120445] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:50:25,500 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:50:25,500 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:50:25,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522880340] [2022-11-16 11:50:25,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:50:25,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:50:25,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:50:25,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:50:25,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:50:25,503 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 255 out of 315 [2022-11-16 11:50:25,504 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 401 places, 353 transitions, 1481 flow. Second operand has 6 states, 6 states have (on average 258.6666666666667) internal successors, (1552), 6 states have internal predecessors, (1552), 0 states have call successors, (0), 0 states 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 11:50:25,504 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:50:25,505 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 255 of 315 [2022-11-16 11:50:25,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:50:27,506 INFO L130 PetriNetUnfolder]: 1130/5446 cut-off events. [2022-11-16 11:50:27,507 INFO L131 PetriNetUnfolder]: For 4324/4329 co-relation queries the response was YES. [2022-11-16 11:50:27,586 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9769 conditions, 5446 events. 1130/5446 cut-off events. For 4324/4329 co-relation queries the response was YES. Maximal size of possible extension queue 690. Compared 64188 event pairs, 306 based on Foata normal form. 14/4042 useless extension candidates. Maximal degree in co-relation 9628. Up to 1196 conditions per place. [2022-11-16 11:50:27,611 INFO L137 encePairwiseOnDemand]: 305/315 looper letters, 71 selfloop transitions, 17 changer transitions 1/374 dead transitions. [2022-11-16 11:50:27,611 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 407 places, 374 transitions, 1749 flow [2022-11-16 11:50:27,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 11:50:27,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 11:50:27,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1851 transitions. [2022-11-16 11:50:27,615 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8394557823129252 [2022-11-16 11:50:27,615 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1851 transitions. [2022-11-16 11:50:27,615 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1851 transitions. [2022-11-16 11:50:27,616 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:50:27,617 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1851 transitions. [2022-11-16 11:50:27,621 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 264.42857142857144) internal successors, (1851), 7 states have internal predecessors, (1851), 0 states have call successors, (0), 0 states 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 11:50:27,625 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 315.0) internal successors, (2520), 8 states have internal predecessors, (2520), 0 states have call successors, (0), 0 states 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 11:50:27,625 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 315.0) internal successors, (2520), 8 states have internal predecessors, (2520), 0 states have call successors, (0), 0 states 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 11:50:27,626 INFO L175 Difference]: Start difference. First operand has 401 places, 353 transitions, 1481 flow. Second operand 7 states and 1851 transitions. [2022-11-16 11:50:27,626 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 407 places, 374 transitions, 1749 flow [2022-11-16 11:50:27,646 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 406 places, 374 transitions, 1738 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:50:27,652 INFO L231 Difference]: Finished difference. Result has 411 places, 360 transitions, 1581 flow [2022-11-16 11:50:27,653 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=1472, PETRI_DIFFERENCE_MINUEND_PLACES=400, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=353, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=336, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1581, PETRI_PLACES=411, PETRI_TRANSITIONS=360} [2022-11-16 11:50:27,653 INFO L288 CegarLoopForPetriNet]: 280 programPoint places, 131 predicate places. [2022-11-16 11:50:27,653 INFO L495 AbstractCegarLoop]: Abstraction has has 411 places, 360 transitions, 1581 flow [2022-11-16 11:50:27,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 258.6666666666667) internal successors, (1552), 6 states have internal predecessors, (1552), 0 states have call successors, (0), 0 states 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 11:50:27,654 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:50:27,654 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:50:27,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-16 11:50:27,655 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-11-16 11:50:27,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:50:27,655 INFO L85 PathProgramCache]: Analyzing trace with hash -1863572148, now seen corresponding path program 1 times [2022-11-16 11:50:27,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:50:27,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707950019] [2022-11-16 11:50:27,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:50:27,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:50:27,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:50:27,805 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 11:50:27,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:50:27,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707950019] [2022-11-16 11:50:27,805 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707950019] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:50:27,806 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:50:27,806 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 11:50:27,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969898643] [2022-11-16 11:50:27,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:50:27,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 11:50:27,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:50:27,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 11:50:27,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:50:27,811 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 250 out of 315 [2022-11-16 11:50:27,813 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 411 places, 360 transitions, 1581 flow. Second operand has 8 states, 8 states have (on average 252.5) internal successors, (2020), 8 states have internal predecessors, (2020), 0 states have call successors, (0), 0 states 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 11:50:27,814 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:50:27,814 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 250 of 315 [2022-11-16 11:50:27,814 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:50:29,978 INFO L130 PetriNetUnfolder]: 342/3093 cut-off events. [2022-11-16 11:50:29,979 INFO L131 PetriNetUnfolder]: For 2350/2350 co-relation queries the response was YES. [2022-11-16 11:50:30,101 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6279 conditions, 3093 events. 342/3093 cut-off events. For 2350/2350 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 24020 event pairs, 4 based on Foata normal form. 0/2770 useless extension candidates. Maximal degree in co-relation 5142. Up to 267 conditions per place. [2022-11-16 11:50:30,129 INFO L137 encePairwiseOnDemand]: 299/315 looper letters, 152 selfloop transitions, 49 changer transitions 0/483 dead transitions. [2022-11-16 11:50:30,129 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 428 places, 483 transitions, 2586 flow [2022-11-16 11:50:30,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-16 11:50:30,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-16 11:50:30,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 4661 transitions. [2022-11-16 11:50:30,133 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8220458553791887 [2022-11-16 11:50:30,134 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 4661 transitions. [2022-11-16 11:50:30,134 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 4661 transitions. [2022-11-16 11:50:30,135 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:50:30,135 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 4661 transitions. [2022-11-16 11:50:30,142 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 258.94444444444446) internal successors, (4661), 18 states have internal predecessors, (4661), 0 states have call successors, (0), 0 states 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 11:50:30,150 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 315.0) internal successors, (5985), 19 states have internal predecessors, (5985), 0 states have call successors, (0), 0 states 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 11:50:30,151 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 315.0) internal successors, (5985), 19 states have internal predecessors, (5985), 0 states have call successors, (0), 0 states 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 11:50:30,152 INFO L175 Difference]: Start difference. First operand has 411 places, 360 transitions, 1581 flow. Second operand 18 states and 4661 transitions. [2022-11-16 11:50:30,152 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 428 places, 483 transitions, 2586 flow [2022-11-16 11:50:30,171 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 427 places, 483 transitions, 2576 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:50:30,177 INFO L231 Difference]: Finished difference. Result has 434 places, 390 transitions, 1880 flow [2022-11-16 11:50:30,178 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=1571, PETRI_DIFFERENCE_MINUEND_PLACES=410, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=360, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=336, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1880, PETRI_PLACES=434, PETRI_TRANSITIONS=390} [2022-11-16 11:50:30,178 INFO L288 CegarLoopForPetriNet]: 280 programPoint places, 154 predicate places. [2022-11-16 11:50:30,179 INFO L495 AbstractCegarLoop]: Abstraction has has 434 places, 390 transitions, 1880 flow [2022-11-16 11:50:30,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 252.5) internal successors, (2020), 8 states have internal predecessors, (2020), 0 states have call successors, (0), 0 states 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 11:50:30,179 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:50:30,180 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:50:30,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-16 11:50:30,180 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-11-16 11:50:30,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:50:30,181 INFO L85 PathProgramCache]: Analyzing trace with hash -1936160917, now seen corresponding path program 1 times [2022-11-16 11:50:30,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:50:30,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161079567] [2022-11-16 11:50:30,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:50:30,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:50:30,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:50:30,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:50:30,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:50:30,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161079567] [2022-11-16 11:50:30,245 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161079567] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:50:30,245 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:50:30,245 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:50:30,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520932896] [2022-11-16 11:50:30,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:50:30,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:50:30,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:50:30,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:50:30,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:50:30,249 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 315 [2022-11-16 11:50:30,250 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 434 places, 390 transitions, 1880 flow. Second operand has 4 states, 4 states have (on average 276.75) internal successors, (1107), 4 states have internal predecessors, (1107), 0 states have call successors, (0), 0 states 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 11:50:30,250 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:50:30,250 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 315 [2022-11-16 11:50:30,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:50:32,742 INFO L130 PetriNetUnfolder]: 351/6678 cut-off events. [2022-11-16 11:50:32,742 INFO L131 PetriNetUnfolder]: For 4915/4915 co-relation queries the response was YES. [2022-11-16 11:50:32,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11815 conditions, 6678 events. 351/6678 cut-off events. For 4915/4915 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 63382 event pairs, 84 based on Foata normal form. 24/5905 useless extension candidates. Maximal degree in co-relation 11442. Up to 290 conditions per place. [2022-11-16 11:50:33,039 INFO L137 encePairwiseOnDemand]: 308/315 looper letters, 37 selfloop transitions, 7 changer transitions 0/403 dead transitions. [2022-11-16 11:50:33,039 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 436 places, 403 transitions, 2007 flow [2022-11-16 11:50:33,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:50:33,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 11:50:33,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1140 transitions. [2022-11-16 11:50:33,041 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9047619047619048 [2022-11-16 11:50:33,041 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1140 transitions. [2022-11-16 11:50:33,042 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1140 transitions. [2022-11-16 11:50:33,042 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:50:33,042 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1140 transitions. [2022-11-16 11:50:33,044 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 285.0) internal successors, (1140), 4 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states 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 11:50:33,046 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 315.0) internal successors, (1575), 5 states have internal predecessors, (1575), 0 states have call successors, (0), 0 states 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 11:50:33,046 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 315.0) internal successors, (1575), 5 states have internal predecessors, (1575), 0 states have call successors, (0), 0 states 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 11:50:33,047 INFO L175 Difference]: Start difference. First operand has 434 places, 390 transitions, 1880 flow. Second operand 4 states and 1140 transitions. [2022-11-16 11:50:33,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 436 places, 403 transitions, 2007 flow [2022-11-16 11:50:33,085 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 435 places, 403 transitions, 1979 flow, removed 13 selfloop flow, removed 1 redundant places. [2022-11-16 11:50:33,091 INFO L231 Difference]: Finished difference. Result has 438 places, 393 transitions, 1908 flow [2022-11-16 11:50:33,091 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=1842, PETRI_DIFFERENCE_MINUEND_PLACES=432, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=388, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=381, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1908, PETRI_PLACES=438, PETRI_TRANSITIONS=393} [2022-11-16 11:50:33,092 INFO L288 CegarLoopForPetriNet]: 280 programPoint places, 158 predicate places. [2022-11-16 11:50:33,092 INFO L495 AbstractCegarLoop]: Abstraction has has 438 places, 393 transitions, 1908 flow [2022-11-16 11:50:33,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 276.75) internal successors, (1107), 4 states have internal predecessors, (1107), 0 states have call successors, (0), 0 states 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 11:50:33,093 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:50:33,093 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:50:33,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-16 11:50:33,093 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-11-16 11:50:33,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:50:33,094 INFO L85 PathProgramCache]: Analyzing trace with hash 1407132334, now seen corresponding path program 1 times [2022-11-16 11:50:33,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:50:33,094 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399764015] [2022-11-16 11:50:33,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:50:33,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:50:33,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:50:33,179 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 11:50:33,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:50:33,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399764015] [2022-11-16 11:50:33,180 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399764015] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:50:33,180 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:50:33,180 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:50:33,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104062948] [2022-11-16 11:50:33,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:50:33,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:50:33,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:50:33,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:50:33,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:50:33,184 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 270 out of 315 [2022-11-16 11:50:33,186 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 438 places, 393 transitions, 1908 flow. Second operand has 6 states, 6 states have (on average 272.1666666666667) internal successors, (1633), 6 states have internal predecessors, (1633), 0 states have call successors, (0), 0 states 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 11:50:33,186 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:50:33,186 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 270 of 315 [2022-11-16 11:50:33,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:50:36,145 INFO L130 PetriNetUnfolder]: 308/4710 cut-off events. [2022-11-16 11:50:36,145 INFO L131 PetriNetUnfolder]: For 4491/4491 co-relation queries the response was YES. [2022-11-16 11:50:36,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10067 conditions, 4710 events. 308/4710 cut-off events. For 4491/4491 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 40211 event pairs, 1 based on Foata normal form. 2/4379 useless extension candidates. Maximal degree in co-relation 9458. Up to 291 conditions per place. [2022-11-16 11:50:36,505 INFO L137 encePairwiseOnDemand]: 306/315 looper letters, 79 selfloop transitions, 22 changer transitions 0/442 dead transitions. [2022-11-16 11:50:36,506 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 445 places, 442 transitions, 2346 flow [2022-11-16 11:50:36,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 11:50:36,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-16 11:50:36,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2230 transitions. [2022-11-16 11:50:36,512 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8849206349206349 [2022-11-16 11:50:36,512 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2230 transitions. [2022-11-16 11:50:36,512 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2230 transitions. [2022-11-16 11:50:36,513 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:50:36,513 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2230 transitions. [2022-11-16 11:50:36,517 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 278.75) internal successors, (2230), 8 states have internal predecessors, (2230), 0 states have call successors, (0), 0 states 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 11:50:36,520 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 315.0) internal successors, (2835), 9 states have internal predecessors, (2835), 0 states have call successors, (0), 0 states 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 11:50:36,520 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 315.0) internal successors, (2835), 9 states have internal predecessors, (2835), 0 states have call successors, (0), 0 states 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 11:50:36,521 INFO L175 Difference]: Start difference. First operand has 438 places, 393 transitions, 1908 flow. Second operand 8 states and 2230 transitions. [2022-11-16 11:50:36,521 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 445 places, 442 transitions, 2346 flow [2022-11-16 11:50:36,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 445 places, 442 transitions, 2346 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 11:50:36,567 INFO L231 Difference]: Finished difference. Result has 451 places, 409 transitions, 2144 flow [2022-11-16 11:50:36,568 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=1908, PETRI_DIFFERENCE_MINUEND_PLACES=438, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=393, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=373, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2144, PETRI_PLACES=451, PETRI_TRANSITIONS=409} [2022-11-16 11:50:36,568 INFO L288 CegarLoopForPetriNet]: 280 programPoint places, 171 predicate places. [2022-11-16 11:50:36,568 INFO L495 AbstractCegarLoop]: Abstraction has has 451 places, 409 transitions, 2144 flow [2022-11-16 11:50:36,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 272.1666666666667) internal successors, (1633), 6 states have internal predecessors, (1633), 0 states have call successors, (0), 0 states 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 11:50:36,569 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:50:36,569 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:50:36,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-16 11:50:36,569 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-11-16 11:50:36,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:50:36,570 INFO L85 PathProgramCache]: Analyzing trace with hash 578206890, now seen corresponding path program 1 times [2022-11-16 11:50:36,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:50:36,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696136432] [2022-11-16 11:50:36,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:50:36,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:50:36,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:50:36,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:50:36,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:50:36,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696136432] [2022-11-16 11:50:36,712 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696136432] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:50:36,713 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:50:36,713 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 11:50:36,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303632834] [2022-11-16 11:50:36,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:50:36,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 11:50:36,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:50:36,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 11:50:36,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:50:36,716 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 250 out of 315 [2022-11-16 11:50:36,718 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 451 places, 409 transitions, 2144 flow. Second operand has 8 states, 8 states have (on average 252.625) internal successors, (2021), 8 states have internal predecessors, (2021), 0 states have call successors, (0), 0 states 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 11:50:36,718 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:50:36,718 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 250 of 315 [2022-11-16 11:50:36,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:50:48,773 INFO L130 PetriNetUnfolder]: 5007/21126 cut-off events. [2022-11-16 11:50:48,773 INFO L131 PetriNetUnfolder]: For 20871/20887 co-relation queries the response was YES. [2022-11-16 11:50:49,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43108 conditions, 21126 events. 5007/21126 cut-off events. For 20871/20887 co-relation queries the response was YES. Maximal size of possible extension queue 3788. Compared 333107 event pairs, 34 based on Foata normal form. 0/15408 useless extension candidates. Maximal degree in co-relation 42936. Up to 4607 conditions per place. [2022-11-16 11:50:49,565 INFO L137 encePairwiseOnDemand]: 299/315 looper letters, 147 selfloop transitions, 41 changer transitions 0/523 dead transitions. [2022-11-16 11:50:49,565 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 468 places, 523 transitions, 3046 flow [2022-11-16 11:50:49,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-16 11:50:49,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-16 11:50:49,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 4659 transitions. [2022-11-16 11:50:49,570 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8216931216931217 [2022-11-16 11:50:49,571 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 4659 transitions. [2022-11-16 11:50:49,571 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 4659 transitions. [2022-11-16 11:50:49,572 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:50:49,572 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 4659 transitions. [2022-11-16 11:50:49,577 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 258.8333333333333) internal successors, (4659), 18 states have internal predecessors, (4659), 0 states have call successors, (0), 0 states 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 11:50:49,584 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 315.0) internal successors, (5985), 19 states have internal predecessors, (5985), 0 states have call successors, (0), 0 states 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 11:50:49,586 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 315.0) internal successors, (5985), 19 states have internal predecessors, (5985), 0 states have call successors, (0), 0 states 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 11:50:49,586 INFO L175 Difference]: Start difference. First operand has 451 places, 409 transitions, 2144 flow. Second operand 18 states and 4659 transitions. [2022-11-16 11:50:49,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 468 places, 523 transitions, 3046 flow [2022-11-16 11:50:49,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 466 places, 523 transitions, 3036 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-11-16 11:50:49,690 INFO L231 Difference]: Finished difference. Result has 473 places, 435 transitions, 2385 flow [2022-11-16 11:50:49,691 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=2134, PETRI_DIFFERENCE_MINUEND_PLACES=449, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=409, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=389, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=2385, PETRI_PLACES=473, PETRI_TRANSITIONS=435} [2022-11-16 11:50:49,692 INFO L288 CegarLoopForPetriNet]: 280 programPoint places, 193 predicate places. [2022-11-16 11:50:49,692 INFO L495 AbstractCegarLoop]: Abstraction has has 473 places, 435 transitions, 2385 flow [2022-11-16 11:50:49,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 252.625) internal successors, (2021), 8 states have internal predecessors, (2021), 0 states have call successors, (0), 0 states 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 11:50:49,693 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:50:49,693 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:50:49,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-16 11:50:49,693 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-11-16 11:50:49,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:50:49,694 INFO L85 PathProgramCache]: Analyzing trace with hash 744545343, now seen corresponding path program 1 times [2022-11-16 11:50:49,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:50:49,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691015421] [2022-11-16 11:50:49,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:50:49,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:50:49,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:50:49,874 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 11:50:49,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:50:49,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691015421] [2022-11-16 11:50:49,875 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691015421] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:50:49,875 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:50:49,875 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:50:49,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702451939] [2022-11-16 11:50:49,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:50:49,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:50:49,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:50:49,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:50:49,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:50:49,879 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 315 [2022-11-16 11:50:49,880 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 473 places, 435 transitions, 2385 flow. Second operand has 4 states, 4 states have (on average 277.0) internal successors, (1108), 4 states have internal predecessors, (1108), 0 states have call successors, (0), 0 states 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 11:50:49,880 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:50:49,881 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 315 [2022-11-16 11:50:49,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:51:06,963 INFO L130 PetriNetUnfolder]: 3551/26366 cut-off events. [2022-11-16 11:51:06,963 INFO L131 PetriNetUnfolder]: For 25746/25762 co-relation queries the response was YES. [2022-11-16 11:51:07,995 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52040 conditions, 26366 events. 3551/26366 cut-off events. For 25746/25762 co-relation queries the response was YES. Maximal size of possible extension queue 2444. Compared 427500 event pairs, 1428 based on Foata normal form. 216/21443 useless extension candidates. Maximal degree in co-relation 51862. Up to 3194 conditions per place. [2022-11-16 11:51:08,141 INFO L137 encePairwiseOnDemand]: 308/315 looper letters, 36 selfloop transitions, 7 changer transitions 0/447 dead transitions. [2022-11-16 11:51:08,141 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 475 places, 447 transitions, 2505 flow [2022-11-16 11:51:08,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:51:08,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 11:51:08,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1139 transitions. [2022-11-16 11:51:08,144 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.903968253968254 [2022-11-16 11:51:08,144 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1139 transitions. [2022-11-16 11:51:08,144 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1139 transitions. [2022-11-16 11:51:08,144 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:51:08,145 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1139 transitions. [2022-11-16 11:51:08,146 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 284.75) internal successors, (1139), 4 states have internal predecessors, (1139), 0 states have call successors, (0), 0 states 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 11:51:08,147 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 315.0) internal successors, (1575), 5 states have internal predecessors, (1575), 0 states have call successors, (0), 0 states 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 11:51:08,147 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 315.0) internal successors, (1575), 5 states have internal predecessors, (1575), 0 states have call successors, (0), 0 states 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 11:51:08,148 INFO L175 Difference]: Start difference. First operand has 473 places, 435 transitions, 2385 flow. Second operand 4 states and 1139 transitions. [2022-11-16 11:51:08,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 475 places, 447 transitions, 2505 flow [2022-11-16 11:51:08,438 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 474 places, 447 transitions, 2485 flow, removed 9 selfloop flow, removed 1 redundant places. [2022-11-16 11:51:08,446 INFO L231 Difference]: Finished difference. Result has 477 places, 438 transitions, 2421 flow [2022-11-16 11:51:08,446 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=2355, PETRI_DIFFERENCE_MINUEND_PLACES=471, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=433, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=426, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2421, PETRI_PLACES=477, PETRI_TRANSITIONS=438} [2022-11-16 11:51:08,447 INFO L288 CegarLoopForPetriNet]: 280 programPoint places, 197 predicate places. [2022-11-16 11:51:08,447 INFO L495 AbstractCegarLoop]: Abstraction has has 477 places, 438 transitions, 2421 flow [2022-11-16 11:51:08,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 277.0) internal successors, (1108), 4 states have internal predecessors, (1108), 0 states have call successors, (0), 0 states 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 11:51:08,448 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:51:08,448 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:51:08,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-16 11:51:08,449 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-11-16 11:51:08,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:51:08,449 INFO L85 PathProgramCache]: Analyzing trace with hash 585474242, now seen corresponding path program 1 times [2022-11-16 11:51:08,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:51:08,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613091330] [2022-11-16 11:51:08,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:51:08,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:51:08,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:51:08,543 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 11:51:08,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:51:08,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613091330] [2022-11-16 11:51:08,544 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613091330] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:51:08,544 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:51:08,544 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:51:08,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885549808] [2022-11-16 11:51:08,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:51:08,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:51:08,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:51:08,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:51:08,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:51:08,548 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 270 out of 315 [2022-11-16 11:51:08,550 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 477 places, 438 transitions, 2421 flow. Second operand has 6 states, 6 states have (on average 272.3333333333333) internal successors, (1634), 6 states have internal predecessors, (1634), 0 states have call successors, (0), 0 states 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 11:51:08,550 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:51:08,550 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 270 of 315 [2022-11-16 11:51:08,550 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand