./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread-ext/11_fmaxsymopt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f878372-66f3-4d2e-a678-6032e09e208a/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f878372-66f3-4d2e-a678-6032e09e208a/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f878372-66f3-4d2e-a678-6032e09e208a/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f878372-66f3-4d2e-a678-6032e09e208a/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-ext/11_fmaxsymopt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f878372-66f3-4d2e-a678-6032e09e208a/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f878372-66f3-4d2e-a678-6032e09e208a/bin/uautomizer-uyxdKDjOR8 --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 963498115a8eca6e92c68ab7fa8168826446f05b9b398350c3ee0745adf1bb45 --- 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-2329fc7 [2022-12-13 12:28:36,476 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 12:28:36,479 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 12:28:36,492 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 12:28:36,493 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 12:28:36,494 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 12:28:36,496 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 12:28:36,499 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 12:28:36,502 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 12:28:36,503 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 12:28:36,504 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 12:28:36,506 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 12:28:36,507 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 12:28:36,508 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 12:28:36,510 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 12:28:36,512 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 12:28:36,513 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 12:28:36,514 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 12:28:36,517 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 12:28:36,520 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 12:28:36,522 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 12:28:36,523 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 12:28:36,525 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 12:28:36,526 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 12:28:36,532 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 12:28:36,533 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 12:28:36,533 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 12:28:36,535 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 12:28:36,535 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 12:28:36,537 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 12:28:36,537 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 12:28:36,538 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 12:28:36,539 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 12:28:36,540 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 12:28:36,541 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 12:28:36,541 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 12:28:36,542 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 12:28:36,542 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 12:28:36,543 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 12:28:36,544 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 12:28:36,544 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 12:28:36,545 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f878372-66f3-4d2e-a678-6032e09e208a/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-12-13 12:28:36,569 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 12:28:36,569 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 12:28:36,570 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 12:28:36,570 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 12:28:36,571 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 12:28:36,571 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 12:28:36,572 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 12:28:36,572 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 12:28:36,572 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 12:28:36,572 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 12:28:36,572 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 12:28:36,573 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 12:28:36,573 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 12:28:36,573 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 12:28:36,573 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 12:28:36,573 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 12:28:36,573 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 12:28:36,574 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 12:28:36,574 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-13 12:28:36,574 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 12:28:36,574 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 12:28:36,574 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 12:28:36,575 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 12:28:36,575 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 12:28:36,575 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 12:28:36,575 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 12:28:36,575 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 12:28:36,576 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 12:28:36,576 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 12:28:36,576 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 12:28:36,576 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 12:28:36,576 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 12:28:36,577 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 12:28:36,577 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 12:28:36,577 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 12:28:36,577 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 12:28:36,577 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 12:28:36,577 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_8f878372-66f3-4d2e-a678-6032e09e208a/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f878372-66f3-4d2e-a678-6032e09e208a/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 963498115a8eca6e92c68ab7fa8168826446f05b9b398350c3ee0745adf1bb45 [2022-12-13 12:28:36,791 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 12:28:36,807 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 12:28:36,809 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 12:28:36,810 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 12:28:36,810 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 12:28:36,811 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f878372-66f3-4d2e-a678-6032e09e208a/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/pthread-ext/11_fmaxsymopt.i [2022-12-13 12:28:39,363 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 12:28:39,594 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 12:28:39,595 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f878372-66f3-4d2e-a678-6032e09e208a/sv-benchmarks/c/pthread-ext/11_fmaxsymopt.i [2022-12-13 12:28:39,607 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f878372-66f3-4d2e-a678-6032e09e208a/bin/uautomizer-uyxdKDjOR8/data/2d3ec4ac5/39c7f3e2fa56454b95741851ffc06dcc/FLAG82286b0c7 [2022-12-13 12:28:39,937 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f878372-66f3-4d2e-a678-6032e09e208a/bin/uautomizer-uyxdKDjOR8/data/2d3ec4ac5/39c7f3e2fa56454b95741851ffc06dcc [2022-12-13 12:28:39,939 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 12:28:39,940 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 12:28:39,941 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 12:28:39,942 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 12:28:39,945 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 12:28:39,946 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 12:28:39" (1/1) ... [2022-12-13 12:28:39,947 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54175eab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:28:39, skipping insertion in model container [2022-12-13 12:28:39,947 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 12:28:39" (1/1) ... [2022-12-13 12:28:39,954 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 12:28:39,990 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 12:28:40,214 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f878372-66f3-4d2e-a678-6032e09e208a/sv-benchmarks/c/pthread-ext/11_fmaxsymopt.i[30540,30553] [2022-12-13 12:28:40,220 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 12:28:40,229 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 12:28:40,263 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f878372-66f3-4d2e-a678-6032e09e208a/sv-benchmarks/c/pthread-ext/11_fmaxsymopt.i[30540,30553] [2022-12-13 12:28:40,266 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 12:28:40,295 INFO L208 MainTranslator]: Completed translation [2022-12-13 12:28:40,295 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:28:40 WrapperNode [2022-12-13 12:28:40,295 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 12:28:40,296 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 12:28:40,296 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 12:28:40,297 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 12:28:40,303 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:28:40" (1/1) ... [2022-12-13 12:28:40,314 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:28:40" (1/1) ... [2022-12-13 12:28:40,334 INFO L138 Inliner]: procedures = 171, calls = 24, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 86 [2022-12-13 12:28:40,334 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 12:28:40,335 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 12:28:40,335 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 12:28:40,335 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 12:28:40,344 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:28:40" (1/1) ... [2022-12-13 12:28:40,344 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:28:40" (1/1) ... [2022-12-13 12:28:40,347 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:28:40" (1/1) ... [2022-12-13 12:28:40,347 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:28:40" (1/1) ... [2022-12-13 12:28:40,352 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:28:40" (1/1) ... [2022-12-13 12:28:40,355 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:28:40" (1/1) ... [2022-12-13 12:28:40,357 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:28:40" (1/1) ... [2022-12-13 12:28:40,358 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:28:40" (1/1) ... [2022-12-13 12:28:40,360 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 12:28:40,361 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 12:28:40,361 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 12:28:40,361 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 12:28:40,362 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:28:40" (1/1) ... [2022-12-13 12:28:40,368 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 12:28:40,377 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f878372-66f3-4d2e-a678-6032e09e208a/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:28:40,388 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f878372-66f3-4d2e-a678-6032e09e208a/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 12:28:40,390 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f878372-66f3-4d2e-a678-6032e09e208a/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 12:28:40,423 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 12:28:40,423 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2022-12-13 12:28:40,423 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2022-12-13 12:28:40,423 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 12:28:40,423 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 12:28:40,423 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 12:28:40,423 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 12:28:40,424 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 12:28:40,424 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 12:28:40,424 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 12:28:40,425 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-13 12:28:40,529 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 12:28:40,530 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 12:28:40,677 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 12:28:40,718 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 12:28:40,719 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-12-13 12:28:40,721 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 12:28:40 BoogieIcfgContainer [2022-12-13 12:28:40,721 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 12:28:40,724 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 12:28:40,724 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 12:28:40,728 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 12:28:40,728 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 12:28:39" (1/3) ... [2022-12-13 12:28:40,728 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@584ab782 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 12:28:40, skipping insertion in model container [2022-12-13 12:28:40,729 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:28:40" (2/3) ... [2022-12-13 12:28:40,729 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@584ab782 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 12:28:40, skipping insertion in model container [2022-12-13 12:28:40,729 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 12:28:40" (3/3) ... [2022-12-13 12:28:40,730 INFO L112 eAbstractionObserver]: Analyzing ICFG 11_fmaxsymopt.i [2022-12-13 12:28:40,737 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 12:28:40,744 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 12:28:40,744 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-12-13 12:28:40,745 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 12:28:40,808 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-13 12:28:40,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 87 places, 92 transitions, 189 flow [2022-12-13 12:28:40,876 INFO L130 PetriNetUnfolder]: 9/103 cut-off events. [2022-12-13 12:28:40,877 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 12:28:40,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108 conditions, 103 events. 9/103 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 100 event pairs, 0 based on Foata normal form. 0/88 useless extension candidates. Maximal degree in co-relation 67. Up to 4 conditions per place. [2022-12-13 12:28:40,881 INFO L82 GeneralOperation]: Start removeDead. Operand has 87 places, 92 transitions, 189 flow [2022-12-13 12:28:40,885 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 87 places, 92 transitions, 189 flow [2022-12-13 12:28:40,888 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 12:28:40,895 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 87 places, 92 transitions, 189 flow [2022-12-13 12:28:40,897 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 87 places, 92 transitions, 189 flow [2022-12-13 12:28:40,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 87 places, 92 transitions, 189 flow [2022-12-13 12:28:40,913 INFO L130 PetriNetUnfolder]: 9/103 cut-off events. [2022-12-13 12:28:40,914 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 12:28:40,914 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108 conditions, 103 events. 9/103 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 100 event pairs, 0 based on Foata normal form. 0/88 useless extension candidates. Maximal degree in co-relation 67. Up to 4 conditions per place. [2022-12-13 12:28:40,915 INFO L119 LiptonReduction]: Number of co-enabled transitions 1512 [2022-12-13 12:28:43,479 INFO L134 LiptonReduction]: Checked pairs total: 1334 [2022-12-13 12:28:43,480 INFO L136 LiptonReduction]: Total number of compositions: 107 [2022-12-13 12:28:43,493 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 12:28:43,499 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;@67bc0eb5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 12:28:43,499 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2022-12-13 12:28:43,503 INFO L130 PetriNetUnfolder]: 1/9 cut-off events. [2022-12-13 12:28:43,503 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 12:28:43,503 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:28:43,504 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 12:28:43,504 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-12-13 12:28:43,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:28:43,509 INFO L85 PathProgramCache]: Analyzing trace with hash 434829698, now seen corresponding path program 1 times [2022-12-13 12:28:43,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:28:43,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214323702] [2022-12-13 12:28:43,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:28:43,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:28:43,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:28:43,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:28:43,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:28:43,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214323702] [2022-12-13 12:28:43,825 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214323702] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:28:43,826 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:28:43,826 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 12:28:43,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342765446] [2022-12-13 12:28:43,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:28:43,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:28:43,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:28:43,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:28:43,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:28:43,876 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 199 [2022-12-13 12:28:43,878 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 15 places, 13 transitions, 31 flow. Second operand has 3 states, 3 states have (on average 80.66666666666667) internal successors, (242), 3 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:28:43,878 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:28:43,878 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 199 [2022-12-13 12:28:43,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:28:43,909 INFO L130 PetriNetUnfolder]: 11/29 cut-off events. [2022-12-13 12:28:43,909 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 12:28:43,909 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63 conditions, 29 events. 11/29 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 57 event pairs, 0 based on Foata normal form. 0/20 useless extension candidates. Maximal degree in co-relation 50. Up to 23 conditions per place. [2022-12-13 12:28:43,910 INFO L137 encePairwiseOnDemand]: 195/199 looper letters, 10 selfloop transitions, 1 changer transitions 0/12 dead transitions. [2022-12-13 12:28:43,911 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 14 places, 12 transitions, 51 flow [2022-12-13 12:28:43,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:28:43,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:28:43,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 252 transitions. [2022-12-13 12:28:43,923 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4221105527638191 [2022-12-13 12:28:43,924 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 252 transitions. [2022-12-13 12:28:43,924 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 252 transitions. [2022-12-13 12:28:43,926 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:28:43,928 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 252 transitions. [2022-12-13 12:28:43,931 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 84.0) internal successors, (252), 3 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:28:43,936 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 199.0) internal successors, (796), 4 states have internal predecessors, (796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:28:43,936 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 199.0) internal successors, (796), 4 states have internal predecessors, (796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:28:43,938 INFO L175 Difference]: Start difference. First operand has 15 places, 13 transitions, 31 flow. Second operand 3 states and 252 transitions. [2022-12-13 12:28:43,939 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 14 places, 12 transitions, 51 flow [2022-12-13 12:28:43,941 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 14 places, 12 transitions, 51 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 12:28:43,942 INFO L231 Difference]: Finished difference. Result has 14 places, 10 transitions, 27 flow [2022-12-13 12:28:43,944 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=199, PETRI_DIFFERENCE_MINUEND_FLOW=25, PETRI_DIFFERENCE_MINUEND_PLACES=12, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=10, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=27, PETRI_PLACES=14, PETRI_TRANSITIONS=10} [2022-12-13 12:28:43,948 INFO L288 CegarLoopForPetriNet]: 15 programPoint places, -1 predicate places. [2022-12-13 12:28:43,948 INFO L495 AbstractCegarLoop]: Abstraction has has 14 places, 10 transitions, 27 flow [2022-12-13 12:28:43,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 80.66666666666667) internal successors, (242), 3 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:28:43,948 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:28:43,948 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 12:28:43,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 12:28:43,949 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-12-13 12:28:43,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:28:43,949 INFO L85 PathProgramCache]: Analyzing trace with hash 434829767, now seen corresponding path program 1 times [2022-12-13 12:28:43,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:28:43,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934942880] [2022-12-13 12:28:43,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:28:43,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:28:43,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:28:44,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:28:44,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:28:44,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934942880] [2022-12-13 12:28:44,045 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934942880] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:28:44,045 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:28:44,045 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 12:28:44,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469115717] [2022-12-13 12:28:44,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:28:44,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:28:44,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:28:44,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:28:44,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:28:44,058 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 199 [2022-12-13 12:28:44,059 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 14 places, 10 transitions, 27 flow. Second operand has 3 states, 3 states have (on average 80.66666666666667) internal successors, (242), 3 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:28:44,059 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:28:44,059 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 199 [2022-12-13 12:28:44,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:28:44,080 INFO L130 PetriNetUnfolder]: 9/24 cut-off events. [2022-12-13 12:28:44,080 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 12:28:44,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57 conditions, 24 events. 9/24 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 42 event pairs, 0 based on Foata normal form. 0/18 useless extension candidates. Maximal degree in co-relation 43. Up to 18 conditions per place. [2022-12-13 12:28:44,081 INFO L137 encePairwiseOnDemand]: 197/199 looper letters, 9 selfloop transitions, 1 changer transitions 0/11 dead transitions. [2022-12-13 12:28:44,081 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 15 places, 11 transitions, 49 flow [2022-12-13 12:28:44,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:28:44,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:28:44,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 248 transitions. [2022-12-13 12:28:44,083 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4154103852596315 [2022-12-13 12:28:44,083 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 248 transitions. [2022-12-13 12:28:44,083 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 248 transitions. [2022-12-13 12:28:44,084 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:28:44,084 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 248 transitions. [2022-12-13 12:28:44,085 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 82.66666666666667) internal successors, (248), 3 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:28:44,086 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 199.0) internal successors, (796), 4 states have internal predecessors, (796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:28:44,087 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 199.0) internal successors, (796), 4 states have internal predecessors, (796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:28:44,087 INFO L175 Difference]: Start difference. First operand has 14 places, 10 transitions, 27 flow. Second operand 3 states and 248 transitions. [2022-12-13 12:28:44,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 15 places, 11 transitions, 49 flow [2022-12-13 12:28:44,088 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 14 places, 11 transitions, 48 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 12:28:44,088 INFO L231 Difference]: Finished difference. Result has 14 places, 9 transitions, 26 flow [2022-12-13 12:28:44,088 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=199, PETRI_DIFFERENCE_MINUEND_FLOW=24, PETRI_DIFFERENCE_MINUEND_PLACES=12, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=9, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=26, PETRI_PLACES=14, PETRI_TRANSITIONS=9} [2022-12-13 12:28:44,089 INFO L288 CegarLoopForPetriNet]: 15 programPoint places, -1 predicate places. [2022-12-13 12:28:44,089 INFO L495 AbstractCegarLoop]: Abstraction has has 14 places, 9 transitions, 26 flow [2022-12-13 12:28:44,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 80.66666666666667) internal successors, (242), 3 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:28:44,089 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:28:44,089 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 12:28:44,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 12:28:44,090 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-12-13 12:28:44,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:28:44,090 INFO L85 PathProgramCache]: Analyzing trace with hash 434829833, now seen corresponding path program 1 times [2022-12-13 12:28:44,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:28:44,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253312729] [2022-12-13 12:28:44,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:28:44,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:28:44,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:28:44,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:28:44,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:28:44,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253312729] [2022-12-13 12:28:44,185 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253312729] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:28:44,186 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:28:44,186 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 12:28:44,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992895275] [2022-12-13 12:28:44,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:28:44,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:28:44,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:28:44,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:28:44,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:28:44,198 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 199 [2022-12-13 12:28:44,198 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 14 places, 9 transitions, 26 flow. Second operand has 3 states, 3 states have (on average 80.66666666666667) internal successors, (242), 3 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:28:44,199 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:28:44,199 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 199 [2022-12-13 12:28:44,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:28:44,216 INFO L130 PetriNetUnfolder]: 7/19 cut-off events. [2022-12-13 12:28:44,216 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 12:28:44,216 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50 conditions, 19 events. 7/19 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 23 event pairs, 0 based on Foata normal form. 0/16 useless extension candidates. Maximal degree in co-relation 36. Up to 13 conditions per place. [2022-12-13 12:28:44,217 INFO L137 encePairwiseOnDemand]: 197/199 looper letters, 8 selfloop transitions, 1 changer transitions 0/10 dead transitions. [2022-12-13 12:28:44,217 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 15 places, 10 transitions, 46 flow [2022-12-13 12:28:44,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:28:44,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:28:44,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 247 transitions. [2022-12-13 12:28:44,218 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4137353433835846 [2022-12-13 12:28:44,218 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 247 transitions. [2022-12-13 12:28:44,218 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 247 transitions. [2022-12-13 12:28:44,218 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:28:44,218 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 247 transitions. [2022-12-13 12:28:44,219 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 82.33333333333333) internal successors, (247), 3 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:28:44,222 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 199.0) internal successors, (796), 4 states have internal predecessors, (796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:28:44,222 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 199.0) internal successors, (796), 4 states have internal predecessors, (796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:28:44,222 INFO L175 Difference]: Start difference. First operand has 14 places, 9 transitions, 26 flow. Second operand 3 states and 247 transitions. [2022-12-13 12:28:44,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 15 places, 10 transitions, 46 flow [2022-12-13 12:28:44,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 14 places, 10 transitions, 45 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 12:28:44,223 INFO L231 Difference]: Finished difference. Result has 14 places, 8 transitions, 25 flow [2022-12-13 12:28:44,223 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=199, PETRI_DIFFERENCE_MINUEND_FLOW=23, PETRI_DIFFERENCE_MINUEND_PLACES=12, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=8, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=25, PETRI_PLACES=14, PETRI_TRANSITIONS=8} [2022-12-13 12:28:44,224 INFO L288 CegarLoopForPetriNet]: 15 programPoint places, -1 predicate places. [2022-12-13 12:28:44,224 INFO L495 AbstractCegarLoop]: Abstraction has has 14 places, 8 transitions, 25 flow [2022-12-13 12:28:44,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 80.66666666666667) internal successors, (242), 3 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:28:44,224 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:28:44,224 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2022-12-13 12:28:44,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 12:28:44,225 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-12-13 12:28:44,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:28:44,225 INFO L85 PathProgramCache]: Analyzing trace with hash 594745110, now seen corresponding path program 1 times [2022-12-13 12:28:44,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:28:44,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406429340] [2022-12-13 12:28:44,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:28:44,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:28:44,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 12:28:44,236 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 12:28:44,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 12:28:44,259 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 12:28:44,259 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 12:28:44,260 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 9 remaining) [2022-12-13 12:28:44,262 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 9 remaining) [2022-12-13 12:28:44,262 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 9 remaining) [2022-12-13 12:28:44,262 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 9 remaining) [2022-12-13 12:28:44,262 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 9 remaining) [2022-12-13 12:28:44,263 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 9 remaining) [2022-12-13 12:28:44,263 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 9 remaining) [2022-12-13 12:28:44,263 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 9 remaining) [2022-12-13 12:28:44,263 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 9 remaining) [2022-12-13 12:28:44,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 12:28:44,264 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-12-13 12:28:44,266 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-13 12:28:44,266 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-12-13 12:28:44,289 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-13 12:28:44,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 137 places, 147 transitions, 306 flow [2022-12-13 12:28:44,327 INFO L130 PetriNetUnfolder]: 17/171 cut-off events. [2022-12-13 12:28:44,328 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 12:28:44,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 181 conditions, 171 events. 17/171 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 323 event pairs, 0 based on Foata normal form. 0/143 useless extension candidates. Maximal degree in co-relation 121. Up to 6 conditions per place. [2022-12-13 12:28:44,330 INFO L82 GeneralOperation]: Start removeDead. Operand has 137 places, 147 transitions, 306 flow [2022-12-13 12:28:44,332 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 137 places, 147 transitions, 306 flow [2022-12-13 12:28:44,332 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 12:28:44,332 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 137 places, 147 transitions, 306 flow [2022-12-13 12:28:44,332 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 137 places, 147 transitions, 306 flow [2022-12-13 12:28:44,332 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 137 places, 147 transitions, 306 flow [2022-12-13 12:28:44,356 INFO L130 PetriNetUnfolder]: 17/171 cut-off events. [2022-12-13 12:28:44,356 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 12:28:44,358 INFO L83 FinitePrefix]: Finished finitePrefix Result has 181 conditions, 171 events. 17/171 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 323 event pairs, 0 based on Foata normal form. 0/143 useless extension candidates. Maximal degree in co-relation 121. Up to 6 conditions per place. [2022-12-13 12:28:44,363 INFO L119 LiptonReduction]: Number of co-enabled transitions 8964 [2022-12-13 12:28:46,891 INFO L134 LiptonReduction]: Checked pairs total: 12026 [2022-12-13 12:28:46,891 INFO L136 LiptonReduction]: Total number of compositions: 159 [2022-12-13 12:28:46,893 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 12:28:46,894 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;@67bc0eb5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 12:28:46,894 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2022-12-13 12:28:46,896 INFO L130 PetriNetUnfolder]: 1/8 cut-off events. [2022-12-13 12:28:46,896 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 12:28:46,896 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:28:46,896 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 12:28:46,897 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-12-13 12:28:46,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:28:46,897 INFO L85 PathProgramCache]: Analyzing trace with hash 785241017, now seen corresponding path program 1 times [2022-12-13 12:28:46,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:28:46,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824539421] [2022-12-13 12:28:46,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:28:46,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:28:46,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:28:46,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:28:46,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:28:46,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824539421] [2022-12-13 12:28:46,956 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824539421] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:28:46,956 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:28:46,956 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 12:28:46,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804194182] [2022-12-13 12:28:46,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:28:46,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:28:46,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:28:46,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:28:46,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:28:46,969 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 306 [2022-12-13 12:28:46,970 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 34 transitions, 80 flow. Second operand has 3 states, 3 states have (on average 128.66666666666666) internal successors, (386), 3 states have internal predecessors, (386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:28:46,970 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:28:46,970 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 306 [2022-12-13 12:28:46,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:28:47,039 INFO L130 PetriNetUnfolder]: 180/337 cut-off events. [2022-12-13 12:28:47,039 INFO L131 PetriNetUnfolder]: For 20/20 co-relation queries the response was YES. [2022-12-13 12:28:47,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 642 conditions, 337 events. 180/337 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1684 event pairs, 6 based on Foata normal form. 0/228 useless extension candidates. Maximal degree in co-relation 542. Up to 250 conditions per place. [2022-12-13 12:28:47,044 INFO L137 encePairwiseOnDemand]: 299/306 looper letters, 26 selfloop transitions, 1 changer transitions 0/37 dead transitions. [2022-12-13 12:28:47,044 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 37 transitions, 145 flow [2022-12-13 12:28:47,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:28:47,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:28:47,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 417 transitions. [2022-12-13 12:28:47,047 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4542483660130719 [2022-12-13 12:28:47,047 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 417 transitions. [2022-12-13 12:28:47,047 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 417 transitions. [2022-12-13 12:28:47,047 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:28:47,048 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 417 transitions. [2022-12-13 12:28:47,049 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 139.0) internal successors, (417), 3 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:28:47,053 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 306.0) internal successors, (1224), 4 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:28:47,055 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 306.0) internal successors, (1224), 4 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:28:47,055 INFO L175 Difference]: Start difference. First operand has 33 places, 34 transitions, 80 flow. Second operand 3 states and 417 transitions. [2022-12-13 12:28:47,055 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 37 transitions, 145 flow [2022-12-13 12:28:47,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 37 transitions, 143 flow, removed 1 selfloop flow, removed 0 redundant places. [2022-12-13 12:28:47,057 INFO L231 Difference]: Finished difference. Result has 31 places, 28 transitions, 68 flow [2022-12-13 12:28:47,057 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=68, PETRI_PLACES=31, PETRI_TRANSITIONS=28} [2022-12-13 12:28:47,058 INFO L288 CegarLoopForPetriNet]: 33 programPoint places, -2 predicate places. [2022-12-13 12:28:47,058 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 28 transitions, 68 flow [2022-12-13 12:28:47,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 128.66666666666666) internal successors, (386), 3 states have internal predecessors, (386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:28:47,058 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:28:47,058 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 12:28:47,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 12:28:47,059 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-12-13 12:28:47,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:28:47,059 INFO L85 PathProgramCache]: Analyzing trace with hash 785241056, now seen corresponding path program 1 times [2022-12-13 12:28:47,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:28:47,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238228425] [2022-12-13 12:28:47,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:28:47,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:28:47,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:28:47,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:28:47,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:28:47,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238228425] [2022-12-13 12:28:47,108 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238228425] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:28:47,109 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:28:47,109 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 12:28:47,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601269776] [2022-12-13 12:28:47,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:28:47,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:28:47,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:28:47,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:28:47,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:28:47,119 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 306 [2022-12-13 12:28:47,120 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 28 transitions, 68 flow. Second operand has 3 states, 3 states have (on average 128.66666666666666) internal successors, (386), 3 states have internal predecessors, (386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:28:47,120 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:28:47,120 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 306 [2022-12-13 12:28:47,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:28:47,184 INFO L130 PetriNetUnfolder]: 153/286 cut-off events. [2022-12-13 12:28:47,185 INFO L131 PetriNetUnfolder]: For 31/31 co-relation queries the response was YES. [2022-12-13 12:28:47,185 INFO L83 FinitePrefix]: Finished finitePrefix Result has 565 conditions, 286 events. 153/286 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1327 event pairs, 22 based on Foata normal form. 0/203 useless extension candidates. Maximal degree in co-relation 476. Up to 211 conditions per place. [2022-12-13 12:28:47,187 INFO L137 encePairwiseOnDemand]: 304/306 looper letters, 25 selfloop transitions, 1 changer transitions 0/36 dead transitions. [2022-12-13 12:28:47,187 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 36 transitions, 141 flow [2022-12-13 12:28:47,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:28:47,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:28:47,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 408 transitions. [2022-12-13 12:28:47,189 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2022-12-13 12:28:47,189 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 408 transitions. [2022-12-13 12:28:47,189 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 408 transitions. [2022-12-13 12:28:47,189 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:28:47,189 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 408 transitions. [2022-12-13 12:28:47,190 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 136.0) internal successors, (408), 3 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:28:47,192 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 306.0) internal successors, (1224), 4 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:28:47,193 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 306.0) internal successors, (1224), 4 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:28:47,193 INFO L175 Difference]: Start difference. First operand has 31 places, 28 transitions, 68 flow. Second operand 3 states and 408 transitions. [2022-12-13 12:28:47,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 36 transitions, 141 flow [2022-12-13 12:28:47,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 36 transitions, 140 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 12:28:47,194 INFO L231 Difference]: Finished difference. Result has 31 places, 27 transitions, 67 flow [2022-12-13 12:28:47,194 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=65, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=67, PETRI_PLACES=31, PETRI_TRANSITIONS=27} [2022-12-13 12:28:47,195 INFO L288 CegarLoopForPetriNet]: 33 programPoint places, -2 predicate places. [2022-12-13 12:28:47,195 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 27 transitions, 67 flow [2022-12-13 12:28:47,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 128.66666666666666) internal successors, (386), 3 states have internal predecessors, (386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:28:47,196 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:28:47,196 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 12:28:47,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 12:28:47,196 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-12-13 12:28:47,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:28:47,196 INFO L85 PathProgramCache]: Analyzing trace with hash 785241207, now seen corresponding path program 1 times [2022-12-13 12:28:47,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:28:47,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515040108] [2022-12-13 12:28:47,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:28:47,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:28:47,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:28:47,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:28:47,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:28:47,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515040108] [2022-12-13 12:28:47,251 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515040108] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:28:47,251 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:28:47,252 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 12:28:47,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995661193] [2022-12-13 12:28:47,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:28:47,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:28:47,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:28:47,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:28:47,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:28:47,269 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 306 [2022-12-13 12:28:47,270 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 27 transitions, 67 flow. Second operand has 3 states, 3 states have (on average 126.66666666666667) internal successors, (380), 3 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:28:47,270 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:28:47,270 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 306 [2022-12-13 12:28:47,270 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:28:47,341 INFO L130 PetriNetUnfolder]: 174/339 cut-off events. [2022-12-13 12:28:47,341 INFO L131 PetriNetUnfolder]: For 34/34 co-relation queries the response was YES. [2022-12-13 12:28:47,342 INFO L83 FinitePrefix]: Finished finitePrefix Result has 680 conditions, 339 events. 174/339 cut-off events. For 34/34 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1609 event pairs, 111 based on Foata normal form. 0/244 useless extension candidates. Maximal degree in co-relation 443. Up to 238 conditions per place. [2022-12-13 12:28:47,343 INFO L137 encePairwiseOnDemand]: 302/306 looper letters, 25 selfloop transitions, 2 changer transitions 0/37 dead transitions. [2022-12-13 12:28:47,344 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 37 transitions, 146 flow [2022-12-13 12:28:47,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:28:47,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:28:47,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 404 transitions. [2022-12-13 12:28:47,345 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4400871459694989 [2022-12-13 12:28:47,346 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 404 transitions. [2022-12-13 12:28:47,346 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 404 transitions. [2022-12-13 12:28:47,346 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:28:47,346 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 404 transitions. [2022-12-13 12:28:47,347 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 134.66666666666666) internal successors, (404), 3 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:28:47,349 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 306.0) internal successors, (1224), 4 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:28:47,350 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 306.0) internal successors, (1224), 4 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:28:47,350 INFO L175 Difference]: Start difference. First operand has 31 places, 27 transitions, 67 flow. Second operand 3 states and 404 transitions. [2022-12-13 12:28:47,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 37 transitions, 146 flow [2022-12-13 12:28:47,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 37 transitions, 145 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 12:28:47,351 INFO L231 Difference]: Finished difference. Result has 33 places, 28 transitions, 80 flow [2022-12-13 12:28:47,351 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=80, PETRI_PLACES=33, PETRI_TRANSITIONS=28} [2022-12-13 12:28:47,352 INFO L288 CegarLoopForPetriNet]: 33 programPoint places, 0 predicate places. [2022-12-13 12:28:47,352 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 28 transitions, 80 flow [2022-12-13 12:28:47,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 126.66666666666667) internal successors, (380), 3 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:28:47,353 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:28:47,353 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-13 12:28:47,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 12:28:47,353 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-12-13 12:28:47,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:28:47,353 INFO L85 PathProgramCache]: Analyzing trace with hash -1427325630, now seen corresponding path program 1 times [2022-12-13 12:28:47,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:28:47,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522998478] [2022-12-13 12:28:47,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:28:47,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:28:47,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:28:47,388 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:28:47,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:28:47,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522998478] [2022-12-13 12:28:47,389 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522998478] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:28:47,389 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:28:47,389 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 12:28:47,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938944985] [2022-12-13 12:28:47,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:28:47,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:28:47,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:28:47,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:28:47,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:28:47,400 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 306 [2022-12-13 12:28:47,401 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 28 transitions, 80 flow. Second operand has 3 states, 3 states have (on average 129.0) internal successors, (387), 3 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:28:47,401 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:28:47,401 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 306 [2022-12-13 12:28:47,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:28:47,475 INFO L130 PetriNetUnfolder]: 157/298 cut-off events. [2022-12-13 12:28:47,475 INFO L131 PetriNetUnfolder]: For 62/62 co-relation queries the response was YES. [2022-12-13 12:28:47,476 INFO L83 FinitePrefix]: Finished finitePrefix Result has 674 conditions, 298 events. 157/298 cut-off events. For 62/62 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1383 event pairs, 6 based on Foata normal form. 0/227 useless extension candidates. Maximal degree in co-relation 572. Up to 211 conditions per place. [2022-12-13 12:28:47,477 INFO L137 encePairwiseOnDemand]: 304/306 looper letters, 25 selfloop transitions, 1 changer transitions 0/36 dead transitions. [2022-12-13 12:28:47,477 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 36 transitions, 151 flow [2022-12-13 12:28:47,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:28:47,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:28:47,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 407 transitions. [2022-12-13 12:28:47,478 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4433551198257081 [2022-12-13 12:28:47,478 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 407 transitions. [2022-12-13 12:28:47,478 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 407 transitions. [2022-12-13 12:28:47,478 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:28:47,478 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 407 transitions. [2022-12-13 12:28:47,479 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 135.66666666666666) internal successors, (407), 3 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:28:47,480 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 306.0) internal successors, (1224), 4 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:28:47,480 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 306.0) internal successors, (1224), 4 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:28:47,480 INFO L175 Difference]: Start difference. First operand has 33 places, 28 transitions, 80 flow. Second operand 3 states and 407 transitions. [2022-12-13 12:28:47,480 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 36 transitions, 151 flow [2022-12-13 12:28:47,481 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 36 transitions, 147 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-12-13 12:28:47,481 INFO L231 Difference]: Finished difference. Result has 33 places, 27 transitions, 74 flow [2022-12-13 12:28:47,481 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=74, PETRI_PLACES=33, PETRI_TRANSITIONS=27} [2022-12-13 12:28:47,482 INFO L288 CegarLoopForPetriNet]: 33 programPoint places, 0 predicate places. [2022-12-13 12:28:47,482 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 27 transitions, 74 flow [2022-12-13 12:28:47,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 129.0) internal successors, (387), 3 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:28:47,482 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:28:47,482 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:28:47,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 12:28:47,482 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-12-13 12:28:47,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:28:47,483 INFO L85 PathProgramCache]: Analyzing trace with hash 2003060550, now seen corresponding path program 1 times [2022-12-13 12:28:47,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:28:47,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260107132] [2022-12-13 12:28:47,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:28:47,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:28:47,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:28:47,518 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 12:28:47,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:28:47,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260107132] [2022-12-13 12:28:47,518 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260107132] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:28:47,519 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:28:47,519 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 12:28:47,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327306680] [2022-12-13 12:28:47,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:28:47,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:28:47,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:28:47,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:28:47,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:28:47,529 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 306 [2022-12-13 12:28:47,530 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 27 transitions, 74 flow. Second operand has 3 states, 3 states have (on average 129.0) internal successors, (387), 3 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:28:47,530 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:28:47,530 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 306 [2022-12-13 12:28:47,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:28:47,589 INFO L130 PetriNetUnfolder]: 153/296 cut-off events. [2022-12-13 12:28:47,589 INFO L131 PetriNetUnfolder]: For 76/76 co-relation queries the response was YES. [2022-12-13 12:28:47,590 INFO L83 FinitePrefix]: Finished finitePrefix Result has 660 conditions, 296 events. 153/296 cut-off events. For 76/76 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1302 event pairs, 15 based on Foata normal form. 0/227 useless extension candidates. Maximal degree in co-relation 464. Up to 192 conditions per place. [2022-12-13 12:28:47,592 INFO L137 encePairwiseOnDemand]: 304/306 looper letters, 23 selfloop transitions, 1 changer transitions 0/33 dead transitions. [2022-12-13 12:28:47,592 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 33 transitions, 144 flow [2022-12-13 12:28:47,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:28:47,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:28:47,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 404 transitions. [2022-12-13 12:28:47,595 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4400871459694989 [2022-12-13 12:28:47,595 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 404 transitions. [2022-12-13 12:28:47,595 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 404 transitions. [2022-12-13 12:28:47,596 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:28:47,596 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 404 transitions. [2022-12-13 12:28:47,597 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 134.66666666666666) internal successors, (404), 3 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:28:47,600 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 306.0) internal successors, (1224), 4 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:28:47,600 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 306.0) internal successors, (1224), 4 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:28:47,600 INFO L175 Difference]: Start difference. First operand has 33 places, 27 transitions, 74 flow. Second operand 3 states and 404 transitions. [2022-12-13 12:28:47,600 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 33 transitions, 144 flow [2022-12-13 12:28:47,601 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 33 transitions, 142 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 12:28:47,602 INFO L231 Difference]: Finished difference. Result has 33 places, 26 transitions, 73 flow [2022-12-13 12:28:47,602 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=71, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=73, PETRI_PLACES=33, PETRI_TRANSITIONS=26} [2022-12-13 12:28:47,603 INFO L288 CegarLoopForPetriNet]: 33 programPoint places, 0 predicate places. [2022-12-13 12:28:47,603 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 26 transitions, 73 flow [2022-12-13 12:28:47,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 129.0) internal successors, (387), 3 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:28:47,603 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:28:47,603 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:28:47,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 12:28:47,604 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-12-13 12:28:47,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:28:47,604 INFO L85 PathProgramCache]: Analyzing trace with hash 2003060780, now seen corresponding path program 1 times [2022-12-13 12:28:47,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:28:47,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605255587] [2022-12-13 12:28:47,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:28:47,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:28:47,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:28:47,671 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 12:28:47,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:28:47,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605255587] [2022-12-13 12:28:47,672 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605255587] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:28:47,672 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:28:47,672 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 12:28:47,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066086428] [2022-12-13 12:28:47,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:28:47,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:28:47,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:28:47,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:28:47,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:28:47,682 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 306 [2022-12-13 12:28:47,683 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 26 transitions, 73 flow. Second operand has 3 states, 3 states have (on average 129.0) internal successors, (387), 3 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:28:47,683 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:28:47,683 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 306 [2022-12-13 12:28:47,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:28:47,743 INFO L130 PetriNetUnfolder]: 135/266 cut-off events. [2022-12-13 12:28:47,743 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2022-12-13 12:28:47,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 600 conditions, 266 events. 135/266 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1122 event pairs, 15 based on Foata normal form. 0/210 useless extension candidates. Maximal degree in co-relation 420. Up to 162 conditions per place. [2022-12-13 12:28:47,745 INFO L137 encePairwiseOnDemand]: 304/306 looper letters, 22 selfloop transitions, 1 changer transitions 0/32 dead transitions. [2022-12-13 12:28:47,745 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 32 transitions, 140 flow [2022-12-13 12:28:47,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:28:47,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:28:47,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 403 transitions. [2022-12-13 12:28:47,748 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43899782135076254 [2022-12-13 12:28:47,748 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 403 transitions. [2022-12-13 12:28:47,748 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 403 transitions. [2022-12-13 12:28:47,749 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:28:47,749 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 403 transitions. [2022-12-13 12:28:47,750 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 134.33333333333334) internal successors, (403), 3 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:28:47,753 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 306.0) internal successors, (1224), 4 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:28:47,753 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 306.0) internal successors, (1224), 4 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:28:47,753 INFO L175 Difference]: Start difference. First operand has 33 places, 26 transitions, 73 flow. Second operand 3 states and 403 transitions. [2022-12-13 12:28:47,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 32 transitions, 140 flow [2022-12-13 12:28:47,754 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 32 transitions, 139 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 12:28:47,755 INFO L231 Difference]: Finished difference. Result has 33 places, 25 transitions, 72 flow [2022-12-13 12:28:47,755 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=72, PETRI_PLACES=33, PETRI_TRANSITIONS=25} [2022-12-13 12:28:47,756 INFO L288 CegarLoopForPetriNet]: 33 programPoint places, 0 predicate places. [2022-12-13 12:28:47,756 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 25 transitions, 72 flow [2022-12-13 12:28:47,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 129.0) internal successors, (387), 3 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:28:47,756 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:28:47,756 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:28:47,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 12:28:47,757 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-12-13 12:28:47,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:28:47,757 INFO L85 PathProgramCache]: Analyzing trace with hash 2003060692, now seen corresponding path program 1 times [2022-12-13 12:28:47,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:28:47,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95114666] [2022-12-13 12:28:47,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:28:47,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:28:47,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:28:47,809 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 12:28:47,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:28:47,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95114666] [2022-12-13 12:28:47,809 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95114666] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:28:47,809 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:28:47,809 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 12:28:47,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266148697] [2022-12-13 12:28:47,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:28:47,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:28:47,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:28:47,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:28:47,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:28:47,822 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 306 [2022-12-13 12:28:47,822 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 25 transitions, 72 flow. Second operand has 3 states, 3 states have (on average 129.0) internal successors, (387), 3 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:28:47,822 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:28:47,822 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 306 [2022-12-13 12:28:47,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:28:47,867 INFO L130 PetriNetUnfolder]: 117/236 cut-off events. [2022-12-13 12:28:47,868 INFO L131 PetriNetUnfolder]: For 44/44 co-relation queries the response was YES. [2022-12-13 12:28:47,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 540 conditions, 236 events. 117/236 cut-off events. For 44/44 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 947 event pairs, 15 based on Foata normal form. 0/194 useless extension candidates. Maximal degree in co-relation 376. Up to 132 conditions per place. [2022-12-13 12:28:47,869 INFO L137 encePairwiseOnDemand]: 304/306 looper letters, 21 selfloop transitions, 1 changer transitions 0/31 dead transitions. [2022-12-13 12:28:47,869 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 31 transitions, 137 flow [2022-12-13 12:28:47,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:28:47,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:28:47,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 402 transitions. [2022-12-13 12:28:47,871 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43790849673202614 [2022-12-13 12:28:47,871 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 402 transitions. [2022-12-13 12:28:47,871 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 402 transitions. [2022-12-13 12:28:47,871 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:28:47,872 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 402 transitions. [2022-12-13 12:28:47,872 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 134.0) internal successors, (402), 3 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:28:47,874 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 306.0) internal successors, (1224), 4 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:28:47,874 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 306.0) internal successors, (1224), 4 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:28:47,875 INFO L175 Difference]: Start difference. First operand has 33 places, 25 transitions, 72 flow. Second operand 3 states and 402 transitions. [2022-12-13 12:28:47,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 31 transitions, 137 flow [2022-12-13 12:28:47,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 31 transitions, 136 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 12:28:47,876 INFO L231 Difference]: Finished difference. Result has 33 places, 24 transitions, 71 flow [2022-12-13 12:28:47,876 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=69, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=71, PETRI_PLACES=33, PETRI_TRANSITIONS=24} [2022-12-13 12:28:47,876 INFO L288 CegarLoopForPetriNet]: 33 programPoint places, 0 predicate places. [2022-12-13 12:28:47,876 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 24 transitions, 71 flow [2022-12-13 12:28:47,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 129.0) internal successors, (387), 3 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:28:47,877 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:28:47,877 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-12-13 12:28:47,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-13 12:28:47,877 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-12-13 12:28:47,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:28:47,877 INFO L85 PathProgramCache]: Analyzing trace with hash 786136956, now seen corresponding path program 1 times [2022-12-13 12:28:47,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:28:47,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151419679] [2022-12-13 12:28:47,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:28:47,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:28:47,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 12:28:47,886 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 12:28:47,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 12:28:47,894 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 12:28:47,894 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 12:28:47,895 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2022-12-13 12:28:47,895 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2022-12-13 12:28:47,895 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2022-12-13 12:28:47,895 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 13 remaining) [2022-12-13 12:28:47,895 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 13 remaining) [2022-12-13 12:28:47,895 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 13 remaining) [2022-12-13 12:28:47,895 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 13 remaining) [2022-12-13 12:28:47,895 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 13 remaining) [2022-12-13 12:28:47,896 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 13 remaining) [2022-12-13 12:28:47,896 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 13 remaining) [2022-12-13 12:28:47,896 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 13 remaining) [2022-12-13 12:28:47,896 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2022-12-13 12:28:47,896 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2022-12-13 12:28:47,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-13 12:28:47,896 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:28:47,897 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-13 12:28:47,897 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-12-13 12:28:47,919 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-13 12:28:47,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 187 places, 202 transitions, 425 flow [2022-12-13 12:28:47,951 INFO L130 PetriNetUnfolder]: 25/239 cut-off events. [2022-12-13 12:28:47,952 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-12-13 12:28:47,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 255 conditions, 239 events. 25/239 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 622 event pairs, 0 based on Foata normal form. 0/198 useless extension candidates. Maximal degree in co-relation 175. Up to 8 conditions per place. [2022-12-13 12:28:47,953 INFO L82 GeneralOperation]: Start removeDead. Operand has 187 places, 202 transitions, 425 flow [2022-12-13 12:28:47,956 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 187 places, 202 transitions, 425 flow [2022-12-13 12:28:47,956 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 12:28:47,956 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 187 places, 202 transitions, 425 flow [2022-12-13 12:28:47,956 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 187 places, 202 transitions, 425 flow [2022-12-13 12:28:47,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 187 places, 202 transitions, 425 flow [2022-12-13 12:28:47,992 INFO L130 PetriNetUnfolder]: 25/239 cut-off events. [2022-12-13 12:28:47,992 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-12-13 12:28:47,993 INFO L83 FinitePrefix]: Finished finitePrefix Result has 255 conditions, 239 events. 25/239 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 622 event pairs, 0 based on Foata normal form. 0/198 useless extension candidates. Maximal degree in co-relation 175. Up to 8 conditions per place. [2022-12-13 12:28:48,004 INFO L119 LiptonReduction]: Number of co-enabled transitions 22356 [2022-12-13 12:28:51,872 INFO L134 LiptonReduction]: Checked pairs total: 31369 [2022-12-13 12:28:51,872 INFO L136 LiptonReduction]: Total number of compositions: 225 [2022-12-13 12:28:51,874 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 12:28:51,874 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;@67bc0eb5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 12:28:51,874 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2022-12-13 12:28:51,876 INFO L130 PetriNetUnfolder]: 1/8 cut-off events. [2022-12-13 12:28:51,876 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 12:28:51,876 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:28:51,876 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 12:28:51,877 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-12-13 12:28:51,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:28:51,877 INFO L85 PathProgramCache]: Analyzing trace with hash 1242053286, now seen corresponding path program 1 times [2022-12-13 12:28:51,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:28:51,877 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953864500] [2022-12-13 12:28:51,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:28:51,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:28:51,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:28:51,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:28:51,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:28:51,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953864500] [2022-12-13 12:28:51,910 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953864500] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:28:51,910 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:28:51,910 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 12:28:51,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137477572] [2022-12-13 12:28:51,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:28:51,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:28:51,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:28:51,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:28:51,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:28:51,920 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 427 [2022-12-13 12:28:51,921 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 48 transitions, 117 flow. Second operand has 3 states, 3 states have (on average 176.66666666666666) internal successors, (530), 3 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:28:51,921 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:28:51,921 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 427 [2022-12-13 12:28:51,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:28:52,212 INFO L130 PetriNetUnfolder]: 2056/3152 cut-off events. [2022-12-13 12:28:52,212 INFO L131 PetriNetUnfolder]: For 328/328 co-relation queries the response was YES. [2022-12-13 12:28:52,218 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6120 conditions, 3152 events. 2056/3152 cut-off events. For 328/328 co-relation queries the response was YES. Maximal size of possible extension queue 228. Compared 19323 event pairs, 132 based on Foata normal form. 0/2042 useless extension candidates. Maximal degree in co-relation 1327. Up to 2448 conditions per place. [2022-12-13 12:28:52,231 INFO L137 encePairwiseOnDemand]: 418/427 looper letters, 42 selfloop transitions, 1 changer transitions 0/57 dead transitions. [2022-12-13 12:28:52,231 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 57 transitions, 233 flow [2022-12-13 12:28:52,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:28:52,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:28:52,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 581 transitions. [2022-12-13 12:28:52,234 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.453551912568306 [2022-12-13 12:28:52,234 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 581 transitions. [2022-12-13 12:28:52,234 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 581 transitions. [2022-12-13 12:28:52,235 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:28:52,235 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 581 transitions. [2022-12-13 12:28:52,237 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 193.66666666666666) internal successors, (581), 3 states have internal predecessors, (581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:28:52,240 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 427.0) internal successors, (1708), 4 states have internal predecessors, (1708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:28:52,241 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 427.0) internal successors, (1708), 4 states have internal predecessors, (1708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:28:52,241 INFO L175 Difference]: Start difference. First operand has 46 places, 48 transitions, 117 flow. Second operand 3 states and 581 transitions. [2022-12-13 12:28:52,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 57 transitions, 233 flow [2022-12-13 12:28:52,243 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 57 transitions, 225 flow, removed 4 selfloop flow, removed 0 redundant places. [2022-12-13 12:28:52,244 INFO L231 Difference]: Finished difference. Result has 43 places, 40 transitions, 97 flow [2022-12-13 12:28:52,244 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=427, PETRI_DIFFERENCE_MINUEND_FLOW=95, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=97, PETRI_PLACES=43, PETRI_TRANSITIONS=40} [2022-12-13 12:28:52,244 INFO L288 CegarLoopForPetriNet]: 46 programPoint places, -3 predicate places. [2022-12-13 12:28:52,245 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 40 transitions, 97 flow [2022-12-13 12:28:52,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 176.66666666666666) internal successors, (530), 3 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:28:52,245 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:28:52,245 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 12:28:52,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-13 12:28:52,245 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-12-13 12:28:52,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:28:52,246 INFO L85 PathProgramCache]: Analyzing trace with hash 1242053449, now seen corresponding path program 1 times [2022-12-13 12:28:52,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:28:52,246 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27902815] [2022-12-13 12:28:52,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:28:52,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:28:52,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:28:52,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:28:52,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:28:52,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27902815] [2022-12-13 12:28:52,289 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27902815] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:28:52,289 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:28:52,289 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 12:28:52,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861101337] [2022-12-13 12:28:52,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:28:52,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:28:52,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:28:52,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:28:52,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:28:52,300 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 427 [2022-12-13 12:28:52,301 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 40 transitions, 97 flow. Second operand has 3 states, 3 states have (on average 176.66666666666666) internal successors, (530), 3 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:28:52,301 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:28:52,301 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 427 [2022-12-13 12:28:52,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:28:52,602 INFO L130 PetriNetUnfolder]: 1781/2763 cut-off events. [2022-12-13 12:28:52,602 INFO L131 PetriNetUnfolder]: For 253/253 co-relation queries the response was YES. [2022-12-13 12:28:52,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5372 conditions, 2763 events. 1781/2763 cut-off events. For 253/253 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 16606 event pairs, 132 based on Foata normal form. 0/1857 useless extension candidates. Maximal degree in co-relation 5282. Up to 2059 conditions per place. [2022-12-13 12:28:52,631 INFO L137 encePairwiseOnDemand]: 425/427 looper letters, 41 selfloop transitions, 1 changer transitions 0/56 dead transitions. [2022-12-13 12:28:52,631 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 56 transitions, 223 flow [2022-12-13 12:28:52,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:28:52,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:28:52,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 568 transitions. [2022-12-13 12:28:52,632 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44340359094457454 [2022-12-13 12:28:52,632 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 568 transitions. [2022-12-13 12:28:52,632 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 568 transitions. [2022-12-13 12:28:52,633 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:28:52,633 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 568 transitions. [2022-12-13 12:28:52,633 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 189.33333333333334) internal successors, (568), 3 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:28:52,635 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 427.0) internal successors, (1708), 4 states have internal predecessors, (1708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:28:52,635 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 427.0) internal successors, (1708), 4 states have internal predecessors, (1708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:28:52,635 INFO L175 Difference]: Start difference. First operand has 43 places, 40 transitions, 97 flow. Second operand 3 states and 568 transitions. [2022-12-13 12:28:52,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 56 transitions, 223 flow [2022-12-13 12:28:52,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 56 transitions, 222 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 12:28:52,636 INFO L231 Difference]: Finished difference. Result has 43 places, 39 transitions, 96 flow [2022-12-13 12:28:52,636 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=427, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=96, PETRI_PLACES=43, PETRI_TRANSITIONS=39} [2022-12-13 12:28:52,636 INFO L288 CegarLoopForPetriNet]: 46 programPoint places, -3 predicate places. [2022-12-13 12:28:52,637 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 39 transitions, 96 flow [2022-12-13 12:28:52,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 176.66666666666666) internal successors, (530), 3 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:28:52,637 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:28:52,637 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 12:28:52,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-13 12:28:52,637 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-12-13 12:28:52,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:28:52,638 INFO L85 PathProgramCache]: Analyzing trace with hash 1242053578, now seen corresponding path program 1 times [2022-12-13 12:28:52,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:28:52,638 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77583958] [2022-12-13 12:28:52,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:28:52,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:28:52,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:28:52,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:28:52,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:28:52,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77583958] [2022-12-13 12:28:52,683 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77583958] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:28:52,683 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:28:52,683 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 12:28:52,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909180190] [2022-12-13 12:28:52,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:28:52,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:28:52,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:28:52,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:28:52,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:28:52,692 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 427 [2022-12-13 12:28:52,692 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 39 transitions, 96 flow. Second operand has 3 states, 3 states have (on average 176.66666666666666) internal successors, (530), 3 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:28:52,693 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:28:52,693 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 427 [2022-12-13 12:28:52,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:28:52,941 INFO L130 PetriNetUnfolder]: 1454/2218 cut-off events. [2022-12-13 12:28:52,941 INFO L131 PetriNetUnfolder]: For 229/229 co-relation queries the response was YES. [2022-12-13 12:28:52,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4528 conditions, 2218 events. 1454/2218 cut-off events. For 229/229 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 11804 event pairs, 320 based on Foata normal form. 0/1568 useless extension candidates. Maximal degree in co-relation 4447. Up to 1670 conditions per place. [2022-12-13 12:28:52,958 INFO L137 encePairwiseOnDemand]: 425/427 looper letters, 40 selfloop transitions, 1 changer transitions 0/55 dead transitions. [2022-12-13 12:28:52,958 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 55 transitions, 220 flow [2022-12-13 12:28:52,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:28:52,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:28:52,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 567 transitions. [2022-12-13 12:28:52,960 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4426229508196721 [2022-12-13 12:28:52,960 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 567 transitions. [2022-12-13 12:28:52,960 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 567 transitions. [2022-12-13 12:28:52,961 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:28:52,961 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 567 transitions. [2022-12-13 12:28:52,962 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 189.0) internal successors, (567), 3 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:28:52,964 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 427.0) internal successors, (1708), 4 states have internal predecessors, (1708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:28:52,964 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 427.0) internal successors, (1708), 4 states have internal predecessors, (1708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:28:52,964 INFO L175 Difference]: Start difference. First operand has 43 places, 39 transitions, 96 flow. Second operand 3 states and 567 transitions. [2022-12-13 12:28:52,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 55 transitions, 220 flow [2022-12-13 12:28:52,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 55 transitions, 219 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 12:28:52,966 INFO L231 Difference]: Finished difference. Result has 43 places, 38 transitions, 95 flow [2022-12-13 12:28:52,966 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=427, PETRI_DIFFERENCE_MINUEND_FLOW=93, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=95, PETRI_PLACES=43, PETRI_TRANSITIONS=38} [2022-12-13 12:28:52,967 INFO L288 CegarLoopForPetriNet]: 46 programPoint places, -3 predicate places. [2022-12-13 12:28:52,967 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 38 transitions, 95 flow [2022-12-13 12:28:52,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 176.66666666666666) internal successors, (530), 3 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:28:52,967 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:28:52,967 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:28:52,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-13 12:28:52,967 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-12-13 12:28:52,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:28:52,968 INFO L85 PathProgramCache]: Analyzing trace with hash 1084655881, now seen corresponding path program 1 times [2022-12-13 12:28:52,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:28:52,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055322664] [2022-12-13 12:28:52,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:28:52,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:28:52,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:28:53,016 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 12:28:53,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:28:53,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055322664] [2022-12-13 12:28:53,016 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055322664] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:28:53,016 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:28:53,017 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 12:28:53,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427510857] [2022-12-13 12:28:53,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:28:53,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:28:53,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:28:53,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:28:53,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:28:53,028 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 427 [2022-12-13 12:28:53,029 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 38 transitions, 95 flow. Second operand has 3 states, 3 states have (on average 177.0) internal successors, (531), 3 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:28:53,029 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:28:53,029 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 427 [2022-12-13 12:28:53,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:28:53,284 INFO L130 PetriNetUnfolder]: 1468/2259 cut-off events. [2022-12-13 12:28:53,284 INFO L131 PetriNetUnfolder]: For 223/223 co-relation queries the response was YES. [2022-12-13 12:28:53,289 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4682 conditions, 2259 events. 1468/2259 cut-off events. For 223/223 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 12639 event pairs, 98 based on Foata normal form. 0/1596 useless extension candidates. Maximal degree in co-relation 3441. Up to 1730 conditions per place. [2022-12-13 12:28:53,300 INFO L137 encePairwiseOnDemand]: 425/427 looper letters, 37 selfloop transitions, 1 changer transitions 0/51 dead transitions. [2022-12-13 12:28:53,300 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 51 transitions, 206 flow [2022-12-13 12:28:53,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:28:53,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:28:53,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 564 transitions. [2022-12-13 12:28:53,302 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44028103044496486 [2022-12-13 12:28:53,302 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 564 transitions. [2022-12-13 12:28:53,302 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 564 transitions. [2022-12-13 12:28:53,303 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:28:53,303 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 564 transitions. [2022-12-13 12:28:53,304 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 188.0) internal successors, (564), 3 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:28:53,306 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 427.0) internal successors, (1708), 4 states have internal predecessors, (1708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:28:53,307 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 427.0) internal successors, (1708), 4 states have internal predecessors, (1708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:28:53,307 INFO L175 Difference]: Start difference. First operand has 43 places, 38 transitions, 95 flow. Second operand 3 states and 564 transitions. [2022-12-13 12:28:53,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 51 transitions, 206 flow [2022-12-13 12:28:53,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 51 transitions, 204 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 12:28:53,308 INFO L231 Difference]: Finished difference. Result has 43 places, 37 transitions, 94 flow [2022-12-13 12:28:53,308 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=427, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=94, PETRI_PLACES=43, PETRI_TRANSITIONS=37} [2022-12-13 12:28:53,309 INFO L288 CegarLoopForPetriNet]: 46 programPoint places, -3 predicate places. [2022-12-13 12:28:53,309 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 37 transitions, 94 flow [2022-12-13 12:28:53,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 177.0) internal successors, (531), 3 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:28:53,309 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:28:53,309 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:28:53,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-12-13 12:28:53,309 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-12-13 12:28:53,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:28:53,310 INFO L85 PathProgramCache]: Analyzing trace with hash 1084655992, now seen corresponding path program 1 times [2022-12-13 12:28:53,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:28:53,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057811989] [2022-12-13 12:28:53,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:28:53,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:28:53,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:28:53,351 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 12:28:53,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:28:53,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057811989] [2022-12-13 12:28:53,352 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057811989] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:28:53,352 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:28:53,352 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 12:28:53,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851869025] [2022-12-13 12:28:53,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:28:53,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:28:53,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:28:53,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:28:53,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:28:53,361 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 427 [2022-12-13 12:28:53,362 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 37 transitions, 94 flow. Second operand has 3 states, 3 states have (on average 177.0) internal successors, (531), 3 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:28:53,362 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:28:53,362 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 427 [2022-12-13 12:28:53,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:28:53,555 INFO L130 PetriNetUnfolder]: 1253/1924 cut-off events. [2022-12-13 12:28:53,556 INFO L131 PetriNetUnfolder]: For 171/171 co-relation queries the response was YES. [2022-12-13 12:28:53,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4089 conditions, 1924 events. 1253/1924 cut-off events. For 171/171 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 10166 event pairs, 178 based on Foata normal form. 0/1407 useless extension candidates. Maximal degree in co-relation 3005. Up to 1455 conditions per place. [2022-12-13 12:28:53,568 INFO L137 encePairwiseOnDemand]: 425/427 looper letters, 36 selfloop transitions, 1 changer transitions 0/50 dead transitions. [2022-12-13 12:28:53,568 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 50 transitions, 202 flow [2022-12-13 12:28:53,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:28:53,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:28:53,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 563 transitions. [2022-12-13 12:28:53,570 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43950039032006244 [2022-12-13 12:28:53,570 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 563 transitions. [2022-12-13 12:28:53,570 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 563 transitions. [2022-12-13 12:28:53,570 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:28:53,571 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 563 transitions. [2022-12-13 12:28:53,572 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 187.66666666666666) internal successors, (563), 3 states have internal predecessors, (563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:28:53,574 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 427.0) internal successors, (1708), 4 states have internal predecessors, (1708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:28:53,574 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 427.0) internal successors, (1708), 4 states have internal predecessors, (1708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:28:53,574 INFO L175 Difference]: Start difference. First operand has 43 places, 37 transitions, 94 flow. Second operand 3 states and 563 transitions. [2022-12-13 12:28:53,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 50 transitions, 202 flow [2022-12-13 12:28:53,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 50 transitions, 201 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 12:28:53,576 INFO L231 Difference]: Finished difference. Result has 43 places, 36 transitions, 93 flow [2022-12-13 12:28:53,576 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=427, PETRI_DIFFERENCE_MINUEND_FLOW=91, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=93, PETRI_PLACES=43, PETRI_TRANSITIONS=36} [2022-12-13 12:28:53,576 INFO L288 CegarLoopForPetriNet]: 46 programPoint places, -3 predicate places. [2022-12-13 12:28:53,577 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 36 transitions, 93 flow [2022-12-13 12:28:53,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 177.0) internal successors, (531), 3 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:28:53,577 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:28:53,577 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:28:53,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-12-13 12:28:53,577 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-12-13 12:28:53,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:28:53,578 INFO L85 PathProgramCache]: Analyzing trace with hash 1084656136, now seen corresponding path program 1 times [2022-12-13 12:28:53,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:28:53,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116541935] [2022-12-13 12:28:53,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:28:53,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:28:53,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:28:53,649 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 12:28:53,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:28:53,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116541935] [2022-12-13 12:28:53,650 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116541935] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:28:53,650 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:28:53,650 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 12:28:53,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559387863] [2022-12-13 12:28:53,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:28:53,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:28:53,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:28:53,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:28:53,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:28:53,661 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 427 [2022-12-13 12:28:53,661 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 36 transitions, 93 flow. Second operand has 3 states, 3 states have (on average 177.0) internal successors, (531), 3 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:28:53,662 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:28:53,662 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 427 [2022-12-13 12:28:53,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:28:53,860 INFO L130 PetriNetUnfolder]: 1078/1709 cut-off events. [2022-12-13 12:28:53,860 INFO L131 PetriNetUnfolder]: For 156/156 co-relation queries the response was YES. [2022-12-13 12:28:53,862 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3616 conditions, 1709 events. 1078/1709 cut-off events. For 156/156 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 9130 event pairs, 98 based on Foata normal form. 0/1298 useless extension candidates. Maximal degree in co-relation 2665. Up to 1180 conditions per place. [2022-12-13 12:28:53,867 INFO L137 encePairwiseOnDemand]: 425/427 looper letters, 35 selfloop transitions, 1 changer transitions 0/49 dead transitions. [2022-12-13 12:28:53,867 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 49 transitions, 199 flow [2022-12-13 12:28:53,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:28:53,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:28:53,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 562 transitions. [2022-12-13 12:28:53,870 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43871975019516 [2022-12-13 12:28:53,870 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 562 transitions. [2022-12-13 12:28:53,870 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 562 transitions. [2022-12-13 12:28:53,870 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:28:53,870 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 562 transitions. [2022-12-13 12:28:53,871 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 187.33333333333334) internal successors, (562), 3 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:28:53,873 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 427.0) internal successors, (1708), 4 states have internal predecessors, (1708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:28:53,873 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 427.0) internal successors, (1708), 4 states have internal predecessors, (1708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:28:53,873 INFO L175 Difference]: Start difference. First operand has 43 places, 36 transitions, 93 flow. Second operand 3 states and 562 transitions. [2022-12-13 12:28:53,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 49 transitions, 199 flow [2022-12-13 12:28:53,874 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 49 transitions, 198 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 12:28:53,874 INFO L231 Difference]: Finished difference. Result has 43 places, 35 transitions, 92 flow [2022-12-13 12:28:53,874 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=427, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=92, PETRI_PLACES=43, PETRI_TRANSITIONS=35} [2022-12-13 12:28:53,875 INFO L288 CegarLoopForPetriNet]: 46 programPoint places, -3 predicate places. [2022-12-13 12:28:53,875 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 35 transitions, 92 flow [2022-12-13 12:28:53,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 177.0) internal successors, (531), 3 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:28:53,875 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:28:53,875 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1] [2022-12-13 12:28:53,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-12-13 12:28:53,876 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-12-13 12:28:53,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:28:53,876 INFO L85 PathProgramCache]: Analyzing trace with hash 213605713, now seen corresponding path program 1 times [2022-12-13 12:28:53,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:28:53,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218343513] [2022-12-13 12:28:53,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:28:53,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:28:53,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:28:53,914 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-13 12:28:53,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:28:53,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218343513] [2022-12-13 12:28:53,914 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218343513] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:28:53,914 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:28:53,915 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 12:28:53,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314032930] [2022-12-13 12:28:53,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:28:53,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:28:53,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:28:53,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:28:53,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:28:53,925 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 427 [2022-12-13 12:28:53,926 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 35 transitions, 92 flow. Second operand has 3 states, 3 states have (on average 177.33333333333334) internal successors, (532), 3 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:28:53,926 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:28:53,926 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 427 [2022-12-13 12:28:53,926 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:28:54,084 INFO L130 PetriNetUnfolder]: 1048/1654 cut-off events. [2022-12-13 12:28:54,084 INFO L131 PetriNetUnfolder]: For 156/156 co-relation queries the response was YES. [2022-12-13 12:28:54,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3656 conditions, 1654 events. 1048/1654 cut-off events. For 156/156 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 8357 event pairs, 144 based on Foata normal form. 0/1269 useless extension candidates. Maximal degree in co-relation 2697. Up to 1100 conditions per place. [2022-12-13 12:28:54,090 INFO L137 encePairwiseOnDemand]: 425/427 looper letters, 32 selfloop transitions, 1 changer transitions 0/45 dead transitions. [2022-12-13 12:28:54,091 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 45 transitions, 185 flow [2022-12-13 12:28:54,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:28:54,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:28:54,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 559 transitions. [2022-12-13 12:28:54,093 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43637782982045276 [2022-12-13 12:28:54,093 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 559 transitions. [2022-12-13 12:28:54,093 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 559 transitions. [2022-12-13 12:28:54,094 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:28:54,094 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 559 transitions. [2022-12-13 12:28:54,095 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 186.33333333333334) internal successors, (559), 3 states have internal predecessors, (559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:28:54,096 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 427.0) internal successors, (1708), 4 states have internal predecessors, (1708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:28:54,096 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 427.0) internal successors, (1708), 4 states have internal predecessors, (1708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:28:54,096 INFO L175 Difference]: Start difference. First operand has 43 places, 35 transitions, 92 flow. Second operand 3 states and 559 transitions. [2022-12-13 12:28:54,096 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 45 transitions, 185 flow [2022-12-13 12:28:54,097 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 45 transitions, 183 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 12:28:54,097 INFO L231 Difference]: Finished difference. Result has 43 places, 34 transitions, 91 flow [2022-12-13 12:28:54,097 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=427, PETRI_DIFFERENCE_MINUEND_FLOW=89, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=91, PETRI_PLACES=43, PETRI_TRANSITIONS=34} [2022-12-13 12:28:54,097 INFO L288 CegarLoopForPetriNet]: 46 programPoint places, -3 predicate places. [2022-12-13 12:28:54,097 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 34 transitions, 91 flow [2022-12-13 12:28:54,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 177.33333333333334) internal successors, (532), 3 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:28:54,098 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:28:54,098 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1] [2022-12-13 12:28:54,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-12-13 12:28:54,098 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-12-13 12:28:54,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:28:54,098 INFO L85 PathProgramCache]: Analyzing trace with hash 213605942, now seen corresponding path program 1 times [2022-12-13 12:28:54,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:28:54,098 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744349011] [2022-12-13 12:28:54,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:28:54,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:28:54,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:28:54,131 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-13 12:28:54,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:28:54,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744349011] [2022-12-13 12:28:54,131 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744349011] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:28:54,131 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:28:54,131 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 12:28:54,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033549003] [2022-12-13 12:28:54,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:28:54,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:28:54,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:28:54,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:28:54,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:28:54,142 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 427 [2022-12-13 12:28:54,142 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 34 transitions, 91 flow. Second operand has 3 states, 3 states have (on average 177.33333333333334) internal successors, (532), 3 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:28:54,142 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:28:54,143 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 427 [2022-12-13 12:28:54,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:28:54,290 INFO L130 PetriNetUnfolder]: 923/1479 cut-off events. [2022-12-13 12:28:54,290 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2022-12-13 12:28:54,292 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3296 conditions, 1479 events. 923/1479 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 7365 event pairs, 144 based on Foata normal form. 0/1164 useless extension candidates. Maximal degree in co-relation 2433. Up to 925 conditions per place. [2022-12-13 12:28:54,296 INFO L137 encePairwiseOnDemand]: 425/427 looper letters, 31 selfloop transitions, 1 changer transitions 0/44 dead transitions. [2022-12-13 12:28:54,296 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 44 transitions, 181 flow [2022-12-13 12:28:54,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:28:54,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:28:54,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 558 transitions. [2022-12-13 12:28:54,297 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43559718969555034 [2022-12-13 12:28:54,297 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 558 transitions. [2022-12-13 12:28:54,297 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 558 transitions. [2022-12-13 12:28:54,297 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:28:54,297 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 558 transitions. [2022-12-13 12:28:54,298 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 186.0) internal successors, (558), 3 states have internal predecessors, (558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:28:54,299 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 427.0) internal successors, (1708), 4 states have internal predecessors, (1708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:28:54,299 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 427.0) internal successors, (1708), 4 states have internal predecessors, (1708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:28:54,300 INFO L175 Difference]: Start difference. First operand has 43 places, 34 transitions, 91 flow. Second operand 3 states and 558 transitions. [2022-12-13 12:28:54,300 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 44 transitions, 181 flow [2022-12-13 12:28:54,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 44 transitions, 180 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 12:28:54,301 INFO L231 Difference]: Finished difference. Result has 43 places, 33 transitions, 90 flow [2022-12-13 12:28:54,301 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=427, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=90, PETRI_PLACES=43, PETRI_TRANSITIONS=33} [2022-12-13 12:28:54,301 INFO L288 CegarLoopForPetriNet]: 46 programPoint places, -3 predicate places. [2022-12-13 12:28:54,301 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 33 transitions, 90 flow [2022-12-13 12:28:54,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 177.33333333333334) internal successors, (532), 3 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:28:54,301 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:28:54,301 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1] [2022-12-13 12:28:54,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-12-13 12:28:54,302 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-12-13 12:28:54,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:28:54,302 INFO L85 PathProgramCache]: Analyzing trace with hash 213606070, now seen corresponding path program 1 times [2022-12-13 12:28:54,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:28:54,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568648087] [2022-12-13 12:28:54,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:28:54,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:28:54,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:28:54,341 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-13 12:28:54,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:28:54,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568648087] [2022-12-13 12:28:54,342 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568648087] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:28:54,342 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:28:54,342 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 12:28:54,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870156548] [2022-12-13 12:28:54,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:28:54,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:28:54,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:28:54,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:28:54,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:28:54,351 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 427 [2022-12-13 12:28:54,352 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 33 transitions, 90 flow. Second operand has 3 states, 3 states have (on average 177.33333333333334) internal successors, (532), 3 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:28:54,352 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:28:54,352 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 427 [2022-12-13 12:28:54,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:28:54,471 INFO L130 PetriNetUnfolder]: 798/1304 cut-off events. [2022-12-13 12:28:54,471 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2022-12-13 12:28:54,473 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2936 conditions, 1304 events. 798/1304 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 6378 event pairs, 144 based on Foata normal form. 0/1059 useless extension candidates. Maximal degree in co-relation 2169. Up to 750 conditions per place. [2022-12-13 12:28:54,476 INFO L137 encePairwiseOnDemand]: 425/427 looper letters, 30 selfloop transitions, 1 changer transitions 0/43 dead transitions. [2022-12-13 12:28:54,476 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 43 transitions, 178 flow [2022-12-13 12:28:54,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:28:54,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:28:54,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 557 transitions. [2022-12-13 12:28:54,477 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4348165495706479 [2022-12-13 12:28:54,477 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 557 transitions. [2022-12-13 12:28:54,477 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 557 transitions. [2022-12-13 12:28:54,478 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:28:54,478 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 557 transitions. [2022-12-13 12:28:54,478 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 185.66666666666666) internal successors, (557), 3 states have internal predecessors, (557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:28:54,479 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 427.0) internal successors, (1708), 4 states have internal predecessors, (1708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:28:54,480 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 427.0) internal successors, (1708), 4 states have internal predecessors, (1708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:28:54,480 INFO L175 Difference]: Start difference. First operand has 43 places, 33 transitions, 90 flow. Second operand 3 states and 557 transitions. [2022-12-13 12:28:54,480 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 43 transitions, 178 flow [2022-12-13 12:28:54,480 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 43 transitions, 177 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 12:28:54,481 INFO L231 Difference]: Finished difference. Result has 43 places, 32 transitions, 89 flow [2022-12-13 12:28:54,481 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=427, PETRI_DIFFERENCE_MINUEND_FLOW=87, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=89, PETRI_PLACES=43, PETRI_TRANSITIONS=32} [2022-12-13 12:28:54,481 INFO L288 CegarLoopForPetriNet]: 46 programPoint places, -3 predicate places. [2022-12-13 12:28:54,481 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 32 transitions, 89 flow [2022-12-13 12:28:54,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 177.33333333333334) internal successors, (532), 3 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:28:54,482 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:28:54,482 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2022-12-13 12:28:54,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-12-13 12:28:54,482 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-12-13 12:28:54,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:28:54,482 INFO L85 PathProgramCache]: Analyzing trace with hash -896276165, now seen corresponding path program 1 times [2022-12-13 12:28:54,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:28:54,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746944217] [2022-12-13 12:28:54,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:28:54,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:28:54,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 12:28:54,488 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 12:28:54,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 12:28:54,494 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 12:28:54,494 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 12:28:54,494 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2022-12-13 12:28:54,494 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2022-12-13 12:28:54,494 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2022-12-13 12:28:54,494 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2022-12-13 12:28:54,494 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2022-12-13 12:28:54,494 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2022-12-13 12:28:54,494 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2022-12-13 12:28:54,495 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2022-12-13 12:28:54,495 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 17 remaining) [2022-12-13 12:28:54,495 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 17 remaining) [2022-12-13 12:28:54,495 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 17 remaining) [2022-12-13 12:28:54,495 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2022-12-13 12:28:54,495 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2022-12-13 12:28:54,495 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2022-12-13 12:28:54,495 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2022-12-13 12:28:54,495 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2022-12-13 12:28:54,495 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2022-12-13 12:28:54,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-12-13 12:28:54,495 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:28:54,496 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-13 12:28:54,496 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-12-13 12:28:54,512 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-13 12:28:54,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 237 places, 257 transitions, 546 flow [2022-12-13 12:28:54,541 INFO L130 PetriNetUnfolder]: 33/307 cut-off events. [2022-12-13 12:28:54,542 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2022-12-13 12:28:54,543 INFO L83 FinitePrefix]: Finished finitePrefix Result has 330 conditions, 307 events. 33/307 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 939 event pairs, 0 based on Foata normal form. 0/253 useless extension candidates. Maximal degree in co-relation 247. Up to 10 conditions per place. [2022-12-13 12:28:54,543 INFO L82 GeneralOperation]: Start removeDead. Operand has 237 places, 257 transitions, 546 flow [2022-12-13 12:28:54,545 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 237 places, 257 transitions, 546 flow [2022-12-13 12:28:54,545 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 12:28:54,545 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 237 places, 257 transitions, 546 flow [2022-12-13 12:28:54,546 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 237 places, 257 transitions, 546 flow [2022-12-13 12:28:54,546 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 237 places, 257 transitions, 546 flow [2022-12-13 12:28:54,579 INFO L130 PetriNetUnfolder]: 33/307 cut-off events. [2022-12-13 12:28:54,579 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2022-12-13 12:28:54,580 INFO L83 FinitePrefix]: Finished finitePrefix Result has 330 conditions, 307 events. 33/307 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 939 event pairs, 0 based on Foata normal form. 0/253 useless extension candidates. Maximal degree in co-relation 247. Up to 10 conditions per place. [2022-12-13 12:28:54,592 INFO L119 LiptonReduction]: Number of co-enabled transitions 41688 [2022-12-13 12:28:59,284 INFO L134 LiptonReduction]: Checked pairs total: 60810 [2022-12-13 12:28:59,284 INFO L136 LiptonReduction]: Total number of compositions: 294 [2022-12-13 12:28:59,285 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 12:28:59,285 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;@67bc0eb5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 12:28:59,285 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2022-12-13 12:28:59,286 INFO L130 PetriNetUnfolder]: 1/8 cut-off events. [2022-12-13 12:28:59,286 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 12:28:59,287 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:28:59,287 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 12:28:59,287 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-12-13 12:28:59,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:28:59,287 INFO L85 PathProgramCache]: Analyzing trace with hash 1815289640, now seen corresponding path program 1 times [2022-12-13 12:28:59,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:28:59,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272237565] [2022-12-13 12:28:59,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:28:59,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:28:59,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:28:59,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:28:59,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:28:59,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272237565] [2022-12-13 12:28:59,312 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272237565] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:28:59,312 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:28:59,312 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 12:28:59,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17852577] [2022-12-13 12:28:59,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:28:59,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:28:59,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:28:59,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:28:59,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:28:59,322 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 223 out of 551 [2022-12-13 12:28:59,323 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 62 transitions, 156 flow. Second operand has 3 states, 3 states have (on average 224.66666666666666) internal successors, (674), 3 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:28:59,323 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:28:59,323 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 223 of 551 [2022-12-13 12:28:59,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:29:01,231 INFO L130 PetriNetUnfolder]: 19990/27660 cut-off events. [2022-12-13 12:29:01,231 INFO L131 PetriNetUnfolder]: For 3968/3968 co-relation queries the response was YES. [2022-12-13 12:29:01,266 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54446 conditions, 27660 events. 19990/27660 cut-off events. For 3968/3968 co-relation queries the response was YES. Maximal size of possible extension queue 1435. Compared 183183 event pairs, 1602 based on Foata normal form. 0/17278 useless extension candidates. Maximal degree in co-relation 6476. Up to 21950 conditions per place. [2022-12-13 12:29:01,395 INFO L137 encePairwiseOnDemand]: 540/551 looper letters, 58 selfloop transitions, 1 changer transitions 0/77 dead transitions. [2022-12-13 12:29:01,395 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 77 transitions, 325 flow [2022-12-13 12:29:01,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:29:01,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:29:01,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 745 transitions. [2022-12-13 12:29:01,397 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.45069570477918935 [2022-12-13 12:29:01,397 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 745 transitions. [2022-12-13 12:29:01,397 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 745 transitions. [2022-12-13 12:29:01,398 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:29:01,398 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 745 transitions. [2022-12-13 12:29:01,399 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 248.33333333333334) internal successors, (745), 3 states have internal predecessors, (745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:29:01,403 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 551.0) internal successors, (2204), 4 states have internal predecessors, (2204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:29:01,404 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 551.0) internal successors, (2204), 4 states have internal predecessors, (2204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:29:01,404 INFO L175 Difference]: Start difference. First operand has 59 places, 62 transitions, 156 flow. Second operand 3 states and 745 transitions. [2022-12-13 12:29:01,404 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 77 transitions, 325 flow [2022-12-13 12:29:01,407 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 77 transitions, 307 flow, removed 9 selfloop flow, removed 0 redundant places. [2022-12-13 12:29:01,408 INFO L231 Difference]: Finished difference. Result has 55 places, 52 transitions, 126 flow [2022-12-13 12:29:01,409 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=551, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=126, PETRI_PLACES=55, PETRI_TRANSITIONS=52} [2022-12-13 12:29:01,409 INFO L288 CegarLoopForPetriNet]: 59 programPoint places, -4 predicate places. [2022-12-13 12:29:01,409 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 52 transitions, 126 flow [2022-12-13 12:29:01,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 224.66666666666666) internal successors, (674), 3 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:29:01,410 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:29:01,410 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 12:29:01,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-12-13 12:29:01,410 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-12-13 12:29:01,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:29:01,411 INFO L85 PathProgramCache]: Analyzing trace with hash 1815289992, now seen corresponding path program 1 times [2022-12-13 12:29:01,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:29:01,411 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001154131] [2022-12-13 12:29:01,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:29:01,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:29:01,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:29:01,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:29:01,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:29:01,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001154131] [2022-12-13 12:29:01,474 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001154131] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:29:01,475 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:29:01,475 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 12:29:01,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86197291] [2022-12-13 12:29:01,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:29:01,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:29:01,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:29:01,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:29:01,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:29:01,494 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 221 out of 551 [2022-12-13 12:29:01,495 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 52 transitions, 126 flow. Second operand has 3 states, 3 states have (on average 222.66666666666666) internal successors, (668), 3 states have internal predecessors, (668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:29:01,495 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:29:01,495 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 221 of 551 [2022-12-13 12:29:01,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:29:04,098 INFO L130 PetriNetUnfolder]: 25324/35786 cut-off events. [2022-12-13 12:29:04,098 INFO L131 PetriNetUnfolder]: For 2240/2240 co-relation queries the response was YES. [2022-12-13 12:29:04,158 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70156 conditions, 35786 events. 25324/35786 cut-off events. For 2240/2240 co-relation queries the response was YES. Maximal size of possible extension queue 1826. Compared 242305 event pairs, 16008 based on Foata normal form. 0/22530 useless extension candidates. Maximal degree in co-relation 47041. Up to 24679 conditions per place. [2022-12-13 12:29:04,306 INFO L137 encePairwiseOnDemand]: 547/551 looper letters, 59 selfloop transitions, 2 changer transitions 0/79 dead transitions. [2022-12-13 12:29:04,306 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 79 transitions, 317 flow [2022-12-13 12:29:04,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:29:04,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:29:04,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 726 transitions. [2022-12-13 12:29:04,307 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43920145190562615 [2022-12-13 12:29:04,308 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 726 transitions. [2022-12-13 12:29:04,308 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 726 transitions. [2022-12-13 12:29:04,308 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:29:04,308 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 726 transitions. [2022-12-13 12:29:04,309 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 242.0) internal successors, (726), 3 states have internal predecessors, (726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:29:04,310 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 551.0) internal successors, (2204), 4 states have internal predecessors, (2204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:29:04,311 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 551.0) internal successors, (2204), 4 states have internal predecessors, (2204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:29:04,311 INFO L175 Difference]: Start difference. First operand has 55 places, 52 transitions, 126 flow. Second operand 3 states and 726 transitions. [2022-12-13 12:29:04,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 79 transitions, 317 flow [2022-12-13 12:29:04,312 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 79 transitions, 316 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 12:29:04,313 INFO L231 Difference]: Finished difference. Result has 57 places, 53 transitions, 139 flow [2022-12-13 12:29:04,313 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=551, PETRI_DIFFERENCE_MINUEND_FLOW=125, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=139, PETRI_PLACES=57, PETRI_TRANSITIONS=53} [2022-12-13 12:29:04,313 INFO L288 CegarLoopForPetriNet]: 59 programPoint places, -2 predicate places. [2022-12-13 12:29:04,313 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 53 transitions, 139 flow [2022-12-13 12:29:04,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 222.66666666666666) internal successors, (668), 3 states have internal predecessors, (668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:29:04,313 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:29:04,313 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 12:29:04,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-12-13 12:29:04,313 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-12-13 12:29:04,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:29:04,314 INFO L85 PathProgramCache]: Analyzing trace with hash 1815289802, now seen corresponding path program 1 times [2022-12-13 12:29:04,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:29:04,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986764533] [2022-12-13 12:29:04,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:29:04,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:29:04,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:29:04,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:29:04,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:29:04,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986764533] [2022-12-13 12:29:04,338 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986764533] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:29:04,338 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:29:04,338 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 12:29:04,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750788943] [2022-12-13 12:29:04,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:29:04,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:29:04,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:29:04,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:29:04,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:29:04,348 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 223 out of 551 [2022-12-13 12:29:04,349 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 53 transitions, 139 flow. Second operand has 3 states, 3 states have (on average 224.66666666666666) internal successors, (674), 3 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:29:04,349 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:29:04,349 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 223 of 551 [2022-12-13 12:29:04,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:29:06,627 INFO L130 PetriNetUnfolder]: 19502/26196 cut-off events. [2022-12-13 12:29:06,627 INFO L131 PetriNetUnfolder]: For 4555/4555 co-relation queries the response was YES. [2022-12-13 12:29:06,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57723 conditions, 26196 events. 19502/26196 cut-off events. For 4555/4555 co-relation queries the response was YES. Maximal size of possible extension queue 1326. Compared 153850 event pairs, 5002 based on Foata normal form. 1600/18846 useless extension candidates. Maximal degree in co-relation 57608. Up to 21950 conditions per place. [2022-12-13 12:29:06,808 INFO L137 encePairwiseOnDemand]: 549/551 looper letters, 58 selfloop transitions, 1 changer transitions 0/77 dead transitions. [2022-12-13 12:29:06,808 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 77 transitions, 320 flow [2022-12-13 12:29:06,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:29:06,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:29:06,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 728 transitions. [2022-12-13 12:29:06,812 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44041137326073804 [2022-12-13 12:29:06,812 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 728 transitions. [2022-12-13 12:29:06,812 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 728 transitions. [2022-12-13 12:29:06,812 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:29:06,812 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 728 transitions. [2022-12-13 12:29:06,813 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 242.66666666666666) internal successors, (728), 3 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:29:06,815 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 551.0) internal successors, (2204), 4 states have internal predecessors, (2204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:29:06,816 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 551.0) internal successors, (2204), 4 states have internal predecessors, (2204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:29:06,816 INFO L175 Difference]: Start difference. First operand has 57 places, 53 transitions, 139 flow. Second operand 3 states and 728 transitions. [2022-12-13 12:29:06,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 77 transitions, 320 flow [2022-12-13 12:29:06,818 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 77 transitions, 316 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-12-13 12:29:06,819 INFO L231 Difference]: Finished difference. Result has 57 places, 52 transitions, 135 flow [2022-12-13 12:29:06,819 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=551, PETRI_DIFFERENCE_MINUEND_FLOW=133, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=135, PETRI_PLACES=57, PETRI_TRANSITIONS=52} [2022-12-13 12:29:06,819 INFO L288 CegarLoopForPetriNet]: 59 programPoint places, -2 predicate places. [2022-12-13 12:29:06,820 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 52 transitions, 135 flow [2022-12-13 12:29:06,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 224.66666666666666) internal successors, (674), 3 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:29:06,820 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:29:06,820 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-13 12:29:06,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-12-13 12:29:06,820 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-12-13 12:29:06,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:29:06,821 INFO L85 PathProgramCache]: Analyzing trace with hash 439417591, now seen corresponding path program 1 times [2022-12-13 12:29:06,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:29:06,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646545528] [2022-12-13 12:29:06,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:29:06,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:29:06,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:29:06,841 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:29:06,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:29:06,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646545528] [2022-12-13 12:29:06,841 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646545528] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:29:06,842 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:29:06,842 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 12:29:06,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750050607] [2022-12-13 12:29:06,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:29:06,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:29:06,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:29:06,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:29:06,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:29:06,853 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 223 out of 551 [2022-12-13 12:29:06,854 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 52 transitions, 135 flow. Second operand has 3 states, 3 states have (on average 225.0) internal successors, (675), 3 states have internal predecessors, (675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:29:06,854 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:29:06,854 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 223 of 551 [2022-12-13 12:29:06,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:29:08,550 INFO L130 PetriNetUnfolder]: 17265/24135 cut-off events. [2022-12-13 12:29:08,550 INFO L131 PetriNetUnfolder]: For 3408/3408 co-relation queries the response was YES. [2022-12-13 12:29:08,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50366 conditions, 24135 events. 17265/24135 cut-off events. For 3408/3408 co-relation queries the response was YES. Maximal size of possible extension queue 1184. Compared 158341 event pairs, 1602 based on Foata normal form. 0/16425 useless extension candidates. Maximal degree in co-relation 50266. Up to 18425 conditions per place. [2022-12-13 12:29:08,649 INFO L137 encePairwiseOnDemand]: 549/551 looper letters, 57 selfloop transitions, 1 changer transitions 0/76 dead transitions. [2022-12-13 12:29:08,649 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 76 transitions, 312 flow [2022-12-13 12:29:08,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:29:08,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:29:08,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 727 transitions. [2022-12-13 12:29:08,651 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4398064125831821 [2022-12-13 12:29:08,651 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 727 transitions. [2022-12-13 12:29:08,651 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 727 transitions. [2022-12-13 12:29:08,651 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:29:08,651 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 727 transitions. [2022-12-13 12:29:08,652 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 242.33333333333334) internal successors, (727), 3 states have internal predecessors, (727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:29:08,653 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 551.0) internal successors, (2204), 4 states have internal predecessors, (2204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:29:08,654 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 551.0) internal successors, (2204), 4 states have internal predecessors, (2204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:29:08,654 INFO L175 Difference]: Start difference. First operand has 57 places, 52 transitions, 135 flow. Second operand 3 states and 727 transitions. [2022-12-13 12:29:08,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 76 transitions, 312 flow [2022-12-13 12:29:08,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 76 transitions, 311 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 12:29:08,655 INFO L231 Difference]: Finished difference. Result has 57 places, 51 transitions, 132 flow [2022-12-13 12:29:08,655 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=551, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=132, PETRI_PLACES=57, PETRI_TRANSITIONS=51} [2022-12-13 12:29:08,656 INFO L288 CegarLoopForPetriNet]: 59 programPoint places, -2 predicate places. [2022-12-13 12:29:08,656 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 51 transitions, 132 flow [2022-12-13 12:29:08,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 225.0) internal successors, (675), 3 states have internal predecessors, (675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:29:08,656 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:29:08,656 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:29:08,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-12-13 12:29:08,656 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-12-13 12:29:08,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:29:08,657 INFO L85 PathProgramCache]: Analyzing trace with hash 168949575, now seen corresponding path program 1 times [2022-12-13 12:29:08,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:29:08,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297468375] [2022-12-13 12:29:08,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:29:08,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:29:08,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:29:08,684 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 12:29:08,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:29:08,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297468375] [2022-12-13 12:29:08,685 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297468375] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:29:08,685 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:29:08,685 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 12:29:08,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133710247] [2022-12-13 12:29:08,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:29:08,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:29:08,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:29:08,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:29:08,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:29:08,697 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 223 out of 551 [2022-12-13 12:29:08,698 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 51 transitions, 132 flow. Second operand has 3 states, 3 states have (on average 225.0) internal successors, (675), 3 states have internal predecessors, (675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:29:08,698 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:29:08,698 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 223 of 551 [2022-12-13 12:29:08,698 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:29:10,820 INFO L130 PetriNetUnfolder]: 17133/23715 cut-off events. [2022-12-13 12:29:10,821 INFO L131 PetriNetUnfolder]: For 4198/4198 co-relation queries the response was YES. [2022-12-13 12:29:10,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50740 conditions, 23715 events. 17133/23715 cut-off events. For 4198/4198 co-relation queries the response was YES. Maximal size of possible extension queue 1163. Compared 151668 event pairs, 1367 based on Foata normal form. 0/16249 useless extension candidates. Maximal degree in co-relation 39844. Up to 18792 conditions per place. [2022-12-13 12:29:10,984 INFO L137 encePairwiseOnDemand]: 549/551 looper letters, 55 selfloop transitions, 1 changer transitions 0/73 dead transitions. [2022-12-13 12:29:10,984 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 73 transitions, 308 flow [2022-12-13 12:29:10,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:29:10,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:29:10,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 724 transitions. [2022-12-13 12:29:10,988 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4379915305505142 [2022-12-13 12:29:10,988 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 724 transitions. [2022-12-13 12:29:10,988 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 724 transitions. [2022-12-13 12:29:10,989 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:29:10,989 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 724 transitions. [2022-12-13 12:29:10,991 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 241.33333333333334) internal successors, (724), 3 states have internal predecessors, (724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:29:10,993 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 551.0) internal successors, (2204), 4 states have internal predecessors, (2204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:29:10,994 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 551.0) internal successors, (2204), 4 states have internal predecessors, (2204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:29:10,994 INFO L175 Difference]: Start difference. First operand has 57 places, 51 transitions, 132 flow. Second operand 3 states and 724 transitions. [2022-12-13 12:29:10,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 73 transitions, 308 flow [2022-12-13 12:29:10,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 73 transitions, 306 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 12:29:10,996 INFO L231 Difference]: Finished difference. Result has 57 places, 50 transitions, 131 flow [2022-12-13 12:29:10,997 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=551, PETRI_DIFFERENCE_MINUEND_FLOW=129, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=131, PETRI_PLACES=57, PETRI_TRANSITIONS=50} [2022-12-13 12:29:10,997 INFO L288 CegarLoopForPetriNet]: 59 programPoint places, -2 predicate places. [2022-12-13 12:29:10,997 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 50 transitions, 131 flow [2022-12-13 12:29:10,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 225.0) internal successors, (675), 3 states have internal predecessors, (675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:29:10,997 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:29:10,997 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:29:10,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-12-13 12:29:10,998 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-12-13 12:29:10,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:29:10,998 INFO L85 PathProgramCache]: Analyzing trace with hash 168949895, now seen corresponding path program 1 times [2022-12-13 12:29:10,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:29:10,998 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638822369] [2022-12-13 12:29:10,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:29:10,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:29:11,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:29:11,057 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 12:29:11,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:29:11,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638822369] [2022-12-13 12:29:11,057 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638822369] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:29:11,057 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:29:11,057 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 12:29:11,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425334650] [2022-12-13 12:29:11,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:29:11,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:29:11,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:29:11,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:29:11,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:29:11,068 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 221 out of 551 [2022-12-13 12:29:11,069 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 50 transitions, 131 flow. Second operand has 3 states, 3 states have (on average 223.0) internal successors, (669), 3 states have internal predecessors, (669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:29:11,069 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:29:11,069 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 221 of 551 [2022-12-13 12:29:11,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:29:13,851 INFO L130 PetriNetUnfolder]: 21777/30879 cut-off events. [2022-12-13 12:29:13,851 INFO L131 PetriNetUnfolder]: For 3962/3962 co-relation queries the response was YES. [2022-12-13 12:29:13,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66496 conditions, 30879 events. 21777/30879 cut-off events. For 3962/3962 co-relation queries the response was YES. Maximal size of possible extension queue 1477. Compared 203681 event pairs, 12767 based on Foata normal form. 0/21139 useless extension candidates. Maximal degree in co-relation 52290. Up to 21154 conditions per place. [2022-12-13 12:29:14,078 INFO L137 encePairwiseOnDemand]: 547/551 looper letters, 56 selfloop transitions, 2 changer transitions 0/75 dead transitions. [2022-12-13 12:29:14,078 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 75 transitions, 316 flow [2022-12-13 12:29:14,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:29:14,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:29:14,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 721 transitions. [2022-12-13 12:29:14,080 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4361766485178463 [2022-12-13 12:29:14,080 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 721 transitions. [2022-12-13 12:29:14,080 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 721 transitions. [2022-12-13 12:29:14,081 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:29:14,081 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 721 transitions. [2022-12-13 12:29:14,082 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 240.33333333333334) internal successors, (721), 3 states have internal predecessors, (721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:29:14,084 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 551.0) internal successors, (2204), 4 states have internal predecessors, (2204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:29:14,084 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 551.0) internal successors, (2204), 4 states have internal predecessors, (2204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:29:14,084 INFO L175 Difference]: Start difference. First operand has 57 places, 50 transitions, 131 flow. Second operand 3 states and 721 transitions. [2022-12-13 12:29:14,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 75 transitions, 316 flow [2022-12-13 12:29:14,087 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 75 transitions, 315 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 12:29:14,088 INFO L231 Difference]: Finished difference. Result has 59 places, 51 transitions, 144 flow [2022-12-13 12:29:14,088 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=551, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=144, PETRI_PLACES=59, PETRI_TRANSITIONS=51} [2022-12-13 12:29:14,089 INFO L288 CegarLoopForPetriNet]: 59 programPoint places, 0 predicate places. [2022-12-13 12:29:14,089 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 51 transitions, 144 flow [2022-12-13 12:29:14,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 223.0) internal successors, (669), 3 states have internal predecessors, (669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:29:14,089 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:29:14,089 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:29:14,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-12-13 12:29:14,089 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-12-13 12:29:14,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:29:14,090 INFO L85 PathProgramCache]: Analyzing trace with hash 168949717, now seen corresponding path program 1 times [2022-12-13 12:29:14,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:29:14,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805370417] [2022-12-13 12:29:14,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:29:14,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:29:14,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:29:14,136 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 12:29:14,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:29:14,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805370417] [2022-12-13 12:29:14,137 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805370417] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:29:14,137 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:29:14,137 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 12:29:14,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018531339] [2022-12-13 12:29:14,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:29:14,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:29:14,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:29:14,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:29:14,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:29:14,146 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 223 out of 551 [2022-12-13 12:29:14,147 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 51 transitions, 144 flow. Second operand has 3 states, 3 states have (on average 225.0) internal successors, (675), 3 states have internal predecessors, (675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:29:14,147 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:29:14,147 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 223 of 551 [2022-12-13 12:29:14,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:29:15,924 INFO L130 PetriNetUnfolder]: 16821/22779 cut-off events. [2022-12-13 12:29:15,924 INFO L131 PetriNetUnfolder]: For 5265/5265 co-relation queries the response was YES. [2022-12-13 12:29:15,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54593 conditions, 22779 events. 16821/22779 cut-off events. For 5265/5265 co-relation queries the response was YES. Maximal size of possible extension queue 1090. Compared 134135 event pairs, 3215 based on Foata normal form. 1368/17677 useless extension candidates. Maximal degree in co-relation 43054. Up to 18792 conditions per place. [2022-12-13 12:29:16,052 INFO L137 encePairwiseOnDemand]: 549/551 looper letters, 55 selfloop transitions, 1 changer transitions 0/73 dead transitions. [2022-12-13 12:29:16,052 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 73 transitions, 319 flow [2022-12-13 12:29:16,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:29:16,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:29:16,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 723 transitions. [2022-12-13 12:29:16,054 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43738656987295826 [2022-12-13 12:29:16,054 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 723 transitions. [2022-12-13 12:29:16,054 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 723 transitions. [2022-12-13 12:29:16,054 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:29:16,054 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 723 transitions. [2022-12-13 12:29:16,055 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 241.0) internal successors, (723), 3 states have internal predecessors, (723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:29:16,056 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 551.0) internal successors, (2204), 4 states have internal predecessors, (2204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:29:16,057 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 551.0) internal successors, (2204), 4 states have internal predecessors, (2204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:29:16,057 INFO L175 Difference]: Start difference. First operand has 59 places, 51 transitions, 144 flow. Second operand 3 states and 723 transitions. [2022-12-13 12:29:16,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 73 transitions, 319 flow [2022-12-13 12:29:16,060 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 73 transitions, 315 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-12-13 12:29:16,061 INFO L231 Difference]: Finished difference. Result has 59 places, 50 transitions, 140 flow [2022-12-13 12:29:16,061 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=551, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=140, PETRI_PLACES=59, PETRI_TRANSITIONS=50} [2022-12-13 12:29:16,061 INFO L288 CegarLoopForPetriNet]: 59 programPoint places, 0 predicate places. [2022-12-13 12:29:16,061 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 50 transitions, 140 flow [2022-12-13 12:29:16,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 225.0) internal successors, (675), 3 states have internal predecessors, (675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:29:16,062 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:29:16,062 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:29:16,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-12-13 12:29:16,062 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-12-13 12:29:16,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:29:16,062 INFO L85 PathProgramCache]: Analyzing trace with hash 942481290, now seen corresponding path program 1 times [2022-12-13 12:29:16,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:29:16,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53671605] [2022-12-13 12:29:16,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:29:16,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:29:16,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:29:16,080 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 12:29:16,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:29:16,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53671605] [2022-12-13 12:29:16,081 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53671605] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:29:16,081 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:29:16,081 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 12:29:16,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952454542] [2022-12-13 12:29:16,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:29:16,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:29:16,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:29:16,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:29:16,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:29:16,089 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 223 out of 551 [2022-12-13 12:29:16,089 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 50 transitions, 140 flow. Second operand has 3 states, 3 states have (on average 225.33333333333334) internal successors, (676), 3 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:29:16,089 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:29:16,089 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 223 of 551 [2022-12-13 12:29:16,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:29:17,674 INFO L130 PetriNetUnfolder]: 14487/19761 cut-off events. [2022-12-13 12:29:17,674 INFO L131 PetriNetUnfolder]: For 4581/4581 co-relation queries the response was YES. [2022-12-13 12:29:17,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46361 conditions, 19761 events. 14487/19761 cut-off events. For 4581/4581 co-relation queries the response was YES. Maximal size of possible extension queue 935. Compared 115344 event pairs, 2855 based on Foata normal form. 0/14629 useless extension candidates. Maximal degree in co-relation 36536. Up to 15774 conditions per place. [2022-12-13 12:29:17,813 INFO L137 encePairwiseOnDemand]: 549/551 looper letters, 54 selfloop transitions, 1 changer transitions 0/72 dead transitions. [2022-12-13 12:29:17,814 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 72 transitions, 311 flow [2022-12-13 12:29:17,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:29:17,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:29:17,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 722 transitions. [2022-12-13 12:29:17,817 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4367816091954023 [2022-12-13 12:29:17,817 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 722 transitions. [2022-12-13 12:29:17,817 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 722 transitions. [2022-12-13 12:29:17,818 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:29:17,818 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 722 transitions. [2022-12-13 12:29:17,819 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 240.66666666666666) internal successors, (722), 3 states have internal predecessors, (722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:29:17,822 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 551.0) internal successors, (2204), 4 states have internal predecessors, (2204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:29:17,822 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 551.0) internal successors, (2204), 4 states have internal predecessors, (2204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:29:17,822 INFO L175 Difference]: Start difference. First operand has 59 places, 50 transitions, 140 flow. Second operand 3 states and 722 transitions. [2022-12-13 12:29:17,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 72 transitions, 311 flow [2022-12-13 12:29:17,827 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 72 transitions, 310 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 12:29:17,828 INFO L231 Difference]: Finished difference. Result has 59 places, 49 transitions, 137 flow [2022-12-13 12:29:17,829 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=551, PETRI_DIFFERENCE_MINUEND_FLOW=135, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=137, PETRI_PLACES=59, PETRI_TRANSITIONS=49} [2022-12-13 12:29:17,829 INFO L288 CegarLoopForPetriNet]: 59 programPoint places, 0 predicate places. [2022-12-13 12:29:17,829 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 49 transitions, 137 flow [2022-12-13 12:29:17,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 225.33333333333334) internal successors, (676), 3 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:29:17,829 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:29:17,829 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1] [2022-12-13 12:29:17,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-12-13 12:29:17,830 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-12-13 12:29:17,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:29:17,830 INFO L85 PathProgramCache]: Analyzing trace with hash 1603193237, now seen corresponding path program 1 times [2022-12-13 12:29:17,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:29:17,830 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949209788] [2022-12-13 12:29:17,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:29:17,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:29:17,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:29:17,865 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-13 12:29:17,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:29:17,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949209788] [2022-12-13 12:29:17,865 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949209788] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:29:17,865 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:29:17,865 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 12:29:17,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557618419] [2022-12-13 12:29:17,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:29:17,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:29:17,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:29:17,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:29:17,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:29:17,876 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 223 out of 551 [2022-12-13 12:29:17,877 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 49 transitions, 137 flow. Second operand has 3 states, 3 states have (on average 225.33333333333334) internal successors, (676), 3 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:29:17,877 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:29:17,877 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 223 of 551 [2022-12-13 12:29:17,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:29:19,246 INFO L130 PetriNetUnfolder]: 14679/20373 cut-off events. [2022-12-13 12:29:19,246 INFO L131 PetriNetUnfolder]: For 4895/4895 co-relation queries the response was YES. [2022-12-13 12:29:19,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47657 conditions, 20373 events. 14679/20373 cut-off events. For 4895/4895 co-relation queries the response was YES. Maximal size of possible extension queue 947. Compared 126281 event pairs, 1271 based on Foata normal form. 0/15044 useless extension candidates. Maximal degree in co-relation 37616. Up to 15912 conditions per place. [2022-12-13 12:29:19,375 INFO L137 encePairwiseOnDemand]: 549/551 looper letters, 52 selfloop transitions, 1 changer transitions 0/69 dead transitions. [2022-12-13 12:29:19,375 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 69 transitions, 307 flow [2022-12-13 12:29:19,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:29:19,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:29:19,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 719 transitions. [2022-12-13 12:29:19,377 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43496672716273443 [2022-12-13 12:29:19,377 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 719 transitions. [2022-12-13 12:29:19,377 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 719 transitions. [2022-12-13 12:29:19,377 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:29:19,377 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 719 transitions. [2022-12-13 12:29:19,378 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 239.66666666666666) internal successors, (719), 3 states have internal predecessors, (719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:29:19,379 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 551.0) internal successors, (2204), 4 states have internal predecessors, (2204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:29:19,379 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 551.0) internal successors, (2204), 4 states have internal predecessors, (2204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:29:19,379 INFO L175 Difference]: Start difference. First operand has 59 places, 49 transitions, 137 flow. Second operand 3 states and 719 transitions. [2022-12-13 12:29:19,379 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 69 transitions, 307 flow [2022-12-13 12:29:19,382 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 69 transitions, 305 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 12:29:19,383 INFO L231 Difference]: Finished difference. Result has 59 places, 48 transitions, 136 flow [2022-12-13 12:29:19,383 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=551, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=136, PETRI_PLACES=59, PETRI_TRANSITIONS=48} [2022-12-13 12:29:19,383 INFO L288 CegarLoopForPetriNet]: 59 programPoint places, 0 predicate places. [2022-12-13 12:29:19,383 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 48 transitions, 136 flow [2022-12-13 12:29:19,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 225.33333333333334) internal successors, (676), 3 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:29:19,384 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:29:19,384 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1] [2022-12-13 12:29:19,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-12-13 12:29:19,384 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-12-13 12:29:19,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:29:19,384 INFO L85 PathProgramCache]: Analyzing trace with hash 1603193695, now seen corresponding path program 1 times [2022-12-13 12:29:19,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:29:19,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635543920] [2022-12-13 12:29:19,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:29:19,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:29:19,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:29:19,424 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-13 12:29:19,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:29:19,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635543920] [2022-12-13 12:29:19,424 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635543920] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:29:19,424 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:29:19,425 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 12:29:19,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125666793] [2022-12-13 12:29:19,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:29:19,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:29:19,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:29:19,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:29:19,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:29:19,442 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 221 out of 551 [2022-12-13 12:29:19,442 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 48 transitions, 136 flow. Second operand has 3 states, 3 states have (on average 223.33333333333334) internal successors, (670), 3 states have internal predecessors, (670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:29:19,442 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:29:19,443 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 221 of 551 [2022-12-13 12:29:19,443 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:29:21,794 INFO L130 PetriNetUnfolder]: 18495/25953 cut-off events. [2022-12-13 12:29:21,794 INFO L131 PetriNetUnfolder]: For 5062/5062 co-relation queries the response was YES. [2022-12-13 12:29:21,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61625 conditions, 25953 events. 18495/25953 cut-off events. For 5062/5062 co-relation queries the response was YES. Maximal size of possible extension queue 1181. Compared 163571 event pairs, 11567 based on Foata normal form. 0/19052 useless extension candidates. Maximal degree in co-relation 48680. Up to 18136 conditions per place. [2022-12-13 12:29:21,995 INFO L137 encePairwiseOnDemand]: 547/551 looper letters, 53 selfloop transitions, 2 changer transitions 0/71 dead transitions. [2022-12-13 12:29:21,995 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 71 transitions, 315 flow [2022-12-13 12:29:21,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:29:21,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:29:21,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 716 transitions. [2022-12-13 12:29:21,998 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43315184513006655 [2022-12-13 12:29:21,999 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 716 transitions. [2022-12-13 12:29:21,999 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 716 transitions. [2022-12-13 12:29:21,999 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:29:21,999 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 716 transitions. [2022-12-13 12:29:22,001 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 238.66666666666666) internal successors, (716), 3 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:29:22,004 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 551.0) internal successors, (2204), 4 states have internal predecessors, (2204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:29:22,004 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 551.0) internal successors, (2204), 4 states have internal predecessors, (2204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:29:22,004 INFO L175 Difference]: Start difference. First operand has 59 places, 48 transitions, 136 flow. Second operand 3 states and 716 transitions. [2022-12-13 12:29:22,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 71 transitions, 315 flow [2022-12-13 12:29:22,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 71 transitions, 314 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 12:29:22,014 INFO L231 Difference]: Finished difference. Result has 61 places, 49 transitions, 149 flow [2022-12-13 12:29:22,015 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=551, PETRI_DIFFERENCE_MINUEND_FLOW=135, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=149, PETRI_PLACES=61, PETRI_TRANSITIONS=49} [2022-12-13 12:29:22,015 INFO L288 CegarLoopForPetriNet]: 59 programPoint places, 2 predicate places. [2022-12-13 12:29:22,015 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 49 transitions, 149 flow [2022-12-13 12:29:22,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 223.33333333333334) internal successors, (670), 3 states have internal predecessors, (670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:29:22,016 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:29:22,016 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1] [2022-12-13 12:29:22,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-12-13 12:29:22,016 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-12-13 12:29:22,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:29:22,016 INFO L85 PathProgramCache]: Analyzing trace with hash 1603193527, now seen corresponding path program 1 times [2022-12-13 12:29:22,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:29:22,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739193671] [2022-12-13 12:29:22,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:29:22,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:29:22,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:29:22,056 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-13 12:29:22,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:29:22,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739193671] [2022-12-13 12:29:22,057 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739193671] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:29:22,057 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:29:22,057 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 12:29:22,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788608058] [2022-12-13 12:29:22,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:29:22,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:29:22,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:29:22,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:29:22,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:29:22,067 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 223 out of 551 [2022-12-13 12:29:22,068 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 49 transitions, 149 flow. Second operand has 3 states, 3 states have (on average 225.33333333333334) internal successors, (676), 3 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:29:22,068 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:29:22,068 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 223 of 551 [2022-12-13 12:29:22,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:29:23,552 INFO L130 PetriNetUnfolder]: 14679/20373 cut-off events. [2022-12-13 12:29:23,553 INFO L131 PetriNetUnfolder]: For 5200/5200 co-relation queries the response was YES. [2022-12-13 12:29:23,615 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51690 conditions, 20373 events. 14679/20373 cut-off events. For 5200/5200 co-relation queries the response was YES. Maximal size of possible extension queue 913. Compared 125091 event pairs, 1271 based on Foata normal form. 1152/16772 useless extension candidates. Maximal degree in co-relation 40976. Up to 15912 conditions per place. [2022-12-13 12:29:23,688 INFO L137 encePairwiseOnDemand]: 549/551 looper letters, 52 selfloop transitions, 1 changer transitions 0/69 dead transitions. [2022-12-13 12:29:23,688 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 69 transitions, 318 flow [2022-12-13 12:29:23,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:29:23,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:29:23,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 718 transitions. [2022-12-13 12:29:23,690 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4343617664851785 [2022-12-13 12:29:23,690 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 718 transitions. [2022-12-13 12:29:23,690 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 718 transitions. [2022-12-13 12:29:23,690 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:29:23,691 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 718 transitions. [2022-12-13 12:29:23,691 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 239.33333333333334) internal successors, (718), 3 states have internal predecessors, (718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:29:23,693 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 551.0) internal successors, (2204), 4 states have internal predecessors, (2204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:29:23,693 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 551.0) internal successors, (2204), 4 states have internal predecessors, (2204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:29:23,693 INFO L175 Difference]: Start difference. First operand has 61 places, 49 transitions, 149 flow. Second operand 3 states and 718 transitions. [2022-12-13 12:29:23,693 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 69 transitions, 318 flow [2022-12-13 12:29:23,708 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 69 transitions, 314 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-12-13 12:29:23,709 INFO L231 Difference]: Finished difference. Result has 61 places, 48 transitions, 145 flow [2022-12-13 12:29:23,709 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=551, PETRI_DIFFERENCE_MINUEND_FLOW=143, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=145, PETRI_PLACES=61, PETRI_TRANSITIONS=48} [2022-12-13 12:29:23,709 INFO L288 CegarLoopForPetriNet]: 59 programPoint places, 2 predicate places. [2022-12-13 12:29:23,709 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 48 transitions, 145 flow [2022-12-13 12:29:23,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 225.33333333333334) internal successors, (676), 3 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:29:23,709 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:29:23,710 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:29:23,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-12-13 12:29:23,710 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-12-13 12:29:23,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:29:23,710 INFO L85 PathProgramCache]: Analyzing trace with hash -1840600136, now seen corresponding path program 1 times [2022-12-13 12:29:23,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:29:23,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375221338] [2022-12-13 12:29:23,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:29:23,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:29:23,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:29:23,728 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-13 12:29:23,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:29:23,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375221338] [2022-12-13 12:29:23,728 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375221338] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:29:23,729 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:29:23,729 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 12:29:23,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785904546] [2022-12-13 12:29:23,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:29:23,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:29:23,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:29:23,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:29:23,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:29:23,736 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 223 out of 551 [2022-12-13 12:29:23,737 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 48 transitions, 145 flow. Second operand has 3 states, 3 states have (on average 225.66666666666666) internal successors, (677), 3 states have internal predecessors, (677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:29:23,737 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:29:23,737 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 223 of 551 [2022-12-13 12:29:23,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:29:25,024 INFO L130 PetriNetUnfolder]: 12555/17385 cut-off events. [2022-12-13 12:29:25,024 INFO L131 PetriNetUnfolder]: For 4852/4852 co-relation queries the response was YES. [2022-12-13 12:29:25,074 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43734 conditions, 17385 events. 12555/17385 cut-off events. For 4852/4852 co-relation queries the response was YES. Maximal size of possible extension queue 773. Compared 101893 event pairs, 1847 based on Foata normal form. 0/13760 useless extension candidates. Maximal degree in co-relation 34634. Up to 13356 conditions per place. [2022-12-13 12:29:25,135 INFO L137 encePairwiseOnDemand]: 549/551 looper letters, 51 selfloop transitions, 1 changer transitions 0/68 dead transitions. [2022-12-13 12:29:25,136 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 68 transitions, 310 flow [2022-12-13 12:29:25,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:29:25,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:29:25,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 717 transitions. [2022-12-13 12:29:25,137 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4337568058076225 [2022-12-13 12:29:25,137 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 717 transitions. [2022-12-13 12:29:25,137 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 717 transitions. [2022-12-13 12:29:25,138 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:29:25,138 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 717 transitions. [2022-12-13 12:29:25,139 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 239.0) internal successors, (717), 3 states have internal predecessors, (717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:29:25,140 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 551.0) internal successors, (2204), 4 states have internal predecessors, (2204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:29:25,140 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 551.0) internal successors, (2204), 4 states have internal predecessors, (2204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:29:25,141 INFO L175 Difference]: Start difference. First operand has 61 places, 48 transitions, 145 flow. Second operand 3 states and 717 transitions. [2022-12-13 12:29:25,141 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 68 transitions, 310 flow [2022-12-13 12:29:25,155 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 68 transitions, 309 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 12:29:25,155 INFO L231 Difference]: Finished difference. Result has 61 places, 47 transitions, 142 flow [2022-12-13 12:29:25,155 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=551, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=142, PETRI_PLACES=61, PETRI_TRANSITIONS=47} [2022-12-13 12:29:25,156 INFO L288 CegarLoopForPetriNet]: 59 programPoint places, 2 predicate places. [2022-12-13 12:29:25,156 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 47 transitions, 142 flow [2022-12-13 12:29:25,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 225.66666666666666) internal successors, (677), 3 states have internal predecessors, (677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:29:25,156 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:29:25,156 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:29:25,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-12-13 12:29:25,156 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-12-13 12:29:25,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:29:25,156 INFO L85 PathProgramCache]: Analyzing trace with hash 835964428, now seen corresponding path program 1 times [2022-12-13 12:29:25,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:29:25,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780914756] [2022-12-13 12:29:25,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:29:25,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:29:25,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:29:25,184 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-13 12:29:25,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:29:25,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780914756] [2022-12-13 12:29:25,185 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780914756] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:29:25,185 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:29:25,185 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 12:29:25,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075444832] [2022-12-13 12:29:25,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:29:25,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:29:25,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:29:25,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:29:25,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:29:25,196 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 223 out of 551 [2022-12-13 12:29:25,196 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 47 transitions, 142 flow. Second operand has 3 states, 3 states have (on average 225.66666666666666) internal successors, (677), 3 states have internal predecessors, (677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:29:25,196 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:29:25,196 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 223 of 551 [2022-12-13 12:29:25,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:29:26,518 INFO L130 PetriNetUnfolder]: 12555/17745 cut-off events. [2022-12-13 12:29:26,518 INFO L131 PetriNetUnfolder]: For 5224/5224 co-relation queries the response was YES. [2022-12-13 12:29:26,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44814 conditions, 17745 events. 12555/17745 cut-off events. For 5224/5224 co-relation queries the response was YES. Maximal size of possible extension queue 763. Compared 106623 event pairs, 2075 based on Foata normal form. 0/14054 useless extension candidates. Maximal degree in co-relation 35534. Up to 12096 conditions per place. [2022-12-13 12:29:26,594 INFO L137 encePairwiseOnDemand]: 549/551 looper letters, 49 selfloop transitions, 1 changer transitions 0/65 dead transitions. [2022-12-13 12:29:26,594 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 65 transitions, 306 flow [2022-12-13 12:29:26,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:29:26,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:29:26,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 714 transitions. [2022-12-13 12:29:26,596 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4319419237749546 [2022-12-13 12:29:26,596 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 714 transitions. [2022-12-13 12:29:26,596 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 714 transitions. [2022-12-13 12:29:26,596 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:29:26,596 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 714 transitions. [2022-12-13 12:29:26,597 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 238.0) internal successors, (714), 3 states have internal predecessors, (714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:29:26,598 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 551.0) internal successors, (2204), 4 states have internal predecessors, (2204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:29:26,598 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 551.0) internal successors, (2204), 4 states have internal predecessors, (2204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:29:26,599 INFO L175 Difference]: Start difference. First operand has 61 places, 47 transitions, 142 flow. Second operand 3 states and 714 transitions. [2022-12-13 12:29:26,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 65 transitions, 306 flow [2022-12-13 12:29:26,607 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 65 transitions, 304 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 12:29:26,608 INFO L231 Difference]: Finished difference. Result has 61 places, 46 transitions, 141 flow [2022-12-13 12:29:26,608 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=551, PETRI_DIFFERENCE_MINUEND_FLOW=139, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=141, PETRI_PLACES=61, PETRI_TRANSITIONS=46} [2022-12-13 12:29:26,608 INFO L288 CegarLoopForPetriNet]: 59 programPoint places, 2 predicate places. [2022-12-13 12:29:26,608 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 46 transitions, 141 flow [2022-12-13 12:29:26,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 225.66666666666666) internal successors, (677), 3 states have internal predecessors, (677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:29:26,609 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:29:26,609 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:29:26,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-12-13 12:29:26,609 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-12-13 12:29:26,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:29:26,609 INFO L85 PathProgramCache]: Analyzing trace with hash 835964836, now seen corresponding path program 1 times [2022-12-13 12:29:26,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:29:26,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315772878] [2022-12-13 12:29:26,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:29:26,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:29:26,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:29:26,656 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-13 12:29:26,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:29:26,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315772878] [2022-12-13 12:29:26,657 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315772878] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:29:26,657 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:29:26,657 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 12:29:26,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170873911] [2022-12-13 12:29:26,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:29:26,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:29:26,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:29:26,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:29:26,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:29:26,664 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 223 out of 551 [2022-12-13 12:29:26,665 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 46 transitions, 141 flow. Second operand has 3 states, 3 states have (on average 225.66666666666666) internal successors, (677), 3 states have internal predecessors, (677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:29:26,665 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:29:26,665 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 223 of 551 [2022-12-13 12:29:26,665 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:29:27,801 INFO L130 PetriNetUnfolder]: 11043/15801 cut-off events. [2022-12-13 12:29:27,801 INFO L131 PetriNetUnfolder]: For 3922/3922 co-relation queries the response was YES. [2022-12-13 12:29:27,850 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40062 conditions, 15801 events. 11043/15801 cut-off events. For 3922/3922 co-relation queries the response was YES. Maximal size of possible extension queue 666. Compared 94625 event pairs, 2075 based on Foata normal form. 0/12758 useless extension candidates. Maximal degree in co-relation 31790. Up to 10152 conditions per place. [2022-12-13 12:29:27,905 INFO L137 encePairwiseOnDemand]: 549/551 looper letters, 48 selfloop transitions, 1 changer transitions 0/64 dead transitions. [2022-12-13 12:29:27,905 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 64 transitions, 302 flow [2022-12-13 12:29:27,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:29:27,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:29:27,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 713 transitions. [2022-12-13 12:29:27,907 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43133696309739866 [2022-12-13 12:29:27,907 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 713 transitions. [2022-12-13 12:29:27,907 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 713 transitions. [2022-12-13 12:29:27,908 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:29:27,908 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 713 transitions. [2022-12-13 12:29:27,909 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 237.66666666666666) internal successors, (713), 3 states have internal predecessors, (713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:29:27,911 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 551.0) internal successors, (2204), 4 states have internal predecessors, (2204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:29:27,911 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 551.0) internal successors, (2204), 4 states have internal predecessors, (2204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:29:27,911 INFO L175 Difference]: Start difference. First operand has 61 places, 46 transitions, 141 flow. Second operand 3 states and 713 transitions. [2022-12-13 12:29:27,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 64 transitions, 302 flow [2022-12-13 12:29:27,939 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 64 transitions, 301 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 12:29:27,940 INFO L231 Difference]: Finished difference. Result has 61 places, 45 transitions, 140 flow [2022-12-13 12:29:27,940 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=551, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=140, PETRI_PLACES=61, PETRI_TRANSITIONS=45} [2022-12-13 12:29:27,940 INFO L288 CegarLoopForPetriNet]: 59 programPoint places, 2 predicate places. [2022-12-13 12:29:27,940 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 45 transitions, 140 flow [2022-12-13 12:29:27,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 225.66666666666666) internal successors, (677), 3 states have internal predecessors, (677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:29:27,940 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:29:27,940 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:29:27,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-12-13 12:29:27,941 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-12-13 12:29:27,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:29:27,941 INFO L85 PathProgramCache]: Analyzing trace with hash 835964681, now seen corresponding path program 1 times [2022-12-13 12:29:27,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:29:27,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276693959] [2022-12-13 12:29:27,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:29:27,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:29:27,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:29:27,972 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-13 12:29:27,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:29:27,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276693959] [2022-12-13 12:29:27,972 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276693959] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:29:27,972 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:29:27,972 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 12:29:27,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258719187] [2022-12-13 12:29:27,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:29:27,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:29:27,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:29:27,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:29:27,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:29:27,981 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 223 out of 551 [2022-12-13 12:29:27,982 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 45 transitions, 140 flow. Second operand has 3 states, 3 states have (on average 225.66666666666666) internal successors, (677), 3 states have internal predecessors, (677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:29:27,982 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:29:27,982 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 223 of 551 [2022-12-13 12:29:27,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:29:29,079 INFO L130 PetriNetUnfolder]: 9531/13857 cut-off events. [2022-12-13 12:29:29,079 INFO L131 PetriNetUnfolder]: For 3490/3490 co-relation queries the response was YES. [2022-12-13 12:29:29,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35310 conditions, 13857 events. 9531/13857 cut-off events. For 3490/3490 co-relation queries the response was YES. Maximal size of possible extension queue 571. Compared 83083 event pairs, 2075 based on Foata normal form. 0/11462 useless extension candidates. Maximal degree in co-relation 28046. Up to 8208 conditions per place. [2022-12-13 12:29:29,191 INFO L137 encePairwiseOnDemand]: 549/551 looper letters, 47 selfloop transitions, 1 changer transitions 0/63 dead transitions. [2022-12-13 12:29:29,191 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 63 transitions, 299 flow [2022-12-13 12:29:29,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:29:29,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:29:29,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 712 transitions. [2022-12-13 12:29:29,194 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4307320024198427 [2022-12-13 12:29:29,194 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 712 transitions. [2022-12-13 12:29:29,194 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 712 transitions. [2022-12-13 12:29:29,195 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:29:29,195 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 712 transitions. [2022-12-13 12:29:29,197 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 237.33333333333334) internal successors, (712), 3 states have internal predecessors, (712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:29:29,199 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 551.0) internal successors, (2204), 4 states have internal predecessors, (2204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:29:29,200 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 551.0) internal successors, (2204), 4 states have internal predecessors, (2204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:29:29,200 INFO L175 Difference]: Start difference. First operand has 61 places, 45 transitions, 140 flow. Second operand 3 states and 712 transitions. [2022-12-13 12:29:29,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 63 transitions, 299 flow [2022-12-13 12:29:29,235 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 63 transitions, 298 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 12:29:29,236 INFO L231 Difference]: Finished difference. Result has 61 places, 44 transitions, 139 flow [2022-12-13 12:29:29,236 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=551, PETRI_DIFFERENCE_MINUEND_FLOW=137, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=139, PETRI_PLACES=61, PETRI_TRANSITIONS=44} [2022-12-13 12:29:29,237 INFO L288 CegarLoopForPetriNet]: 59 programPoint places, 2 predicate places. [2022-12-13 12:29:29,237 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 44 transitions, 139 flow [2022-12-13 12:29:29,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 225.66666666666666) internal successors, (677), 3 states have internal predecessors, (677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:29:29,237 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:29:29,237 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2022-12-13 12:29:29,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-12-13 12:29:29,237 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-12-13 12:29:29,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:29:29,238 INFO L85 PathProgramCache]: Analyzing trace with hash 186297538, now seen corresponding path program 1 times [2022-12-13 12:29:29,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:29:29,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885431677] [2022-12-13 12:29:29,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:29:29,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:29:29,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 12:29:29,247 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 12:29:29,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 12:29:29,256 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 12:29:29,256 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 12:29:29,256 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 21 remaining) [2022-12-13 12:29:29,256 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 21 remaining) [2022-12-13 12:29:29,256 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 21 remaining) [2022-12-13 12:29:29,257 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 21 remaining) [2022-12-13 12:29:29,257 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 21 remaining) [2022-12-13 12:29:29,257 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 21 remaining) [2022-12-13 12:29:29,257 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 21 remaining) [2022-12-13 12:29:29,257 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 21 remaining) [2022-12-13 12:29:29,257 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 21 remaining) [2022-12-13 12:29:29,257 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 21 remaining) [2022-12-13 12:29:29,257 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 21 remaining) [2022-12-13 12:29:29,257 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 21 remaining) [2022-12-13 12:29:29,258 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 21 remaining) [2022-12-13 12:29:29,258 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 21 remaining) [2022-12-13 12:29:29,258 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 21 remaining) [2022-12-13 12:29:29,258 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 21 remaining) [2022-12-13 12:29:29,258 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 21 remaining) [2022-12-13 12:29:29,258 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 21 remaining) [2022-12-13 12:29:29,258 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 21 remaining) [2022-12-13 12:29:29,258 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 21 remaining) [2022-12-13 12:29:29,259 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 21 remaining) [2022-12-13 12:29:29,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-12-13 12:29:29,259 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:29:29,259 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-13 12:29:29,259 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2022-12-13 12:29:29,285 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-13 12:29:29,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 287 places, 312 transitions, 669 flow [2022-12-13 12:29:29,330 INFO L130 PetriNetUnfolder]: 41/375 cut-off events. [2022-12-13 12:29:29,330 INFO L131 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2022-12-13 12:29:29,333 INFO L83 FinitePrefix]: Finished finitePrefix Result has 406 conditions, 375 events. 41/375 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1243 event pairs, 0 based on Foata normal form. 0/308 useless extension candidates. Maximal degree in co-relation 320. Up to 12 conditions per place. [2022-12-13 12:29:29,333 INFO L82 GeneralOperation]: Start removeDead. Operand has 287 places, 312 transitions, 669 flow [2022-12-13 12:29:29,335 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 287 places, 312 transitions, 669 flow [2022-12-13 12:29:29,335 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 12:29:29,335 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 287 places, 312 transitions, 669 flow [2022-12-13 12:29:29,335 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 287 places, 312 transitions, 669 flow [2022-12-13 12:29:29,335 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 287 places, 312 transitions, 669 flow [2022-12-13 12:29:29,391 INFO L130 PetriNetUnfolder]: 41/375 cut-off events. [2022-12-13 12:29:29,391 INFO L131 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2022-12-13 12:29:29,393 INFO L83 FinitePrefix]: Finished finitePrefix Result has 406 conditions, 375 events. 41/375 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1243 event pairs, 0 based on Foata normal form. 0/308 useless extension candidates. Maximal degree in co-relation 320. Up to 12 conditions per place. [2022-12-13 12:29:29,413 INFO L119 LiptonReduction]: Number of co-enabled transitions 66960 [2022-12-13 12:29:34,702 INFO L134 LiptonReduction]: Checked pairs total: 96028 [2022-12-13 12:29:34,703 INFO L136 LiptonReduction]: Total number of compositions: 341 [2022-12-13 12:29:34,704 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 12:29:34,705 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;@67bc0eb5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 12:29:34,705 INFO L358 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2022-12-13 12:29:34,706 INFO L130 PetriNetUnfolder]: 1/8 cut-off events. [2022-12-13 12:29:34,706 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 12:29:34,706 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:29:34,706 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 12:29:34,706 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-12-13 12:29:34,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:29:34,707 INFO L85 PathProgramCache]: Analyzing trace with hash -1801632952, now seen corresponding path program 1 times [2022-12-13 12:29:34,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:29:34,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354514338] [2022-12-13 12:29:34,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:29:34,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:29:34,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:29:34,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:29:34,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:29:34,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354514338] [2022-12-13 12:29:34,728 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354514338] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:29:34,728 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:29:34,728 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 12:29:34,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867418225] [2022-12-13 12:29:34,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:29:34,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:29:34,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:29:34,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:29:34,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:29:34,738 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 271 out of 653 [2022-12-13 12:29:34,739 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 76 transitions, 197 flow. Second operand has 3 states, 3 states have (on average 272.6666666666667) internal successors, (818), 3 states have internal predecessors, (818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:29:34,739 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:29:34,739 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 271 of 653 [2022-12-13 12:29:34,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:29:51,253 INFO L130 PetriNetUnfolder]: 175102/220710 cut-off events. [2022-12-13 12:29:51,253 INFO L131 PetriNetUnfolder]: For 42461/42461 co-relation queries the response was YES. [2022-12-13 12:29:51,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 450483 conditions, 220710 events. 175102/220710 cut-off events. For 42461/42461 co-relation queries the response was YES. Maximal size of possible extension queue 8923. Compared 1346112 event pairs, 48784 based on Foata normal form. 0/136087 useless extension candidates. Maximal degree in co-relation 57226. Up to 187276 conditions per place. [2022-12-13 12:29:52,928 INFO L137 encePairwiseOnDemand]: 640/653 looper letters, 74 selfloop transitions, 1 changer transitions 0/97 dead transitions. [2022-12-13 12:29:52,928 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 97 transitions, 421 flow [2022-12-13 12:29:52,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:29:52,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:29:52,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 909 transitions. [2022-12-13 12:29:52,929 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46401225114854516 [2022-12-13 12:29:52,929 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 909 transitions. [2022-12-13 12:29:52,930 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 909 transitions. [2022-12-13 12:29:52,930 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:29:52,930 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 909 transitions. [2022-12-13 12:29:52,931 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 303.0) internal successors, (909), 3 states have internal predecessors, (909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:29:52,932 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 653.0) internal successors, (2612), 4 states have internal predecessors, (2612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:29:52,932 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 653.0) internal successors, (2612), 4 states have internal predecessors, (2612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:29:52,932 INFO L175 Difference]: Start difference. First operand has 72 places, 76 transitions, 197 flow. Second operand 3 states and 909 transitions. [2022-12-13 12:29:52,932 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 97 transitions, 421 flow [2022-12-13 12:29:52,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 97 transitions, 389 flow, removed 16 selfloop flow, removed 0 redundant places. [2022-12-13 12:29:52,955 INFO L231 Difference]: Finished difference. Result has 67 places, 64 transitions, 155 flow [2022-12-13 12:29:52,955 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=653, PETRI_DIFFERENCE_MINUEND_FLOW=153, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=155, PETRI_PLACES=67, PETRI_TRANSITIONS=64} [2022-12-13 12:29:52,955 INFO L288 CegarLoopForPetriNet]: 72 programPoint places, -5 predicate places. [2022-12-13 12:29:52,955 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 64 transitions, 155 flow [2022-12-13 12:29:52,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 272.6666666666667) internal successors, (818), 3 states have internal predecessors, (818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:29:52,955 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:29:52,956 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 12:29:52,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-12-13 12:29:52,956 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-12-13 12:29:52,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:29:52,956 INFO L85 PathProgramCache]: Analyzing trace with hash -1801632454, now seen corresponding path program 1 times [2022-12-13 12:29:52,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:29:52,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324850622] [2022-12-13 12:29:52,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:29:52,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:29:52,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:29:52,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:29:52,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:29:52,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324850622] [2022-12-13 12:29:52,998 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324850622] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:29:52,998 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:29:52,998 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 12:29:52,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48322047] [2022-12-13 12:29:52,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:29:52,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:29:52,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:29:52,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:29:52,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:29:53,013 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 269 out of 653 [2022-12-13 12:29:53,014 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 64 transitions, 155 flow. Second operand has 3 states, 3 states have (on average 270.6666666666667) internal successors, (812), 3 states have internal predecessors, (812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:29:53,014 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:29:53,014 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 269 of 653 [2022-12-13 12:29:53,014 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:30:14,228 INFO L130 PetriNetUnfolder]: 227694/300974 cut-off events. [2022-12-13 12:30:14,228 INFO L131 PetriNetUnfolder]: For 15715/15715 co-relation queries the response was YES. [2022-12-13 12:30:14,945 INFO L83 FinitePrefix]: Finished finitePrefix Result has 591958 conditions, 300974 events. 227694/300974 cut-off events. For 15715/15715 co-relation queries the response was YES. Maximal size of possible extension queue 11992. Compared 2156861 event pairs, 145662 based on Foata normal form. 0/186582 useless extension candidates. Maximal degree in co-relation 396691. Up to 211957 conditions per place. [2022-12-13 12:30:16,156 INFO L137 encePairwiseOnDemand]: 649/653 looper letters, 75 selfloop transitions, 2 changer transitions 0/99 dead transitions. [2022-12-13 12:30:16,156 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 99 transitions, 399 flow [2022-12-13 12:30:16,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:30:16,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:30:16,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 886 transitions. [2022-12-13 12:30:16,158 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.45227156712608474 [2022-12-13 12:30:16,158 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 886 transitions. [2022-12-13 12:30:16,158 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 886 transitions. [2022-12-13 12:30:16,159 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:30:16,159 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 886 transitions. [2022-12-13 12:30:16,160 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 295.3333333333333) internal successors, (886), 3 states have internal predecessors, (886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:30:16,162 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 653.0) internal successors, (2612), 4 states have internal predecessors, (2612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:30:16,163 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 653.0) internal successors, (2612), 4 states have internal predecessors, (2612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:30:16,163 INFO L175 Difference]: Start difference. First operand has 67 places, 64 transitions, 155 flow. Second operand 3 states and 886 transitions. [2022-12-13 12:30:16,163 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 99 transitions, 399 flow [2022-12-13 12:30:16,213 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 99 transitions, 398 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 12:30:16,214 INFO L231 Difference]: Finished difference. Result has 69 places, 65 transitions, 168 flow [2022-12-13 12:30:16,214 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=653, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=168, PETRI_PLACES=69, PETRI_TRANSITIONS=65} [2022-12-13 12:30:16,214 INFO L288 CegarLoopForPetriNet]: 72 programPoint places, -3 predicate places. [2022-12-13 12:30:16,215 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 65 transitions, 168 flow [2022-12-13 12:30:16,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 270.6666666666667) internal successors, (812), 3 states have internal predecessors, (812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:30:16,215 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:30:16,215 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 12:30:16,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-12-13 12:30:16,215 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-12-13 12:30:16,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:30:16,215 INFO L85 PathProgramCache]: Analyzing trace with hash -1801632643, now seen corresponding path program 1 times [2022-12-13 12:30:16,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:30:16,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796859442] [2022-12-13 12:30:16,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:30:16,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:30:16,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:30:16,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:30:16,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:30:16,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796859442] [2022-12-13 12:30:16,236 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796859442] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:30:16,236 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:30:16,236 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 12:30:16,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771752569] [2022-12-13 12:30:16,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:30:16,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:30:16,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:30:16,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:30:16,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:30:16,247 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 271 out of 653 [2022-12-13 12:30:16,247 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 65 transitions, 168 flow. Second operand has 3 states, 3 states have (on average 272.6666666666667) internal successors, (818), 3 states have internal predecessors, (818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:30:16,248 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:30:16,248 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 271 of 653 [2022-12-13 12:30:16,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:30:32,216 INFO L130 PetriNetUnfolder]: 179142/232830 cut-off events. [2022-12-13 12:30:32,216 INFO L131 PetriNetUnfolder]: For 25104/25104 co-relation queries the response was YES. [2022-12-13 12:30:32,979 INFO L83 FinitePrefix]: Finished finitePrefix Result has 492705 conditions, 232830 events. 179142/232830 cut-off events. For 25104/25104 co-relation queries the response was YES. Maximal size of possible extension queue 9073. Compared 1630949 event pairs, 16008 based on Foata normal form. 11204/161600 useless extension candidates. Maximal degree in co-relation 492589. Up to 187276 conditions per place. [2022-12-13 12:30:33,867 INFO L137 encePairwiseOnDemand]: 651/653 looper letters, 74 selfloop transitions, 1 changer transitions 0/97 dead transitions. [2022-12-13 12:30:33,867 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 97 transitions, 402 flow [2022-12-13 12:30:33,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:30:33,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:30:33,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 888 transitions. [2022-12-13 12:30:33,869 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.45329249617151607 [2022-12-13 12:30:33,869 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 888 transitions. [2022-12-13 12:30:33,869 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 888 transitions. [2022-12-13 12:30:33,869 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:30:33,869 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 888 transitions. [2022-12-13 12:30:33,870 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 296.0) internal successors, (888), 3 states have internal predecessors, (888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:30:33,872 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 653.0) internal successors, (2612), 4 states have internal predecessors, (2612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:30:33,872 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 653.0) internal successors, (2612), 4 states have internal predecessors, (2612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:30:33,872 INFO L175 Difference]: Start difference. First operand has 69 places, 65 transitions, 168 flow. Second operand 3 states and 888 transitions. [2022-12-13 12:30:33,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 97 transitions, 402 flow [2022-12-13 12:30:33,895 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 97 transitions, 398 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-12-13 12:30:33,896 INFO L231 Difference]: Finished difference. Result has 69 places, 64 transitions, 164 flow [2022-12-13 12:30:33,896 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=653, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=164, PETRI_PLACES=69, PETRI_TRANSITIONS=64} [2022-12-13 12:30:33,896 INFO L288 CegarLoopForPetriNet]: 72 programPoint places, -3 predicate places. [2022-12-13 12:30:33,896 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 64 transitions, 164 flow [2022-12-13 12:30:33,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 272.6666666666667) internal successors, (818), 3 states have internal predecessors, (818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:30:33,897 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:30:33,897 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-13 12:30:33,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-12-13 12:30:33,897 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-12-13 12:30:33,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:30:33,897 INFO L85 PathProgramCache]: Analyzing trace with hash -16028771, now seen corresponding path program 1 times [2022-12-13 12:30:33,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:30:33,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761292226] [2022-12-13 12:30:33,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:30:33,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:30:33,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:30:33,914 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:30:33,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:30:33,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761292226] [2022-12-13 12:30:33,914 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761292226] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:30:33,914 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:30:33,914 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 12:30:33,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868471365] [2022-12-13 12:30:33,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:30:33,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:30:33,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:30:33,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:30:33,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:30:33,924 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 271 out of 653 [2022-12-13 12:30:33,925 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 64 transitions, 164 flow. Second operand has 3 states, 3 states have (on average 273.0) internal successors, (819), 3 states have internal predecessors, (819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:30:33,925 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:30:33,925 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 271 of 653 [2022-12-13 12:30:33,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:30:48,434 INFO L130 PetriNetUnfolder]: 154465/202551 cut-off events. [2022-12-13 12:30:48,434 INFO L131 PetriNetUnfolder]: For 23904/23904 co-relation queries the response was YES. [2022-12-13 12:30:48,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 419743 conditions, 202551 events. 154465/202551 cut-off events. For 23904/23904 co-relation queries the response was YES. Maximal size of possible extension queue 7813. Compared 1415732 event pairs, 16008 based on Foata normal form. 0/134923 useless extension candidates. Maximal degree in co-relation 419642. Up to 156997 conditions per place. [2022-12-13 12:30:49,700 INFO L137 encePairwiseOnDemand]: 651/653 looper letters, 73 selfloop transitions, 1 changer transitions 0/96 dead transitions. [2022-12-13 12:30:49,700 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 96 transitions, 394 flow [2022-12-13 12:30:49,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:30:49,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:30:49,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 887 transitions. [2022-12-13 12:30:49,702 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.45278203164880043 [2022-12-13 12:30:49,702 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 887 transitions. [2022-12-13 12:30:49,702 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 887 transitions. [2022-12-13 12:30:49,703 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:30:49,703 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 887 transitions. [2022-12-13 12:30:49,704 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 295.6666666666667) internal successors, (887), 3 states have internal predecessors, (887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:30:49,705 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 653.0) internal successors, (2612), 4 states have internal predecessors, (2612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:30:49,705 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 653.0) internal successors, (2612), 4 states have internal predecessors, (2612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:30:49,705 INFO L175 Difference]: Start difference. First operand has 69 places, 64 transitions, 164 flow. Second operand 3 states and 887 transitions. [2022-12-13 12:30:49,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 96 transitions, 394 flow [2022-12-13 12:30:49,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 96 transitions, 393 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 12:30:49,724 INFO L231 Difference]: Finished difference. Result has 69 places, 63 transitions, 161 flow [2022-12-13 12:30:49,724 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=653, PETRI_DIFFERENCE_MINUEND_FLOW=159, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=161, PETRI_PLACES=69, PETRI_TRANSITIONS=63} [2022-12-13 12:30:49,725 INFO L288 CegarLoopForPetriNet]: 72 programPoint places, -3 predicate places. [2022-12-13 12:30:49,725 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 63 transitions, 161 flow [2022-12-13 12:30:49,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 273.0) internal successors, (819), 3 states have internal predecessors, (819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:30:49,725 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:30:49,725 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:30:49,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-12-13 12:30:49,725 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-12-13 12:30:49,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:30:49,726 INFO L85 PathProgramCache]: Analyzing trace with hash 913531354, now seen corresponding path program 1 times [2022-12-13 12:30:49,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:30:49,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196326252] [2022-12-13 12:30:49,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:30:49,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:30:49,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:30:49,750 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 12:30:49,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:30:49,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196326252] [2022-12-13 12:30:49,750 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196326252] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:30:49,750 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:30:49,750 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 12:30:49,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780176800] [2022-12-13 12:30:49,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:30:49,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:30:49,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:30:49,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:30:49,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:30:49,757 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 271 out of 653 [2022-12-13 12:30:49,758 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 63 transitions, 161 flow. Second operand has 3 states, 3 states have (on average 273.0) internal successors, (819), 3 states have internal predecessors, (819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:30:49,758 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:30:49,758 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 271 of 653 [2022-12-13 12:30:49,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:31:03,521 INFO L130 PetriNetUnfolder]: 150621/190791 cut-off events. [2022-12-13 12:31:03,521 INFO L131 PetriNetUnfolder]: For 29508/29508 co-relation queries the response was YES. [2022-12-13 12:31:04,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 413543 conditions, 190791 events. 150621/190791 cut-off events. For 29508/29508 co-relation queries the response was YES. Maximal size of possible extension queue 7282. Compared 1167012 event pairs, 34017 based on Foata normal form. 0/127062 useless extension candidates. Maximal degree in co-relation 327773. Up to 160500 conditions per place. [2022-12-13 12:31:04,779 INFO L137 encePairwiseOnDemand]: 651/653 looper letters, 71 selfloop transitions, 1 changer transitions 0/93 dead transitions. [2022-12-13 12:31:04,780 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 93 transitions, 390 flow [2022-12-13 12:31:04,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:31:04,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:31:04,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 884 transitions. [2022-12-13 12:31:04,782 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4512506380806534 [2022-12-13 12:31:04,782 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 884 transitions. [2022-12-13 12:31:04,782 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 884 transitions. [2022-12-13 12:31:04,782 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:31:04,782 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 884 transitions. [2022-12-13 12:31:04,783 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 294.6666666666667) internal successors, (884), 3 states have internal predecessors, (884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:31:04,784 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 653.0) internal successors, (2612), 4 states have internal predecessors, (2612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:31:04,785 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 653.0) internal successors, (2612), 4 states have internal predecessors, (2612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:31:04,785 INFO L175 Difference]: Start difference. First operand has 69 places, 63 transitions, 161 flow. Second operand 3 states and 884 transitions. [2022-12-13 12:31:04,785 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 93 transitions, 390 flow [2022-12-13 12:31:04,802 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 93 transitions, 388 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 12:31:04,802 INFO L231 Difference]: Finished difference. Result has 69 places, 62 transitions, 160 flow [2022-12-13 12:31:04,803 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=653, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=160, PETRI_PLACES=69, PETRI_TRANSITIONS=62} [2022-12-13 12:31:04,803 INFO L288 CegarLoopForPetriNet]: 72 programPoint places, -3 predicate places. [2022-12-13 12:31:04,803 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 62 transitions, 160 flow [2022-12-13 12:31:04,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 273.0) internal successors, (819), 3 states have internal predecessors, (819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:31:04,803 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:31:04,803 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:31:04,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-12-13 12:31:04,803 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-12-13 12:31:04,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:31:04,804 INFO L85 PathProgramCache]: Analyzing trace with hash 913531715, now seen corresponding path program 1 times [2022-12-13 12:31:04,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:31:04,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933500979] [2022-12-13 12:31:04,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:31:04,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:31:04,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:31:04,836 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 12:31:04,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:31:04,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933500979] [2022-12-13 12:31:04,836 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933500979] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:31:04,836 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:31:04,836 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 12:31:04,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941431592] [2022-12-13 12:31:04,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:31:04,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:31:04,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:31:04,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:31:04,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:31:04,844 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 271 out of 653 [2022-12-13 12:31:04,845 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 62 transitions, 160 flow. Second operand has 3 states, 3 states have (on average 273.0) internal successors, (819), 3 states have internal predecessors, (819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:31:04,845 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:31:04,845 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 271 of 653 [2022-12-13 12:31:04,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:31:16,498 INFO L130 PetriNetUnfolder]: 129471/164841 cut-off events. [2022-12-13 12:31:16,498 INFO L131 PetriNetUnfolder]: For 20474/20474 co-relation queries the response was YES. [2022-12-13 12:31:16,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 360617 conditions, 164841 events. 129471/164841 cut-off events. For 20474/20474 co-relation queries the response was YES. Maximal size of possible extension queue 6261. Compared 1005756 event pairs, 30129 based on Foata normal form. 0/112543 useless extension candidates. Maximal degree in co-relation 286068. Up to 134550 conditions per place. [2022-12-13 12:31:17,621 INFO L137 encePairwiseOnDemand]: 651/653 looper letters, 70 selfloop transitions, 1 changer transitions 0/92 dead transitions. [2022-12-13 12:31:17,621 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 92 transitions, 386 flow [2022-12-13 12:31:17,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:31:17,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:31:17,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 883 transitions. [2022-12-13 12:31:17,623 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4507401735579377 [2022-12-13 12:31:17,623 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 883 transitions. [2022-12-13 12:31:17,623 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 883 transitions. [2022-12-13 12:31:17,623 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:31:17,623 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 883 transitions. [2022-12-13 12:31:17,624 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 294.3333333333333) internal successors, (883), 3 states have internal predecessors, (883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:31:17,625 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 653.0) internal successors, (2612), 4 states have internal predecessors, (2612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:31:17,626 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 653.0) internal successors, (2612), 4 states have internal predecessors, (2612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:31:17,626 INFO L175 Difference]: Start difference. First operand has 69 places, 62 transitions, 160 flow. Second operand 3 states and 883 transitions. [2022-12-13 12:31:17,626 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 92 transitions, 386 flow [2022-12-13 12:31:17,641 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 92 transitions, 385 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 12:31:17,642 INFO L231 Difference]: Finished difference. Result has 69 places, 61 transitions, 159 flow [2022-12-13 12:31:17,642 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=653, PETRI_DIFFERENCE_MINUEND_FLOW=157, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=159, PETRI_PLACES=69, PETRI_TRANSITIONS=61} [2022-12-13 12:31:17,643 INFO L288 CegarLoopForPetriNet]: 72 programPoint places, -3 predicate places. [2022-12-13 12:31:17,643 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 61 transitions, 159 flow [2022-12-13 12:31:17,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 273.0) internal successors, (819), 3 states have internal predecessors, (819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:31:17,643 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:31:17,643 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:31:17,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-12-13 12:31:17,643 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-12-13 12:31:17,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:31:17,643 INFO L85 PathProgramCache]: Analyzing trace with hash 913531934, now seen corresponding path program 1 times [2022-12-13 12:31:17,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:31:17,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481593074] [2022-12-13 12:31:17,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:31:17,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:31:17,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:31:17,670 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 12:31:17,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:31:17,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481593074] [2022-12-13 12:31:17,671 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481593074] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:31:17,671 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:31:17,671 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 12:31:17,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589744101] [2022-12-13 12:31:17,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:31:17,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:31:17,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:31:17,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:31:17,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:31:17,678 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 271 out of 653 [2022-12-13 12:31:17,679 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 61 transitions, 159 flow. Second operand has 3 states, 3 states have (on average 273.0) internal successors, (819), 3 states have internal predecessors, (819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:31:17,679 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:31:17,679 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 271 of 653 [2022-12-13 12:31:17,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:31:27,979 INFO L130 PetriNetUnfolder]: 108321/138891 cut-off events. [2022-12-13 12:31:27,979 INFO L131 PetriNetUnfolder]: For 17848/17848 co-relation queries the response was YES. [2022-12-13 12:31:28,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 307691 conditions, 138891 events. 108321/138891 cut-off events. For 17848/17848 co-relation queries the response was YES. Maximal size of possible extension queue 5246. Compared 844073 event pairs, 26241 based on Foata normal form. 0/98025 useless extension candidates. Maximal degree in co-relation 244363. Up to 108600 conditions per place. [2022-12-13 12:31:28,883 INFO L137 encePairwiseOnDemand]: 651/653 looper letters, 69 selfloop transitions, 1 changer transitions 0/91 dead transitions. [2022-12-13 12:31:28,884 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 91 transitions, 383 flow [2022-12-13 12:31:28,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:31:28,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:31:28,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 882 transitions. [2022-12-13 12:31:28,886 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.450229709035222 [2022-12-13 12:31:28,886 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 882 transitions. [2022-12-13 12:31:28,886 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 882 transitions. [2022-12-13 12:31:28,887 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:31:28,887 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 882 transitions. [2022-12-13 12:31:28,888 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 294.0) internal successors, (882), 3 states have internal predecessors, (882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:31:28,891 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 653.0) internal successors, (2612), 4 states have internal predecessors, (2612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:31:28,891 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 653.0) internal successors, (2612), 4 states have internal predecessors, (2612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:31:28,891 INFO L175 Difference]: Start difference. First operand has 69 places, 61 transitions, 159 flow. Second operand 3 states and 882 transitions. [2022-12-13 12:31:28,892 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 91 transitions, 383 flow [2022-12-13 12:31:28,911 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 91 transitions, 382 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 12:31:28,913 INFO L231 Difference]: Finished difference. Result has 69 places, 60 transitions, 158 flow [2022-12-13 12:31:28,913 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=653, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=158, PETRI_PLACES=69, PETRI_TRANSITIONS=60} [2022-12-13 12:31:28,913 INFO L288 CegarLoopForPetriNet]: 72 programPoint places, -3 predicate places. [2022-12-13 12:31:28,913 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 60 transitions, 158 flow [2022-12-13 12:31:28,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 273.0) internal successors, (819), 3 states have internal predecessors, (819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:31:28,914 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:31:28,914 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1] [2022-12-13 12:31:28,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-12-13 12:31:28,914 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-12-13 12:31:28,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:31:28,914 INFO L85 PathProgramCache]: Analyzing trace with hash -1415369032, now seen corresponding path program 1 times [2022-12-13 12:31:28,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:31:28,915 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423413481] [2022-12-13 12:31:28,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:31:28,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:31:28,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:31:28,950 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-13 12:31:28,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:31:28,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423413481] [2022-12-13 12:31:28,950 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423413481] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:31:28,951 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:31:28,951 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 12:31:28,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626689483] [2022-12-13 12:31:28,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:31:28,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:31:28,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:31:28,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:31:28,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:31:28,961 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 271 out of 653 [2022-12-13 12:31:28,962 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 60 transitions, 158 flow. Second operand has 3 states, 3 states have (on average 273.3333333333333) internal successors, (820), 3 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:31:28,962 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:31:28,962 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 271 of 653 [2022-12-13 12:31:28,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:31:39,599 INFO L130 PetriNetUnfolder]: 109675/142593 cut-off events. [2022-12-13 12:31:39,600 INFO L131 PetriNetUnfolder]: For 17824/17824 co-relation queries the response was YES. [2022-12-13 12:31:40,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 316121 conditions, 142593 events. 109675/142593 cut-off events. For 17824/17824 co-relation queries the response was YES. Maximal size of possible extension queue 5369. Compared 943158 event pairs, 9625 based on Foata normal form. 0/100462 useless extension candidates. Maximal degree in co-relation 251387. Up to 114480 conditions per place. [2022-12-13 12:31:40,615 INFO L137 encePairwiseOnDemand]: 651/653 looper letters, 66 selfloop transitions, 1 changer transitions 0/87 dead transitions. [2022-12-13 12:31:40,615 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 87 transitions, 369 flow [2022-12-13 12:31:40,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:31:40,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:31:40,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 879 transitions. [2022-12-13 12:31:40,617 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44869831546707506 [2022-12-13 12:31:40,617 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 879 transitions. [2022-12-13 12:31:40,617 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 879 transitions. [2022-12-13 12:31:40,617 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:31:40,617 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 879 transitions. [2022-12-13 12:31:40,618 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 293.0) internal successors, (879), 3 states have internal predecessors, (879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:31:40,620 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 653.0) internal successors, (2612), 4 states have internal predecessors, (2612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:31:40,620 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 653.0) internal successors, (2612), 4 states have internal predecessors, (2612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:31:40,620 INFO L175 Difference]: Start difference. First operand has 69 places, 60 transitions, 158 flow. Second operand 3 states and 879 transitions. [2022-12-13 12:31:40,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 87 transitions, 369 flow [2022-12-13 12:31:40,633 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 87 transitions, 367 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 12:31:40,634 INFO L231 Difference]: Finished difference. Result has 69 places, 59 transitions, 157 flow [2022-12-13 12:31:40,634 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=653, PETRI_DIFFERENCE_MINUEND_FLOW=155, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=157, PETRI_PLACES=69, PETRI_TRANSITIONS=59} [2022-12-13 12:31:40,634 INFO L288 CegarLoopForPetriNet]: 72 programPoint places, -3 predicate places. [2022-12-13 12:31:40,634 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 59 transitions, 157 flow [2022-12-13 12:31:40,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 273.3333333333333) internal successors, (820), 3 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:31:40,635 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:31:40,635 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1] [2022-12-13 12:31:40,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-12-13 12:31:40,635 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-12-13 12:31:40,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:31:40,635 INFO L85 PathProgramCache]: Analyzing trace with hash -1415368830, now seen corresponding path program 1 times [2022-12-13 12:31:40,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:31:40,635 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747177572] [2022-12-13 12:31:40,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:31:40,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:31:40,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:31:40,662 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-13 12:31:40,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:31:40,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747177572] [2022-12-13 12:31:40,662 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747177572] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:31:40,662 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:31:40,662 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 12:31:40,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412012706] [2022-12-13 12:31:40,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:31:40,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:31:40,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:31:40,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:31:40,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:31:40,673 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 271 out of 653 [2022-12-13 12:31:40,674 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 59 transitions, 157 flow. Second operand has 3 states, 3 states have (on average 273.3333333333333) internal successors, (820), 3 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:31:40,674 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:31:40,674 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 271 of 653 [2022-12-13 12:31:40,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:31:49,510 INFO L130 PetriNetUnfolder]: 94585/124083 cut-off events. [2022-12-13 12:31:49,510 INFO L131 PetriNetUnfolder]: For 14565/14565 co-relation queries the response was YES. [2022-12-13 12:31:49,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 276329 conditions, 124083 events. 94585/124083 cut-off events. For 14565/14565 co-relation queries the response was YES. Maximal size of possible extension queue 4660. Compared 823244 event pairs, 9625 based on Foata normal form. 0/89326 useless extension candidates. Maximal degree in co-relation 219937. Up to 95970 conditions per place. [2022-12-13 12:31:50,395 INFO L137 encePairwiseOnDemand]: 651/653 looper letters, 65 selfloop transitions, 1 changer transitions 0/86 dead transitions. [2022-12-13 12:31:50,395 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 86 transitions, 365 flow [2022-12-13 12:31:50,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:31:50,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:31:50,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 878 transitions. [2022-12-13 12:31:50,397 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44818785094435937 [2022-12-13 12:31:50,397 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 878 transitions. [2022-12-13 12:31:50,397 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 878 transitions. [2022-12-13 12:31:50,398 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:31:50,398 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 878 transitions. [2022-12-13 12:31:50,399 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 292.6666666666667) internal successors, (878), 3 states have internal predecessors, (878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:31:50,400 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 653.0) internal successors, (2612), 4 states have internal predecessors, (2612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:31:50,400 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 653.0) internal successors, (2612), 4 states have internal predecessors, (2612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:31:50,400 INFO L175 Difference]: Start difference. First operand has 69 places, 59 transitions, 157 flow. Second operand 3 states and 878 transitions. [2022-12-13 12:31:50,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 86 transitions, 365 flow [2022-12-13 12:31:50,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 86 transitions, 364 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 12:31:50,435 INFO L231 Difference]: Finished difference. Result has 69 places, 58 transitions, 156 flow [2022-12-13 12:31:50,435 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=653, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=156, PETRI_PLACES=69, PETRI_TRANSITIONS=58} [2022-12-13 12:31:50,435 INFO L288 CegarLoopForPetriNet]: 72 programPoint places, -3 predicate places. [2022-12-13 12:31:50,435 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 58 transitions, 156 flow [2022-12-13 12:31:50,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 273.3333333333333) internal successors, (820), 3 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:31:50,436 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:31:50,436 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1] [2022-12-13 12:31:50,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-12-13 12:31:50,436 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-12-13 12:31:50,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:31:50,436 INFO L85 PathProgramCache]: Analyzing trace with hash -1415368580, now seen corresponding path program 1 times [2022-12-13 12:31:50,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:31:50,436 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018753990] [2022-12-13 12:31:50,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:31:50,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:31:50,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:31:50,467 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-13 12:31:50,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:31:50,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018753990] [2022-12-13 12:31:50,468 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018753990] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:31:50,468 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:31:50,468 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 12:31:50,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788589688] [2022-12-13 12:31:50,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:31:50,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:31:50,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:31:50,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:31:50,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:31:50,479 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 269 out of 653 [2022-12-13 12:31:50,480 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 58 transitions, 156 flow. Second operand has 3 states, 3 states have (on average 271.3333333333333) internal successors, (814), 3 states have internal predecessors, (814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:31:50,480 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:31:50,480 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 269 of 653 [2022-12-13 12:31:50,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:32:01,219 INFO L130 PetriNetUnfolder]: 109075/145773 cut-off events. [2022-12-13 12:32:01,219 INFO L131 PetriNetUnfolder]: For 16185/16185 co-relation queries the response was YES. [2022-12-13 12:32:01,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 327041 conditions, 145773 events. 109075/145773 cut-off events. For 16185/16185 co-relation queries the response was YES. Maximal size of possible extension queue 5303. Compared 981392 event pairs, 69205 based on Foata normal form. 0/106372 useless extension candidates. Maximal degree in co-relation 260487. Up to 111268 conditions per place. [2022-12-13 12:32:02,240 INFO L137 encePairwiseOnDemand]: 649/653 looper letters, 65 selfloop transitions, 2 changer transitions 0/87 dead transitions. [2022-12-13 12:32:02,240 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 87 transitions, 370 flow [2022-12-13 12:32:02,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:32:02,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:32:02,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 874 transitions. [2022-12-13 12:32:02,242 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4461459928534967 [2022-12-13 12:32:02,242 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 874 transitions. [2022-12-13 12:32:02,242 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 874 transitions. [2022-12-13 12:32:02,243 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:32:02,243 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 874 transitions. [2022-12-13 12:32:02,244 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 291.3333333333333) internal successors, (874), 3 states have internal predecessors, (874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:32:02,245 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 653.0) internal successors, (2612), 4 states have internal predecessors, (2612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:32:02,245 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 653.0) internal successors, (2612), 4 states have internal predecessors, (2612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:32:02,245 INFO L175 Difference]: Start difference. First operand has 69 places, 58 transitions, 156 flow. Second operand 3 states and 874 transitions. [2022-12-13 12:32:02,246 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 87 transitions, 370 flow [2022-12-13 12:32:02,285 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 87 transitions, 369 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 12:32:02,286 INFO L231 Difference]: Finished difference. Result has 71 places, 59 transitions, 169 flow [2022-12-13 12:32:02,286 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=653, PETRI_DIFFERENCE_MINUEND_FLOW=155, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=169, PETRI_PLACES=71, PETRI_TRANSITIONS=59} [2022-12-13 12:32:02,286 INFO L288 CegarLoopForPetriNet]: 72 programPoint places, -1 predicate places. [2022-12-13 12:32:02,286 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 59 transitions, 169 flow [2022-12-13 12:32:02,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 271.3333333333333) internal successors, (814), 3 states have internal predecessors, (814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:32:02,286 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:32:02,286 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:32:02,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2022-12-13 12:32:02,286 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-12-13 12:32:02,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:32:02,287 INFO L85 PathProgramCache]: Analyzing trace with hash -926750154, now seen corresponding path program 1 times [2022-12-13 12:32:02,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:32:02,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111151303] [2022-12-13 12:32:02,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:32:02,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:32:02,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:32:02,303 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-13 12:32:02,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:32:02,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111151303] [2022-12-13 12:32:02,303 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111151303] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:32:02,303 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:32:02,303 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 12:32:02,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588885104] [2022-12-13 12:32:02,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:32:02,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:32:02,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:32:02,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:32:02,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:32:02,311 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 271 out of 653 [2022-12-13 12:32:02,311 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 59 transitions, 169 flow. Second operand has 3 states, 3 states have (on average 273.6666666666667) internal successors, (821), 3 states have internal predecessors, (821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:32:02,311 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:32:02,311 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 271 of 653 [2022-12-13 12:32:02,311 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:32:11,535 INFO L130 PetriNetUnfolder]: 93025/119403 cut-off events. [2022-12-13 12:32:11,535 INFO L131 PetriNetUnfolder]: For 24501/24501 co-relation queries the response was YES. [2022-12-13 12:32:12,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 292170 conditions, 119403 events. 93025/119403 cut-off events. For 24501/24501 co-relation queries the response was YES. Maximal size of possible extension queue 4320. Compared 723239 event pairs, 17065 based on Foata normal form. 0/89626 useless extension candidates. Maximal degree in co-relation 233137. Up to 95970 conditions per place. [2022-12-13 12:32:12,512 INFO L137 encePairwiseOnDemand]: 651/653 looper letters, 65 selfloop transitions, 1 changer transitions 0/86 dead transitions. [2022-12-13 12:32:12,512 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 86 transitions, 375 flow [2022-12-13 12:32:12,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:32:12,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:32:12,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 877 transitions. [2022-12-13 12:32:12,514 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4476773864216437 [2022-12-13 12:32:12,514 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 877 transitions. [2022-12-13 12:32:12,514 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 877 transitions. [2022-12-13 12:32:12,514 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:32:12,514 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 877 transitions. [2022-12-13 12:32:12,515 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 292.3333333333333) internal successors, (877), 3 states have internal predecessors, (877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:32:12,517 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 653.0) internal successors, (2612), 4 states have internal predecessors, (2612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:32:12,517 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 653.0) internal successors, (2612), 4 states have internal predecessors, (2612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:32:12,517 INFO L175 Difference]: Start difference. First operand has 71 places, 59 transitions, 169 flow. Second operand 3 states and 877 transitions. [2022-12-13 12:32:12,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 86 transitions, 375 flow [2022-12-13 12:32:12,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 86 transitions, 371 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-12-13 12:32:12,563 INFO L231 Difference]: Finished difference. Result has 71 places, 58 transitions, 163 flow [2022-12-13 12:32:12,563 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=653, PETRI_DIFFERENCE_MINUEND_FLOW=161, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=163, PETRI_PLACES=71, PETRI_TRANSITIONS=58} [2022-12-13 12:32:12,563 INFO L288 CegarLoopForPetriNet]: 72 programPoint places, -1 predicate places. [2022-12-13 12:32:12,563 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 58 transitions, 163 flow [2022-12-13 12:32:12,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 273.6666666666667) internal successors, (821), 3 states have internal predecessors, (821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:32:12,564 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:32:12,564 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:32:12,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2022-12-13 12:32:12,564 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-12-13 12:32:12,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:32:12,564 INFO L85 PathProgramCache]: Analyzing trace with hash 1044734617, now seen corresponding path program 1 times [2022-12-13 12:32:12,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:32:12,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639986646] [2022-12-13 12:32:12,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:32:12,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:32:12,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:32:12,589 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-13 12:32:12,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:32:12,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639986646] [2022-12-13 12:32:12,589 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639986646] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:32:12,589 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:32:12,589 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 12:32:12,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393219092] [2022-12-13 12:32:12,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:32:12,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:32:12,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:32:12,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:32:12,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:32:12,598 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 271 out of 653 [2022-12-13 12:32:12,599 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 58 transitions, 163 flow. Second operand has 3 states, 3 states have (on average 273.6666666666667) internal successors, (821), 3 states have internal predecessors, (821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:32:12,599 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:32:12,599 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 271 of 653 [2022-12-13 12:32:12,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:32:21,440 INFO L130 PetriNetUnfolder]: 93265/120303 cut-off events. [2022-12-13 12:32:21,440 INFO L131 PetriNetUnfolder]: For 24501/24501 co-relation queries the response was YES. [2022-12-13 12:32:21,832 INFO L83 FinitePrefix]: Finished finitePrefix Result has 289650 conditions, 120303 events. 93265/120303 cut-off events. For 24501/24501 co-relation queries the response was YES. Maximal size of possible extension queue 4311. Compared 745150 event pairs, 12601 based on Foata normal form. 0/90262 useless extension candidates. Maximal degree in co-relation 231037. Up to 96840 conditions per place. [2022-12-13 12:32:22,277 INFO L137 encePairwiseOnDemand]: 651/653 looper letters, 63 selfloop transitions, 1 changer transitions 0/83 dead transitions. [2022-12-13 12:32:22,277 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 83 transitions, 368 flow [2022-12-13 12:32:22,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:32:22,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:32:22,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 874 transitions. [2022-12-13 12:32:22,279 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4461459928534967 [2022-12-13 12:32:22,279 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 874 transitions. [2022-12-13 12:32:22,279 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 874 transitions. [2022-12-13 12:32:22,279 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:32:22,279 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 874 transitions. [2022-12-13 12:32:22,280 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 291.3333333333333) internal successors, (874), 3 states have internal predecessors, (874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:32:22,282 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 653.0) internal successors, (2612), 4 states have internal predecessors, (2612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:32:22,282 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 653.0) internal successors, (2612), 4 states have internal predecessors, (2612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:32:22,282 INFO L175 Difference]: Start difference. First operand has 71 places, 58 transitions, 163 flow. Second operand 3 states and 874 transitions. [2022-12-13 12:32:22,282 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 83 transitions, 368 flow [2022-12-13 12:32:22,323 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 83 transitions, 366 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 12:32:22,324 INFO L231 Difference]: Finished difference. Result has 71 places, 57 transitions, 162 flow [2022-12-13 12:32:22,324 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=653, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=162, PETRI_PLACES=71, PETRI_TRANSITIONS=57} [2022-12-13 12:32:22,324 INFO L288 CegarLoopForPetriNet]: 72 programPoint places, -1 predicate places. [2022-12-13 12:32:22,324 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 57 transitions, 162 flow [2022-12-13 12:32:22,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 273.6666666666667) internal successors, (821), 3 states have internal predecessors, (821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:32:22,324 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:32:22,324 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:32:22,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2022-12-13 12:32:22,324 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-12-13 12:32:22,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:32:22,325 INFO L85 PathProgramCache]: Analyzing trace with hash 1044735000, now seen corresponding path program 1 times [2022-12-13 12:32:22,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:32:22,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903781503] [2022-12-13 12:32:22,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:32:22,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:32:22,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:32:22,358 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-13 12:32:22,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:32:22,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903781503] [2022-12-13 12:32:22,359 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903781503] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:32:22,359 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:32:22,359 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 12:32:22,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81832346] [2022-12-13 12:32:22,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:32:22,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:32:22,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:32:22,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:32:22,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:32:22,376 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 269 out of 653 [2022-12-13 12:32:22,377 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 57 transitions, 162 flow. Second operand has 3 states, 3 states have (on average 271.6666666666667) internal successors, (815), 3 states have internal predecessors, (815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:32:22,377 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:32:22,377 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 269 of 653 [2022-12-13 12:32:22,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:32:34,481 INFO L130 PetriNetUnfolder]: 118825/156123 cut-off events. [2022-12-13 12:32:34,481 INFO L131 PetriNetUnfolder]: For 25335/25335 co-relation queries the response was YES. [2022-12-13 12:32:35,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 376626 conditions, 156123 events. 118825/156123 cut-off events. For 25335/25335 co-relation queries the response was YES. Maximal size of possible extension queue 5538. Compared 1019352 event pairs, 74305 based on Foata normal form. 0/116350 useless extension candidates. Maximal degree in co-relation 300637. Up to 111268 conditions per place. [2022-12-13 12:32:35,733 INFO L137 encePairwiseOnDemand]: 649/653 looper letters, 64 selfloop transitions, 2 changer transitions 0/85 dead transitions. [2022-12-13 12:32:35,733 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 85 transitions, 376 flow [2022-12-13 12:32:35,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:32:35,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:32:35,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 871 transitions. [2022-12-13 12:32:35,736 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4446145992853497 [2022-12-13 12:32:35,736 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 871 transitions. [2022-12-13 12:32:35,736 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 871 transitions. [2022-12-13 12:32:35,736 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:32:35,737 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 871 transitions. [2022-12-13 12:32:35,737 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 290.3333333333333) internal successors, (871), 3 states have internal predecessors, (871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:32:35,739 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 653.0) internal successors, (2612), 4 states have internal predecessors, (2612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:32:35,739 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 653.0) internal successors, (2612), 4 states have internal predecessors, (2612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:32:35,739 INFO L175 Difference]: Start difference. First operand has 71 places, 57 transitions, 162 flow. Second operand 3 states and 871 transitions. [2022-12-13 12:32:35,739 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 85 transitions, 376 flow [2022-12-13 12:32:35,869 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 85 transitions, 375 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 12:32:35,870 INFO L231 Difference]: Finished difference. Result has 73 places, 58 transitions, 175 flow [2022-12-13 12:32:35,870 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=653, PETRI_DIFFERENCE_MINUEND_FLOW=161, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=175, PETRI_PLACES=73, PETRI_TRANSITIONS=58} [2022-12-13 12:32:35,870 INFO L288 CegarLoopForPetriNet]: 72 programPoint places, 1 predicate places. [2022-12-13 12:32:35,870 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 58 transitions, 175 flow [2022-12-13 12:32:35,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 271.6666666666667) internal successors, (815), 3 states have internal predecessors, (815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:32:35,871 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:32:35,871 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:32:35,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2022-12-13 12:32:35,871 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-12-13 12:32:35,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:32:35,871 INFO L85 PathProgramCache]: Analyzing trace with hash 1044734743, now seen corresponding path program 1 times [2022-12-13 12:32:35,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:32:35,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756722400] [2022-12-13 12:32:35,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:32:35,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:32:35,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:32:35,898 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-13 12:32:35,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:32:35,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756722400] [2022-12-13 12:32:35,898 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756722400] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:32:35,898 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:32:35,898 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 12:32:35,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161985685] [2022-12-13 12:32:35,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:32:35,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:32:35,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:32:35,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:32:35,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:32:35,905 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 271 out of 653 [2022-12-13 12:32:35,905 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 58 transitions, 175 flow. Second operand has 3 states, 3 states have (on average 273.6666666666667) internal successors, (821), 3 states have internal predecessors, (821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:32:35,905 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:32:35,905 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 271 of 653 [2022-12-13 12:32:35,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:32:45,341 INFO L130 PetriNetUnfolder]: 93265/120303 cut-off events. [2022-12-13 12:32:45,341 INFO L131 PetriNetUnfolder]: For 27465/27465 co-relation queries the response was YES. [2022-12-13 12:32:45,775 INFO L83 FinitePrefix]: Finished finitePrefix Result has 309811 conditions, 120303 events. 93265/120303 cut-off events. For 27465/27465 co-relation queries the response was YES. Maximal size of possible extension queue 4188. Compared 738062 event pairs, 12601 based on Foata normal form. 5760/98902 useless extension candidates. Maximal degree in co-relation 247837. Up to 96840 conditions per place. [2022-12-13 12:32:46,330 INFO L137 encePairwiseOnDemand]: 651/653 looper letters, 63 selfloop transitions, 1 changer transitions 0/83 dead transitions. [2022-12-13 12:32:46,330 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 83 transitions, 379 flow [2022-12-13 12:32:46,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:32:46,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:32:46,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 873 transitions. [2022-12-13 12:32:46,332 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.445635528330781 [2022-12-13 12:32:46,332 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 873 transitions. [2022-12-13 12:32:46,332 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 873 transitions. [2022-12-13 12:32:46,332 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:32:46,332 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 873 transitions. [2022-12-13 12:32:46,333 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 291.0) internal successors, (873), 3 states have internal predecessors, (873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:32:46,334 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 653.0) internal successors, (2612), 4 states have internal predecessors, (2612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:32:46,334 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 653.0) internal successors, (2612), 4 states have internal predecessors, (2612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:32:46,334 INFO L175 Difference]: Start difference. First operand has 73 places, 58 transitions, 175 flow. Second operand 3 states and 873 transitions. [2022-12-13 12:32:46,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 83 transitions, 379 flow [2022-12-13 12:32:46,600 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 83 transitions, 375 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-12-13 12:32:46,600 INFO L231 Difference]: Finished difference. Result has 73 places, 57 transitions, 171 flow [2022-12-13 12:32:46,601 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=653, PETRI_DIFFERENCE_MINUEND_FLOW=169, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=171, PETRI_PLACES=73, PETRI_TRANSITIONS=57} [2022-12-13 12:32:46,601 INFO L288 CegarLoopForPetriNet]: 72 programPoint places, 1 predicate places. [2022-12-13 12:32:46,601 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 57 transitions, 171 flow [2022-12-13 12:32:46,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 273.6666666666667) internal successors, (821), 3 states have internal predecessors, (821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:32:46,601 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:32:46,601 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:32:46,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2022-12-13 12:32:46,601 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-12-13 12:32:46,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:32:46,601 INFO L85 PathProgramCache]: Analyzing trace with hash -1972950145, now seen corresponding path program 1 times [2022-12-13 12:32:46,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:32:46,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52148399] [2022-12-13 12:32:46,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:32:46,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:32:46,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:32:46,624 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-13 12:32:46,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:32:46,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52148399] [2022-12-13 12:32:46,625 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52148399] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:32:46,625 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:32:46,625 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 12:32:46,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75171070] [2022-12-13 12:32:46,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:32:46,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:32:46,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:32:46,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:32:46,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:32:46,635 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 271 out of 653 [2022-12-13 12:32:46,636 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 57 transitions, 171 flow. Second operand has 3 states, 3 states have (on average 274.0) internal successors, (822), 3 states have internal predecessors, (822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:32:46,636 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:32:46,636 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 271 of 653 [2022-12-13 12:32:46,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:32:54,897 INFO L130 PetriNetUnfolder]: 81205/106803 cut-off events. [2022-12-13 12:32:54,897 INFO L131 PetriNetUnfolder]: For 23565/23565 co-relation queries the response was YES. [2022-12-13 12:32:55,276 INFO L83 FinitePrefix]: Finished finitePrefix Result has 266863 conditions, 106803 events. 81205/106803 cut-off events. For 23565/23565 co-relation queries the response was YES. Maximal size of possible extension queue 3686. Compared 682748 event pairs, 9001 based on Foata normal form. 0/84418 useless extension candidates. Maximal degree in co-relation 213487. Up to 81180 conditions per place. [2022-12-13 12:32:55,651 INFO L137 encePairwiseOnDemand]: 651/653 looper letters, 62 selfloop transitions, 1 changer transitions 0/82 dead transitions. [2022-12-13 12:32:55,652 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 82 transitions, 371 flow [2022-12-13 12:32:55,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:32:55,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:32:55,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 872 transitions. [2022-12-13 12:32:55,654 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4451250638080653 [2022-12-13 12:32:55,654 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 872 transitions. [2022-12-13 12:32:55,654 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 872 transitions. [2022-12-13 12:32:55,654 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:32:55,654 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 872 transitions. [2022-12-13 12:32:55,655 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 290.6666666666667) internal successors, (872), 3 states have internal predecessors, (872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:32:55,656 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 653.0) internal successors, (2612), 4 states have internal predecessors, (2612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:32:55,656 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 653.0) internal successors, (2612), 4 states have internal predecessors, (2612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:32:55,656 INFO L175 Difference]: Start difference. First operand has 73 places, 57 transitions, 171 flow. Second operand 3 states and 872 transitions. [2022-12-13 12:32:55,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 82 transitions, 371 flow [2022-12-13 12:32:55,881 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 82 transitions, 370 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 12:32:55,882 INFO L231 Difference]: Finished difference. Result has 73 places, 56 transitions, 168 flow [2022-12-13 12:32:55,882 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=653, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=168, PETRI_PLACES=73, PETRI_TRANSITIONS=56} [2022-12-13 12:32:55,882 INFO L288 CegarLoopForPetriNet]: 72 programPoint places, 1 predicate places. [2022-12-13 12:32:55,882 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 56 transitions, 168 flow [2022-12-13 12:32:55,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 274.0) internal successors, (822), 3 states have internal predecessors, (822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:32:55,882 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:32:55,882 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:32:55,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2022-12-13 12:32:55,883 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-12-13 12:32:55,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:32:55,883 INFO L85 PathProgramCache]: Analyzing trace with hash -2041908599, now seen corresponding path program 1 times [2022-12-13 12:32:55,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:32:55,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509948917] [2022-12-13 12:32:55,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:32:55,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:32:55,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:32:55,910 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-12-13 12:32:55,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:32:55,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509948917] [2022-12-13 12:32:55,911 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509948917] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:32:55,911 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:32:55,911 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 12:32:55,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705372068] [2022-12-13 12:32:55,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:32:55,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:32:55,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:32:55,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:32:55,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:32:55,919 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 271 out of 653 [2022-12-13 12:32:55,919 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 56 transitions, 168 flow. Second operand has 3 states, 3 states have (on average 274.0) internal successors, (822), 3 states have internal predecessors, (822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:32:55,919 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:32:55,919 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 271 of 653 [2022-12-13 12:32:55,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:33:04,223 INFO L130 PetriNetUnfolder]: 80485/106443 cut-off events. [2022-12-13 12:33:04,223 INFO L131 PetriNetUnfolder]: For 26145/26145 co-relation queries the response was YES. [2022-12-13 12:33:04,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 270103 conditions, 106443 events. 80485/106443 cut-off events. For 26145/26145 co-relation queries the response was YES. Maximal size of possible extension queue 3590. Compared 672155 event pairs, 14173 based on Foata normal form. 0/84448 useless extension candidates. Maximal degree in co-relation 216187. Up to 73440 conditions per place. [2022-12-13 12:33:05,021 INFO L137 encePairwiseOnDemand]: 651/653 looper letters, 60 selfloop transitions, 1 changer transitions 0/79 dead transitions. [2022-12-13 12:33:05,022 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 79 transitions, 367 flow [2022-12-13 12:33:05,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:33:05,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:33:05,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 869 transitions. [2022-12-13 12:33:05,024 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4435936702399183 [2022-12-13 12:33:05,024 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 869 transitions. [2022-12-13 12:33:05,024 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 869 transitions. [2022-12-13 12:33:05,024 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:33:05,024 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 869 transitions. [2022-12-13 12:33:05,025 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 289.6666666666667) internal successors, (869), 3 states have internal predecessors, (869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:33:05,027 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 653.0) internal successors, (2612), 4 states have internal predecessors, (2612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:33:05,027 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 653.0) internal successors, (2612), 4 states have internal predecessors, (2612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:33:05,027 INFO L175 Difference]: Start difference. First operand has 73 places, 56 transitions, 168 flow. Second operand 3 states and 869 transitions. [2022-12-13 12:33:05,027 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 79 transitions, 367 flow [2022-12-13 12:33:05,255 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 79 transitions, 365 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 12:33:05,255 INFO L231 Difference]: Finished difference. Result has 73 places, 55 transitions, 167 flow [2022-12-13 12:33:05,256 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=653, PETRI_DIFFERENCE_MINUEND_FLOW=165, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=167, PETRI_PLACES=73, PETRI_TRANSITIONS=55} [2022-12-13 12:33:05,256 INFO L288 CegarLoopForPetriNet]: 72 programPoint places, 1 predicate places. [2022-12-13 12:33:05,256 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 55 transitions, 167 flow [2022-12-13 12:33:05,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 274.0) internal successors, (822), 3 states have internal predecessors, (822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:33:05,256 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:33:05,256 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:33:05,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2022-12-13 12:33:05,256 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-12-13 12:33:05,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:33:05,256 INFO L85 PathProgramCache]: Analyzing trace with hash -2041908493, now seen corresponding path program 1 times [2022-12-13 12:33:05,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:33:05,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798788652] [2022-12-13 12:33:05,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:33:05,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:33:05,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:05,288 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-12-13 12:33:05,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:33:05,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798788652] [2022-12-13 12:33:05,288 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798788652] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:33:05,288 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:33:05,288 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 12:33:05,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167564761] [2022-12-13 12:33:05,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:33:05,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:33:05,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:33:05,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:33:05,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:33:05,297 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 271 out of 653 [2022-12-13 12:33:05,298 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 55 transitions, 167 flow. Second operand has 3 states, 3 states have (on average 274.0) internal successors, (822), 3 states have internal predecessors, (822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:33:05,298 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:33:05,298 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 271 of 653 [2022-12-13 12:33:05,298 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:33:12,947 INFO L130 PetriNetUnfolder]: 70765/94563 cut-off events. [2022-12-13 12:33:12,947 INFO L131 PetriNetUnfolder]: For 19635/19635 co-relation queries the response was YES. [2022-12-13 12:33:13,279 INFO L83 FinitePrefix]: Finished finitePrefix Result has 240727 conditions, 94563 events. 70765/94563 cut-off events. For 19635/19635 co-relation queries the response was YES. Maximal size of possible extension queue 3141. Compared 601217 event pairs, 14173 based on Foata normal form. 0/76240 useless extension candidates. Maximal degree in co-relation 192787. Up to 61560 conditions per place. [2022-12-13 12:33:13,612 INFO L137 encePairwiseOnDemand]: 651/653 looper letters, 59 selfloop transitions, 1 changer transitions 0/78 dead transitions. [2022-12-13 12:33:13,613 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 78 transitions, 363 flow [2022-12-13 12:33:13,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:33:13,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:33:13,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 868 transitions. [2022-12-13 12:33:13,615 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44308320571720267 [2022-12-13 12:33:13,615 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 868 transitions. [2022-12-13 12:33:13,615 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 868 transitions. [2022-12-13 12:33:13,615 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:33:13,615 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 868 transitions. [2022-12-13 12:33:13,616 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 289.3333333333333) internal successors, (868), 3 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:33:13,617 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 653.0) internal successors, (2612), 4 states have internal predecessors, (2612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:33:13,617 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 653.0) internal successors, (2612), 4 states have internal predecessors, (2612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:33:13,617 INFO L175 Difference]: Start difference. First operand has 73 places, 55 transitions, 167 flow. Second operand 3 states and 868 transitions. [2022-12-13 12:33:13,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 78 transitions, 363 flow [2022-12-13 12:33:14,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 78 transitions, 362 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 12:33:14,184 INFO L231 Difference]: Finished difference. Result has 73 places, 54 transitions, 166 flow [2022-12-13 12:33:14,184 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=653, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=166, PETRI_PLACES=73, PETRI_TRANSITIONS=54} [2022-12-13 12:33:14,184 INFO L288 CegarLoopForPetriNet]: 72 programPoint places, 1 predicate places. [2022-12-13 12:33:14,184 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 54 transitions, 166 flow [2022-12-13 12:33:14,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 274.0) internal successors, (822), 3 states have internal predecessors, (822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:33:14,184 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:33:14,184 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:33:14,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2022-12-13 12:33:14,184 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-12-13 12:33:14,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:33:14,185 INFO L85 PathProgramCache]: Analyzing trace with hash -2041908228, now seen corresponding path program 1 times [2022-12-13 12:33:14,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:33:14,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679866159] [2022-12-13 12:33:14,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:33:14,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:33:14,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:14,225 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-12-13 12:33:14,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:33:14,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679866159] [2022-12-13 12:33:14,225 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679866159] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:33:14,225 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:33:14,225 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 12:33:14,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268998809] [2022-12-13 12:33:14,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:33:14,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:33:14,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:33:14,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:33:14,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:33:14,233 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 271 out of 653 [2022-12-13 12:33:14,234 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 54 transitions, 166 flow. Second operand has 3 states, 3 states have (on average 274.0) internal successors, (822), 3 states have internal predecessors, (822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:33:14,234 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:33:14,234 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 271 of 653 [2022-12-13 12:33:14,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:33:20,834 INFO L130 PetriNetUnfolder]: 61045/82683 cut-off events. [2022-12-13 12:33:20,834 INFO L131 PetriNetUnfolder]: For 17475/17475 co-relation queries the response was YES. [2022-12-13 12:33:21,144 INFO L83 FinitePrefix]: Finished finitePrefix Result has 211351 conditions, 82683 events. 61045/82683 cut-off events. For 17475/17475 co-relation queries the response was YES. Maximal size of possible extension queue 2692. Compared 530983 event pairs, 14173 based on Foata normal form. 0/68032 useless extension candidates. Maximal degree in co-relation 169387. Up to 49680 conditions per place. [2022-12-13 12:33:21,425 INFO L137 encePairwiseOnDemand]: 651/653 looper letters, 58 selfloop transitions, 1 changer transitions 0/77 dead transitions. [2022-12-13 12:33:21,425 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 77 transitions, 360 flow [2022-12-13 12:33:21,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:33:21,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:33:21,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 867 transitions. [2022-12-13 12:33:21,427 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.442572741194487 [2022-12-13 12:33:21,427 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 867 transitions. [2022-12-13 12:33:21,427 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 867 transitions. [2022-12-13 12:33:21,427 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:33:21,427 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 867 transitions. [2022-12-13 12:33:21,428 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 289.0) internal successors, (867), 3 states have internal predecessors, (867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:33:21,429 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 653.0) internal successors, (2612), 4 states have internal predecessors, (2612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:33:21,429 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 653.0) internal successors, (2612), 4 states have internal predecessors, (2612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:33:21,430 INFO L175 Difference]: Start difference. First operand has 73 places, 54 transitions, 166 flow. Second operand 3 states and 867 transitions. [2022-12-13 12:33:21,430 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 77 transitions, 360 flow [2022-12-13 12:33:21,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 77 transitions, 359 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 12:33:21,937 INFO L231 Difference]: Finished difference. Result has 73 places, 53 transitions, 165 flow [2022-12-13 12:33:21,937 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=653, PETRI_DIFFERENCE_MINUEND_FLOW=163, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=165, PETRI_PLACES=73, PETRI_TRANSITIONS=53} [2022-12-13 12:33:21,937 INFO L288 CegarLoopForPetriNet]: 72 programPoint places, 1 predicate places. [2022-12-13 12:33:21,937 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 53 transitions, 165 flow [2022-12-13 12:33:21,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 274.0) internal successors, (822), 3 states have internal predecessors, (822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:33:21,937 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:33:21,937 INFO L209 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:33:21,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2022-12-13 12:33:21,937 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-12-13 12:33:21,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:33:21,938 INFO L85 PathProgramCache]: Analyzing trace with hash 506203321, now seen corresponding path program 1 times [2022-12-13 12:33:21,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:33:21,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279179267] [2022-12-13 12:33:21,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:33:21,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:33:21,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 12:33:21,945 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 12:33:21,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 12:33:21,951 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 12:33:21,951 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 12:33:21,951 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (24 of 25 remaining) [2022-12-13 12:33:21,951 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 25 remaining) [2022-12-13 12:33:21,951 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 25 remaining) [2022-12-13 12:33:21,951 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 25 remaining) [2022-12-13 12:33:21,951 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 25 remaining) [2022-12-13 12:33:21,952 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 25 remaining) [2022-12-13 12:33:21,952 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 25 remaining) [2022-12-13 12:33:21,952 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 25 remaining) [2022-12-13 12:33:21,952 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 25 remaining) [2022-12-13 12:33:21,952 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 25 remaining) [2022-12-13 12:33:21,952 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 25 remaining) [2022-12-13 12:33:21,952 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 25 remaining) [2022-12-13 12:33:21,952 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 25 remaining) [2022-12-13 12:33:21,952 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 25 remaining) [2022-12-13 12:33:21,952 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 25 remaining) [2022-12-13 12:33:21,952 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 25 remaining) [2022-12-13 12:33:21,952 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 25 remaining) [2022-12-13 12:33:21,952 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 25 remaining) [2022-12-13 12:33:21,952 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 25 remaining) [2022-12-13 12:33:21,952 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 25 remaining) [2022-12-13 12:33:21,952 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 25 remaining) [2022-12-13 12:33:21,952 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 25 remaining) [2022-12-13 12:33:21,953 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 25 remaining) [2022-12-13 12:33:21,953 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 25 remaining) [2022-12-13 12:33:21,953 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 25 remaining) [2022-12-13 12:33:21,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2022-12-13 12:33:21,953 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:33:21,953 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-13 12:33:21,953 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2022-12-13 12:33:21,976 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-13 12:33:21,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 337 places, 367 transitions, 794 flow [2022-12-13 12:33:22,034 INFO L130 PetriNetUnfolder]: 49/443 cut-off events. [2022-12-13 12:33:22,034 INFO L131 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2022-12-13 12:33:22,038 INFO L83 FinitePrefix]: Finished finitePrefix Result has 483 conditions, 443 events. 49/443 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1579 event pairs, 0 based on Foata normal form. 0/363 useless extension candidates. Maximal degree in co-relation 394. Up to 14 conditions per place. [2022-12-13 12:33:22,038 INFO L82 GeneralOperation]: Start removeDead. Operand has 337 places, 367 transitions, 794 flow [2022-12-13 12:33:22,041 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 337 places, 367 transitions, 794 flow [2022-12-13 12:33:22,041 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 12:33:22,041 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 337 places, 367 transitions, 794 flow [2022-12-13 12:33:22,041 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 337 places, 367 transitions, 794 flow [2022-12-13 12:33:22,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 337 places, 367 transitions, 794 flow [2022-12-13 12:33:22,095 INFO L130 PetriNetUnfolder]: 49/443 cut-off events. [2022-12-13 12:33:22,095 INFO L131 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2022-12-13 12:33:22,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 483 conditions, 443 events. 49/443 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1579 event pairs, 0 based on Foata normal form. 0/363 useless extension candidates. Maximal degree in co-relation 394. Up to 14 conditions per place. [2022-12-13 12:33:22,116 INFO L119 LiptonReduction]: Number of co-enabled transitions 98172 [2022-12-13 12:33:27,516 INFO L134 LiptonReduction]: Checked pairs total: 141962 [2022-12-13 12:33:27,516 INFO L136 LiptonReduction]: Total number of compositions: 412 [2022-12-13 12:33:27,517 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 12:33:27,518 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;@67bc0eb5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 12:33:27,518 INFO L358 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2022-12-13 12:33:27,519 INFO L130 PetriNetUnfolder]: 1/8 cut-off events. [2022-12-13 12:33:27,519 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 12:33:27,519 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:33:27,519 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 12:33:27,520 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2022-12-13 12:33:27,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:33:27,520 INFO L85 PathProgramCache]: Analyzing trace with hash -1006884531, now seen corresponding path program 1 times [2022-12-13 12:33:27,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:33:27,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684246370] [2022-12-13 12:33:27,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:33:27,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:33:27,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:27,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:33:27,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:33:27,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684246370] [2022-12-13 12:33:27,539 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684246370] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:33:27,539 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:33:27,539 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 12:33:27,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110292240] [2022-12-13 12:33:27,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:33:27,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:33:27,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:33:27,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:33:27,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:33:27,548 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 319 out of 779 [2022-12-13 12:33:27,549 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 90 transitions, 240 flow. Second operand has 3 states, 3 states have (on average 320.6666666666667) internal successors, (962), 3 states have internal predecessors, (962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:33:27,549 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:33:27,549 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 319 of 779 [2022-12-13 12:33:27,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:35:51,307 INFO L130 PetriNetUnfolder]: 1528504/1904318 cut-off events. [2022-12-13 12:35:51,307 INFO L131 PetriNetUnfolder]: For 421574/421574 co-relation queries the response was YES. [2022-12-13 12:35:56,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3808863 conditions, 1904318 events. 1528504/1904318 cut-off events. For 421574/421574 co-relation queries the response was YES. Maximal size of possible extension queue 62773. Compared 13824329 event pairs, 145662 based on Foata normal form. 0/1170413 useless extension candidates. Maximal degree in co-relation 483869. Up to 1546242 conditions per place. [2022-12-13 12:36:06,177 INFO L137 encePairwiseOnDemand]: 764/779 looper letters, 90 selfloop transitions, 1 changer transitions 0/117 dead transitions. [2022-12-13 12:36:06,177 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 117 transitions, 521 flow [2022-12-13 12:36:06,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:36:06,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:36:06,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1073 transitions. [2022-12-13 12:36:06,179 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4591356439880188 [2022-12-13 12:36:06,179 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1073 transitions. [2022-12-13 12:36:06,179 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1073 transitions. [2022-12-13 12:36:06,179 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:36:06,179 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1073 transitions. [2022-12-13 12:36:06,180 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 357.6666666666667) internal successors, (1073), 3 states have internal predecessors, (1073), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:36:06,182 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 779.0) internal successors, (3116), 4 states have internal predecessors, (3116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:36:06,182 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 779.0) internal successors, (3116), 4 states have internal predecessors, (3116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:36:06,182 INFO L175 Difference]: Start difference. First operand has 85 places, 90 transitions, 240 flow. Second operand 3 states and 1073 transitions. [2022-12-13 12:36:06,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 117 transitions, 521 flow [2022-12-13 12:36:06,650 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 117 transitions, 471 flow, removed 25 selfloop flow, removed 0 redundant places. [2022-12-13 12:36:06,651 INFO L231 Difference]: Finished difference. Result has 79 places, 76 transitions, 184 flow [2022-12-13 12:36:06,651 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=779, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=184, PETRI_PLACES=79, PETRI_TRANSITIONS=76} [2022-12-13 12:36:06,651 INFO L288 CegarLoopForPetriNet]: 85 programPoint places, -6 predicate places. [2022-12-13 12:36:06,651 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 76 transitions, 184 flow [2022-12-13 12:36:06,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 320.6666666666667) internal successors, (962), 3 states have internal predecessors, (962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:36:06,652 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:36:06,652 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 12:36:06,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2022-12-13 12:36:06,652 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2022-12-13 12:36:06,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:36:06,652 INFO L85 PathProgramCache]: Analyzing trace with hash -1006884170, now seen corresponding path program 1 times [2022-12-13 12:36:06,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:36:06,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852924107] [2022-12-13 12:36:06,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:36:06,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:36:06,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:36:06,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:36:06,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:36:06,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852924107] [2022-12-13 12:36:06,673 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852924107] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:36:06,673 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:36:06,673 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 12:36:06,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967932027] [2022-12-13 12:36:06,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:36:06,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:36:06,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:36:06,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:36:06,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:36:06,681 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 319 out of 779 [2022-12-13 12:36:06,682 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 76 transitions, 184 flow. Second operand has 3 states, 3 states have (on average 320.6666666666667) internal successors, (962), 3 states have internal predecessors, (962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:36:06,682 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:36:06,682 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 319 of 779 [2022-12-13 12:36:06,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand