./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/chl-match-trans.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 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_664d2bdc-0172-48f9-afac-7c7350a726b6/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_664d2bdc-0172-48f9-afac-7c7350a726b6/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_664d2bdc-0172-48f9-afac-7c7350a726b6/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_664d2bdc-0172-48f9-afac-7c7350a726b6/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-match-trans.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_664d2bdc-0172-48f9-afac-7c7350a726b6/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_664d2bdc-0172-48f9-afac-7c7350a726b6/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 4221a6bcee4165c3049aa9b16a70613c9e290b9c0a4ff35026a6f2dcff16f9ff --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 11:23:45,925 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 11:23:45,928 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 11:23:45,973 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 11:23:45,973 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 11:23:45,978 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 11:23:45,980 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 11:23:45,984 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 11:23:45,987 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 11:23:45,993 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 11:23:45,995 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 11:23:45,996 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 11:23:45,998 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 11:23:46,000 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 11:23:46,002 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 11:23:46,004 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 11:23:46,006 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 11:23:46,007 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 11:23:46,009 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 11:23:46,017 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 11:23:46,019 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 11:23:46,021 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 11:23:46,024 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 11:23:46,025 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 11:23:46,035 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 11:23:46,036 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 11:23:46,037 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 11:23:46,038 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 11:23:46,039 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 11:23:46,040 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 11:23:46,041 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 11:23:46,042 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 11:23:46,044 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 11:23:46,045 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 11:23:46,049 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 11:23:46,049 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 11:23:46,050 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 11:23:46,051 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 11:23:46,051 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 11:23:46,052 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 11:23:46,053 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 11:23:46,054 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_664d2bdc-0172-48f9-afac-7c7350a726b6/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-16 11:23:46,113 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 11:23:46,113 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 11:23:46,114 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 11:23:46,114 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 11:23:46,115 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 11:23:46,115 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 11:23:46,116 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 11:23:46,116 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 11:23:46,116 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 11:23:46,117 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 11:23:46,117 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 11:23:46,117 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 11:23:46,117 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 11:23:46,118 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 11:23:46,118 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 11:23:46,118 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 11:23:46,123 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 11:23:46,123 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 11:23:46,123 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-16 11:23:46,124 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 11:23:46,124 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 11:23:46,124 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 11:23:46,125 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 11:23:46,126 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 11:23:46,126 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 11:23:46,126 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 11:23:46,127 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:23:46,127 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 11:23:46,128 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 11:23:46,128 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 11:23:46,129 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 11:23:46,129 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 11:23:46,129 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 11:23:46,130 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 11:23:46,130 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 11:23:46,131 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_664d2bdc-0172-48f9-afac-7c7350a726b6/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_664d2bdc-0172-48f9-afac-7c7350a726b6/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4221a6bcee4165c3049aa9b16a70613c9e290b9c0a4ff35026a6f2dcff16f9ff [2022-11-16 11:23:46,458 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 11:23:46,492 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 11:23:46,495 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 11:23:46,496 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 11:23:46,499 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 11:23:46,500 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_664d2bdc-0172-48f9-afac-7c7350a726b6/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/weaver/chl-match-trans.wvr.c [2022-11-16 11:23:46,590 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_664d2bdc-0172-48f9-afac-7c7350a726b6/bin/uautomizer-tPACEb0tL8/data/9003b280c/00cd3fba27374f2e9b7c4c7cef190e78/FLAG04ac7a9c1 [2022-11-16 11:23:47,153 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 11:23:47,153 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_664d2bdc-0172-48f9-afac-7c7350a726b6/sv-benchmarks/c/weaver/chl-match-trans.wvr.c [2022-11-16 11:23:47,161 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_664d2bdc-0172-48f9-afac-7c7350a726b6/bin/uautomizer-tPACEb0tL8/data/9003b280c/00cd3fba27374f2e9b7c4c7cef190e78/FLAG04ac7a9c1 [2022-11-16 11:23:47,534 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_664d2bdc-0172-48f9-afac-7c7350a726b6/bin/uautomizer-tPACEb0tL8/data/9003b280c/00cd3fba27374f2e9b7c4c7cef190e78 [2022-11-16 11:23:47,537 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 11:23:47,541 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 11:23:47,544 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 11:23:47,545 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 11:23:47,549 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 11:23:47,550 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:23:47" (1/1) ... [2022-11-16 11:23:47,552 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@762c1882 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:23:47, skipping insertion in model container [2022-11-16 11:23:47,552 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:23:47" (1/1) ... [2022-11-16 11:23:47,562 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 11:23:47,592 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:23:47,906 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_664d2bdc-0172-48f9-afac-7c7350a726b6/sv-benchmarks/c/weaver/chl-match-trans.wvr.c[2954,2967] [2022-11-16 11:23:47,911 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:23:47,920 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 11:23:47,948 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_664d2bdc-0172-48f9-afac-7c7350a726b6/sv-benchmarks/c/weaver/chl-match-trans.wvr.c[2954,2967] [2022-11-16 11:23:47,951 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:23:47,966 INFO L208 MainTranslator]: Completed translation [2022-11-16 11:23:47,967 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:23:47 WrapperNode [2022-11-16 11:23:47,967 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 11:23:47,968 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 11:23:47,968 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 11:23:47,968 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 11:23:47,977 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:23:47" (1/1) ... [2022-11-16 11:23:47,986 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:23:47" (1/1) ... [2022-11-16 11:23:48,029 INFO L138 Inliner]: procedures = 23, calls = 33, calls flagged for inlining = 11, calls inlined = 21, statements flattened = 286 [2022-11-16 11:23:48,029 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 11:23:48,030 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 11:23:48,030 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 11:23:48,031 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 11:23:48,044 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:23:47" (1/1) ... [2022-11-16 11:23:48,044 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:23:47" (1/1) ... [2022-11-16 11:23:48,048 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:23:47" (1/1) ... [2022-11-16 11:23:48,048 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:23:47" (1/1) ... [2022-11-16 11:23:48,056 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:23:47" (1/1) ... [2022-11-16 11:23:48,059 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:23:47" (1/1) ... [2022-11-16 11:23:48,076 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:23:47" (1/1) ... [2022-11-16 11:23:48,078 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:23:47" (1/1) ... [2022-11-16 11:23:48,082 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 11:23:48,083 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 11:23:48,084 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 11:23:48,084 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 11:23:48,095 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:23:47" (1/1) ... [2022-11-16 11:23:48,101 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:23:48,112 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_664d2bdc-0172-48f9-afac-7c7350a726b6/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:23:48,133 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_664d2bdc-0172-48f9-afac-7c7350a726b6/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 11:23:48,159 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_664d2bdc-0172-48f9-afac-7c7350a726b6/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 11:23:48,182 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 11:23:48,183 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-16 11:23:48,183 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-16 11:23:48,183 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-16 11:23:48,183 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-16 11:23:48,184 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-16 11:23:48,184 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-16 11:23:48,184 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 11:23:48,184 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 11:23:48,185 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 11:23:48,185 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 11:23:48,185 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 11:23:48,185 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 11:23:48,185 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 11:23:48,187 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 11:23:48,321 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 11:23:48,324 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 11:23:48,968 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 11:23:48,985 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 11:23:48,986 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-16 11:23:48,989 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:23:48 BoogieIcfgContainer [2022-11-16 11:23:48,989 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 11:23:48,992 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 11:23:48,992 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 11:23:48,996 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 11:23:48,997 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:23:47" (1/3) ... [2022-11-16 11:23:48,998 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b8d64ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:23:48, skipping insertion in model container [2022-11-16 11:23:48,998 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:23:47" (2/3) ... [2022-11-16 11:23:48,998 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b8d64ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:23:48, skipping insertion in model container [2022-11-16 11:23:48,999 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:23:48" (3/3) ... [2022-11-16 11:23:49,000 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-match-trans.wvr.c [2022-11-16 11:23:49,010 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 11:23:49,023 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 11:23:49,023 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 36 error locations. [2022-11-16 11:23:49,023 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 11:23:49,284 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-16 11:23:49,369 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 397 places, 412 transitions, 848 flow [2022-11-16 11:23:49,643 INFO L130 PetriNetUnfolder]: 25/409 cut-off events. [2022-11-16 11:23:49,643 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-16 11:23:49,657 INFO L83 FinitePrefix]: Finished finitePrefix Result has 422 conditions, 409 events. 25/409 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 948 event pairs, 0 based on Foata normal form. 0/348 useless extension candidates. Maximal degree in co-relation 328. Up to 2 conditions per place. [2022-11-16 11:23:49,658 INFO L82 GeneralOperation]: Start removeDead. Operand has 397 places, 412 transitions, 848 flow [2022-11-16 11:23:49,672 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 374 places, 388 transitions, 791 flow [2022-11-16 11:23:49,691 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:23:49,698 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;@a8c3c13, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:23:49,698 INFO L358 AbstractCegarLoop]: Starting to check reachability of 75 error locations. [2022-11-16 11:23:49,716 INFO L130 PetriNetUnfolder]: 0/77 cut-off events. [2022-11-16 11:23:49,720 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 11:23:49,721 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:23:49,721 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:23:49,722 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-16 11:23:49,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:23:49,728 INFO L85 PathProgramCache]: Analyzing trace with hash 342507580, now seen corresponding path program 1 times [2022-11-16 11:23:49,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:23:49,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465697697] [2022-11-16 11:23:49,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:23:49,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:23:49,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:23:50,440 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 11:23:50,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:23:50,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465697697] [2022-11-16 11:23:50,442 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465697697] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:23:50,443 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:23:50,443 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:23:50,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381254666] [2022-11-16 11:23:50,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:23:50,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:23:50,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:23:50,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:23:50,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:23:50,518 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 346 out of 412 [2022-11-16 11:23:50,528 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 374 places, 388 transitions, 791 flow. Second operand has 6 states, 6 states have (on average 347.8333333333333) internal successors, (2087), 6 states have internal predecessors, (2087), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:23:50,528 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:23:50,529 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 346 of 412 [2022-11-16 11:23:50,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:23:51,205 INFO L130 PetriNetUnfolder]: 147/895 cut-off events. [2022-11-16 11:23:51,205 INFO L131 PetriNetUnfolder]: For 109/109 co-relation queries the response was YES. [2022-11-16 11:23:51,217 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1398 conditions, 895 events. 147/895 cut-off events. For 109/109 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 5074 event pairs, 41 based on Foata normal form. 474/1239 useless extension candidates. Maximal degree in co-relation 1279. Up to 113 conditions per place. [2022-11-16 11:23:51,232 INFO L137 encePairwiseOnDemand]: 390/412 looper letters, 57 selfloop transitions, 9 changer transitions 0/391 dead transitions. [2022-11-16 11:23:51,232 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 379 places, 391 transitions, 953 flow [2022-11-16 11:23:51,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 11:23:51,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 11:23:51,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2526 transitions. [2022-11-16 11:23:51,257 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.875866851595007 [2022-11-16 11:23:51,258 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2526 transitions. [2022-11-16 11:23:51,259 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2526 transitions. [2022-11-16 11:23:51,265 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:23:51,268 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2526 transitions. [2022-11-16 11:23:51,278 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 360.85714285714283) internal successors, (2526), 7 states have internal predecessors, (2526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:23:51,290 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 412.0) internal successors, (3296), 8 states have internal predecessors, (3296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:23:51,292 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 412.0) internal successors, (3296), 8 states have internal predecessors, (3296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:23:51,294 INFO L175 Difference]: Start difference. First operand has 374 places, 388 transitions, 791 flow. Second operand 7 states and 2526 transitions. [2022-11-16 11:23:51,295 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 379 places, 391 transitions, 953 flow [2022-11-16 11:23:51,301 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 374 places, 391 transitions, 931 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-16 11:23:51,309 INFO L231 Difference]: Finished difference. Result has 374 places, 375 transitions, 774 flow [2022-11-16 11:23:51,312 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=756, PETRI_DIFFERENCE_MINUEND_PLACES=368, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=375, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=366, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=774, PETRI_PLACES=374, PETRI_TRANSITIONS=375} [2022-11-16 11:23:51,315 INFO L288 CegarLoopForPetriNet]: 374 programPoint places, 0 predicate places. [2022-11-16 11:23:51,316 INFO L495 AbstractCegarLoop]: Abstraction has has 374 places, 375 transitions, 774 flow [2022-11-16 11:23:51,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 347.8333333333333) internal successors, (2087), 6 states have internal predecessors, (2087), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:23:51,317 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:23:51,318 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:23:51,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 11:23:51,318 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-16 11:23:51,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:23:51,319 INFO L85 PathProgramCache]: Analyzing trace with hash 2027801358, now seen corresponding path program 1 times [2022-11-16 11:23:51,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:23:51,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249682701] [2022-11-16 11:23:51,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:23:51,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:23:51,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:23:51,438 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 11:23:51,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:23:51,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249682701] [2022-11-16 11:23:51,438 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249682701] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:23:51,439 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:23:51,439 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:23:51,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089784563] [2022-11-16 11:23:51,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:23:51,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:23:51,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:23:51,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:23:51,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:23:51,466 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 346 out of 412 [2022-11-16 11:23:51,468 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 374 places, 375 transitions, 774 flow. Second operand has 4 states, 4 states have (on average 347.75) internal successors, (1391), 4 states have internal predecessors, (1391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:23:51,474 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:23:51,474 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 346 of 412 [2022-11-16 11:23:51,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:23:52,028 INFO L130 PetriNetUnfolder]: 146/961 cut-off events. [2022-11-16 11:23:52,028 INFO L131 PetriNetUnfolder]: For 21/21 co-relation queries the response was YES. [2022-11-16 11:23:52,043 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1515 conditions, 961 events. 146/961 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 6031 event pairs, 60 based on Foata normal form. 6/838 useless extension candidates. Maximal degree in co-relation 887. Up to 164 conditions per place. [2022-11-16 11:23:52,100 INFO L137 encePairwiseOnDemand]: 399/412 looper letters, 64 selfloop transitions, 9 changer transitions 0/398 dead transitions. [2022-11-16 11:23:52,100 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 398 transitions, 974 flow [2022-11-16 11:23:52,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:23:52,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 11:23:52,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1461 transitions. [2022-11-16 11:23:52,104 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8865291262135923 [2022-11-16 11:23:52,104 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1461 transitions. [2022-11-16 11:23:52,104 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1461 transitions. [2022-11-16 11:23:52,105 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:23:52,106 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1461 transitions. [2022-11-16 11:23:52,109 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 365.25) internal successors, (1461), 4 states have internal predecessors, (1461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:23:52,113 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 412.0) internal successors, (2060), 5 states have internal predecessors, (2060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:23:52,115 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 412.0) internal successors, (2060), 5 states have internal predecessors, (2060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:23:52,116 INFO L175 Difference]: Start difference. First operand has 374 places, 375 transitions, 774 flow. Second operand 4 states and 1461 transitions. [2022-11-16 11:23:52,117 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 398 transitions, 974 flow [2022-11-16 11:23:52,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 369 places, 398 transitions, 956 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-16 11:23:52,127 INFO L231 Difference]: Finished difference. Result has 372 places, 378 transitions, 812 flow [2022-11-16 11:23:52,128 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=752, PETRI_DIFFERENCE_MINUEND_PLACES=366, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=373, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=364, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=812, PETRI_PLACES=372, PETRI_TRANSITIONS=378} [2022-11-16 11:23:52,129 INFO L288 CegarLoopForPetriNet]: 374 programPoint places, -2 predicate places. [2022-11-16 11:23:52,129 INFO L495 AbstractCegarLoop]: Abstraction has has 372 places, 378 transitions, 812 flow [2022-11-16 11:23:52,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 347.75) internal successors, (1391), 4 states have internal predecessors, (1391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:23:52,132 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:23:52,132 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 11:23:52,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 11:23:52,132 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-16 11:23:52,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:23:52,136 INFO L85 PathProgramCache]: Analyzing trace with hash 2138789822, now seen corresponding path program 1 times [2022-11-16 11:23:52,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:23:52,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226452223] [2022-11-16 11:23:52,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:23:52,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:23:52,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:23:52,349 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 11:23:52,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:23:52,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226452223] [2022-11-16 11:23:52,350 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226452223] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:23:52,350 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:23:52,350 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:23:52,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703497160] [2022-11-16 11:23:52,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:23:52,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:23:52,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:23:52,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:23:52,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:23:52,356 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 346 out of 412 [2022-11-16 11:23:52,359 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 372 places, 378 transitions, 812 flow. Second operand has 6 states, 6 states have (on average 348.0) internal successors, (2088), 6 states have internal predecessors, (2088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:23:52,359 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:23:52,360 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 346 of 412 [2022-11-16 11:23:52,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:23:53,427 INFO L130 PetriNetUnfolder]: 437/2488 cut-off events. [2022-11-16 11:23:53,428 INFO L131 PetriNetUnfolder]: For 99/213 co-relation queries the response was YES. [2022-11-16 11:23:53,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3534 conditions, 2488 events. 437/2488 cut-off events. For 99/213 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 22821 event pairs, 39 based on Foata normal form. 3/1958 useless extension candidates. Maximal degree in co-relation 1792. Up to 271 conditions per place. [2022-11-16 11:23:53,501 INFO L137 encePairwiseOnDemand]: 402/412 looper letters, 56 selfloop transitions, 9 changer transitions 0/392 dead transitions. [2022-11-16 11:23:53,501 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 377 places, 392 transitions, 980 flow [2022-11-16 11:23:53,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 11:23:53,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 11:23:53,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2488 transitions. [2022-11-16 11:23:53,508 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8626907073509015 [2022-11-16 11:23:53,510 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2488 transitions. [2022-11-16 11:23:53,510 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2488 transitions. [2022-11-16 11:23:53,512 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:23:53,513 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2488 transitions. [2022-11-16 11:23:53,519 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 355.42857142857144) internal successors, (2488), 7 states have internal predecessors, (2488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:23:53,525 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 412.0) internal successors, (3296), 8 states have internal predecessors, (3296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:23:53,528 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 412.0) internal successors, (3296), 8 states have internal predecessors, (3296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:23:53,528 INFO L175 Difference]: Start difference. First operand has 372 places, 378 transitions, 812 flow. Second operand 7 states and 2488 transitions. [2022-11-16 11:23:53,528 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 377 places, 392 transitions, 980 flow [2022-11-16 11:23:53,532 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 377 places, 392 transitions, 980 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 11:23:53,538 INFO L231 Difference]: Finished difference. Result has 377 places, 377 transitions, 828 flow [2022-11-16 11:23:53,539 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=810, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=377, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=368, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=828, PETRI_PLACES=377, PETRI_TRANSITIONS=377} [2022-11-16 11:23:53,542 INFO L288 CegarLoopForPetriNet]: 374 programPoint places, 3 predicate places. [2022-11-16 11:23:53,542 INFO L495 AbstractCegarLoop]: Abstraction has has 377 places, 377 transitions, 828 flow [2022-11-16 11:23:53,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 348.0) internal successors, (2088), 6 states have internal predecessors, (2088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:23:53,544 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:23:53,544 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:23:53,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 11:23:53,545 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-16 11:23:53,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:23:53,546 INFO L85 PathProgramCache]: Analyzing trace with hash 1877976115, now seen corresponding path program 1 times [2022-11-16 11:23:53,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:23:53,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403250744] [2022-11-16 11:23:53,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:23:53,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:23:53,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:23:53,708 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 11:23:53,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:23:53,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403250744] [2022-11-16 11:23:53,709 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403250744] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:23:53,710 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:23:53,710 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:23:53,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675378701] [2022-11-16 11:23:53,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:23:53,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:23:53,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:23:53,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:23:53,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:23:53,723 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 346 out of 412 [2022-11-16 11:23:53,725 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 377 transitions, 828 flow. Second operand has 4 states, 4 states have (on average 348.0) internal successors, (1392), 4 states have internal predecessors, (1392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:23:53,725 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:23:53,725 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 346 of 412 [2022-11-16 11:23:53,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:23:54,616 INFO L130 PetriNetUnfolder]: 214/1279 cut-off events. [2022-11-16 11:23:54,616 INFO L131 PetriNetUnfolder]: For 161/285 co-relation queries the response was YES. [2022-11-16 11:23:54,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1936 conditions, 1279 events. 214/1279 cut-off events. For 161/285 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 10030 event pairs, 44 based on Foata normal form. 8/1020 useless extension candidates. Maximal degree in co-relation 1344. Up to 228 conditions per place. [2022-11-16 11:23:54,661 INFO L137 encePairwiseOnDemand]: 399/412 looper letters, 63 selfloop transitions, 9 changer transitions 0/399 dead transitions. [2022-11-16 11:23:54,662 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 378 places, 399 transitions, 1023 flow [2022-11-16 11:23:54,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:23:54,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 11:23:54,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1460 transitions. [2022-11-16 11:23:54,666 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8859223300970874 [2022-11-16 11:23:54,666 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1460 transitions. [2022-11-16 11:23:54,667 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1460 transitions. [2022-11-16 11:23:54,669 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:23:54,673 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1460 transitions. [2022-11-16 11:23:54,676 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 365.0) internal successors, (1460), 4 states have internal predecessors, (1460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:23:54,681 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 412.0) internal successors, (2060), 5 states have internal predecessors, (2060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:23:54,682 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 412.0) internal successors, (2060), 5 states have internal predecessors, (2060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:23:54,683 INFO L175 Difference]: Start difference. First operand has 377 places, 377 transitions, 828 flow. Second operand 4 states and 1460 transitions. [2022-11-16 11:23:54,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 378 places, 399 transitions, 1023 flow [2022-11-16 11:23:54,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 372 places, 399 transitions, 1005 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-16 11:23:54,696 INFO L231 Difference]: Finished difference. Result has 375 places, 380 transitions, 866 flow [2022-11-16 11:23:54,698 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=806, PETRI_DIFFERENCE_MINUEND_PLACES=369, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=375, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=366, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=866, PETRI_PLACES=375, PETRI_TRANSITIONS=380} [2022-11-16 11:23:54,700 INFO L288 CegarLoopForPetriNet]: 374 programPoint places, 1 predicate places. [2022-11-16 11:23:54,700 INFO L495 AbstractCegarLoop]: Abstraction has has 375 places, 380 transitions, 866 flow [2022-11-16 11:23:54,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 348.0) internal successors, (1392), 4 states have internal predecessors, (1392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:23:54,701 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:23:54,702 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:23:54,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 11:23:54,702 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-16 11:23:54,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:23:54,703 INFO L85 PathProgramCache]: Analyzing trace with hash -820186251, now seen corresponding path program 1 times [2022-11-16 11:23:54,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:23:54,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963478948] [2022-11-16 11:23:54,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:23:54,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:23:54,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:23:54,819 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 11:23:54,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:23:54,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963478948] [2022-11-16 11:23:54,820 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963478948] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:23:54,820 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:23:54,820 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:23:54,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252321088] [2022-11-16 11:23:54,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:23:54,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:23:54,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:23:54,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:23:54,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:23:54,825 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 346 out of 412 [2022-11-16 11:23:54,827 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 375 places, 380 transitions, 866 flow. Second operand has 4 states, 4 states have (on average 348.25) internal successors, (1393), 4 states have internal predecessors, (1393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:23:54,827 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:23:54,827 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 346 of 412 [2022-11-16 11:23:54,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:23:55,344 INFO L130 PetriNetUnfolder]: 132/944 cut-off events. [2022-11-16 11:23:55,345 INFO L131 PetriNetUnfolder]: For 85/85 co-relation queries the response was YES. [2022-11-16 11:23:55,361 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1518 conditions, 944 events. 132/944 cut-off events. For 85/85 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 5921 event pairs, 48 based on Foata normal form. 6/834 useless extension candidates. Maximal degree in co-relation 1350. Up to 130 conditions per place. [2022-11-16 11:23:55,374 INFO L137 encePairwiseOnDemand]: 403/412 looper letters, 64 selfloop transitions, 7 changer transitions 0/398 dead transitions. [2022-11-16 11:23:55,374 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 378 places, 398 transitions, 1044 flow [2022-11-16 11:23:55,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:23:55,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 11:23:55,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1457 transitions. [2022-11-16 11:23:55,378 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8841019417475728 [2022-11-16 11:23:55,378 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1457 transitions. [2022-11-16 11:23:55,378 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1457 transitions. [2022-11-16 11:23:55,380 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:23:55,380 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1457 transitions. [2022-11-16 11:23:55,383 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 364.25) internal successors, (1457), 4 states have internal predecessors, (1457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:23:55,387 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 412.0) internal successors, (2060), 5 states have internal predecessors, (2060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:23:55,388 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 412.0) internal successors, (2060), 5 states have internal predecessors, (2060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:23:55,388 INFO L175 Difference]: Start difference. First operand has 375 places, 380 transitions, 866 flow. Second operand 4 states and 1457 transitions. [2022-11-16 11:23:55,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 378 places, 398 transitions, 1044 flow [2022-11-16 11:23:55,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 377 places, 398 transitions, 1039 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:23:55,397 INFO L231 Difference]: Finished difference. Result has 377 places, 378 transitions, 863 flow [2022-11-16 11:23:55,398 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=849, PETRI_DIFFERENCE_MINUEND_PLACES=374, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=378, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=371, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=863, PETRI_PLACES=377, PETRI_TRANSITIONS=378} [2022-11-16 11:23:55,399 INFO L288 CegarLoopForPetriNet]: 374 programPoint places, 3 predicate places. [2022-11-16 11:23:55,400 INFO L495 AbstractCegarLoop]: Abstraction has has 377 places, 378 transitions, 863 flow [2022-11-16 11:23:55,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 348.25) internal successors, (1393), 4 states have internal predecessors, (1393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:23:55,401 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:23:55,401 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:23:55,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 11:23:55,401 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-16 11:23:55,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:23:55,402 INFO L85 PathProgramCache]: Analyzing trace with hash 344030982, now seen corresponding path program 1 times [2022-11-16 11:23:55,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:23:55,403 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288928434] [2022-11-16 11:23:55,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:23:55,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:23:55,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:23:55,498 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 11:23:55,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:23:55,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288928434] [2022-11-16 11:23:55,499 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288928434] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:23:55,500 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:23:55,500 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:23:55,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425368854] [2022-11-16 11:23:55,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:23:55,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:23:55,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:23:55,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:23:55,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:23:55,504 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 346 out of 412 [2022-11-16 11:23:55,507 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 378 transitions, 863 flow. Second operand has 6 states, 6 states have (on average 348.1666666666667) internal successors, (2089), 6 states have internal predecessors, (2089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:23:55,507 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:23:55,507 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 346 of 412 [2022-11-16 11:23:55,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:23:56,214 INFO L130 PetriNetUnfolder]: 185/1621 cut-off events. [2022-11-16 11:23:56,215 INFO L131 PetriNetUnfolder]: For 86/86 co-relation queries the response was YES. [2022-11-16 11:23:56,247 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2292 conditions, 1621 events. 185/1621 cut-off events. For 86/86 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 11504 event pairs, 49 based on Foata normal form. 0/1400 useless extension candidates. Maximal degree in co-relation 1956. Up to 180 conditions per place. [2022-11-16 11:23:56,271 INFO L137 encePairwiseOnDemand]: 402/412 looper letters, 47 selfloop transitions, 10 changer transitions 0/386 dead transitions. [2022-11-16 11:23:56,271 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 382 places, 386 transitions, 1002 flow [2022-11-16 11:23:56,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 11:23:56,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 11:23:56,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2479 transitions. [2022-11-16 11:23:56,277 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8595700416088765 [2022-11-16 11:23:56,278 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2479 transitions. [2022-11-16 11:23:56,278 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2479 transitions. [2022-11-16 11:23:56,280 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:23:56,280 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2479 transitions. [2022-11-16 11:23:56,285 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 354.14285714285717) internal successors, (2479), 7 states have internal predecessors, (2479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:23:56,291 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 412.0) internal successors, (3296), 8 states have internal predecessors, (3296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:23:56,293 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 412.0) internal successors, (3296), 8 states have internal predecessors, (3296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:23:56,293 INFO L175 Difference]: Start difference. First operand has 377 places, 378 transitions, 863 flow. Second operand 7 states and 2479 transitions. [2022-11-16 11:23:56,293 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 382 places, 386 transitions, 1002 flow [2022-11-16 11:23:56,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 380 places, 386 transitions, 991 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 11:23:56,302 INFO L231 Difference]: Finished difference. Result has 380 places, 377 transitions, 870 flow [2022-11-16 11:23:56,303 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=850, PETRI_DIFFERENCE_MINUEND_PLACES=374, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=377, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=367, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=870, PETRI_PLACES=380, PETRI_TRANSITIONS=377} [2022-11-16 11:23:56,304 INFO L288 CegarLoopForPetriNet]: 374 programPoint places, 6 predicate places. [2022-11-16 11:23:56,305 INFO L495 AbstractCegarLoop]: Abstraction has has 380 places, 377 transitions, 870 flow [2022-11-16 11:23:56,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 348.1666666666667) internal successors, (2089), 6 states have internal predecessors, (2089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:23:56,306 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:23:56,306 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 11:23:56,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 11:23:56,307 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-16 11:23:56,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:23:56,307 INFO L85 PathProgramCache]: Analyzing trace with hash 776651785, now seen corresponding path program 1 times [2022-11-16 11:23:56,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:23:56,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593219848] [2022-11-16 11:23:56,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:23:56,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:23:56,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:23:56,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:23:56,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:23:56,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593219848] [2022-11-16 11:23:56,393 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593219848] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:23:56,394 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:23:56,394 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:23:56,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994732336] [2022-11-16 11:23:56,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:23:56,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:23:56,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:23:56,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:23:56,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:23:56,398 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 346 out of 412 [2022-11-16 11:23:56,401 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 380 places, 377 transitions, 870 flow. Second operand has 4 states, 4 states have (on average 348.5) internal successors, (1394), 4 states have internal predecessors, (1394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:23:56,402 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:23:56,402 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 346 of 412 [2022-11-16 11:23:56,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:23:57,033 INFO L130 PetriNetUnfolder]: 163/1107 cut-off events. [2022-11-16 11:23:57,034 INFO L131 PetriNetUnfolder]: For 85/85 co-relation queries the response was YES. [2022-11-16 11:23:57,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1839 conditions, 1107 events. 163/1107 cut-off events. For 85/85 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 7452 event pairs, 74 based on Foata normal form. 6/984 useless extension candidates. Maximal degree in co-relation 1663. Up to 201 conditions per place. [2022-11-16 11:23:57,077 INFO L137 encePairwiseOnDemand]: 403/412 looper letters, 60 selfloop transitions, 7 changer transitions 0/396 dead transitions. [2022-11-16 11:23:57,078 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 381 places, 396 transitions, 1049 flow [2022-11-16 11:23:57,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:23:57,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 11:23:57,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1452 transitions. [2022-11-16 11:23:57,083 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8810679611650486 [2022-11-16 11:23:57,083 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1452 transitions. [2022-11-16 11:23:57,084 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1452 transitions. [2022-11-16 11:23:57,085 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:23:57,085 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1452 transitions. [2022-11-16 11:23:57,098 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 363.0) internal successors, (1452), 4 states have internal predecessors, (1452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:23:57,103 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 412.0) internal successors, (2060), 5 states have internal predecessors, (2060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:23:57,105 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 412.0) internal successors, (2060), 5 states have internal predecessors, (2060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:23:57,105 INFO L175 Difference]: Start difference. First operand has 380 places, 377 transitions, 870 flow. Second operand 4 states and 1452 transitions. [2022-11-16 11:23:57,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 381 places, 396 transitions, 1049 flow [2022-11-16 11:23:57,111 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 374 places, 396 transitions, 1024 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-11-16 11:23:57,118 INFO L231 Difference]: Finished difference. Result has 376 places, 378 transitions, 875 flow [2022-11-16 11:23:57,119 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=837, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=375, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=368, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=875, PETRI_PLACES=376, PETRI_TRANSITIONS=378} [2022-11-16 11:23:57,120 INFO L288 CegarLoopForPetriNet]: 374 programPoint places, 2 predicate places. [2022-11-16 11:23:57,121 INFO L495 AbstractCegarLoop]: Abstraction has has 376 places, 378 transitions, 875 flow [2022-11-16 11:23:57,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 348.5) internal successors, (1394), 4 states have internal predecessors, (1394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:23:57,122 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:23:57,122 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 11:23:57,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 11:23:57,123 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-16 11:23:57,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:23:57,124 INFO L85 PathProgramCache]: Analyzing trace with hash -522274800, now seen corresponding path program 1 times [2022-11-16 11:23:57,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:23:57,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132223833] [2022-11-16 11:23:57,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:23:57,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:23:57,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:23:57,269 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 11:23:57,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:23:57,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132223833] [2022-11-16 11:23:57,270 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132223833] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:23:57,271 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:23:57,271 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:23:57,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269908004] [2022-11-16 11:23:57,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:23:57,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:23:57,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:23:57,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:23:57,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:23:57,276 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 346 out of 412 [2022-11-16 11:23:57,279 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 376 places, 378 transitions, 875 flow. Second operand has 6 states, 6 states have (on average 348.1666666666667) internal successors, (2089), 6 states have internal predecessors, (2089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:23:57,279 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:23:57,279 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 346 of 412 [2022-11-16 11:23:57,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:23:58,503 INFO L130 PetriNetUnfolder]: 460/3038 cut-off events. [2022-11-16 11:23:58,504 INFO L131 PetriNetUnfolder]: For 435/435 co-relation queries the response was YES. [2022-11-16 11:23:58,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4212 conditions, 3038 events. 460/3038 cut-off events. For 435/435 co-relation queries the response was YES. Maximal size of possible extension queue 258. Compared 28359 event pairs, 126 based on Foata normal form. 0/2426 useless extension candidates. Maximal degree in co-relation 3627. Up to 337 conditions per place. [2022-11-16 11:23:58,593 INFO L137 encePairwiseOnDemand]: 402/412 looper letters, 55 selfloop transitions, 9 changer transitions 0/391 dead transitions. [2022-11-16 11:23:58,594 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 381 places, 391 transitions, 1035 flow [2022-11-16 11:23:58,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 11:23:58,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 11:23:58,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2487 transitions. [2022-11-16 11:23:58,600 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8623439667128987 [2022-11-16 11:23:58,600 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2487 transitions. [2022-11-16 11:23:58,600 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2487 transitions. [2022-11-16 11:23:58,602 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:23:58,603 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2487 transitions. [2022-11-16 11:23:58,608 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 355.2857142857143) internal successors, (2487), 7 states have internal predecessors, (2487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:23:58,614 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 412.0) internal successors, (3296), 8 states have internal predecessors, (3296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:23:58,615 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 412.0) internal successors, (3296), 8 states have internal predecessors, (3296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:23:58,615 INFO L175 Difference]: Start difference. First operand has 376 places, 378 transitions, 875 flow. Second operand 7 states and 2487 transitions. [2022-11-16 11:23:58,616 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 381 places, 391 transitions, 1035 flow [2022-11-16 11:23:58,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 380 places, 391 transitions, 1030 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:23:58,625 INFO L231 Difference]: Finished difference. Result has 380 places, 377 transitions, 886 flow [2022-11-16 11:23:58,626 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=868, PETRI_DIFFERENCE_MINUEND_PLACES=374, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=377, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=368, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=886, PETRI_PLACES=380, PETRI_TRANSITIONS=377} [2022-11-16 11:23:58,626 INFO L288 CegarLoopForPetriNet]: 374 programPoint places, 6 predicate places. [2022-11-16 11:23:58,627 INFO L495 AbstractCegarLoop]: Abstraction has has 380 places, 377 transitions, 886 flow [2022-11-16 11:23:58,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 348.1666666666667) internal successors, (2089), 6 states have internal predecessors, (2089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:23:58,628 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:23:58,628 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 11:23:58,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 11:23:58,629 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-16 11:23:58,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:23:58,629 INFO L85 PathProgramCache]: Analyzing trace with hash 989351560, now seen corresponding path program 1 times [2022-11-16 11:23:58,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:23:58,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121285022] [2022-11-16 11:23:58,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:23:58,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:23:58,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:23:58,708 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 11:23:58,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:23:58,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121285022] [2022-11-16 11:23:58,709 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121285022] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:23:58,709 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:23:58,710 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:23:58,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271908315] [2022-11-16 11:23:58,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:23:58,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:23:58,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:23:58,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:23:58,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:23:58,713 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 346 out of 412 [2022-11-16 11:23:58,716 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 380 places, 377 transitions, 886 flow. Second operand has 4 states, 4 states have (on average 348.25) internal successors, (1393), 4 states have internal predecessors, (1393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:23:58,717 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:23:58,717 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 346 of 412 [2022-11-16 11:23:58,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:23:59,788 INFO L130 PetriNetUnfolder]: 614/2844 cut-off events. [2022-11-16 11:23:59,788 INFO L131 PetriNetUnfolder]: For 639/645 co-relation queries the response was YES. [2022-11-16 11:23:59,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4233 conditions, 2844 events. 614/2844 cut-off events. For 639/645 co-relation queries the response was YES. Maximal size of possible extension queue 393. Compared 31597 event pairs, 270 based on Foata normal form. 20/2167 useless extension candidates. Maximal degree in co-relation 4143. Up to 603 conditions per place. [2022-11-16 11:23:59,856 INFO L137 encePairwiseOnDemand]: 399/412 looper letters, 62 selfloop transitions, 9 changer transitions 0/398 dead transitions. [2022-11-16 11:23:59,857 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 381 places, 398 transitions, 1074 flow [2022-11-16 11:23:59,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:23:59,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 11:23:59,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1459 transitions. [2022-11-16 11:23:59,869 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8853155339805825 [2022-11-16 11:23:59,869 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1459 transitions. [2022-11-16 11:23:59,870 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1459 transitions. [2022-11-16 11:23:59,874 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:23:59,874 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1459 transitions. [2022-11-16 11:23:59,878 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 364.75) internal successors, (1459), 4 states have internal predecessors, (1459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:23:59,881 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 412.0) internal successors, (2060), 5 states have internal predecessors, (2060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:23:59,882 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 412.0) internal successors, (2060), 5 states have internal predecessors, (2060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:23:59,883 INFO L175 Difference]: Start difference. First operand has 380 places, 377 transitions, 886 flow. Second operand 4 states and 1459 transitions. [2022-11-16 11:23:59,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 381 places, 398 transitions, 1074 flow [2022-11-16 11:23:59,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 375 places, 398 transitions, 1056 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-16 11:23:59,892 INFO L231 Difference]: Finished difference. Result has 378 places, 380 transitions, 924 flow [2022-11-16 11:23:59,893 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=864, PETRI_DIFFERENCE_MINUEND_PLACES=372, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=375, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=366, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=924, PETRI_PLACES=378, PETRI_TRANSITIONS=380} [2022-11-16 11:23:59,894 INFO L288 CegarLoopForPetriNet]: 374 programPoint places, 4 predicate places. [2022-11-16 11:23:59,895 INFO L495 AbstractCegarLoop]: Abstraction has has 378 places, 380 transitions, 924 flow [2022-11-16 11:23:59,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 348.25) internal successors, (1393), 4 states have internal predecessors, (1393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:23:59,896 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:23:59,896 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 11:23:59,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-16 11:23:59,896 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-16 11:23:59,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:23:59,897 INFO L85 PathProgramCache]: Analyzing trace with hash 1594080026, now seen corresponding path program 1 times [2022-11-16 11:23:59,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:23:59,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609960107] [2022-11-16 11:23:59,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:23:59,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:23:59,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:23:59,973 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 11:23:59,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:23:59,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609960107] [2022-11-16 11:23:59,976 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609960107] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:23:59,976 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:23:59,976 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:23:59,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55444497] [2022-11-16 11:23:59,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:23:59,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:23:59,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:23:59,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:23:59,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:23:59,983 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 346 out of 412 [2022-11-16 11:23:59,985 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 378 places, 380 transitions, 924 flow. Second operand has 4 states, 4 states have (on average 348.5) internal successors, (1394), 4 states have internal predecessors, (1394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:23:59,985 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:23:59,985 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 346 of 412 [2022-11-16 11:23:59,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:24:00,796 INFO L130 PetriNetUnfolder]: 250/1491 cut-off events. [2022-11-16 11:24:00,797 INFO L131 PetriNetUnfolder]: For 322/496 co-relation queries the response was YES. [2022-11-16 11:24:00,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2328 conditions, 1491 events. 250/1491 cut-off events. For 322/496 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 12406 event pairs, 54 based on Foata normal form. 10/1183 useless extension candidates. Maximal degree in co-relation 2172. Up to 231 conditions per place. [2022-11-16 11:24:00,874 INFO L137 encePairwiseOnDemand]: 403/412 looper letters, 63 selfloop transitions, 7 changer transitions 0/397 dead transitions. [2022-11-16 11:24:00,874 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 381 places, 397 transitions, 1097 flow [2022-11-16 11:24:00,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:24:00,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 11:24:00,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1456 transitions. [2022-11-16 11:24:00,879 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.883495145631068 [2022-11-16 11:24:00,879 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1456 transitions. [2022-11-16 11:24:00,880 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1456 transitions. [2022-11-16 11:24:00,881 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:24:00,881 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1456 transitions. [2022-11-16 11:24:00,886 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 364.0) internal successors, (1456), 4 states have internal predecessors, (1456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:00,889 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 412.0) internal successors, (2060), 5 states have internal predecessors, (2060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:00,890 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 412.0) internal successors, (2060), 5 states have internal predecessors, (2060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:00,890 INFO L175 Difference]: Start difference. First operand has 378 places, 380 transitions, 924 flow. Second operand 4 states and 1456 transitions. [2022-11-16 11:24:00,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 381 places, 397 transitions, 1097 flow [2022-11-16 11:24:00,894 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 380 places, 397 transitions, 1092 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:24:00,899 INFO L231 Difference]: Finished difference. Result has 380 places, 378 transitions, 921 flow [2022-11-16 11:24:00,901 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=907, PETRI_DIFFERENCE_MINUEND_PLACES=377, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=378, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=371, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=921, PETRI_PLACES=380, PETRI_TRANSITIONS=378} [2022-11-16 11:24:00,902 INFO L288 CegarLoopForPetriNet]: 374 programPoint places, 6 predicate places. [2022-11-16 11:24:00,903 INFO L495 AbstractCegarLoop]: Abstraction has has 380 places, 378 transitions, 921 flow [2022-11-16 11:24:00,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 348.5) internal successors, (1394), 4 states have internal predecessors, (1394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:00,904 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:24:00,904 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 11:24:00,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-16 11:24:00,905 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-16 11:24:00,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:24:00,905 INFO L85 PathProgramCache]: Analyzing trace with hash 1694322091, now seen corresponding path program 1 times [2022-11-16 11:24:00,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:24:00,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375001217] [2022-11-16 11:24:00,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:24:00,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:24:00,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:01,056 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 11:24:01,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:24:01,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375001217] [2022-11-16 11:24:01,057 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375001217] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:24:01,057 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:24:01,057 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 11:24:01,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465196860] [2022-11-16 11:24:01,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:24:01,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 11:24:01,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:24:01,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 11:24:01,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:24:01,062 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 336 out of 412 [2022-11-16 11:24:01,065 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 380 places, 378 transitions, 921 flow. Second operand has 8 states, 8 states have (on average 338.0) internal successors, (2704), 8 states have internal predecessors, (2704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:01,065 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:24:01,065 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 336 of 412 [2022-11-16 11:24:01,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:24:02,014 INFO L130 PetriNetUnfolder]: 259/1487 cut-off events. [2022-11-16 11:24:02,014 INFO L131 PetriNetUnfolder]: For 123/123 co-relation queries the response was YES. [2022-11-16 11:24:02,045 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2525 conditions, 1487 events. 259/1487 cut-off events. For 123/123 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 10666 event pairs, 60 based on Foata normal form. 0/1345 useless extension candidates. Maximal degree in co-relation 2369. Up to 155 conditions per place. [2022-11-16 11:24:02,073 INFO L137 encePairwiseOnDemand]: 397/412 looper letters, 67 selfloop transitions, 16 changer transitions 0/402 dead transitions. [2022-11-16 11:24:02,074 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 390 places, 402 transitions, 1156 flow [2022-11-16 11:24:02,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 11:24:02,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-16 11:24:02,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 3778 transitions. [2022-11-16 11:24:02,085 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8336275375110327 [2022-11-16 11:24:02,086 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 3778 transitions. [2022-11-16 11:24:02,086 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 3778 transitions. [2022-11-16 11:24:02,089 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:24:02,090 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 3778 transitions. [2022-11-16 11:24:02,100 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 343.45454545454544) internal successors, (3778), 11 states have internal predecessors, (3778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:02,111 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 412.0) internal successors, (4944), 12 states have internal predecessors, (4944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:02,113 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 412.0) internal successors, (4944), 12 states have internal predecessors, (4944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:02,113 INFO L175 Difference]: Start difference. First operand has 380 places, 378 transitions, 921 flow. Second operand 11 states and 3778 transitions. [2022-11-16 11:24:02,114 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 390 places, 402 transitions, 1156 flow [2022-11-16 11:24:02,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 388 places, 402 transitions, 1145 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 11:24:02,124 INFO L231 Difference]: Finished difference. Result has 390 places, 379 transitions, 955 flow [2022-11-16 11:24:02,125 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=910, PETRI_DIFFERENCE_MINUEND_PLACES=378, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=378, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=362, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=955, PETRI_PLACES=390, PETRI_TRANSITIONS=379} [2022-11-16 11:24:02,126 INFO L288 CegarLoopForPetriNet]: 374 programPoint places, 16 predicate places. [2022-11-16 11:24:02,126 INFO L495 AbstractCegarLoop]: Abstraction has has 390 places, 379 transitions, 955 flow [2022-11-16 11:24:02,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 338.0) internal successors, (2704), 8 states have internal predecessors, (2704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:02,128 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:24:02,128 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 11:24:02,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-16 11:24:02,128 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-16 11:24:02,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:24:02,129 INFO L85 PathProgramCache]: Analyzing trace with hash -2123125656, now seen corresponding path program 1 times [2022-11-16 11:24:02,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:24:02,130 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909575490] [2022-11-16 11:24:02,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:24:02,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:24:02,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:02,241 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 11:24:02,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:24:02,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909575490] [2022-11-16 11:24:02,242 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909575490] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:24:02,243 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:24:02,243 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:24:02,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470628237] [2022-11-16 11:24:02,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:24:02,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:24:02,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:24:02,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:24:02,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:24:02,247 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 346 out of 412 [2022-11-16 11:24:02,250 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 390 places, 379 transitions, 955 flow. Second operand has 6 states, 6 states have (on average 348.3333333333333) internal successors, (2090), 6 states have internal predecessors, (2090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:02,250 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:24:02,250 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 346 of 412 [2022-11-16 11:24:02,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:24:03,935 INFO L130 PetriNetUnfolder]: 710/4612 cut-off events. [2022-11-16 11:24:03,936 INFO L131 PetriNetUnfolder]: For 688/1287 co-relation queries the response was YES. [2022-11-16 11:24:04,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7375 conditions, 4612 events. 710/4612 cut-off events. For 688/1287 co-relation queries the response was YES. Maximal size of possible extension queue 251. Compared 50049 event pairs, 82 based on Foata normal form. 5/3773 useless extension candidates. Maximal degree in co-relation 5777. Up to 558 conditions per place. [2022-11-16 11:24:04,061 INFO L137 encePairwiseOnDemand]: 402/412 looper letters, 47 selfloop transitions, 10 changer transitions 0/387 dead transitions. [2022-11-16 11:24:04,061 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 395 places, 387 transitions, 1103 flow [2022-11-16 11:24:04,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 11:24:04,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 11:24:04,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2479 transitions. [2022-11-16 11:24:04,068 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8595700416088765 [2022-11-16 11:24:04,068 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2479 transitions. [2022-11-16 11:24:04,068 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2479 transitions. [2022-11-16 11:24:04,070 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:24:04,070 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2479 transitions. [2022-11-16 11:24:04,075 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 354.14285714285717) internal successors, (2479), 7 states have internal predecessors, (2479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:04,081 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 412.0) internal successors, (3296), 8 states have internal predecessors, (3296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:04,082 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 412.0) internal successors, (3296), 8 states have internal predecessors, (3296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:04,083 INFO L175 Difference]: Start difference. First operand has 390 places, 379 transitions, 955 flow. Second operand 7 states and 2479 transitions. [2022-11-16 11:24:04,083 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 395 places, 387 transitions, 1103 flow [2022-11-16 11:24:04,088 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 389 places, 387 transitions, 1073 flow, removed 1 selfloop flow, removed 6 redundant places. [2022-11-16 11:24:04,093 INFO L231 Difference]: Finished difference. Result has 389 places, 378 transitions, 949 flow [2022-11-16 11:24:04,094 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=929, PETRI_DIFFERENCE_MINUEND_PLACES=383, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=378, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=368, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=949, PETRI_PLACES=389, PETRI_TRANSITIONS=378} [2022-11-16 11:24:04,094 INFO L288 CegarLoopForPetriNet]: 374 programPoint places, 15 predicate places. [2022-11-16 11:24:04,095 INFO L495 AbstractCegarLoop]: Abstraction has has 389 places, 378 transitions, 949 flow [2022-11-16 11:24:04,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 348.3333333333333) internal successors, (2090), 6 states have internal predecessors, (2090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:04,096 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:24:04,096 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:24:04,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-16 11:24:04,097 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-16 11:24:04,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:24:04,097 INFO L85 PathProgramCache]: Analyzing trace with hash 984378268, now seen corresponding path program 1 times [2022-11-16 11:24:04,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:24:04,098 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785127097] [2022-11-16 11:24:04,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:24:04,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:24:04,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:04,247 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 11:24:04,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:24:04,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785127097] [2022-11-16 11:24:04,248 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785127097] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:24:04,248 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:24:04,248 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 11:24:04,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309015384] [2022-11-16 11:24:04,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:24:04,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 11:24:04,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:24:04,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 11:24:04,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:24:04,252 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 336 out of 412 [2022-11-16 11:24:04,255 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 389 places, 378 transitions, 949 flow. Second operand has 8 states, 8 states have (on average 338.125) internal successors, (2705), 8 states have internal predecessors, (2705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:04,255 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:24:04,255 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 336 of 412 [2022-11-16 11:24:04,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:24:05,316 INFO L130 PetriNetUnfolder]: 250/2273 cut-off events. [2022-11-16 11:24:05,316 INFO L131 PetriNetUnfolder]: For 188/188 co-relation queries the response was YES. [2022-11-16 11:24:05,350 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3418 conditions, 2273 events. 250/2273 cut-off events. For 188/188 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 18575 event pairs, 53 based on Foata normal form. 0/2029 useless extension candidates. Maximal degree in co-relation 2921. Up to 155 conditions per place. [2022-11-16 11:24:05,369 INFO L137 encePairwiseOnDemand]: 396/412 looper letters, 69 selfloop transitions, 17 changer transitions 0/404 dead transitions. [2022-11-16 11:24:05,369 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 399 places, 404 transitions, 1201 flow [2022-11-16 11:24:05,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 11:24:05,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-16 11:24:05,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 3780 transitions. [2022-11-16 11:24:05,384 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8340688437775816 [2022-11-16 11:24:05,384 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 3780 transitions. [2022-11-16 11:24:05,384 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 3780 transitions. [2022-11-16 11:24:05,387 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:24:05,387 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 3780 transitions. [2022-11-16 11:24:05,396 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 343.6363636363636) internal successors, (3780), 11 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:05,405 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 412.0) internal successors, (4944), 12 states have internal predecessors, (4944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:05,408 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 412.0) internal successors, (4944), 12 states have internal predecessors, (4944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:05,408 INFO L175 Difference]: Start difference. First operand has 389 places, 378 transitions, 949 flow. Second operand 11 states and 3780 transitions. [2022-11-16 11:24:05,408 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 399 places, 404 transitions, 1201 flow [2022-11-16 11:24:05,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 393 places, 404 transitions, 1181 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-16 11:24:05,419 INFO L231 Difference]: Finished difference. Result has 395 places, 379 transitions, 976 flow [2022-11-16 11:24:05,420 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=929, PETRI_DIFFERENCE_MINUEND_PLACES=383, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=378, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=361, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=976, PETRI_PLACES=395, PETRI_TRANSITIONS=379} [2022-11-16 11:24:05,421 INFO L288 CegarLoopForPetriNet]: 374 programPoint places, 21 predicate places. [2022-11-16 11:24:05,422 INFO L495 AbstractCegarLoop]: Abstraction has has 395 places, 379 transitions, 976 flow [2022-11-16 11:24:05,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 338.125) internal successors, (2705), 8 states have internal predecessors, (2705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:05,423 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:24:05,423 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 11:24:05,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-16 11:24:05,424 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-16 11:24:05,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:24:05,425 INFO L85 PathProgramCache]: Analyzing trace with hash 661073355, now seen corresponding path program 1 times [2022-11-16 11:24:05,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:24:05,425 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724915356] [2022-11-16 11:24:05,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:24:05,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:24:05,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:05,512 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 11:24:05,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:24:05,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724915356] [2022-11-16 11:24:05,513 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724915356] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:24:05,513 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:24:05,514 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:24:05,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878029314] [2022-11-16 11:24:05,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:24:05,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:24:05,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:24:05,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:24:05,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:24:05,517 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 346 out of 412 [2022-11-16 11:24:05,519 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 395 places, 379 transitions, 976 flow. Second operand has 4 states, 4 states have (on average 348.75) internal successors, (1395), 4 states have internal predecessors, (1395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:05,519 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:24:05,520 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 346 of 412 [2022-11-16 11:24:05,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:24:06,372 INFO L130 PetriNetUnfolder]: 313/1758 cut-off events. [2022-11-16 11:24:06,372 INFO L131 PetriNetUnfolder]: For 324/546 co-relation queries the response was YES. [2022-11-16 11:24:06,399 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2822 conditions, 1758 events. 313/1758 cut-off events. For 324/546 co-relation queries the response was YES. Maximal size of possible extension queue 232. Compared 15659 event pairs, 148 based on Foata normal form. 10/1394 useless extension candidates. Maximal degree in co-relation 2662. Up to 356 conditions per place. [2022-11-16 11:24:06,424 INFO L137 encePairwiseOnDemand]: 403/412 looper letters, 59 selfloop transitions, 7 changer transitions 0/397 dead transitions. [2022-11-16 11:24:06,424 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 396 places, 397 transitions, 1150 flow [2022-11-16 11:24:06,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:24:06,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 11:24:06,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1451 transitions. [2022-11-16 11:24:06,428 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8804611650485437 [2022-11-16 11:24:06,429 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1451 transitions. [2022-11-16 11:24:06,429 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1451 transitions. [2022-11-16 11:24:06,430 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:24:06,430 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1451 transitions. [2022-11-16 11:24:06,432 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 362.75) internal successors, (1451), 4 states have internal predecessors, (1451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:06,436 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 412.0) internal successors, (2060), 5 states have internal predecessors, (2060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:06,436 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 412.0) internal successors, (2060), 5 states have internal predecessors, (2060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:06,437 INFO L175 Difference]: Start difference. First operand has 395 places, 379 transitions, 976 flow. Second operand 4 states and 1451 transitions. [2022-11-16 11:24:06,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 396 places, 397 transitions, 1150 flow [2022-11-16 11:24:06,441 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 389 places, 397 transitions, 1120 flow, removed 1 selfloop flow, removed 7 redundant places. [2022-11-16 11:24:06,445 INFO L231 Difference]: Finished difference. Result has 391 places, 380 transitions, 976 flow [2022-11-16 11:24:06,446 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=938, PETRI_DIFFERENCE_MINUEND_PLACES=386, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=377, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=370, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=976, PETRI_PLACES=391, PETRI_TRANSITIONS=380} [2022-11-16 11:24:06,446 INFO L288 CegarLoopForPetriNet]: 374 programPoint places, 17 predicate places. [2022-11-16 11:24:06,447 INFO L495 AbstractCegarLoop]: Abstraction has has 391 places, 380 transitions, 976 flow [2022-11-16 11:24:06,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 348.75) internal successors, (1395), 4 states have internal predecessors, (1395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:06,447 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:24:06,447 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:24:06,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-16 11:24:06,448 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-16 11:24:06,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:24:06,448 INFO L85 PathProgramCache]: Analyzing trace with hash 867689856, now seen corresponding path program 1 times [2022-11-16 11:24:06,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:24:06,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814819329] [2022-11-16 11:24:06,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:24:06,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:24:06,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:06,583 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 11:24:06,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:24:06,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814819329] [2022-11-16 11:24:06,584 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814819329] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:24:06,584 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:24:06,584 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:24:06,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800773299] [2022-11-16 11:24:06,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:24:06,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:24:06,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:24:06,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:24:06,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:24:06,587 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 326 out of 412 [2022-11-16 11:24:06,589 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 391 places, 380 transitions, 976 flow. Second operand has 6 states, 6 states have (on average 329.3333333333333) internal successors, (1976), 6 states have internal predecessors, (1976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:06,589 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:24:06,590 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 326 of 412 [2022-11-16 11:24:06,590 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:24:07,326 INFO L130 PetriNetUnfolder]: 241/1280 cut-off events. [2022-11-16 11:24:07,326 INFO L131 PetriNetUnfolder]: For 143/143 co-relation queries the response was YES. [2022-11-16 11:24:07,349 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2509 conditions, 1280 events. 241/1280 cut-off events. For 143/143 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 9242 event pairs, 122 based on Foata normal form. 3/1175 useless extension candidates. Maximal degree in co-relation 2347. Up to 315 conditions per place. [2022-11-16 11:24:07,365 INFO L137 encePairwiseOnDemand]: 395/412 looper letters, 74 selfloop transitions, 17 changer transitions 0/400 dead transitions. [2022-11-16 11:24:07,365 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 396 places, 400 transitions, 1212 flow [2022-11-16 11:24:07,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 11:24:07,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 11:24:07,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2372 transitions. [2022-11-16 11:24:07,371 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8224687933425797 [2022-11-16 11:24:07,371 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2372 transitions. [2022-11-16 11:24:07,371 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2372 transitions. [2022-11-16 11:24:07,373 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:24:07,373 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2372 transitions. [2022-11-16 11:24:07,378 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 338.85714285714283) internal successors, (2372), 7 states have internal predecessors, (2372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:07,383 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 412.0) internal successors, (3296), 8 states have internal predecessors, (3296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:07,384 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 412.0) internal successors, (3296), 8 states have internal predecessors, (3296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:07,385 INFO L175 Difference]: Start difference. First operand has 391 places, 380 transitions, 976 flow. Second operand 7 states and 2372 transitions. [2022-11-16 11:24:07,385 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 396 places, 400 transitions, 1212 flow [2022-11-16 11:24:07,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 394 places, 400 transitions, 1204 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 11:24:07,394 INFO L231 Difference]: Finished difference. Result has 399 places, 388 transitions, 1067 flow [2022-11-16 11:24:07,395 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=964, PETRI_DIFFERENCE_MINUEND_PLACES=388, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=379, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=362, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1067, PETRI_PLACES=399, PETRI_TRANSITIONS=388} [2022-11-16 11:24:07,395 INFO L288 CegarLoopForPetriNet]: 374 programPoint places, 25 predicate places. [2022-11-16 11:24:07,396 INFO L495 AbstractCegarLoop]: Abstraction has has 399 places, 388 transitions, 1067 flow [2022-11-16 11:24:07,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 329.3333333333333) internal successors, (1976), 6 states have internal predecessors, (1976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:07,397 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:24:07,397 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:24:07,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-16 11:24:07,397 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-16 11:24:07,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:24:07,398 INFO L85 PathProgramCache]: Analyzing trace with hash 1855612976, now seen corresponding path program 1 times [2022-11-16 11:24:07,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:24:07,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707598952] [2022-11-16 11:24:07,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:24:07,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:24:07,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:07,530 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 11:24:07,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:24:07,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707598952] [2022-11-16 11:24:07,532 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707598952] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:24:07,533 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:24:07,533 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:24:07,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426830080] [2022-11-16 11:24:07,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:24:07,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:24:07,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:24:07,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:24:07,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:24:07,537 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 326 out of 412 [2022-11-16 11:24:07,539 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 399 places, 388 transitions, 1067 flow. Second operand has 6 states, 6 states have (on average 329.5) internal successors, (1977), 6 states have internal predecessors, (1977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:07,539 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:24:07,539 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 326 of 412 [2022-11-16 11:24:07,539 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:24:08,382 INFO L130 PetriNetUnfolder]: 225/1258 cut-off events. [2022-11-16 11:24:08,382 INFO L131 PetriNetUnfolder]: For 325/325 co-relation queries the response was YES. [2022-11-16 11:24:08,406 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2610 conditions, 1258 events. 225/1258 cut-off events. For 325/325 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 9008 event pairs, 102 based on Foata normal form. 3/1192 useless extension candidates. Maximal degree in co-relation 2445. Up to 265 conditions per place. [2022-11-16 11:24:08,424 INFO L137 encePairwiseOnDemand]: 394/412 looper letters, 94 selfloop transitions, 20 changer transitions 0/423 dead transitions. [2022-11-16 11:24:08,424 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 404 places, 423 transitions, 1424 flow [2022-11-16 11:24:08,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 11:24:08,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 11:24:08,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2386 transitions. [2022-11-16 11:24:08,430 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8273231622746186 [2022-11-16 11:24:08,430 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2386 transitions. [2022-11-16 11:24:08,431 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2386 transitions. [2022-11-16 11:24:08,432 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:24:08,432 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2386 transitions. [2022-11-16 11:24:08,437 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 340.85714285714283) internal successors, (2386), 7 states have internal predecessors, (2386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:08,444 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 412.0) internal successors, (3296), 8 states have internal predecessors, (3296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:08,445 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 412.0) internal successors, (3296), 8 states have internal predecessors, (3296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:08,445 INFO L175 Difference]: Start difference. First operand has 399 places, 388 transitions, 1067 flow. Second operand 7 states and 2386 transitions. [2022-11-16 11:24:08,446 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 404 places, 423 transitions, 1424 flow [2022-11-16 11:24:08,452 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 402 places, 423 transitions, 1412 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 11:24:08,459 INFO L231 Difference]: Finished difference. Result has 407 places, 399 transitions, 1193 flow [2022-11-16 11:24:08,459 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=1053, PETRI_DIFFERENCE_MINUEND_PLACES=396, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=387, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=367, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1193, PETRI_PLACES=407, PETRI_TRANSITIONS=399} [2022-11-16 11:24:08,460 INFO L288 CegarLoopForPetriNet]: 374 programPoint places, 33 predicate places. [2022-11-16 11:24:08,460 INFO L495 AbstractCegarLoop]: Abstraction has has 407 places, 399 transitions, 1193 flow [2022-11-16 11:24:08,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 329.5) internal successors, (1977), 6 states have internal predecessors, (1977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:08,461 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:24:08,462 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 11:24:08,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-16 11:24:08,462 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-16 11:24:08,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:24:08,463 INFO L85 PathProgramCache]: Analyzing trace with hash 408232943, now seen corresponding path program 1 times [2022-11-16 11:24:08,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:24:08,463 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295362847] [2022-11-16 11:24:08,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:24:08,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:24:08,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:08,535 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 11:24:08,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:24:08,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295362847] [2022-11-16 11:24:08,536 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295362847] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:24:08,536 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:24:08,536 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:24:08,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806970030] [2022-11-16 11:24:08,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:24:08,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:24:08,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:24:08,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:24:08,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:24:08,540 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 346 out of 412 [2022-11-16 11:24:08,542 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 407 places, 399 transitions, 1193 flow. Second operand has 4 states, 4 states have (on average 348.75) internal successors, (1395), 4 states have internal predecessors, (1395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:08,542 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:24:08,542 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 346 of 412 [2022-11-16 11:24:08,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:24:09,739 INFO L130 PetriNetUnfolder]: 727/3244 cut-off events. [2022-11-16 11:24:09,739 INFO L131 PetriNetUnfolder]: For 1116/1122 co-relation queries the response was YES. [2022-11-16 11:24:09,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5243 conditions, 3244 events. 727/3244 cut-off events. For 1116/1122 co-relation queries the response was YES. Maximal size of possible extension queue 528. Compared 37502 event pairs, 288 based on Foata normal form. 26/2442 useless extension candidates. Maximal degree in co-relation 5141. Up to 629 conditions per place. [2022-11-16 11:24:09,774 INFO L137 encePairwiseOnDemand]: 403/412 looper letters, 62 selfloop transitions, 7 changer transitions 0/415 dead transitions. [2022-11-16 11:24:09,774 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 410 places, 415 transitions, 1359 flow [2022-11-16 11:24:09,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:24:09,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 11:24:09,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1455 transitions. [2022-11-16 11:24:09,777 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8828883495145631 [2022-11-16 11:24:09,777 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1455 transitions. [2022-11-16 11:24:09,777 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1455 transitions. [2022-11-16 11:24:09,778 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:24:09,778 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1455 transitions. [2022-11-16 11:24:09,781 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 363.75) internal successors, (1455), 4 states have internal predecessors, (1455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:09,784 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 412.0) internal successors, (2060), 5 states have internal predecessors, (2060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:09,785 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 412.0) internal successors, (2060), 5 states have internal predecessors, (2060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:09,785 INFO L175 Difference]: Start difference. First operand has 407 places, 399 transitions, 1193 flow. Second operand 4 states and 1455 transitions. [2022-11-16 11:24:09,785 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 410 places, 415 transitions, 1359 flow [2022-11-16 11:24:09,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 408 places, 415 transitions, 1346 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 11:24:09,796 INFO L231 Difference]: Finished difference. Result has 408 places, 397 transitions, 1182 flow [2022-11-16 11:24:09,796 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=1168, PETRI_DIFFERENCE_MINUEND_PLACES=405, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=397, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=390, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1182, PETRI_PLACES=408, PETRI_TRANSITIONS=397} [2022-11-16 11:24:09,797 INFO L288 CegarLoopForPetriNet]: 374 programPoint places, 34 predicate places. [2022-11-16 11:24:09,797 INFO L495 AbstractCegarLoop]: Abstraction has has 408 places, 397 transitions, 1182 flow [2022-11-16 11:24:09,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 348.75) internal successors, (1395), 4 states have internal predecessors, (1395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:09,798 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:24:09,799 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 11:24:09,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-16 11:24:09,799 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-16 11:24:09,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:24:09,800 INFO L85 PathProgramCache]: Analyzing trace with hash -229679462, now seen corresponding path program 1 times [2022-11-16 11:24:09,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:24:09,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110510077] [2022-11-16 11:24:09,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:24:09,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:24:09,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:09,891 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 11:24:09,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:24:09,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110510077] [2022-11-16 11:24:09,892 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110510077] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:24:09,892 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:24:09,892 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:24:09,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591941622] [2022-11-16 11:24:09,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:24:09,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:24:09,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:24:09,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:24:09,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:24:09,895 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 346 out of 412 [2022-11-16 11:24:09,897 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 408 places, 397 transitions, 1182 flow. Second operand has 6 states, 6 states have (on average 348.5) internal successors, (2091), 6 states have internal predecessors, (2091), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:09,897 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:24:09,898 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 346 of 412 [2022-11-16 11:24:09,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:24:11,311 INFO L130 PetriNetUnfolder]: 676/4093 cut-off events. [2022-11-16 11:24:11,311 INFO L131 PetriNetUnfolder]: For 1243/1243 co-relation queries the response was YES. [2022-11-16 11:24:11,370 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6691 conditions, 4093 events. 676/4093 cut-off events. For 1243/1243 co-relation queries the response was YES. Maximal size of possible extension queue 438. Compared 42905 event pairs, 215 based on Foata normal form. 0/3371 useless extension candidates. Maximal degree in co-relation 5843. Up to 636 conditions per place. [2022-11-16 11:24:11,518 INFO L137 encePairwiseOnDemand]: 402/412 looper letters, 47 selfloop transitions, 10 changer transitions 0/405 dead transitions. [2022-11-16 11:24:11,518 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 413 places, 405 transitions, 1318 flow [2022-11-16 11:24:11,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 11:24:11,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 11:24:11,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2479 transitions. [2022-11-16 11:24:11,522 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8595700416088765 [2022-11-16 11:24:11,522 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2479 transitions. [2022-11-16 11:24:11,523 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2479 transitions. [2022-11-16 11:24:11,523 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:24:11,524 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2479 transitions. [2022-11-16 11:24:11,528 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 354.14285714285717) internal successors, (2479), 7 states have internal predecessors, (2479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:11,535 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 412.0) internal successors, (3296), 8 states have internal predecessors, (3296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:11,536 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 412.0) internal successors, (3296), 8 states have internal predecessors, (3296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:11,536 INFO L175 Difference]: Start difference. First operand has 408 places, 397 transitions, 1182 flow. Second operand 7 states and 2479 transitions. [2022-11-16 11:24:11,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 413 places, 405 transitions, 1318 flow [2022-11-16 11:24:11,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 411 places, 405 transitions, 1307 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 11:24:11,549 INFO L231 Difference]: Finished difference. Result has 411 places, 396 transitions, 1189 flow [2022-11-16 11:24:11,550 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=1169, PETRI_DIFFERENCE_MINUEND_PLACES=405, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=396, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=386, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1189, PETRI_PLACES=411, PETRI_TRANSITIONS=396} [2022-11-16 11:24:11,551 INFO L288 CegarLoopForPetriNet]: 374 programPoint places, 37 predicate places. [2022-11-16 11:24:11,551 INFO L495 AbstractCegarLoop]: Abstraction has has 411 places, 396 transitions, 1189 flow [2022-11-16 11:24:11,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 348.5) internal successors, (2091), 6 states have internal predecessors, (2091), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:11,552 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:24:11,552 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 11:24:11,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-16 11:24:11,553 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-16 11:24:11,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:24:11,553 INFO L85 PathProgramCache]: Analyzing trace with hash 1117481005, now seen corresponding path program 1 times [2022-11-16 11:24:11,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:24:11,553 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929309032] [2022-11-16 11:24:11,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:24:11,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:24:11,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:11,684 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 11:24:11,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:24:11,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929309032] [2022-11-16 11:24:11,685 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929309032] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:24:11,685 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:24:11,685 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 11:24:11,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549751605] [2022-11-16 11:24:11,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:24:11,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 11:24:11,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:24:11,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 11:24:11,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:24:11,690 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 336 out of 412 [2022-11-16 11:24:11,693 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 411 places, 396 transitions, 1189 flow. Second operand has 8 states, 8 states have (on average 338.125) internal successors, (2705), 8 states have internal predecessors, (2705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:11,693 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:24:11,693 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 336 of 412 [2022-11-16 11:24:11,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:24:13,214 INFO L130 PetriNetUnfolder]: 1056/4174 cut-off events. [2022-11-16 11:24:13,215 INFO L131 PetriNetUnfolder]: For 624/729 co-relation queries the response was YES. [2022-11-16 11:24:13,289 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7461 conditions, 4174 events. 1056/4174 cut-off events. For 624/729 co-relation queries the response was YES. Maximal size of possible extension queue 413. Compared 47019 event pairs, 266 based on Foata normal form. 0/3332 useless extension candidates. Maximal degree in co-relation 6872. Up to 526 conditions per place. [2022-11-16 11:24:13,346 INFO L137 encePairwiseOnDemand]: 397/412 looper letters, 67 selfloop transitions, 16 changer transitions 0/420 dead transitions. [2022-11-16 11:24:13,346 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 421 places, 420 transitions, 1424 flow [2022-11-16 11:24:13,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 11:24:13,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-16 11:24:13,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 3778 transitions. [2022-11-16 11:24:13,350 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8336275375110327 [2022-11-16 11:24:13,351 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 3778 transitions. [2022-11-16 11:24:13,351 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 3778 transitions. [2022-11-16 11:24:13,352 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:24:13,352 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 3778 transitions. [2022-11-16 11:24:13,358 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 343.45454545454544) internal successors, (3778), 11 states have internal predecessors, (3778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:13,363 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 412.0) internal successors, (4944), 12 states have internal predecessors, (4944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:13,364 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 412.0) internal successors, (4944), 12 states have internal predecessors, (4944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:13,365 INFO L175 Difference]: Start difference. First operand has 411 places, 396 transitions, 1189 flow. Second operand 11 states and 3778 transitions. [2022-11-16 11:24:13,365 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 421 places, 420 transitions, 1424 flow [2022-11-16 11:24:13,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 415 places, 420 transitions, 1404 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-16 11:24:13,377 INFO L231 Difference]: Finished difference. Result has 417 places, 397 transitions, 1214 flow [2022-11-16 11:24:13,377 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=1169, PETRI_DIFFERENCE_MINUEND_PLACES=405, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=396, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=380, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1214, PETRI_PLACES=417, PETRI_TRANSITIONS=397} [2022-11-16 11:24:13,378 INFO L288 CegarLoopForPetriNet]: 374 programPoint places, 43 predicate places. [2022-11-16 11:24:13,378 INFO L495 AbstractCegarLoop]: Abstraction has has 417 places, 397 transitions, 1214 flow [2022-11-16 11:24:13,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 338.125) internal successors, (2705), 8 states have internal predecessors, (2705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:13,379 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:24:13,379 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:24:13,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-16 11:24:13,380 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-16 11:24:13,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:24:13,380 INFO L85 PathProgramCache]: Analyzing trace with hash 282173889, now seen corresponding path program 1 times [2022-11-16 11:24:13,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:24:13,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854771930] [2022-11-16 11:24:13,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:24:13,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:24:13,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:13,495 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 11:24:13,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:24:13,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854771930] [2022-11-16 11:24:13,495 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854771930] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:24:13,495 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:24:13,496 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 11:24:13,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510051215] [2022-11-16 11:24:13,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:24:13,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 11:24:13,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:24:13,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 11:24:13,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:24:13,499 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 336 out of 412 [2022-11-16 11:24:13,501 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 417 places, 397 transitions, 1214 flow. Second operand has 8 states, 8 states have (on average 338.25) internal successors, (2706), 8 states have internal predecessors, (2706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:13,501 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:24:13,502 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 336 of 412 [2022-11-16 11:24:13,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:24:15,601 INFO L130 PetriNetUnfolder]: 959/5848 cut-off events. [2022-11-16 11:24:15,602 INFO L131 PetriNetUnfolder]: For 1221/1353 co-relation queries the response was YES. [2022-11-16 11:24:15,659 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9905 conditions, 5848 events. 959/5848 cut-off events. For 1221/1353 co-relation queries the response was YES. Maximal size of possible extension queue 328. Compared 69177 event pairs, 205 based on Foata normal form. 0/4960 useless extension candidates. Maximal degree in co-relation 8382. Up to 526 conditions per place. [2022-11-16 11:24:15,721 INFO L137 encePairwiseOnDemand]: 396/412 looper letters, 69 selfloop transitions, 17 changer transitions 0/423 dead transitions. [2022-11-16 11:24:15,722 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 427 places, 423 transitions, 1466 flow [2022-11-16 11:24:15,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 11:24:15,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-16 11:24:15,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 3780 transitions. [2022-11-16 11:24:15,728 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8340688437775816 [2022-11-16 11:24:15,728 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 3780 transitions. [2022-11-16 11:24:15,729 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 3780 transitions. [2022-11-16 11:24:15,730 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:24:15,731 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 3780 transitions. [2022-11-16 11:24:15,738 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 343.6363636363636) internal successors, (3780), 11 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:15,744 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 412.0) internal successors, (4944), 12 states have internal predecessors, (4944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:15,746 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 412.0) internal successors, (4944), 12 states have internal predecessors, (4944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:15,746 INFO L175 Difference]: Start difference. First operand has 417 places, 397 transitions, 1214 flow. Second operand 11 states and 3780 transitions. [2022-11-16 11:24:15,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 427 places, 423 transitions, 1466 flow [2022-11-16 11:24:15,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 421 places, 423 transitions, 1442 flow, removed 1 selfloop flow, removed 6 redundant places. [2022-11-16 11:24:15,764 INFO L231 Difference]: Finished difference. Result has 423 places, 398 transitions, 1237 flow [2022-11-16 11:24:15,765 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=1190, PETRI_DIFFERENCE_MINUEND_PLACES=411, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=397, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=380, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1237, PETRI_PLACES=423, PETRI_TRANSITIONS=398} [2022-11-16 11:24:15,766 INFO L288 CegarLoopForPetriNet]: 374 programPoint places, 49 predicate places. [2022-11-16 11:24:15,766 INFO L495 AbstractCegarLoop]: Abstraction has has 423 places, 398 transitions, 1237 flow [2022-11-16 11:24:15,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 338.25) internal successors, (2706), 8 states have internal predecessors, (2706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:15,767 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:24:15,767 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:24:15,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-16 11:24:15,767 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-16 11:24:15,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:24:15,768 INFO L85 PathProgramCache]: Analyzing trace with hash -803264419, now seen corresponding path program 1 times [2022-11-16 11:24:15,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:24:15,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970888845] [2022-11-16 11:24:15,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:24:15,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:24:15,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:15,843 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 11:24:15,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:24:15,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970888845] [2022-11-16 11:24:15,844 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970888845] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:24:15,844 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:24:15,844 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:24:15,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042525853] [2022-11-16 11:24:15,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:24:15,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:24:15,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:24:15,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:24:15,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:24:15,849 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 346 out of 412 [2022-11-16 11:24:15,850 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 423 places, 398 transitions, 1237 flow. Second operand has 4 states, 4 states have (on average 349.0) internal successors, (1396), 4 states have internal predecessors, (1396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:15,851 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:24:15,851 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 346 of 412 [2022-11-16 11:24:15,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:24:17,405 INFO L130 PetriNetUnfolder]: 918/4207 cut-off events. [2022-11-16 11:24:17,405 INFO L131 PetriNetUnfolder]: For 1208/1214 co-relation queries the response was YES. [2022-11-16 11:24:17,440 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6592 conditions, 4207 events. 918/4207 cut-off events. For 1208/1214 co-relation queries the response was YES. Maximal size of possible extension queue 684. Compared 49469 event pairs, 651 based on Foata normal form. 26/3204 useless extension candidates. Maximal degree in co-relation 6483. Up to 967 conditions per place. [2022-11-16 11:24:17,466 INFO L137 encePairwiseOnDemand]: 403/412 looper letters, 58 selfloop transitions, 7 changer transitions 0/415 dead transitions. [2022-11-16 11:24:17,466 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 424 places, 415 transitions, 1404 flow [2022-11-16 11:24:17,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:24:17,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 11:24:17,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1450 transitions. [2022-11-16 11:24:17,469 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8798543689320388 [2022-11-16 11:24:17,469 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1450 transitions. [2022-11-16 11:24:17,469 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1450 transitions. [2022-11-16 11:24:17,469 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:24:17,470 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1450 transitions. [2022-11-16 11:24:17,472 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 362.5) internal successors, (1450), 4 states have internal predecessors, (1450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:17,475 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 412.0) internal successors, (2060), 5 states have internal predecessors, (2060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:17,476 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 412.0) internal successors, (2060), 5 states have internal predecessors, (2060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:17,476 INFO L175 Difference]: Start difference. First operand has 423 places, 398 transitions, 1237 flow. Second operand 4 states and 1450 transitions. [2022-11-16 11:24:17,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 424 places, 415 transitions, 1404 flow [2022-11-16 11:24:17,485 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 417 places, 415 transitions, 1374 flow, removed 1 selfloop flow, removed 7 redundant places. [2022-11-16 11:24:17,490 INFO L231 Difference]: Finished difference. Result has 419 places, 399 transitions, 1237 flow [2022-11-16 11:24:17,491 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=1199, PETRI_DIFFERENCE_MINUEND_PLACES=414, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=396, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=389, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1237, PETRI_PLACES=419, PETRI_TRANSITIONS=399} [2022-11-16 11:24:17,491 INFO L288 CegarLoopForPetriNet]: 374 programPoint places, 45 predicate places. [2022-11-16 11:24:17,491 INFO L495 AbstractCegarLoop]: Abstraction has has 419 places, 399 transitions, 1237 flow [2022-11-16 11:24:17,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 349.0) internal successors, (1396), 4 states have internal predecessors, (1396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:17,492 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:24:17,492 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:24:17,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-16 11:24:17,492 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-16 11:24:17,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:24:17,493 INFO L85 PathProgramCache]: Analyzing trace with hash 359150405, now seen corresponding path program 1 times [2022-11-16 11:24:17,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:24:17,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809394419] [2022-11-16 11:24:17,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:24:17,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:24:17,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:17,615 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 11:24:17,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:24:17,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809394419] [2022-11-16 11:24:17,616 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809394419] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:24:17,616 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:24:17,616 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:24:17,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063398947] [2022-11-16 11:24:17,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:24:17,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:24:17,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:24:17,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:24:17,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:24:17,619 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 326 out of 412 [2022-11-16 11:24:17,621 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 419 places, 399 transitions, 1237 flow. Second operand has 6 states, 6 states have (on average 329.5) internal successors, (1977), 6 states have internal predecessors, (1977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:17,621 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:24:17,621 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 326 of 412 [2022-11-16 11:24:17,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:24:19,023 INFO L130 PetriNetUnfolder]: 470/1922 cut-off events. [2022-11-16 11:24:19,023 INFO L131 PetriNetUnfolder]: For 643/985 co-relation queries the response was YES. [2022-11-16 11:24:19,064 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3797 conditions, 1922 events. 470/1922 cut-off events. For 643/985 co-relation queries the response was YES. Maximal size of possible extension queue 353. Compared 18768 event pairs, 244 based on Foata normal form. 5/1513 useless extension candidates. Maximal degree in co-relation 3611. Up to 566 conditions per place. [2022-11-16 11:24:19,089 INFO L137 encePairwiseOnDemand]: 395/412 looper letters, 74 selfloop transitions, 17 changer transitions 0/419 dead transitions. [2022-11-16 11:24:19,089 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 424 places, 419 transitions, 1473 flow [2022-11-16 11:24:19,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 11:24:19,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 11:24:19,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2372 transitions. [2022-11-16 11:24:19,092 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8224687933425797 [2022-11-16 11:24:19,093 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2372 transitions. [2022-11-16 11:24:19,093 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2372 transitions. [2022-11-16 11:24:19,094 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:24:19,094 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2372 transitions. [2022-11-16 11:24:19,097 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 338.85714285714283) internal successors, (2372), 7 states have internal predecessors, (2372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:19,100 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 412.0) internal successors, (3296), 8 states have internal predecessors, (3296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:19,101 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 412.0) internal successors, (3296), 8 states have internal predecessors, (3296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:19,101 INFO L175 Difference]: Start difference. First operand has 419 places, 399 transitions, 1237 flow. Second operand 7 states and 2372 transitions. [2022-11-16 11:24:19,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 424 places, 419 transitions, 1473 flow [2022-11-16 11:24:19,108 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 422 places, 419 transitions, 1465 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 11:24:19,113 INFO L231 Difference]: Finished difference. Result has 427 places, 407 transitions, 1328 flow [2022-11-16 11:24:19,114 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=1225, PETRI_DIFFERENCE_MINUEND_PLACES=416, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=398, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=381, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1328, PETRI_PLACES=427, PETRI_TRANSITIONS=407} [2022-11-16 11:24:19,114 INFO L288 CegarLoopForPetriNet]: 374 programPoint places, 53 predicate places. [2022-11-16 11:24:19,114 INFO L495 AbstractCegarLoop]: Abstraction has has 427 places, 407 transitions, 1328 flow [2022-11-16 11:24:19,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 329.5) internal successors, (1977), 6 states have internal predecessors, (1977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:19,115 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:24:19,115 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:24:19,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-16 11:24:19,116 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-16 11:24:19,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:24:19,116 INFO L85 PathProgramCache]: Analyzing trace with hash -1024208014, now seen corresponding path program 1 times [2022-11-16 11:24:19,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:24:19,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541401754] [2022-11-16 11:24:19,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:24:19,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:24:19,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:19,271 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 11:24:19,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:24:19,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541401754] [2022-11-16 11:24:19,271 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541401754] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:24:19,272 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:24:19,272 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:24:19,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691750203] [2022-11-16 11:24:19,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:24:19,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:24:19,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:24:19,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:24:19,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:24:19,278 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 326 out of 412 [2022-11-16 11:24:19,280 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 427 places, 407 transitions, 1328 flow. Second operand has 6 states, 6 states have (on average 329.6666666666667) internal successors, (1978), 6 states have internal predecessors, (1978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:19,280 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:24:19,280 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 326 of 412 [2022-11-16 11:24:19,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:24:20,531 INFO L130 PetriNetUnfolder]: 438/1892 cut-off events. [2022-11-16 11:24:20,531 INFO L131 PetriNetUnfolder]: For 925/1244 co-relation queries the response was YES. [2022-11-16 11:24:20,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3992 conditions, 1892 events. 438/1892 cut-off events. For 925/1244 co-relation queries the response was YES. Maximal size of possible extension queue 329. Compared 18178 event pairs, 225 based on Foata normal form. 5/1568 useless extension candidates. Maximal degree in co-relation 3806. Up to 476 conditions per place. [2022-11-16 11:24:20,593 INFO L137 encePairwiseOnDemand]: 394/412 looper letters, 94 selfloop transitions, 20 changer transitions 0/442 dead transitions. [2022-11-16 11:24:20,593 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 432 places, 442 transitions, 1685 flow [2022-11-16 11:24:20,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 11:24:20,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 11:24:20,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2386 transitions. [2022-11-16 11:24:20,596 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8273231622746186 [2022-11-16 11:24:20,596 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2386 transitions. [2022-11-16 11:24:20,596 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2386 transitions. [2022-11-16 11:24:20,597 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:24:20,597 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2386 transitions. [2022-11-16 11:24:20,600 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 340.85714285714283) internal successors, (2386), 7 states have internal predecessors, (2386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:20,603 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 412.0) internal successors, (3296), 8 states have internal predecessors, (3296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:20,604 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 412.0) internal successors, (3296), 8 states have internal predecessors, (3296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:20,604 INFO L175 Difference]: Start difference. First operand has 427 places, 407 transitions, 1328 flow. Second operand 7 states and 2386 transitions. [2022-11-16 11:24:20,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 432 places, 442 transitions, 1685 flow [2022-11-16 11:24:20,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 430 places, 442 transitions, 1673 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 11:24:20,618 INFO L231 Difference]: Finished difference. Result has 435 places, 418 transitions, 1454 flow [2022-11-16 11:24:20,618 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=1314, PETRI_DIFFERENCE_MINUEND_PLACES=424, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=406, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=386, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1454, PETRI_PLACES=435, PETRI_TRANSITIONS=418} [2022-11-16 11:24:20,619 INFO L288 CegarLoopForPetriNet]: 374 programPoint places, 61 predicate places. [2022-11-16 11:24:20,619 INFO L495 AbstractCegarLoop]: Abstraction has has 435 places, 418 transitions, 1454 flow [2022-11-16 11:24:20,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 329.6666666666667) internal successors, (1978), 6 states have internal predecessors, (1978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:20,620 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:24:20,620 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 11:24:20,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-16 11:24:20,620 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-16 11:24:20,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:24:20,621 INFO L85 PathProgramCache]: Analyzing trace with hash -2097140865, now seen corresponding path program 1 times [2022-11-16 11:24:20,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:24:20,621 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482572679] [2022-11-16 11:24:20,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:24:20,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:24:20,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:20,747 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 11:24:20,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:24:20,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482572679] [2022-11-16 11:24:20,747 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482572679] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:24:20,747 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:24:20,748 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 11:24:20,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213652908] [2022-11-16 11:24:20,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:24:20,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 11:24:20,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:24:20,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 11:24:20,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:24:20,752 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 336 out of 412 [2022-11-16 11:24:20,754 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 435 places, 418 transitions, 1454 flow. Second operand has 8 states, 8 states have (on average 338.25) internal successors, (2706), 8 states have internal predecessors, (2706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:20,754 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:24:20,754 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 336 of 412 [2022-11-16 11:24:20,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:24:23,000 INFO L130 PetriNetUnfolder]: 1054/5033 cut-off events. [2022-11-16 11:24:23,000 INFO L131 PetriNetUnfolder]: For 1791/1791 co-relation queries the response was YES. [2022-11-16 11:24:23,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8587 conditions, 5033 events. 1054/5033 cut-off events. For 1791/1791 co-relation queries the response was YES. Maximal size of possible extension queue 720. Compared 56368 event pairs, 469 based on Foata normal form. 0/4041 useless extension candidates. Maximal degree in co-relation 7931. Up to 711 conditions per place. [2022-11-16 11:24:23,076 INFO L137 encePairwiseOnDemand]: 397/412 looper letters, 67 selfloop transitions, 16 changer transitions 0/442 dead transitions. [2022-11-16 11:24:23,076 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 445 places, 442 transitions, 1682 flow [2022-11-16 11:24:23,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 11:24:23,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-16 11:24:23,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 3778 transitions. [2022-11-16 11:24:23,081 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8336275375110327 [2022-11-16 11:24:23,081 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 3778 transitions. [2022-11-16 11:24:23,081 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 3778 transitions. [2022-11-16 11:24:23,082 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:24:23,083 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 3778 transitions. [2022-11-16 11:24:23,088 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 343.45454545454544) internal successors, (3778), 11 states have internal predecessors, (3778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:23,092 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 412.0) internal successors, (4944), 12 states have internal predecessors, (4944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:23,094 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 412.0) internal successors, (4944), 12 states have internal predecessors, (4944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:23,094 INFO L175 Difference]: Start difference. First operand has 435 places, 418 transitions, 1454 flow. Second operand 11 states and 3778 transitions. [2022-11-16 11:24:23,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 445 places, 442 transitions, 1682 flow [2022-11-16 11:24:23,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 444 places, 442 transitions, 1674 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:24:23,110 INFO L231 Difference]: Finished difference. Result has 446 places, 419 transitions, 1491 flow [2022-11-16 11:24:23,111 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=1446, PETRI_DIFFERENCE_MINUEND_PLACES=434, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=418, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=402, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1491, PETRI_PLACES=446, PETRI_TRANSITIONS=419} [2022-11-16 11:24:23,111 INFO L288 CegarLoopForPetriNet]: 374 programPoint places, 72 predicate places. [2022-11-16 11:24:23,111 INFO L495 AbstractCegarLoop]: Abstraction has has 446 places, 419 transitions, 1491 flow [2022-11-16 11:24:23,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 338.25) internal successors, (2706), 8 states have internal predecessors, (2706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:23,112 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:24:23,112 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:24:23,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-16 11:24:23,113 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-16 11:24:23,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:24:23,113 INFO L85 PathProgramCache]: Analyzing trace with hash -586856170, now seen corresponding path program 1 times [2022-11-16 11:24:23,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:24:23,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692654900] [2022-11-16 11:24:23,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:24:23,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:24:23,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:23,243 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 11:24:23,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:24:23,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692654900] [2022-11-16 11:24:23,244 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692654900] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:24:23,244 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:24:23,244 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 11:24:23,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384610368] [2022-11-16 11:24:23,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:24:23,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 11:24:23,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:24:23,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 11:24:23,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:24:23,247 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 336 out of 412 [2022-11-16 11:24:23,250 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 446 places, 419 transitions, 1491 flow. Second operand has 8 states, 8 states have (on average 338.375) internal successors, (2707), 8 states have internal predecessors, (2707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:23,250 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:24:23,250 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 336 of 412 [2022-11-16 11:24:23,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:24:25,427 INFO L130 PetriNetUnfolder]: 924/4821 cut-off events. [2022-11-16 11:24:25,427 INFO L131 PetriNetUnfolder]: For 2037/2046 co-relation queries the response was YES. [2022-11-16 11:24:25,491 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8429 conditions, 4821 events. 924/4821 cut-off events. For 2037/2046 co-relation queries the response was YES. Maximal size of possible extension queue 630. Compared 52723 event pairs, 460 based on Foata normal form. 9/4030 useless extension candidates. Maximal degree in co-relation 7769. Up to 621 conditions per place. [2022-11-16 11:24:25,520 INFO L137 encePairwiseOnDemand]: 396/412 looper letters, 69 selfloop transitions, 17 changer transitions 0/445 dead transitions. [2022-11-16 11:24:25,520 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 456 places, 445 transitions, 1736 flow [2022-11-16 11:24:25,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 11:24:25,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-16 11:24:25,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 3780 transitions. [2022-11-16 11:24:25,526 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8340688437775816 [2022-11-16 11:24:25,526 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 3780 transitions. [2022-11-16 11:24:25,527 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 3780 transitions. [2022-11-16 11:24:25,527 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:24:25,528 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 3780 transitions. [2022-11-16 11:24:25,533 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 343.6363636363636) internal successors, (3780), 11 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:25,539 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 412.0) internal successors, (4944), 12 states have internal predecessors, (4944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:25,540 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 412.0) internal successors, (4944), 12 states have internal predecessors, (4944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:25,540 INFO L175 Difference]: Start difference. First operand has 446 places, 419 transitions, 1491 flow. Second operand 11 states and 3780 transitions. [2022-11-16 11:24:25,540 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 456 places, 445 transitions, 1736 flow [2022-11-16 11:24:25,555 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 450 places, 445 transitions, 1712 flow, removed 1 selfloop flow, removed 6 redundant places. [2022-11-16 11:24:25,561 INFO L231 Difference]: Finished difference. Result has 452 places, 420 transitions, 1514 flow [2022-11-16 11:24:25,562 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=1467, PETRI_DIFFERENCE_MINUEND_PLACES=440, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=419, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=402, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1514, PETRI_PLACES=452, PETRI_TRANSITIONS=420} [2022-11-16 11:24:25,563 INFO L288 CegarLoopForPetriNet]: 374 programPoint places, 78 predicate places. [2022-11-16 11:24:25,563 INFO L495 AbstractCegarLoop]: Abstraction has has 452 places, 420 transitions, 1514 flow [2022-11-16 11:24:25,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 338.375) internal successors, (2707), 8 states have internal predecessors, (2707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:25,564 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:24:25,564 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 11:24:25,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-11-16 11:24:25,564 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-16 11:24:25,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:24:25,565 INFO L85 PathProgramCache]: Analyzing trace with hash -1555077574, now seen corresponding path program 1 times [2022-11-16 11:24:25,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:24:25,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709450124] [2022-11-16 11:24:25,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:24:25,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:24:25,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:25,695 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 11:24:25,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:24:25,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709450124] [2022-11-16 11:24:25,696 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709450124] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:24:25,696 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:24:25,697 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:24:25,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945820311] [2022-11-16 11:24:25,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:24:25,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:24:25,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:24:25,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:24:25,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:24:25,701 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 326 out of 412 [2022-11-16 11:24:25,703 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 452 places, 420 transitions, 1514 flow. Second operand has 6 states, 6 states have (on average 329.6666666666667) internal successors, (1978), 6 states have internal predecessors, (1978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:25,703 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:24:25,703 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 326 of 412 [2022-11-16 11:24:25,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:24:27,628 INFO L130 PetriNetUnfolder]: 1398/4938 cut-off events. [2022-11-16 11:24:27,628 INFO L131 PetriNetUnfolder]: For 2357/2363 co-relation queries the response was YES. [2022-11-16 11:24:27,691 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9192 conditions, 4938 events. 1398/4938 cut-off events. For 2357/2363 co-relation queries the response was YES. Maximal size of possible extension queue 1044. Compared 62402 event pairs, 813 based on Foata normal form. 26/3788 useless extension candidates. Maximal degree in co-relation 9069. Up to 1567 conditions per place. [2022-11-16 11:24:27,717 INFO L137 encePairwiseOnDemand]: 395/412 looper letters, 73 selfloop transitions, 17 changer transitions 1/440 dead transitions. [2022-11-16 11:24:27,717 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 457 places, 440 transitions, 1745 flow [2022-11-16 11:24:27,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 11:24:27,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 11:24:27,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2372 transitions. [2022-11-16 11:24:27,721 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8224687933425797 [2022-11-16 11:24:27,721 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2372 transitions. [2022-11-16 11:24:27,722 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2372 transitions. [2022-11-16 11:24:27,722 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:24:27,722 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2372 transitions. [2022-11-16 11:24:27,726 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 338.85714285714283) internal successors, (2372), 7 states have internal predecessors, (2372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:27,729 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 412.0) internal successors, (3296), 8 states have internal predecessors, (3296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:27,730 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 412.0) internal successors, (3296), 8 states have internal predecessors, (3296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:27,730 INFO L175 Difference]: Start difference. First operand has 452 places, 420 transitions, 1514 flow. Second operand 7 states and 2372 transitions. [2022-11-16 11:24:27,730 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 457 places, 440 transitions, 1745 flow [2022-11-16 11:24:27,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 450 places, 440 transitions, 1717 flow, removed 1 selfloop flow, removed 7 redundant places. [2022-11-16 11:24:27,751 INFO L231 Difference]: Finished difference. Result has 455 places, 428 transitions, 1585 flow [2022-11-16 11:24:27,752 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=1482, PETRI_DIFFERENCE_MINUEND_PLACES=444, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=419, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=402, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1585, PETRI_PLACES=455, PETRI_TRANSITIONS=428} [2022-11-16 11:24:27,752 INFO L288 CegarLoopForPetriNet]: 374 programPoint places, 81 predicate places. [2022-11-16 11:24:27,752 INFO L495 AbstractCegarLoop]: Abstraction has has 455 places, 428 transitions, 1585 flow [2022-11-16 11:24:27,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 329.6666666666667) internal successors, (1978), 6 states have internal predecessors, (1978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:27,753 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:24:27,753 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:24:27,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-11-16 11:24:27,754 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-16 11:24:27,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:24:27,754 INFO L85 PathProgramCache]: Analyzing trace with hash 1515114197, now seen corresponding path program 1 times [2022-11-16 11:24:27,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:24:27,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157184890] [2022-11-16 11:24:27,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:24:27,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:24:27,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:28,017 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 11:24:28,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:24:28,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157184890] [2022-11-16 11:24:28,017 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157184890] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:24:28,018 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:24:28,018 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:24:28,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124435339] [2022-11-16 11:24:28,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:24:28,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:24:28,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:24:28,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:24:28,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:24:28,021 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 346 out of 412 [2022-11-16 11:24:28,023 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 455 places, 428 transitions, 1585 flow. Second operand has 6 states, 6 states have (on average 349.1666666666667) internal successors, (2095), 6 states have internal predecessors, (2095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:28,023 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:24:28,023 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 346 of 412 [2022-11-16 11:24:28,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:24:29,687 INFO L130 PetriNetUnfolder]: 279/3218 cut-off events. [2022-11-16 11:24:29,687 INFO L131 PetriNetUnfolder]: For 1500/1779 co-relation queries the response was YES. [2022-11-16 11:24:29,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6586 conditions, 3218 events. 279/3218 cut-off events. For 1500/1779 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 29351 event pairs, 76 based on Foata normal form. 6/3182 useless extension candidates. Maximal degree in co-relation 6331. Up to 268 conditions per place. [2022-11-16 11:24:29,798 INFO L137 encePairwiseOnDemand]: 404/412 looper letters, 53 selfloop transitions, 8 changer transitions 0/439 dead transitions. [2022-11-16 11:24:29,799 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 460 places, 439 transitions, 1743 flow [2022-11-16 11:24:29,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 11:24:29,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 11:24:29,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2479 transitions. [2022-11-16 11:24:29,808 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8595700416088765 [2022-11-16 11:24:29,808 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2479 transitions. [2022-11-16 11:24:29,809 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2479 transitions. [2022-11-16 11:24:29,810 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:24:29,810 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2479 transitions. [2022-11-16 11:24:29,816 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 354.14285714285717) internal successors, (2479), 7 states have internal predecessors, (2479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:29,820 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 412.0) internal successors, (3296), 8 states have internal predecessors, (3296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:29,821 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 412.0) internal successors, (3296), 8 states have internal predecessors, (3296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:29,822 INFO L175 Difference]: Start difference. First operand has 455 places, 428 transitions, 1585 flow. Second operand 7 states and 2479 transitions. [2022-11-16 11:24:29,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 460 places, 439 transitions, 1743 flow [2022-11-16 11:24:29,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 459 places, 439 transitions, 1736 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:24:29,853 INFO L231 Difference]: Finished difference. Result has 459 places, 428 transitions, 1594 flow [2022-11-16 11:24:29,853 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=1576, PETRI_DIFFERENCE_MINUEND_PLACES=453, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=427, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=420, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1594, PETRI_PLACES=459, PETRI_TRANSITIONS=428} [2022-11-16 11:24:29,854 INFO L288 CegarLoopForPetriNet]: 374 programPoint places, 85 predicate places. [2022-11-16 11:24:29,854 INFO L495 AbstractCegarLoop]: Abstraction has has 459 places, 428 transitions, 1594 flow [2022-11-16 11:24:29,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 349.1666666666667) internal successors, (2095), 6 states have internal predecessors, (2095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:29,855 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:24:29,855 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:24:29,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-11-16 11:24:29,856 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-16 11:24:29,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:24:29,857 INFO L85 PathProgramCache]: Analyzing trace with hash -235733116, now seen corresponding path program 1 times [2022-11-16 11:24:29,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:24:29,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148823721] [2022-11-16 11:24:29,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:24:29,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:24:29,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:30,017 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 11:24:30,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:24:30,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148823721] [2022-11-16 11:24:30,018 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [148823721] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:24:30,018 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:24:30,018 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:24:30,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359273635] [2022-11-16 11:24:30,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:24:30,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:24:30,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:24:30,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:24:30,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:24:30,023 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 326 out of 412 [2022-11-16 11:24:30,026 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 459 places, 428 transitions, 1594 flow. Second operand has 6 states, 6 states have (on average 329.8333333333333) internal successors, (1979), 6 states have internal predecessors, (1979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:30,026 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:24:30,027 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 326 of 412 [2022-11-16 11:24:30,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:24:32,254 INFO L130 PetriNetUnfolder]: 1302/4383 cut-off events. [2022-11-16 11:24:32,254 INFO L131 PetriNetUnfolder]: For 2599/2605 co-relation queries the response was YES. [2022-11-16 11:24:32,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9120 conditions, 4383 events. 1302/4383 cut-off events. For 2599/2605 co-relation queries the response was YES. Maximal size of possible extension queue 972. Compared 57466 event pairs, 612 based on Foata normal form. 13/3417 useless extension candidates. Maximal degree in co-relation 8993. Up to 1317 conditions per place. [2022-11-16 11:24:32,328 INFO L137 encePairwiseOnDemand]: 394/412 looper letters, 93 selfloop transitions, 20 changer transitions 1/463 dead transitions. [2022-11-16 11:24:32,328 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 464 places, 463 transitions, 1944 flow [2022-11-16 11:24:32,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 11:24:32,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 11:24:32,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2386 transitions. [2022-11-16 11:24:32,331 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8273231622746186 [2022-11-16 11:24:32,331 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2386 transitions. [2022-11-16 11:24:32,332 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2386 transitions. [2022-11-16 11:24:32,332 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:24:32,333 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2386 transitions. [2022-11-16 11:24:32,336 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 340.85714285714283) internal successors, (2386), 7 states have internal predecessors, (2386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:32,339 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 412.0) internal successors, (3296), 8 states have internal predecessors, (3296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:32,340 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 412.0) internal successors, (3296), 8 states have internal predecessors, (3296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:32,340 INFO L175 Difference]: Start difference. First operand has 459 places, 428 transitions, 1594 flow. Second operand 7 states and 2386 transitions. [2022-11-16 11:24:32,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 464 places, 463 transitions, 1944 flow [2022-11-16 11:24:32,361 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 460 places, 463 transitions, 1935 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-16 11:24:32,368 INFO L231 Difference]: Finished difference. Result has 465 places, 439 transitions, 1721 flow [2022-11-16 11:24:32,369 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=1581, PETRI_DIFFERENCE_MINUEND_PLACES=454, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=427, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=407, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1721, PETRI_PLACES=465, PETRI_TRANSITIONS=439} [2022-11-16 11:24:32,370 INFO L288 CegarLoopForPetriNet]: 374 programPoint places, 91 predicate places. [2022-11-16 11:24:32,370 INFO L495 AbstractCegarLoop]: Abstraction has has 465 places, 439 transitions, 1721 flow [2022-11-16 11:24:32,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 329.8333333333333) internal successors, (1979), 6 states have internal predecessors, (1979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:32,371 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:24:32,371 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:24:32,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-11-16 11:24:32,372 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-16 11:24:32,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:24:32,372 INFO L85 PathProgramCache]: Analyzing trace with hash -300684201, now seen corresponding path program 1 times [2022-11-16 11:24:32,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:24:32,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120514761] [2022-11-16 11:24:32,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:24:32,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:24:32,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:32,470 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 11:24:32,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:24:32,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120514761] [2022-11-16 11:24:32,471 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120514761] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:24:32,471 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:24:32,471 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:24:32,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021952041] [2022-11-16 11:24:32,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:24:32,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:24:32,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:24:32,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:24:32,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:24:32,475 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 346 out of 412 [2022-11-16 11:24:32,477 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 465 places, 439 transitions, 1721 flow. Second operand has 6 states, 6 states have (on average 349.3333333333333) internal successors, (2096), 6 states have internal predecessors, (2096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:32,477 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:24:32,477 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 346 of 412 [2022-11-16 11:24:32,478 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:24:36,953 INFO L130 PetriNetUnfolder]: 1433/11339 cut-off events. [2022-11-16 11:24:36,954 INFO L131 PetriNetUnfolder]: For 6994/7142 co-relation queries the response was YES. [2022-11-16 11:24:37,065 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23174 conditions, 11339 events. 1433/11339 cut-off events. For 6994/7142 co-relation queries the response was YES. Maximal size of possible extension queue 568. Compared 152696 event pairs, 513 based on Foata normal form. 0/10295 useless extension candidates. Maximal degree in co-relation 22882. Up to 1113 conditions per place. [2022-11-16 11:24:37,109 INFO L137 encePairwiseOnDemand]: 404/412 looper letters, 53 selfloop transitions, 8 changer transitions 0/450 dead transitions. [2022-11-16 11:24:37,109 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 470 places, 450 transitions, 1879 flow [2022-11-16 11:24:37,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 11:24:37,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 11:24:37,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2479 transitions. [2022-11-16 11:24:37,112 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8595700416088765 [2022-11-16 11:24:37,113 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2479 transitions. [2022-11-16 11:24:37,113 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2479 transitions. [2022-11-16 11:24:37,114 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:24:37,114 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2479 transitions. [2022-11-16 11:24:37,117 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 354.14285714285717) internal successors, (2479), 7 states have internal predecessors, (2479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:37,120 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 412.0) internal successors, (3296), 8 states have internal predecessors, (3296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:37,121 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 412.0) internal successors, (3296), 8 states have internal predecessors, (3296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:37,122 INFO L175 Difference]: Start difference. First operand has 465 places, 439 transitions, 1721 flow. Second operand 7 states and 2479 transitions. [2022-11-16 11:24:37,122 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 470 places, 450 transitions, 1879 flow [2022-11-16 11:24:37,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 469 places, 450 transitions, 1871 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:24:37,238 INFO L231 Difference]: Finished difference. Result has 469 places, 439 transitions, 1729 flow [2022-11-16 11:24:37,239 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=1711, PETRI_DIFFERENCE_MINUEND_PLACES=463, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=438, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=431, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1729, PETRI_PLACES=469, PETRI_TRANSITIONS=439} [2022-11-16 11:24:37,240 INFO L288 CegarLoopForPetriNet]: 374 programPoint places, 95 predicate places. [2022-11-16 11:24:37,240 INFO L495 AbstractCegarLoop]: Abstraction has has 469 places, 439 transitions, 1729 flow [2022-11-16 11:24:37,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 349.3333333333333) internal successors, (2096), 6 states have internal predecessors, (2096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:37,241 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:24:37,241 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:24:37,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-11-16 11:24:37,241 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-16 11:24:37,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:24:37,242 INFO L85 PathProgramCache]: Analyzing trace with hash -938614369, now seen corresponding path program 1 times [2022-11-16 11:24:37,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:24:37,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098490998] [2022-11-16 11:24:37,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:24:37,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:24:37,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:37,329 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 11:24:37,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:24:37,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098490998] [2022-11-16 11:24:37,330 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098490998] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:24:37,330 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:24:37,330 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:24:37,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842480486] [2022-11-16 11:24:37,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:24:37,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:24:37,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:24:37,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:24:37,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:24:37,334 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 346 out of 412 [2022-11-16 11:24:37,336 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 469 places, 439 transitions, 1729 flow. Second operand has 6 states, 6 states have (on average 349.5) internal successors, (2097), 6 states have internal predecessors, (2097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:37,336 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:24:37,336 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 346 of 412 [2022-11-16 11:24:37,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:24:39,318 INFO L130 PetriNetUnfolder]: 276/3387 cut-off events. [2022-11-16 11:24:39,319 INFO L131 PetriNetUnfolder]: For 1736/2006 co-relation queries the response was YES. [2022-11-16 11:24:39,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7040 conditions, 3387 events. 276/3387 cut-off events. For 1736/2006 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 31350 event pairs, 106 based on Foata normal form. 6/3367 useless extension candidates. Maximal degree in co-relation 6754. Up to 248 conditions per place. [2022-11-16 11:24:39,430 INFO L137 encePairwiseOnDemand]: 406/412 looper letters, 49 selfloop transitions, 6 changer transitions 0/444 dead transitions. [2022-11-16 11:24:39,430 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 473 places, 444 transitions, 1855 flow [2022-11-16 11:24:39,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 11:24:39,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-16 11:24:39,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2124 transitions. [2022-11-16 11:24:39,433 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8592233009708737 [2022-11-16 11:24:39,434 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2124 transitions. [2022-11-16 11:24:39,434 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2124 transitions. [2022-11-16 11:24:39,434 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:24:39,434 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2124 transitions. [2022-11-16 11:24:39,437 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 354.0) internal successors, (2124), 6 states have internal predecessors, (2124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:39,439 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 412.0) internal successors, (2884), 7 states have internal predecessors, (2884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:39,440 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 412.0) internal successors, (2884), 7 states have internal predecessors, (2884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:39,440 INFO L175 Difference]: Start difference. First operand has 469 places, 439 transitions, 1729 flow. Second operand 6 states and 2124 transitions. [2022-11-16 11:24:39,440 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 473 places, 444 transitions, 1855 flow [2022-11-16 11:24:39,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 470 places, 444 transitions, 1849 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 11:24:39,470 INFO L231 Difference]: Finished difference. Result has 470 places, 438 transitions, 1733 flow [2022-11-16 11:24:39,471 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=1721, PETRI_DIFFERENCE_MINUEND_PLACES=465, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=438, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=432, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1733, PETRI_PLACES=470, PETRI_TRANSITIONS=438} [2022-11-16 11:24:39,471 INFO L288 CegarLoopForPetriNet]: 374 programPoint places, 96 predicate places. [2022-11-16 11:24:39,471 INFO L495 AbstractCegarLoop]: Abstraction has has 470 places, 438 transitions, 1733 flow [2022-11-16 11:24:39,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 349.5) internal successors, (2097), 6 states have internal predecessors, (2097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:39,472 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:24:39,472 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:24:39,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-11-16 11:24:39,473 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting thread3Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-16 11:24:39,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:24:39,473 INFO L85 PathProgramCache]: Analyzing trace with hash -1672211799, now seen corresponding path program 1 times [2022-11-16 11:24:39,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:24:39,474 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104362023] [2022-11-16 11:24:39,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:24:39,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:24:39,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:39,635 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 11:24:39,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:24:39,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104362023] [2022-11-16 11:24:39,636 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2104362023] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:24:39,636 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:24:39,636 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:24:39,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568148265] [2022-11-16 11:24:39,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:24:39,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:24:39,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:24:39,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:24:39,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:24:39,641 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 346 out of 412 [2022-11-16 11:24:39,655 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 470 places, 438 transitions, 1733 flow. Second operand has 6 states, 6 states have (on average 349.5) internal successors, (2097), 6 states have internal predecessors, (2097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:39,666 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:24:39,667 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 346 of 412 [2022-11-16 11:24:39,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:24:42,527 INFO L130 PetriNetUnfolder]: 1683/7020 cut-off events. [2022-11-16 11:24:42,527 INFO L131 PetriNetUnfolder]: For 4998/6270 co-relation queries the response was YES. [2022-11-16 11:24:42,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14935 conditions, 7020 events. 1683/7020 cut-off events. For 4998/6270 co-relation queries the response was YES. Maximal size of possible extension queue 568. Compared 82462 event pairs, 528 based on Foata normal form. 6/6006 useless extension candidates. Maximal degree in co-relation 14635. Up to 1450 conditions per place. [2022-11-16 11:24:42,660 INFO L137 encePairwiseOnDemand]: 404/412 looper letters, 57 selfloop transitions, 8 changer transitions 0/452 dead transitions. [2022-11-16 11:24:42,661 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 475 places, 452 transitions, 1911 flow [2022-11-16 11:24:42,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 11:24:42,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 11:24:42,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2479 transitions. [2022-11-16 11:24:42,665 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8595700416088765 [2022-11-16 11:24:42,665 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2479 transitions. [2022-11-16 11:24:42,665 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2479 transitions. [2022-11-16 11:24:42,666 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:24:42,666 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2479 transitions. [2022-11-16 11:24:42,669 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 354.14285714285717) internal successors, (2479), 7 states have internal predecessors, (2479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:42,673 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 412.0) internal successors, (3296), 8 states have internal predecessors, (3296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:42,674 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 412.0) internal successors, (3296), 8 states have internal predecessors, (3296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:42,674 INFO L175 Difference]: Start difference. First operand has 470 places, 438 transitions, 1733 flow. Second operand 7 states and 2479 transitions. [2022-11-16 11:24:42,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 475 places, 452 transitions, 1911 flow [2022-11-16 11:24:42,733 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 471 places, 452 transitions, 1900 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-16 11:24:42,740 INFO L231 Difference]: Finished difference. Result has 471 places, 438 transitions, 1738 flow [2022-11-16 11:24:42,741 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=1720, PETRI_DIFFERENCE_MINUEND_PLACES=465, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=437, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=430, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1738, PETRI_PLACES=471, PETRI_TRANSITIONS=438} [2022-11-16 11:24:42,742 INFO L288 CegarLoopForPetriNet]: 374 programPoint places, 97 predicate places. [2022-11-16 11:24:42,742 INFO L495 AbstractCegarLoop]: Abstraction has has 471 places, 438 transitions, 1738 flow [2022-11-16 11:24:42,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 349.5) internal successors, (2097), 6 states have internal predecessors, (2097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:42,743 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:24:42,743 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:24:42,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-11-16 11:24:42,743 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting thread1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-16 11:24:42,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:24:42,744 INFO L85 PathProgramCache]: Analyzing trace with hash 1476131908, now seen corresponding path program 1 times [2022-11-16 11:24:42,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:24:42,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909308128] [2022-11-16 11:24:42,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:24:42,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:24:42,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:42,935 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 11:24:42,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:24:42,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909308128] [2022-11-16 11:24:42,935 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909308128] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:24:42,936 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:24:42,936 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 11:24:42,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390083222] [2022-11-16 11:24:42,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:24:42,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 11:24:42,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:24:42,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 11:24:42,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:24:42,941 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 336 out of 412 [2022-11-16 11:24:42,944 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 471 places, 438 transitions, 1738 flow. Second operand has 8 states, 8 states have (on average 339.5) internal successors, (2716), 8 states have internal predecessors, (2716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:42,945 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:24:42,945 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 336 of 412 [2022-11-16 11:24:42,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:24:45,171 INFO L130 PetriNetUnfolder]: 374/3297 cut-off events. [2022-11-16 11:24:45,171 INFO L131 PetriNetUnfolder]: For 1644/2121 co-relation queries the response was YES. [2022-11-16 11:24:45,264 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7040 conditions, 3297 events. 374/3297 cut-off events. For 1644/2121 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 30495 event pairs, 86 based on Foata normal form. 31/3303 useless extension candidates. Maximal degree in co-relation 6751. Up to 188 conditions per place. [2022-11-16 11:24:45,290 INFO L137 encePairwiseOnDemand]: 398/412 looper letters, 65 selfloop transitions, 17 changer transitions 0/457 dead transitions. [2022-11-16 11:24:45,290 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 480 places, 457 transitions, 1950 flow [2022-11-16 11:24:45,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 11:24:45,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-16 11:24:45,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 3773 transitions. [2022-11-16 11:24:45,297 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8325242718446602 [2022-11-16 11:24:45,297 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 3773 transitions. [2022-11-16 11:24:45,298 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 3773 transitions. [2022-11-16 11:24:45,299 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:24:45,299 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 3773 transitions. [2022-11-16 11:24:45,304 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 343.0) internal successors, (3773), 11 states have internal predecessors, (3773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:45,309 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 412.0) internal successors, (4944), 12 states have internal predecessors, (4944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:45,310 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 412.0) internal successors, (4944), 12 states have internal predecessors, (4944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:45,310 INFO L175 Difference]: Start difference. First operand has 471 places, 438 transitions, 1738 flow. Second operand 11 states and 3773 transitions. [2022-11-16 11:24:45,310 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 480 places, 457 transitions, 1950 flow [2022-11-16 11:24:45,333 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 476 places, 457 transitions, 1937 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-16 11:24:45,339 INFO L231 Difference]: Finished difference. Result has 476 places, 436 transitions, 1744 flow [2022-11-16 11:24:45,340 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=1710, PETRI_DIFFERENCE_MINUEND_PLACES=466, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=436, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=419, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1744, PETRI_PLACES=476, PETRI_TRANSITIONS=436} [2022-11-16 11:24:45,341 INFO L288 CegarLoopForPetriNet]: 374 programPoint places, 102 predicate places. [2022-11-16 11:24:45,341 INFO L495 AbstractCegarLoop]: Abstraction has has 476 places, 436 transitions, 1744 flow [2022-11-16 11:24:45,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 339.5) internal successors, (2716), 8 states have internal predecessors, (2716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:45,342 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:24:45,342 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:24:45,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-11-16 11:24:45,343 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting thread2Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-16 11:24:45,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:24:45,343 INFO L85 PathProgramCache]: Analyzing trace with hash 1759810817, now seen corresponding path program 1 times [2022-11-16 11:24:45,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:24:45,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181033248] [2022-11-16 11:24:45,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:24:45,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:24:45,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:45,444 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 11:24:45,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:24:45,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181033248] [2022-11-16 11:24:45,444 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181033248] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:24:45,445 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:24:45,445 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:24:45,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169573045] [2022-11-16 11:24:45,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:24:45,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:24:45,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:24:45,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:24:45,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:24:45,448 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 346 out of 412 [2022-11-16 11:24:45,450 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 476 places, 436 transitions, 1744 flow. Second operand has 6 states, 6 states have (on average 349.6666666666667) internal successors, (2098), 6 states have internal predecessors, (2098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:45,450 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:24:45,450 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 346 of 412 [2022-11-16 11:24:45,451 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:24:49,143 INFO L130 PetriNetUnfolder]: 1406/10909 cut-off events. [2022-11-16 11:24:49,143 INFO L131 PetriNetUnfolder]: For 7153/7924 co-relation queries the response was YES. [2022-11-16 11:24:49,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22176 conditions, 10909 events. 1406/10909 cut-off events. For 7153/7924 co-relation queries the response was YES. Maximal size of possible extension queue 556. Compared 145878 event pairs, 798 based on Foata normal form. 47/10191 useless extension candidates. Maximal degree in co-relation 21869. Up to 1029 conditions per place. [2022-11-16 11:24:49,341 INFO L137 encePairwiseOnDemand]: 406/412 looper letters, 52 selfloop transitions, 6 changer transitions 0/443 dead transitions. [2022-11-16 11:24:49,341 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 480 places, 443 transitions, 1886 flow [2022-11-16 11:24:49,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 11:24:49,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-16 11:24:49,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2124 transitions. [2022-11-16 11:24:49,344 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8592233009708737 [2022-11-16 11:24:49,345 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2124 transitions. [2022-11-16 11:24:49,345 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2124 transitions. [2022-11-16 11:24:49,346 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:24:49,346 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2124 transitions. [2022-11-16 11:24:49,657 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 354.0) internal successors, (2124), 6 states have internal predecessors, (2124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:49,660 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 412.0) internal successors, (2884), 7 states have internal predecessors, (2884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:49,661 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 412.0) internal successors, (2884), 7 states have internal predecessors, (2884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:49,661 INFO L175 Difference]: Start difference. First operand has 476 places, 436 transitions, 1744 flow. Second operand 6 states and 2124 transitions. [2022-11-16 11:24:49,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 480 places, 443 transitions, 1886 flow [2022-11-16 11:24:49,743 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 471 places, 443 transitions, 1849 flow, removed 1 selfloop flow, removed 9 redundant places. [2022-11-16 11:24:49,751 INFO L231 Difference]: Finished difference. Result has 471 places, 435 transitions, 1717 flow [2022-11-16 11:24:49,751 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=1705, PETRI_DIFFERENCE_MINUEND_PLACES=466, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=435, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=429, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1717, PETRI_PLACES=471, PETRI_TRANSITIONS=435} [2022-11-16 11:24:49,752 INFO L288 CegarLoopForPetriNet]: 374 programPoint places, 97 predicate places. [2022-11-16 11:24:49,752 INFO L495 AbstractCegarLoop]: Abstraction has has 471 places, 435 transitions, 1717 flow [2022-11-16 11:24:49,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 349.6666666666667) internal successors, (2098), 6 states have internal predecessors, (2098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:49,753 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:24:49,754 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:24:49,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-11-16 11:24:49,754 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-16 11:24:49,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:24:49,755 INFO L85 PathProgramCache]: Analyzing trace with hash -1484550059, now seen corresponding path program 1 times [2022-11-16 11:24:49,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:24:49,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117394791] [2022-11-16 11:24:49,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:24:49,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:24:49,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:49,956 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 11:24:49,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:24:49,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117394791] [2022-11-16 11:24:49,957 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117394791] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:24:49,957 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:24:49,958 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 11:24:49,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042333153] [2022-11-16 11:24:49,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:24:49,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 11:24:49,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:24:49,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 11:24:49,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:24:49,963 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 336 out of 412 [2022-11-16 11:24:49,966 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 471 places, 435 transitions, 1717 flow. Second operand has 8 states, 8 states have (on average 339.625) internal successors, (2717), 8 states have internal predecessors, (2717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:49,967 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:24:49,967 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 336 of 412 [2022-11-16 11:24:49,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:24:52,647 INFO L130 PetriNetUnfolder]: 328/3610 cut-off events. [2022-11-16 11:24:52,647 INFO L131 PetriNetUnfolder]: For 1804/2182 co-relation queries the response was YES. [2022-11-16 11:24:52,740 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7560 conditions, 3610 events. 328/3610 cut-off events. For 1804/2182 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 34335 event pairs, 86 based on Foata normal form. 28/3622 useless extension candidates. Maximal degree in co-relation 7274. Up to 209 conditions per place. [2022-11-16 11:24:52,762 INFO L137 encePairwiseOnDemand]: 398/412 looper letters, 66 selfloop transitions, 17 changer transitions 0/457 dead transitions. [2022-11-16 11:24:52,762 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 480 places, 457 transitions, 1951 flow [2022-11-16 11:24:52,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 11:24:52,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-16 11:24:52,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 3774 transitions. [2022-11-16 11:24:52,766 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8327449249779347 [2022-11-16 11:24:52,766 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 3774 transitions. [2022-11-16 11:24:52,766 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 3774 transitions. [2022-11-16 11:24:52,767 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:24:52,767 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 3774 transitions. [2022-11-16 11:24:52,770 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 343.09090909090907) internal successors, (3774), 11 states have internal predecessors, (3774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:52,774 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 412.0) internal successors, (4944), 12 states have internal predecessors, (4944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:52,775 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 412.0) internal successors, (4944), 12 states have internal predecessors, (4944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:52,775 INFO L175 Difference]: Start difference. First operand has 471 places, 435 transitions, 1717 flow. Second operand 11 states and 3774 transitions. [2022-11-16 11:24:52,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 480 places, 457 transitions, 1951 flow [2022-11-16 11:24:52,799 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 475 places, 457 transitions, 1933 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-16 11:24:52,806 INFO L231 Difference]: Finished difference. Result has 475 places, 434 transitions, 1729 flow [2022-11-16 11:24:52,807 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=1695, PETRI_DIFFERENCE_MINUEND_PLACES=465, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=434, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=417, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1729, PETRI_PLACES=475, PETRI_TRANSITIONS=434} [2022-11-16 11:24:52,807 INFO L288 CegarLoopForPetriNet]: 374 programPoint places, 101 predicate places. [2022-11-16 11:24:52,807 INFO L495 AbstractCegarLoop]: Abstraction has has 475 places, 434 transitions, 1729 flow [2022-11-16 11:24:52,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 339.625) internal successors, (2717), 8 states have internal predecessors, (2717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:52,808 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:24:52,808 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:24:52,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-11-16 11:24:52,809 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting thread3Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-16 11:24:52,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:24:52,809 INFO L85 PathProgramCache]: Analyzing trace with hash -1512207053, now seen corresponding path program 1 times [2022-11-16 11:24:52,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:24:52,810 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829274526] [2022-11-16 11:24:52,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:24:52,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:24:52,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:52,925 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 11:24:52,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:24:52,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829274526] [2022-11-16 11:24:52,926 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829274526] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:24:52,926 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:24:52,926 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:24:52,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9712807] [2022-11-16 11:24:52,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:24:52,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:24:52,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:24:52,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:24:52,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:24:52,930 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 346 out of 412 [2022-11-16 11:24:52,931 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 475 places, 434 transitions, 1729 flow. Second operand has 6 states, 6 states have (on average 349.8333333333333) internal successors, (2099), 6 states have internal predecessors, (2099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:52,932 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:24:52,932 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 346 of 412 [2022-11-16 11:24:52,932 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:24:55,441 INFO L130 PetriNetUnfolder]: 1650/6876 cut-off events. [2022-11-16 11:24:55,442 INFO L131 PetriNetUnfolder]: For 5249/6500 co-relation queries the response was YES. [2022-11-16 11:24:55,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14799 conditions, 6876 events. 1650/6876 cut-off events. For 5249/6500 co-relation queries the response was YES. Maximal size of possible extension queue 556. Compared 81316 event pairs, 705 based on Foata normal form. 6/5901 useless extension candidates. Maximal degree in co-relation 14503. Up to 1334 conditions per place. [2022-11-16 11:24:55,563 INFO L137 encePairwiseOnDemand]: 406/412 looper letters, 52 selfloop transitions, 6 changer transitions 0/441 dead transitions. [2022-11-16 11:24:55,564 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 479 places, 441 transitions, 1869 flow [2022-11-16 11:24:55,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 11:24:55,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-16 11:24:55,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2124 transitions. [2022-11-16 11:24:55,568 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8592233009708737 [2022-11-16 11:24:55,568 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2124 transitions. [2022-11-16 11:24:55,568 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2124 transitions. [2022-11-16 11:24:55,569 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:24:55,569 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2124 transitions. [2022-11-16 11:24:55,571 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 354.0) internal successors, (2124), 6 states have internal predecessors, (2124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:55,573 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 412.0) internal successors, (2884), 7 states have internal predecessors, (2884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:55,574 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 412.0) internal successors, (2884), 7 states have internal predecessors, (2884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:55,574 INFO L175 Difference]: Start difference. First operand has 475 places, 434 transitions, 1729 flow. Second operand 6 states and 2124 transitions. [2022-11-16 11:24:55,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 479 places, 441 transitions, 1869 flow [2022-11-16 11:24:55,622 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 470 places, 441 transitions, 1832 flow, removed 1 selfloop flow, removed 9 redundant places. [2022-11-16 11:24:55,627 INFO L231 Difference]: Finished difference. Result has 470 places, 433 transitions, 1702 flow [2022-11-16 11:24:55,628 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=1690, PETRI_DIFFERENCE_MINUEND_PLACES=465, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=433, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=427, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1702, PETRI_PLACES=470, PETRI_TRANSITIONS=433} [2022-11-16 11:24:55,628 INFO L288 CegarLoopForPetriNet]: 374 programPoint places, 96 predicate places. [2022-11-16 11:24:55,628 INFO L495 AbstractCegarLoop]: Abstraction has has 470 places, 433 transitions, 1702 flow [2022-11-16 11:24:55,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 349.8333333333333) internal successors, (2099), 6 states have internal predecessors, (2099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:55,629 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:24:55,629 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:24:55,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-11-16 11:24:55,629 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting thread2Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-16 11:24:55,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:24:55,630 INFO L85 PathProgramCache]: Analyzing trace with hash 1904352454, now seen corresponding path program 1 times [2022-11-16 11:24:55,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:24:55,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652580284] [2022-11-16 11:24:55,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:24:55,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:24:55,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:55,930 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 11:24:55,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:24:55,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652580284] [2022-11-16 11:24:55,931 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652580284] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:24:55,931 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:24:55,931 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 11:24:55,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607377279] [2022-11-16 11:24:55,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:24:55,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 11:24:55,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:24:55,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 11:24:55,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:24:55,936 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 336 out of 412 [2022-11-16 11:24:55,937 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 470 places, 433 transitions, 1702 flow. Second operand has 8 states, 8 states have (on average 339.625) internal successors, (2717), 8 states have internal predecessors, (2717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:55,938 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:24:55,938 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 336 of 412 [2022-11-16 11:24:55,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:25:00,162 INFO L130 PetriNetUnfolder]: 1882/10631 cut-off events. [2022-11-16 11:25:00,162 INFO L131 PetriNetUnfolder]: For 8929/9886 co-relation queries the response was YES. [2022-11-16 11:25:00,275 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23198 conditions, 10631 events. 1882/10631 cut-off events. For 8929/9886 co-relation queries the response was YES. Maximal size of possible extension queue 767. Compared 141303 event pairs, 434 based on Foata normal form. 36/9699 useless extension candidates. Maximal degree in co-relation 22914. Up to 855 conditions per place. [2022-11-16 11:25:00,323 INFO L137 encePairwiseOnDemand]: 398/412 looper letters, 73 selfloop transitions, 17 changer transitions 0/459 dead transitions. [2022-11-16 11:25:00,323 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 479 places, 459 transitions, 1993 flow [2022-11-16 11:25:00,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 11:25:00,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-16 11:25:00,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 3773 transitions. [2022-11-16 11:25:00,328 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8325242718446602 [2022-11-16 11:25:00,329 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 3773 transitions. [2022-11-16 11:25:00,330 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 3773 transitions. [2022-11-16 11:25:00,331 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:25:00,331 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 3773 transitions. [2022-11-16 11:25:00,336 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 343.0) internal successors, (3773), 11 states have internal predecessors, (3773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:25:00,340 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 412.0) internal successors, (4944), 12 states have internal predecessors, (4944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:25:00,341 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 412.0) internal successors, (4944), 12 states have internal predecessors, (4944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:25:00,341 INFO L175 Difference]: Start difference. First operand has 470 places, 433 transitions, 1702 flow. Second operand 11 states and 3773 transitions. [2022-11-16 11:25:00,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 479 places, 459 transitions, 1993 flow [2022-11-16 11:25:00,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 474 places, 459 transitions, 1947 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-16 11:25:00,438 INFO L231 Difference]: Finished difference. Result has 474 places, 431 transitions, 1703 flow [2022-11-16 11:25:00,439 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=1669, PETRI_DIFFERENCE_MINUEND_PLACES=464, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=431, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=414, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1703, PETRI_PLACES=474, PETRI_TRANSITIONS=431} [2022-11-16 11:25:00,440 INFO L288 CegarLoopForPetriNet]: 374 programPoint places, 100 predicate places. [2022-11-16 11:25:00,440 INFO L495 AbstractCegarLoop]: Abstraction has has 474 places, 431 transitions, 1703 flow [2022-11-16 11:25:00,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 339.625) internal successors, (2717), 8 states have internal predecessors, (2717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:25:00,441 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:25:00,441 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:25:00,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-11-16 11:25:00,441 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting thread2Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-16 11:25:00,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:25:00,442 INFO L85 PathProgramCache]: Analyzing trace with hash -1094614918, now seen corresponding path program 1 times [2022-11-16 11:25:00,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:25:00,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374607620] [2022-11-16 11:25:00,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:25:00,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:25:00,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:25:00,593 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 11:25:00,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:25:00,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374607620] [2022-11-16 11:25:00,594 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374607620] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:25:00,594 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:25:00,594 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 11:25:00,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819613081] [2022-11-16 11:25:00,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:25:00,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 11:25:00,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:25:00,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 11:25:00,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:25:00,598 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 336 out of 412 [2022-11-16 11:25:00,600 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 474 places, 431 transitions, 1703 flow. Second operand has 8 states, 8 states have (on average 339.75) internal successors, (2718), 8 states have internal predecessors, (2718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:25:00,600 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:25:00,601 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 336 of 412 [2022-11-16 11:25:00,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:25:05,519 INFO L130 PetriNetUnfolder]: 1688/14176 cut-off events. [2022-11-16 11:25:05,520 INFO L131 PetriNetUnfolder]: For 9411/10231 co-relation queries the response was YES. [2022-11-16 11:25:05,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29415 conditions, 14176 events. 1688/14176 cut-off events. For 9411/10231 co-relation queries the response was YES. Maximal size of possible extension queue 669. Compared 196945 event pairs, 575 based on Foata normal form. 36/13370 useless extension candidates. Maximal degree in co-relation 29132. Up to 1053 conditions per place. [2022-11-16 11:25:06,117 INFO L137 encePairwiseOnDemand]: 398/412 looper letters, 74 selfloop transitions, 17 changer transitions 0/460 dead transitions. [2022-11-16 11:25:06,117 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 483 places, 460 transitions, 1990 flow [2022-11-16 11:25:06,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 11:25:06,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-16 11:25:06,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 3774 transitions. [2022-11-16 11:25:06,123 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8327449249779347 [2022-11-16 11:25:06,124 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 3774 transitions. [2022-11-16 11:25:06,124 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 3774 transitions. [2022-11-16 11:25:06,126 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:25:06,126 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 3774 transitions. [2022-11-16 11:25:06,133 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 343.09090909090907) internal successors, (3774), 11 states have internal predecessors, (3774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:25:06,139 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 412.0) internal successors, (4944), 12 states have internal predecessors, (4944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:25:06,140 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 412.0) internal successors, (4944), 12 states have internal predecessors, (4944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:25:06,140 INFO L175 Difference]: Start difference. First operand has 474 places, 431 transitions, 1703 flow. Second operand 11 states and 3774 transitions. [2022-11-16 11:25:06,140 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 483 places, 460 transitions, 1990 flow [2022-11-16 11:25:06,317 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 473 places, 460 transitions, 1944 flow, removed 1 selfloop flow, removed 10 redundant places. [2022-11-16 11:25:06,323 INFO L231 Difference]: Finished difference. Result has 473 places, 430 transitions, 1689 flow [2022-11-16 11:25:06,324 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=1655, PETRI_DIFFERENCE_MINUEND_PLACES=463, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=430, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=413, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1689, PETRI_PLACES=473, PETRI_TRANSITIONS=430} [2022-11-16 11:25:06,324 INFO L288 CegarLoopForPetriNet]: 374 programPoint places, 99 predicate places. [2022-11-16 11:25:06,324 INFO L495 AbstractCegarLoop]: Abstraction has has 473 places, 430 transitions, 1689 flow [2022-11-16 11:25:06,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 339.75) internal successors, (2718), 8 states have internal predecessors, (2718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:25:06,325 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:25:06,325 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:25:06,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-11-16 11:25:06,326 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting thread3Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-16 11:25:06,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:25:06,326 INFO L85 PathProgramCache]: Analyzing trace with hash 678929944, now seen corresponding path program 1 times [2022-11-16 11:25:06,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:25:06,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688442776] [2022-11-16 11:25:06,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:25:06,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:25:06,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:25:06,505 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 11:25:06,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:25:06,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688442776] [2022-11-16 11:25:06,506 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688442776] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:25:06,506 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:25:06,507 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 11:25:06,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359678882] [2022-11-16 11:25:06,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:25:06,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 11:25:06,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:25:06,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 11:25:06,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:25:06,512 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 336 out of 412 [2022-11-16 11:25:06,515 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 473 places, 430 transitions, 1689 flow. Second operand has 8 states, 8 states have (on average 339.75) internal successors, (2718), 8 states have internal predecessors, (2718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:25:06,516 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:25:06,516 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 336 of 412 [2022-11-16 11:25:06,516 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand