./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/06-symbeq_02-funloop_norace.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_253f124d-31db-41e8-8575-2eb5dad3f4f6/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_253f124d-31db-41e8-8575-2eb5dad3f4f6/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_253f124d-31db-41e8-8575-2eb5dad3f4f6/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_253f124d-31db-41e8-8575-2eb5dad3f4f6/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/06-symbeq_02-funloop_norace.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_253f124d-31db-41e8-8575-2eb5dad3f4f6/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_253f124d-31db-41e8-8575-2eb5dad3f4f6/bin/uautomizer-tPACEb0tL8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ebedbc62bd44b0c214a81c07c6f99e850a5d96675b77716f8547d1b39e8b2cf8 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 11:54:45,326 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 11:54:45,328 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 11:54:45,367 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 11:54:45,367 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 11:54:45,369 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 11:54:45,371 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 11:54:45,373 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 11:54:45,375 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 11:54:45,376 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 11:54:45,378 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 11:54:45,379 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 11:54:45,380 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 11:54:45,381 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 11:54:45,383 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 11:54:45,385 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 11:54:45,386 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 11:54:45,387 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 11:54:45,389 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 11:54:45,392 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 11:54:45,394 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 11:54:45,403 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 11:54:45,405 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 11:54:45,406 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 11:54:45,411 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 11:54:45,411 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 11:54:45,412 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 11:54:45,413 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 11:54:45,413 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 11:54:45,414 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 11:54:45,415 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 11:54:45,416 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 11:54:45,417 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 11:54:45,418 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 11:54:45,429 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 11:54:45,429 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 11:54:45,430 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 11:54:45,431 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 11:54:45,431 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 11:54:45,432 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 11:54:45,433 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 11:54:45,434 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_253f124d-31db-41e8-8575-2eb5dad3f4f6/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-16 11:54:45,485 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 11:54:45,485 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 11:54:45,486 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 11:54:45,486 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 11:54:45,488 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 11:54:45,488 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 11:54:45,489 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 11:54:45,490 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 11:54:45,490 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 11:54:45,490 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 11:54:45,491 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 11:54:45,492 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 11:54:45,492 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 11:54:45,492 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 11:54:45,492 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 11:54:45,493 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 11:54:45,493 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 11:54:45,493 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 11:54:45,493 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-16 11:54:45,494 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 11:54:45,494 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 11:54:45,494 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 11:54:45,494 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 11:54:45,495 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 11:54:45,495 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 11:54:45,495 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 11:54:45,497 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:54:45,498 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 11:54:45,498 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 11:54:45,498 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 11:54:45,499 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 11:54:45,499 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 11:54:45,499 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 11:54:45,499 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 11:54:45,500 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 11:54:45,500 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_253f124d-31db-41e8-8575-2eb5dad3f4f6/bin/uautomizer-tPACEb0tL8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_253f124d-31db-41e8-8575-2eb5dad3f4f6/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ebedbc62bd44b0c214a81c07c6f99e850a5d96675b77716f8547d1b39e8b2cf8 [2022-11-16 11:54:45,919 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 11:54:45,951 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 11:54:45,954 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 11:54:45,955 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 11:54:45,956 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 11:54:45,958 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_253f124d-31db-41e8-8575-2eb5dad3f4f6/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/goblint-regression/06-symbeq_02-funloop_norace.i [2022-11-16 11:54:46,034 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_253f124d-31db-41e8-8575-2eb5dad3f4f6/bin/uautomizer-tPACEb0tL8/data/5d4544213/09980a44f1bd4ffaa62113005a0f82d6/FLAG2e258e016 [2022-11-16 11:54:46,762 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 11:54:46,762 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_253f124d-31db-41e8-8575-2eb5dad3f4f6/sv-benchmarks/c/goblint-regression/06-symbeq_02-funloop_norace.i [2022-11-16 11:54:46,778 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_253f124d-31db-41e8-8575-2eb5dad3f4f6/bin/uautomizer-tPACEb0tL8/data/5d4544213/09980a44f1bd4ffaa62113005a0f82d6/FLAG2e258e016 [2022-11-16 11:54:46,984 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_253f124d-31db-41e8-8575-2eb5dad3f4f6/bin/uautomizer-tPACEb0tL8/data/5d4544213/09980a44f1bd4ffaa62113005a0f82d6 [2022-11-16 11:54:46,988 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 11:54:46,989 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 11:54:46,992 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 11:54:46,992 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 11:54:46,996 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 11:54:46,997 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:54:46" (1/1) ... [2022-11-16 11:54:46,999 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a2e27ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:54:46, skipping insertion in model container [2022-11-16 11:54:47,000 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:54:46" (1/1) ... [2022-11-16 11:54:47,009 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 11:54:47,076 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:54:47,787 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:54:47,820 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 11:54:47,864 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:54:47,923 INFO L208 MainTranslator]: Completed translation [2022-11-16 11:54:47,924 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:54:47 WrapperNode [2022-11-16 11:54:47,924 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 11:54:47,926 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 11:54:47,926 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 11:54:47,926 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 11:54:47,937 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:54:47" (1/1) ... [2022-11-16 11:54:47,964 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:54:47" (1/1) ... [2022-11-16 11:54:47,997 INFO L138 Inliner]: procedures = 262, calls = 13, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 81 [2022-11-16 11:54:47,997 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 11:54:47,998 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 11:54:47,998 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 11:54:47,999 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 11:54:48,010 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:54:47" (1/1) ... [2022-11-16 11:54:48,010 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:54:47" (1/1) ... [2022-11-16 11:54:48,014 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:54:47" (1/1) ... [2022-11-16 11:54:48,015 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:54:47" (1/1) ... [2022-11-16 11:54:48,023 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:54:47" (1/1) ... [2022-11-16 11:54:48,030 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:54:47" (1/1) ... [2022-11-16 11:54:48,048 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:54:47" (1/1) ... [2022-11-16 11:54:48,049 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:54:47" (1/1) ... [2022-11-16 11:54:48,052 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 11:54:48,053 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 11:54:48,054 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 11:54:48,054 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 11:54:48,055 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:54:47" (1/1) ... [2022-11-16 11:54:48,063 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:54:48,091 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_253f124d-31db-41e8-8575-2eb5dad3f4f6/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:54:48,107 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_253f124d-31db-41e8-8575-2eb5dad3f4f6/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 11:54:48,126 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_253f124d-31db-41e8-8575-2eb5dad3f4f6/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 11:54:48,157 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 11:54:48,158 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 11:54:48,158 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 11:54:48,158 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 11:54:48,158 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-16 11:54:48,159 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 11:54:48,159 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-16 11:54:48,159 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-16 11:54:48,159 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 11:54:48,159 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 11:54:48,162 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-16 11:54:48,441 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 11:54:48,443 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 11:54:48,796 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 11:54:48,805 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 11:54:48,805 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-16 11:54:48,808 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:54:48 BoogieIcfgContainer [2022-11-16 11:54:48,808 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 11:54:48,811 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 11:54:48,811 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 11:54:48,815 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 11:54:48,816 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:54:46" (1/3) ... [2022-11-16 11:54:48,817 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56519c50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:54:48, skipping insertion in model container [2022-11-16 11:54:48,817 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:54:47" (2/3) ... [2022-11-16 11:54:48,817 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56519c50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:54:48, skipping insertion in model container [2022-11-16 11:54:48,817 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:54:48" (3/3) ... [2022-11-16 11:54:48,819 INFO L112 eAbstractionObserver]: Analyzing ICFG 06-symbeq_02-funloop_norace.i [2022-11-16 11:54:48,830 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 11:54:48,844 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 11:54:48,844 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2022-11-16 11:54:48,844 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 11:54:48,987 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-16 11:54:49,058 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 96 places, 98 transitions, 201 flow [2022-11-16 11:54:49,141 INFO L130 PetriNetUnfolder]: 6/97 cut-off events. [2022-11-16 11:54:49,141 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 11:54:49,149 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101 conditions, 97 events. 6/97 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 142 event pairs, 0 based on Foata normal form. 0/81 useless extension candidates. Maximal degree in co-relation 68. Up to 2 conditions per place. [2022-11-16 11:54:49,149 INFO L82 GeneralOperation]: Start removeDead. Operand has 96 places, 98 transitions, 201 flow [2022-11-16 11:54:49,163 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 95 places, 97 transitions, 197 flow [2022-11-16 11:54:49,178 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:54:49,187 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;@36e790e4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:54:49,187 INFO L358 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2022-11-16 11:54:49,195 INFO L130 PetriNetUnfolder]: 1/20 cut-off events. [2022-11-16 11:54:49,196 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 11:54:49,196 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:54:49,197 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:54:49,197 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2022-11-16 11:54:49,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:54:49,204 INFO L85 PathProgramCache]: Analyzing trace with hash -1598082456, now seen corresponding path program 1 times [2022-11-16 11:54:49,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:54:49,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638477586] [2022-11-16 11:54:49,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:54:49,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:54:49,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:54:49,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:54:49,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:54:49,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638477586] [2022-11-16 11:54:49,512 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638477586] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:54:49,513 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:54:49,513 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:54:49,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117648620] [2022-11-16 11:54:49,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:54:49,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:54:49,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:54:49,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:54:49,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:54:49,582 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 98 [2022-11-16 11:54:49,589 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 97 transitions, 197 flow. Second operand has 4 states, 4 states have (on average 83.5) internal successors, (334), 4 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:49,589 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:54:49,589 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 98 [2022-11-16 11:54:49,590 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:54:49,756 INFO L130 PetriNetUnfolder]: 3/101 cut-off events. [2022-11-16 11:54:49,757 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-16 11:54:49,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126 conditions, 101 events. 3/101 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 139 event pairs, 0 based on Foata normal form. 2/90 useless extension candidates. Maximal degree in co-relation 66. Up to 14 conditions per place. [2022-11-16 11:54:49,762 INFO L137 encePairwiseOnDemand]: 88/98 looper letters, 16 selfloop transitions, 4 changer transitions 0/101 dead transitions. [2022-11-16 11:54:49,762 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 101 transitions, 245 flow [2022-11-16 11:54:49,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:54:49,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:54:49,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 437 transitions. [2022-11-16 11:54:49,791 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8918367346938776 [2022-11-16 11:54:49,792 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 437 transitions. [2022-11-16 11:54:49,793 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 437 transitions. [2022-11-16 11:54:49,800 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:54:49,803 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 437 transitions. [2022-11-16 11:54:49,812 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 87.4) internal successors, (437), 5 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:49,823 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 98.0) internal successors, (588), 6 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:49,824 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 98.0) internal successors, (588), 6 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:49,826 INFO L175 Difference]: Start difference. First operand has 95 places, 97 transitions, 197 flow. Second operand 5 states and 437 transitions. [2022-11-16 11:54:49,828 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 101 transitions, 245 flow [2022-11-16 11:54:49,835 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 101 transitions, 244 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:54:49,841 INFO L231 Difference]: Finished difference. Result has 101 places, 97 transitions, 222 flow [2022-11-16 11:54:49,843 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=222, PETRI_PLACES=101, PETRI_TRANSITIONS=97} [2022-11-16 11:54:49,848 INFO L288 CegarLoopForPetriNet]: 95 programPoint places, 6 predicate places. [2022-11-16 11:54:49,848 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 97 transitions, 222 flow [2022-11-16 11:54:49,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 83.5) internal successors, (334), 4 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:49,849 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:54:49,849 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:54:49,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 11:54:49,851 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2022-11-16 11:54:49,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:54:49,853 INFO L85 PathProgramCache]: Analyzing trace with hash -532368849, now seen corresponding path program 1 times [2022-11-16 11:54:49,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:54:49,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456483485] [2022-11-16 11:54:49,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:54:49,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:54:49,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:54:49,999 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:54:49,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:54:49,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456483485] [2022-11-16 11:54:50,000 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456483485] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:54:50,000 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:54:50,000 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:54:50,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963018257] [2022-11-16 11:54:50,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:54:50,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:54:50,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:54:50,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:54:50,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:54:50,004 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 98 [2022-11-16 11:54:50,005 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 97 transitions, 222 flow. Second operand has 4 states, 4 states have (on average 85.25) internal successors, (341), 4 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:50,005 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:54:50,006 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 98 [2022-11-16 11:54:50,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:54:50,106 INFO L130 PetriNetUnfolder]: 3/100 cut-off events. [2022-11-16 11:54:50,107 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-16 11:54:50,108 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139 conditions, 100 events. 3/100 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 136 event pairs, 0 based on Foata normal form. 1/91 useless extension candidates. Maximal degree in co-relation 98. Up to 7 conditions per place. [2022-11-16 11:54:50,109 INFO L137 encePairwiseOnDemand]: 92/98 looper letters, 8 selfloop transitions, 8 changer transitions 0/97 dead transitions. [2022-11-16 11:54:50,109 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 97 transitions, 252 flow [2022-11-16 11:54:50,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:54:50,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:54:50,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 424 transitions. [2022-11-16 11:54:50,114 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8653061224489796 [2022-11-16 11:54:50,114 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 424 transitions. [2022-11-16 11:54:50,114 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 424 transitions. [2022-11-16 11:54:50,115 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:54:50,115 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 424 transitions. [2022-11-16 11:54:50,117 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 84.8) internal successors, (424), 5 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:50,119 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 98.0) internal successors, (588), 6 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:50,120 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 98.0) internal successors, (588), 6 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:50,120 INFO L175 Difference]: Start difference. First operand has 101 places, 97 transitions, 222 flow. Second operand 5 states and 424 transitions. [2022-11-16 11:54:50,120 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 97 transitions, 252 flow [2022-11-16 11:54:50,122 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 97 transitions, 250 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:54:50,126 INFO L231 Difference]: Finished difference. Result has 104 places, 97 transitions, 240 flow [2022-11-16 11:54:50,126 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=240, PETRI_PLACES=104, PETRI_TRANSITIONS=97} [2022-11-16 11:54:50,127 INFO L288 CegarLoopForPetriNet]: 95 programPoint places, 9 predicate places. [2022-11-16 11:54:50,127 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 97 transitions, 240 flow [2022-11-16 11:54:50,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 85.25) internal successors, (341), 4 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:50,128 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:54:50,129 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:54:50,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 11:54:50,130 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2022-11-16 11:54:50,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:54:50,130 INFO L85 PathProgramCache]: Analyzing trace with hash 676435062, now seen corresponding path program 1 times [2022-11-16 11:54:50,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:54:50,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896948841] [2022-11-16 11:54:50,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:54:50,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:54:50,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:54:50,342 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:54:50,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:54:50,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896948841] [2022-11-16 11:54:50,343 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896948841] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:54:50,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1718025194] [2022-11-16 11:54:50,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:54:50,344 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:54:50,344 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_253f124d-31db-41e8-8575-2eb5dad3f4f6/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:54:50,350 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_253f124d-31db-41e8-8575-2eb5dad3f4f6/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:54:50,362 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_253f124d-31db-41e8-8575-2eb5dad3f4f6/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 11:54:50,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:54:50,446 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 11:54:50,454 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:54:50,559 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:54:50,560 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:54:50,560 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1718025194] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:54:50,561 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:54:50,561 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-16 11:54:50,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250746165] [2022-11-16 11:54:50,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:54:50,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:54:50,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:54:50,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:54:50,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:54:50,571 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 98 [2022-11-16 11:54:50,573 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 97 transitions, 240 flow. Second operand has 6 states, 6 states have (on average 84.33333333333333) internal successors, (506), 6 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:50,573 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:54:50,573 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 98 [2022-11-16 11:54:50,573 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:54:50,726 INFO L130 PetriNetUnfolder]: 3/99 cut-off events. [2022-11-16 11:54:50,727 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2022-11-16 11:54:50,728 INFO L83 FinitePrefix]: Finished finitePrefix Result has 146 conditions, 99 events. 3/99 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 132 event pairs, 0 based on Foata normal form. 1/90 useless extension candidates. Maximal degree in co-relation 96. Up to 6 conditions per place. [2022-11-16 11:54:50,729 INFO L137 encePairwiseOnDemand]: 93/98 looper letters, 12 selfloop transitions, 6 changer transitions 0/99 dead transitions. [2022-11-16 11:54:50,729 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 99 transitions, 278 flow [2022-11-16 11:54:50,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 11:54:50,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 11:54:50,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 593 transitions. [2022-11-16 11:54:50,732 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8644314868804664 [2022-11-16 11:54:50,733 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 593 transitions. [2022-11-16 11:54:50,733 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 593 transitions. [2022-11-16 11:54:50,734 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:54:50,734 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 593 transitions. [2022-11-16 11:54:50,736 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 84.71428571428571) internal successors, (593), 7 states have internal predecessors, (593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:50,738 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 98.0) internal successors, (784), 8 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:50,739 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 98.0) internal successors, (784), 8 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:50,739 INFO L175 Difference]: Start difference. First operand has 104 places, 97 transitions, 240 flow. Second operand 7 states and 593 transitions. [2022-11-16 11:54:50,739 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 99 transitions, 278 flow [2022-11-16 11:54:50,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 99 transitions, 266 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 11:54:50,744 INFO L231 Difference]: Finished difference. Result has 106 places, 96 transitions, 236 flow [2022-11-16 11:54:50,744 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=224, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=236, PETRI_PLACES=106, PETRI_TRANSITIONS=96} [2022-11-16 11:54:50,745 INFO L288 CegarLoopForPetriNet]: 95 programPoint places, 11 predicate places. [2022-11-16 11:54:50,746 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 96 transitions, 236 flow [2022-11-16 11:54:50,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 84.33333333333333) internal successors, (506), 6 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:50,747 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:54:50,747 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:54:50,759 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_253f124d-31db-41e8-8575-2eb5dad3f4f6/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 11:54:50,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_253f124d-31db-41e8-8575-2eb5dad3f4f6/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:54:50,954 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2022-11-16 11:54:50,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:54:50,955 INFO L85 PathProgramCache]: Analyzing trace with hash -2098150413, now seen corresponding path program 1 times [2022-11-16 11:54:50,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:54:50,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147336689] [2022-11-16 11:54:50,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:54:50,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:54:50,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:54:51,166 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:54:51,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:54:51,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147336689] [2022-11-16 11:54:51,167 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147336689] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:54:51,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1066945459] [2022-11-16 11:54:51,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:54:51,168 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:54:51,169 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_253f124d-31db-41e8-8575-2eb5dad3f4f6/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:54:51,170 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_253f124d-31db-41e8-8575-2eb5dad3f4f6/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:54:51,202 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_253f124d-31db-41e8-8575-2eb5dad3f4f6/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 11:54:51,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:54:51,289 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 11:54:51,291 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:54:51,331 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:54:51,332 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:54:51,386 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:54:51,386 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1066945459] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:54:51,387 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:54:51,387 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-16 11:54:51,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906412330] [2022-11-16 11:54:51,388 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:54:51,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 11:54:51,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:54:51,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 11:54:51,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-16 11:54:51,393 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 98 [2022-11-16 11:54:51,395 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 96 transitions, 236 flow. Second operand has 10 states, 10 states have (on average 84.7) internal successors, (847), 10 states have internal predecessors, (847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:51,395 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:54:51,396 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 98 [2022-11-16 11:54:51,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:54:51,519 INFO L130 PetriNetUnfolder]: 3/107 cut-off events. [2022-11-16 11:54:51,520 INFO L131 PetriNetUnfolder]: For 17/17 co-relation queries the response was YES. [2022-11-16 11:54:51,521 INFO L83 FinitePrefix]: Finished finitePrefix Result has 171 conditions, 107 events. 3/107 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 121 event pairs, 0 based on Foata normal form. 2/99 useless extension candidates. Maximal degree in co-relation 86. Up to 7 conditions per place. [2022-11-16 11:54:51,522 INFO L137 encePairwiseOnDemand]: 92/98 looper letters, 17 selfloop transitions, 9 changer transitions 0/107 dead transitions. [2022-11-16 11:54:51,522 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 107 transitions, 326 flow [2022-11-16 11:54:51,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 11:54:51,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 11:54:51,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 766 transitions. [2022-11-16 11:54:51,526 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8684807256235828 [2022-11-16 11:54:51,526 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 766 transitions. [2022-11-16 11:54:51,527 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 766 transitions. [2022-11-16 11:54:51,527 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:54:51,528 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 766 transitions. [2022-11-16 11:54:51,530 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 85.11111111111111) internal successors, (766), 9 states have internal predecessors, (766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:51,533 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 98.0) internal successors, (980), 10 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:51,534 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 98.0) internal successors, (980), 10 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:51,534 INFO L175 Difference]: Start difference. First operand has 106 places, 96 transitions, 236 flow. Second operand 9 states and 766 transitions. [2022-11-16 11:54:51,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 107 transitions, 326 flow [2022-11-16 11:54:51,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 107 transitions, 313 flow, removed 2 selfloop flow, removed 5 redundant places. [2022-11-16 11:54:51,540 INFO L231 Difference]: Finished difference. Result has 113 places, 100 transitions, 283 flow [2022-11-16 11:54:51,541 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=225, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=283, PETRI_PLACES=113, PETRI_TRANSITIONS=100} [2022-11-16 11:54:51,544 INFO L288 CegarLoopForPetriNet]: 95 programPoint places, 18 predicate places. [2022-11-16 11:54:51,544 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 100 transitions, 283 flow [2022-11-16 11:54:51,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 84.7) internal successors, (847), 10 states have internal predecessors, (847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:51,545 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:54:51,546 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:54:51,554 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_253f124d-31db-41e8-8575-2eb5dad3f4f6/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 11:54:51,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_253f124d-31db-41e8-8575-2eb5dad3f4f6/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:54:51,752 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2022-11-16 11:54:51,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:54:51,753 INFO L85 PathProgramCache]: Analyzing trace with hash 234053075, now seen corresponding path program 2 times [2022-11-16 11:54:51,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:54:51,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743600910] [2022-11-16 11:54:51,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:54:51,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:54:51,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:54:52,068 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:54:52,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:54:52,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743600910] [2022-11-16 11:54:52,069 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743600910] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:54:52,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [308783829] [2022-11-16 11:54:52,070 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:54:52,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:54:52,071 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_253f124d-31db-41e8-8575-2eb5dad3f4f6/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:54:52,072 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_253f124d-31db-41e8-8575-2eb5dad3f4f6/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:54:52,078 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_253f124d-31db-41e8-8575-2eb5dad3f4f6/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 11:54:52,193 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-16 11:54:52,193 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:54:52,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-16 11:54:52,199 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:54:52,308 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2022-11-16 11:54:52,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:54:52,646 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2022-11-16 11:54:52,769 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2022-11-16 11:54:52,818 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-16 11:54:52,818 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:54:52,819 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [308783829] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:54:52,819 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:54:52,819 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [9] total 18 [2022-11-16 11:54:52,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837158988] [2022-11-16 11:54:52,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:54:52,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-16 11:54:52,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:54:52,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-16 11:54:52,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2022-11-16 11:54:52,823 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 98 [2022-11-16 11:54:52,825 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 100 transitions, 283 flow. Second operand has 11 states, 11 states have (on average 69.36363636363636) internal successors, (763), 11 states have internal predecessors, (763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:52,825 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:54:52,825 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 98 [2022-11-16 11:54:52,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:54:53,382 INFO L130 PetriNetUnfolder]: 170/685 cut-off events. [2022-11-16 11:54:53,382 INFO L131 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2022-11-16 11:54:53,386 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1071 conditions, 685 events. 170/685 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 4032 event pairs, 0 based on Foata normal form. 0/600 useless extension candidates. Maximal degree in co-relation 989. Up to 198 conditions per place. [2022-11-16 11:54:53,390 INFO L137 encePairwiseOnDemand]: 83/98 looper letters, 51 selfloop transitions, 27 changer transitions 0/151 dead transitions. [2022-11-16 11:54:53,391 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 151 transitions, 541 flow [2022-11-16 11:54:53,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-16 11:54:53,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-16 11:54:53,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 963 transitions. [2022-11-16 11:54:53,395 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7558869701726845 [2022-11-16 11:54:53,395 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 963 transitions. [2022-11-16 11:54:53,395 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 963 transitions. [2022-11-16 11:54:53,396 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:54:53,397 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 963 transitions. [2022-11-16 11:54:53,400 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 74.07692307692308) internal successors, (963), 13 states have internal predecessors, (963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:53,404 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 98.0) internal successors, (1372), 14 states have internal predecessors, (1372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:53,407 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 98.0) internal successors, (1372), 14 states have internal predecessors, (1372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:53,407 INFO L175 Difference]: Start difference. First operand has 113 places, 100 transitions, 283 flow. Second operand 13 states and 963 transitions. [2022-11-16 11:54:53,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 151 transitions, 541 flow [2022-11-16 11:54:53,414 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 151 transitions, 527 flow, removed 3 selfloop flow, removed 4 redundant places. [2022-11-16 11:54:53,418 INFO L231 Difference]: Finished difference. Result has 129 places, 127 transitions, 450 flow [2022-11-16 11:54:53,418 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=269, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=450, PETRI_PLACES=129, PETRI_TRANSITIONS=127} [2022-11-16 11:54:53,423 INFO L288 CegarLoopForPetriNet]: 95 programPoint places, 34 predicate places. [2022-11-16 11:54:53,423 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 127 transitions, 450 flow [2022-11-16 11:54:53,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 69.36363636363636) internal successors, (763), 11 states have internal predecessors, (763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:53,424 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:54:53,424 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:54:53,446 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_253f124d-31db-41e8-8575-2eb5dad3f4f6/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-16 11:54:53,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_253f124d-31db-41e8-8575-2eb5dad3f4f6/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:54:53,639 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2022-11-16 11:54:53,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:54:53,641 INFO L85 PathProgramCache]: Analyzing trace with hash 769616982, now seen corresponding path program 1 times [2022-11-16 11:54:53,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:54:53,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674558242] [2022-11-16 11:54:53,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:54:53,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:54:53,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:54:53,947 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:54:53,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:54:53,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674558242] [2022-11-16 11:54:53,948 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674558242] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:54:53,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1884562940] [2022-11-16 11:54:53,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:54:53,949 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:54:53,949 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_253f124d-31db-41e8-8575-2eb5dad3f4f6/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:54:53,951 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_253f124d-31db-41e8-8575-2eb5dad3f4f6/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:54:53,970 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_253f124d-31db-41e8-8575-2eb5dad3f4f6/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 11:54:54,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:54:54,072 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 11:54:54,079 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:54:54,170 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:54:54,172 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:54:54,330 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:54:54,330 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1884562940] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:54:54,330 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:54:54,331 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-11-16 11:54:54,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407855163] [2022-11-16 11:54:54,333 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:54:54,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-16 11:54:54,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:54:54,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-16 11:54:54,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2022-11-16 11:54:54,341 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 98 [2022-11-16 11:54:54,344 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 127 transitions, 450 flow. Second operand has 18 states, 18 states have (on average 85.05555555555556) internal successors, (1531), 18 states have internal predecessors, (1531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:54,344 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:54:54,344 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 98 [2022-11-16 11:54:54,345 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:54:54,770 INFO L130 PetriNetUnfolder]: 38/486 cut-off events. [2022-11-16 11:54:54,770 INFO L131 PetriNetUnfolder]: For 95/95 co-relation queries the response was YES. [2022-11-16 11:54:54,774 INFO L83 FinitePrefix]: Finished finitePrefix Result has 808 conditions, 486 events. 38/486 cut-off events. For 95/95 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 2390 event pairs, 3 based on Foata normal form. 4/427 useless extension candidates. Maximal degree in co-relation 696. Up to 33 conditions per place. [2022-11-16 11:54:54,777 INFO L137 encePairwiseOnDemand]: 92/98 looper letters, 33 selfloop transitions, 21 changer transitions 0/162 dead transitions. [2022-11-16 11:54:54,777 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 162 transitions, 720 flow [2022-11-16 11:54:54,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-16 11:54:54,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-16 11:54:54,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1780 transitions. [2022-11-16 11:54:54,783 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8649173955296404 [2022-11-16 11:54:54,783 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1780 transitions. [2022-11-16 11:54:54,784 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1780 transitions. [2022-11-16 11:54:54,785 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:54:54,785 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1780 transitions. [2022-11-16 11:54:54,790 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 84.76190476190476) internal successors, (1780), 21 states have internal predecessors, (1780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:54,795 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 98.0) internal successors, (2156), 22 states have internal predecessors, (2156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:54,797 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 98.0) internal successors, (2156), 22 states have internal predecessors, (2156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:54,797 INFO L175 Difference]: Start difference. First operand has 129 places, 127 transitions, 450 flow. Second operand 21 states and 1780 transitions. [2022-11-16 11:54:54,797 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 162 transitions, 720 flow [2022-11-16 11:54:54,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 162 transitions, 718 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:54:54,806 INFO L231 Difference]: Finished difference. Result has 153 places, 140 transitions, 612 flow [2022-11-16 11:54:54,806 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=448, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=612, PETRI_PLACES=153, PETRI_TRANSITIONS=140} [2022-11-16 11:54:54,809 INFO L288 CegarLoopForPetriNet]: 95 programPoint places, 58 predicate places. [2022-11-16 11:54:54,810 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 140 transitions, 612 flow [2022-11-16 11:54:54,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 85.05555555555556) internal successors, (1531), 18 states have internal predecessors, (1531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:54,811 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:54:54,811 INFO L209 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:54:54,821 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_253f124d-31db-41e8-8575-2eb5dad3f4f6/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-11-16 11:54:55,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_253f124d-31db-41e8-8575-2eb5dad3f4f6/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-16 11:54:55,021 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2022-11-16 11:54:55,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:54:55,022 INFO L85 PathProgramCache]: Analyzing trace with hash -916830186, now seen corresponding path program 2 times [2022-11-16 11:54:55,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:54:55,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467676227] [2022-11-16 11:54:55,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:54:55,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:54:55,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:54:55,464 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:54:55,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:54:55,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467676227] [2022-11-16 11:54:55,465 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467676227] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:54:55,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [546830736] [2022-11-16 11:54:55,465 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:54:55,465 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:54:55,466 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_253f124d-31db-41e8-8575-2eb5dad3f4f6/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:54:55,467 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_253f124d-31db-41e8-8575-2eb5dad3f4f6/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:54:55,498 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_253f124d-31db-41e8-8575-2eb5dad3f4f6/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-16 11:54:55,577 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-16 11:54:55,577 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:54:55,578 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-16 11:54:55,582 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:54:55,630 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2022-11-16 11:54:56,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:54:56,128 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2022-11-16 11:54:56,262 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2022-11-16 11:54:56,316 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2022-11-16 11:54:56,316 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:54:56,317 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [546830736] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:54:56,317 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:54:56,317 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [17] total 26 [2022-11-16 11:54:56,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098901683] [2022-11-16 11:54:56,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:54:56,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-16 11:54:56,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:54:56,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-16 11:54:56,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=547, Unknown=0, NotChecked=0, Total=650 [2022-11-16 11:54:56,320 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 98 [2022-11-16 11:54:56,321 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 140 transitions, 612 flow. Second operand has 11 states, 11 states have (on average 69.36363636363636) internal successors, (763), 11 states have internal predecessors, (763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:56,321 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:54:56,321 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 98 [2022-11-16 11:54:56,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:54:56,798 INFO L130 PetriNetUnfolder]: 183/932 cut-off events. [2022-11-16 11:54:56,798 INFO L131 PetriNetUnfolder]: For 531/543 co-relation queries the response was YES. [2022-11-16 11:54:56,803 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1911 conditions, 932 events. 183/932 cut-off events. For 531/543 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 6053 event pairs, 34 based on Foata normal form. 10/811 useless extension candidates. Maximal degree in co-relation 1710. Up to 271 conditions per place. [2022-11-16 11:54:56,808 INFO L137 encePairwiseOnDemand]: 84/98 looper letters, 60 selfloop transitions, 26 changer transitions 0/180 dead transitions. [2022-11-16 11:54:56,808 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 180 transitions, 938 flow [2022-11-16 11:54:56,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 11:54:56,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-16 11:54:56,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 747 transitions. [2022-11-16 11:54:56,812 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7622448979591837 [2022-11-16 11:54:56,812 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 747 transitions. [2022-11-16 11:54:56,812 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 747 transitions. [2022-11-16 11:54:56,813 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:54:56,813 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 747 transitions. [2022-11-16 11:54:56,815 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 74.7) internal successors, (747), 10 states have internal predecessors, (747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:56,818 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 98.0) internal successors, (1078), 11 states have internal predecessors, (1078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:56,819 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 98.0) internal successors, (1078), 11 states have internal predecessors, (1078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:56,819 INFO L175 Difference]: Start difference. First operand has 153 places, 140 transitions, 612 flow. Second operand 10 states and 747 transitions. [2022-11-16 11:54:56,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 180 transitions, 938 flow [2022-11-16 11:54:56,825 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 180 transitions, 894 flow, removed 15 selfloop flow, removed 7 redundant places. [2022-11-16 11:54:56,828 INFO L231 Difference]: Finished difference. Result has 160 places, 158 transitions, 727 flow [2022-11-16 11:54:56,829 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=568, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=727, PETRI_PLACES=160, PETRI_TRANSITIONS=158} [2022-11-16 11:54:56,830 INFO L288 CegarLoopForPetriNet]: 95 programPoint places, 65 predicate places. [2022-11-16 11:54:56,830 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 158 transitions, 727 flow [2022-11-16 11:54:56,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 69.36363636363636) internal successors, (763), 11 states have internal predecessors, (763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:56,831 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:54:56,831 INFO L209 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:54:56,843 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_253f124d-31db-41e8-8575-2eb5dad3f4f6/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-16 11:54:57,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_253f124d-31db-41e8-8575-2eb5dad3f4f6/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:54:57,037 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2022-11-16 11:54:57,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:54:57,038 INFO L85 PathProgramCache]: Analyzing trace with hash -2074543649, now seen corresponding path program 1 times [2022-11-16 11:54:57,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:54:57,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54231092] [2022-11-16 11:54:57,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:54:57,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:54:57,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:54:57,442 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:54:57,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:54:57,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54231092] [2022-11-16 11:54:57,442 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54231092] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:54:57,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1689217689] [2022-11-16 11:54:57,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:54:57,443 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:54:57,443 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_253f124d-31db-41e8-8575-2eb5dad3f4f6/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:54:57,444 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_253f124d-31db-41e8-8575-2eb5dad3f4f6/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:54:57,474 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_253f124d-31db-41e8-8575-2eb5dad3f4f6/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-16 11:54:57,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:54:57,558 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-16 11:54:57,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:54:57,704 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:54:57,706 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:54:58,006 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:54:58,006 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1689217689] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:54:58,007 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:54:58,007 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 23 [2022-11-16 11:54:58,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641176739] [2022-11-16 11:54:58,007 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:54:58,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-16 11:54:58,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:54:58,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-16 11:54:58,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2022-11-16 11:54:58,011 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 98 [2022-11-16 11:54:58,013 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 158 transitions, 727 flow. Second operand has 23 states, 23 states have (on average 85.30434782608695) internal successors, (1962), 23 states have internal predecessors, (1962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:58,013 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:54:58,014 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 98 [2022-11-16 11:54:58,014 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:54:58,610 INFO L130 PetriNetUnfolder]: 65/701 cut-off events. [2022-11-16 11:54:58,610 INFO L131 PetriNetUnfolder]: For 305/306 co-relation queries the response was YES. [2022-11-16 11:54:58,641 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1344 conditions, 701 events. 65/701 cut-off events. For 305/306 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 3999 event pairs, 4 based on Foata normal form. 4/611 useless extension candidates. Maximal degree in co-relation 1145. Up to 43 conditions per place. [2022-11-16 11:54:58,644 INFO L137 encePairwiseOnDemand]: 92/98 looper letters, 45 selfloop transitions, 30 changer transitions 0/201 dead transitions. [2022-11-16 11:54:58,644 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 201 transitions, 1075 flow [2022-11-16 11:54:58,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-16 11:54:58,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-11-16 11:54:58,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 2538 transitions. [2022-11-16 11:54:58,652 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.863265306122449 [2022-11-16 11:54:58,652 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 2538 transitions. [2022-11-16 11:54:58,652 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 2538 transitions. [2022-11-16 11:54:58,654 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:54:58,654 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 2538 transitions. [2022-11-16 11:54:58,661 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 84.6) internal successors, (2538), 30 states have internal predecessors, (2538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:58,668 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 98.0) internal successors, (3038), 31 states have internal predecessors, (3038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:58,670 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 98.0) internal successors, (3038), 31 states have internal predecessors, (3038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:58,670 INFO L175 Difference]: Start difference. First operand has 160 places, 158 transitions, 727 flow. Second operand 30 states and 2538 transitions. [2022-11-16 11:54:58,671 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 201 transitions, 1075 flow [2022-11-16 11:54:58,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 201 transitions, 1073 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:54:58,681 INFO L231 Difference]: Finished difference. Result has 192 places, 168 transitions, 891 flow [2022-11-16 11:54:58,682 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=725, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=891, PETRI_PLACES=192, PETRI_TRANSITIONS=168} [2022-11-16 11:54:58,683 INFO L288 CegarLoopForPetriNet]: 95 programPoint places, 97 predicate places. [2022-11-16 11:54:58,683 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 168 transitions, 891 flow [2022-11-16 11:54:58,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 85.30434782608695) internal successors, (1962), 23 states have internal predecessors, (1962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:58,684 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:54:58,685 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:54:58,701 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_253f124d-31db-41e8-8575-2eb5dad3f4f6/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-16 11:54:58,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_253f124d-31db-41e8-8575-2eb5dad3f4f6/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:54:58,891 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2022-11-16 11:54:58,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:54:58,892 INFO L85 PathProgramCache]: Analyzing trace with hash 1668173254, now seen corresponding path program 2 times [2022-11-16 11:54:58,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:54:58,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991920909] [2022-11-16 11:54:58,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:54:58,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:54:58,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:54:59,424 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-16 11:54:59,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:54:59,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991920909] [2022-11-16 11:54:59,425 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991920909] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:54:59,425 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:54:59,425 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 11:54:59,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140248401] [2022-11-16 11:54:59,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:54:59,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-16 11:54:59,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:54:59,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-16 11:54:59,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-11-16 11:54:59,428 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 98 [2022-11-16 11:54:59,430 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 168 transitions, 891 flow. Second operand has 11 states, 11 states have (on average 69.45454545454545) internal successors, (764), 11 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:59,430 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:54:59,430 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 98 [2022-11-16 11:54:59,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:55:00,225 INFO L130 PetriNetUnfolder]: 283/1258 cut-off events. [2022-11-16 11:55:00,226 INFO L131 PetriNetUnfolder]: For 1057/1081 co-relation queries the response was YES. [2022-11-16 11:55:00,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2967 conditions, 1258 events. 283/1258 cut-off events. For 1057/1081 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 8499 event pairs, 38 based on Foata normal form. 14/1118 useless extension candidates. Maximal degree in co-relation 2673. Up to 412 conditions per place. [2022-11-16 11:55:00,242 INFO L137 encePairwiseOnDemand]: 83/98 looper letters, 75 selfloop transitions, 40 changer transitions 0/216 dead transitions. [2022-11-16 11:55:00,243 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 216 transitions, 1347 flow [2022-11-16 11:55:00,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-16 11:55:00,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-11-16 11:55:00,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1253 transitions. [2022-11-16 11:55:00,248 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7521008403361344 [2022-11-16 11:55:00,248 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1253 transitions. [2022-11-16 11:55:00,248 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1253 transitions. [2022-11-16 11:55:00,249 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:55:00,249 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1253 transitions. [2022-11-16 11:55:00,253 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 73.70588235294117) internal successors, (1253), 17 states have internal predecessors, (1253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:55:00,258 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 98.0) internal successors, (1764), 18 states have internal predecessors, (1764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:55:00,259 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 98.0) internal successors, (1764), 18 states have internal predecessors, (1764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:55:00,259 INFO L175 Difference]: Start difference. First operand has 192 places, 168 transitions, 891 flow. Second operand 17 states and 1253 transitions. [2022-11-16 11:55:00,260 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 216 transitions, 1347 flow [2022-11-16 11:55:00,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 216 transitions, 1301 flow, removed 5 selfloop flow, removed 18 redundant places. [2022-11-16 11:55:00,276 INFO L231 Difference]: Finished difference. Result has 195 places, 177 transitions, 1022 flow [2022-11-16 11:55:00,277 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=845, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1022, PETRI_PLACES=195, PETRI_TRANSITIONS=177} [2022-11-16 11:55:00,278 INFO L288 CegarLoopForPetriNet]: 95 programPoint places, 100 predicate places. [2022-11-16 11:55:00,278 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 177 transitions, 1022 flow [2022-11-16 11:55:00,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 69.45454545454545) internal successors, (764), 11 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:55:00,279 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:55:00,279 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:55:00,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-16 11:55:00,280 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2022-11-16 11:55:00,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:55:00,281 INFO L85 PathProgramCache]: Analyzing trace with hash 1090785083, now seen corresponding path program 1 times [2022-11-16 11:55:00,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:55:00,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166647461] [2022-11-16 11:55:00,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:55:00,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:55:00,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:00,780 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-16 11:55:00,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:55:00,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166647461] [2022-11-16 11:55:00,780 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166647461] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:55:00,781 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:55:00,781 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 11:55:00,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977274601] [2022-11-16 11:55:00,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:55:00,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-16 11:55:00,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:55:00,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-16 11:55:00,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-11-16 11:55:00,784 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 98 [2022-11-16 11:55:00,786 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 177 transitions, 1022 flow. Second operand has 11 states, 11 states have (on average 69.45454545454545) internal successors, (764), 11 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:55:00,786 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:55:00,786 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 98 [2022-11-16 11:55:00,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:55:01,489 INFO L130 PetriNetUnfolder]: 266/1314 cut-off events. [2022-11-16 11:55:01,490 INFO L131 PetriNetUnfolder]: For 1575/1640 co-relation queries the response was YES. [2022-11-16 11:55:01,500 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3272 conditions, 1314 events. 266/1314 cut-off events. For 1575/1640 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 9115 event pairs, 37 based on Foata normal form. 20/1196 useless extension candidates. Maximal degree in co-relation 3037. Up to 401 conditions per place. [2022-11-16 11:55:01,507 INFO L137 encePairwiseOnDemand]: 83/98 looper letters, 63 selfloop transitions, 36 changer transitions 0/206 dead transitions. [2022-11-16 11:55:01,508 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 206 transitions, 1390 flow [2022-11-16 11:55:01,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-16 11:55:01,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-16 11:55:01,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 959 transitions. [2022-11-16 11:55:01,510 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7527472527472527 [2022-11-16 11:55:01,511 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 959 transitions. [2022-11-16 11:55:01,511 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 959 transitions. [2022-11-16 11:55:01,511 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:55:01,512 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 959 transitions. [2022-11-16 11:55:01,514 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 73.76923076923077) internal successors, (959), 13 states have internal predecessors, (959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:55:01,517 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 98.0) internal successors, (1372), 14 states have internal predecessors, (1372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:55:01,518 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 98.0) internal successors, (1372), 14 states have internal predecessors, (1372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:55:01,518 INFO L175 Difference]: Start difference. First operand has 195 places, 177 transitions, 1022 flow. Second operand 13 states and 959 transitions. [2022-11-16 11:55:01,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 206 transitions, 1390 flow [2022-11-16 11:55:01,532 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 206 transitions, 1348 flow, removed 0 selfloop flow, removed 8 redundant places. [2022-11-16 11:55:01,537 INFO L231 Difference]: Finished difference. Result has 203 places, 181 transitions, 1116 flow [2022-11-16 11:55:01,537 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=986, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1116, PETRI_PLACES=203, PETRI_TRANSITIONS=181} [2022-11-16 11:55:01,538 INFO L288 CegarLoopForPetriNet]: 95 programPoint places, 108 predicate places. [2022-11-16 11:55:01,538 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 181 transitions, 1116 flow [2022-11-16 11:55:01,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 69.45454545454545) internal successors, (764), 11 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:55:01,539 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:55:01,540 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:55:01,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-16 11:55:01,540 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2022-11-16 11:55:01,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:55:01,541 INFO L85 PathProgramCache]: Analyzing trace with hash 1367802321, now seen corresponding path program 1 times [2022-11-16 11:55:01,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:55:01,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308947232] [2022-11-16 11:55:01,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:55:01,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:55:01,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:01,671 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-16 11:55:01,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:55:01,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308947232] [2022-11-16 11:55:01,672 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308947232] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:55:01,672 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:55:01,672 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:55:01,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626501627] [2022-11-16 11:55:01,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:55:01,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:55:01,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:55:01,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:55:01,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:55:01,675 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 98 [2022-11-16 11:55:01,676 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 181 transitions, 1116 flow. Second operand has 4 states, 4 states have (on average 83.75) internal successors, (335), 4 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:55:01,676 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:55:01,676 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 98 [2022-11-16 11:55:01,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:55:02,095 INFO L130 PetriNetUnfolder]: 109/1140 cut-off events. [2022-11-16 11:55:02,095 INFO L131 PetriNetUnfolder]: For 960/984 co-relation queries the response was YES. [2022-11-16 11:55:02,107 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2505 conditions, 1140 events. 109/1140 cut-off events. For 960/984 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 7237 event pairs, 17 based on Foata normal form. 9/1062 useless extension candidates. Maximal degree in co-relation 2236. Up to 119 conditions per place. [2022-11-16 11:55:02,113 INFO L137 encePairwiseOnDemand]: 91/98 looper letters, 19 selfloop transitions, 4 changer transitions 0/188 dead transitions. [2022-11-16 11:55:02,114 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 188 transitions, 1180 flow [2022-11-16 11:55:02,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:55:02,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:55:02,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 433 transitions. [2022-11-16 11:55:02,115 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8836734693877552 [2022-11-16 11:55:02,116 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 433 transitions. [2022-11-16 11:55:02,116 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 433 transitions. [2022-11-16 11:55:02,116 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:55:02,116 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 433 transitions. [2022-11-16 11:55:02,118 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 86.6) internal successors, (433), 5 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:55:02,119 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 98.0) internal successors, (588), 6 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:55:02,119 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 98.0) internal successors, (588), 6 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:55:02,120 INFO L175 Difference]: Start difference. First operand has 203 places, 181 transitions, 1116 flow. Second operand 5 states and 433 transitions. [2022-11-16 11:55:02,120 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 188 transitions, 1180 flow [2022-11-16 11:55:02,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 188 transitions, 1145 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-16 11:55:02,140 INFO L231 Difference]: Finished difference. Result has 204 places, 184 transitions, 1113 flow [2022-11-16 11:55:02,141 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=1081, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1113, PETRI_PLACES=204, PETRI_TRANSITIONS=184} [2022-11-16 11:55:02,142 INFO L288 CegarLoopForPetriNet]: 95 programPoint places, 109 predicate places. [2022-11-16 11:55:02,142 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 184 transitions, 1113 flow [2022-11-16 11:55:02,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 83.75) internal successors, (335), 4 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:55:02,142 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:55:02,143 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:55:02,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-16 11:55:02,143 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2022-11-16 11:55:02,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:55:02,144 INFO L85 PathProgramCache]: Analyzing trace with hash 175245975, now seen corresponding path program 1 times [2022-11-16 11:55:02,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:55:02,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452185524] [2022-11-16 11:55:02,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:55:02,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:55:02,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:02,266 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-16 11:55:02,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:55:02,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452185524] [2022-11-16 11:55:02,269 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452185524] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:55:02,269 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:55:02,269 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:55:02,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722134496] [2022-11-16 11:55:02,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:55:02,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:55:02,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:55:02,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:55:02,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:55:02,272 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 98 [2022-11-16 11:55:02,272 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 184 transitions, 1113 flow. Second operand has 4 states, 4 states have (on average 83.0) internal successors, (332), 4 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:55:02,272 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:55:02,273 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 98 [2022-11-16 11:55:02,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:55:02,648 INFO L130 PetriNetUnfolder]: 105/1163 cut-off events. [2022-11-16 11:55:02,648 INFO L131 PetriNetUnfolder]: For 909/926 co-relation queries the response was YES. [2022-11-16 11:55:02,660 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2593 conditions, 1163 events. 105/1163 cut-off events. For 909/926 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 7352 event pairs, 21 based on Foata normal form. 6/1116 useless extension candidates. Maximal degree in co-relation 2323. Up to 145 conditions per place. [2022-11-16 11:55:02,666 INFO L137 encePairwiseOnDemand]: 91/98 looper letters, 19 selfloop transitions, 4 changer transitions 0/177 dead transitions. [2022-11-16 11:55:02,666 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 177 transitions, 1063 flow [2022-11-16 11:55:02,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:55:02,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:55:02,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 429 transitions. [2022-11-16 11:55:02,668 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8755102040816326 [2022-11-16 11:55:02,668 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 429 transitions. [2022-11-16 11:55:02,668 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 429 transitions. [2022-11-16 11:55:02,669 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:55:02,669 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 429 transitions. [2022-11-16 11:55:02,670 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 85.8) internal successors, (429), 5 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:55:02,671 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 98.0) internal successors, (588), 6 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:55:02,672 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 98.0) internal successors, (588), 6 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:55:02,672 INFO L175 Difference]: Start difference. First operand has 204 places, 184 transitions, 1113 flow. Second operand 5 states and 429 transitions. [2022-11-16 11:55:02,672 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 177 transitions, 1063 flow [2022-11-16 11:55:02,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 177 transitions, 1041 flow, removed 8 selfloop flow, removed 6 redundant places. [2022-11-16 11:55:02,692 INFO L231 Difference]: Finished difference. Result has 199 places, 173 transitions, 1009 flow [2022-11-16 11:55:02,692 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=977, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1009, PETRI_PLACES=199, PETRI_TRANSITIONS=173} [2022-11-16 11:55:02,694 INFO L288 CegarLoopForPetriNet]: 95 programPoint places, 104 predicate places. [2022-11-16 11:55:02,694 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 173 transitions, 1009 flow [2022-11-16 11:55:02,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 83.0) internal successors, (332), 4 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:55:02,695 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:55:02,695 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:55:02,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-16 11:55:02,696 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2022-11-16 11:55:02,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:55:02,696 INFO L85 PathProgramCache]: Analyzing trace with hash 1831747693, now seen corresponding path program 1 times [2022-11-16 11:55:02,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:55:02,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306419890] [2022-11-16 11:55:02,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:55:02,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:55:02,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:03,604 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-16 11:55:03,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:55:03,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306419890] [2022-11-16 11:55:03,605 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306419890] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:55:03,605 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:55:03,605 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-16 11:55:03,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289202104] [2022-11-16 11:55:03,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:55:03,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-16 11:55:03,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:55:03,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-16 11:55:03,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2022-11-16 11:55:03,609 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 98 [2022-11-16 11:55:03,611 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 173 transitions, 1009 flow. Second operand has 16 states, 16 states have (on average 58.5) internal successors, (936), 16 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:55:03,611 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:55:03,611 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 98 [2022-11-16 11:55:03,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:55:06,482 INFO L130 PetriNetUnfolder]: 1585/4638 cut-off events. [2022-11-16 11:55:06,482 INFO L131 PetriNetUnfolder]: For 4212/4212 co-relation queries the response was YES. [2022-11-16 11:55:06,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12516 conditions, 4638 events. 1585/4638 cut-off events. For 4212/4212 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 34872 event pairs, 602 based on Foata normal form. 28/4623 useless extension candidates. Maximal degree in co-relation 12235. Up to 2036 conditions per place. [2022-11-16 11:55:06,558 INFO L137 encePairwiseOnDemand]: 79/98 looper letters, 216 selfloop transitions, 58 changer transitions 0/365 dead transitions. [2022-11-16 11:55:06,558 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 365 transitions, 2476 flow [2022-11-16 11:55:06,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-16 11:55:06,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2022-11-16 11:55:06,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 1531 transitions. [2022-11-16 11:55:06,563 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6792369121561668 [2022-11-16 11:55:06,563 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 1531 transitions. [2022-11-16 11:55:06,563 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 1531 transitions. [2022-11-16 11:55:06,564 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:55:06,564 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 1531 transitions. [2022-11-16 11:55:06,568 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 66.56521739130434) internal successors, (1531), 23 states have internal predecessors, (1531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:55:06,573 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 98.0) internal successors, (2352), 24 states have internal predecessors, (2352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:55:06,575 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 98.0) internal successors, (2352), 24 states have internal predecessors, (2352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:55:06,575 INFO L175 Difference]: Start difference. First operand has 199 places, 173 transitions, 1009 flow. Second operand 23 states and 1531 transitions. [2022-11-16 11:55:06,575 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 365 transitions, 2476 flow [2022-11-16 11:55:06,610 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 365 transitions, 2474 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:55:06,616 INFO L231 Difference]: Finished difference. Result has 233 places, 206 transitions, 1491 flow [2022-11-16 11:55:06,617 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=1007, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=1491, PETRI_PLACES=233, PETRI_TRANSITIONS=206} [2022-11-16 11:55:06,617 INFO L288 CegarLoopForPetriNet]: 95 programPoint places, 138 predicate places. [2022-11-16 11:55:06,618 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 206 transitions, 1491 flow [2022-11-16 11:55:06,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 58.5) internal successors, (936), 16 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:55:06,619 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:55:06,619 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:55:06,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-16 11:55:06,619 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2022-11-16 11:55:06,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:55:06,620 INFO L85 PathProgramCache]: Analyzing trace with hash 849732213, now seen corresponding path program 2 times [2022-11-16 11:55:06,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:55:06,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370891985] [2022-11-16 11:55:06,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:55:06,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:55:06,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:07,776 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-16 11:55:07,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:55:07,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370891985] [2022-11-16 11:55:07,777 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370891985] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:55:07,777 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:55:07,777 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-16 11:55:07,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746478792] [2022-11-16 11:55:07,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:55:07,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-16 11:55:07,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:55:07,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-16 11:55:07,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2022-11-16 11:55:07,780 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 98 [2022-11-16 11:55:07,783 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 206 transitions, 1491 flow. Second operand has 16 states, 16 states have (on average 58.5) internal successors, (936), 16 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:55:07,783 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:55:07,783 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 98 [2022-11-16 11:55:07,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:55:11,618 INFO L130 PetriNetUnfolder]: 1915/5681 cut-off events. [2022-11-16 11:55:11,619 INFO L131 PetriNetUnfolder]: For 11160/11160 co-relation queries the response was YES. [2022-11-16 11:55:11,705 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17198 conditions, 5681 events. 1915/5681 cut-off events. For 11160/11160 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 44550 event pairs, 525 based on Foata normal form. 28/5678 useless extension candidates. Maximal degree in co-relation 16900. Up to 2078 conditions per place. [2022-11-16 11:55:11,745 INFO L137 encePairwiseOnDemand]: 79/98 looper letters, 254 selfloop transitions, 102 changer transitions 0/447 dead transitions. [2022-11-16 11:55:11,746 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 447 transitions, 3690 flow [2022-11-16 11:55:11,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-16 11:55:11,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-11-16 11:55:11,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 2015 transitions. [2022-11-16 11:55:11,752 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6632653061224489 [2022-11-16 11:55:11,752 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 2015 transitions. [2022-11-16 11:55:11,753 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 2015 transitions. [2022-11-16 11:55:11,754 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:55:11,754 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 2015 transitions. [2022-11-16 11:55:11,768 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 65.0) internal successors, (2015), 31 states have internal predecessors, (2015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:55:11,778 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 98.0) internal successors, (3136), 32 states have internal predecessors, (3136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:55:11,780 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 98.0) internal successors, (3136), 32 states have internal predecessors, (3136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:55:11,780 INFO L175 Difference]: Start difference. First operand has 233 places, 206 transitions, 1491 flow. Second operand 31 states and 2015 transitions. [2022-11-16 11:55:11,781 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 447 transitions, 3690 flow [2022-11-16 11:55:11,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 447 transitions, 3528 flow, removed 15 selfloop flow, removed 9 redundant places. [2022-11-16 11:55:11,882 INFO L231 Difference]: Finished difference. Result has 274 places, 262 transitions, 2389 flow [2022-11-16 11:55:11,882 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=1419, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=2389, PETRI_PLACES=274, PETRI_TRANSITIONS=262} [2022-11-16 11:55:11,883 INFO L288 CegarLoopForPetriNet]: 95 programPoint places, 179 predicate places. [2022-11-16 11:55:11,883 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 262 transitions, 2389 flow [2022-11-16 11:55:11,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 58.5) internal successors, (936), 16 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:55:11,884 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:55:11,884 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:55:11,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-16 11:55:11,885 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2022-11-16 11:55:11,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:55:11,886 INFO L85 PathProgramCache]: Analyzing trace with hash -1227308000, now seen corresponding path program 1 times [2022-11-16 11:55:11,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:55:11,886 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34256844] [2022-11-16 11:55:11,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:55:11,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:55:11,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:13,008 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-16 11:55:13,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:55:13,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34256844] [2022-11-16 11:55:13,008 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34256844] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:55:13,008 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:55:13,009 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-16 11:55:13,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136517581] [2022-11-16 11:55:13,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:55:13,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-16 11:55:13,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:55:13,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-16 11:55:13,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2022-11-16 11:55:13,012 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 98 [2022-11-16 11:55:13,014 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 262 transitions, 2389 flow. Second operand has 16 states, 16 states have (on average 58.5) internal successors, (936), 16 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:55:13,014 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:55:13,014 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 98 [2022-11-16 11:55:13,014 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:55:17,219 INFO L130 PetriNetUnfolder]: 2273/6576 cut-off events. [2022-11-16 11:55:17,219 INFO L131 PetriNetUnfolder]: For 22140/22140 co-relation queries the response was YES. [2022-11-16 11:55:17,312 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22219 conditions, 6576 events. 2273/6576 cut-off events. For 22140/22140 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 53986 event pairs, 395 based on Foata normal form. 32/6568 useless extension candidates. Maximal degree in co-relation 21900. Up to 2765 conditions per place. [2022-11-16 11:55:17,345 INFO L137 encePairwiseOnDemand]: 79/98 looper letters, 324 selfloop transitions, 127 changer transitions 0/542 dead transitions. [2022-11-16 11:55:17,345 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 542 transitions, 5450 flow [2022-11-16 11:55:17,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-16 11:55:17,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-11-16 11:55:17,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 2027 transitions. [2022-11-16 11:55:17,354 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6672152732060567 [2022-11-16 11:55:17,354 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 2027 transitions. [2022-11-16 11:55:17,354 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 2027 transitions. [2022-11-16 11:55:17,356 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:55:17,357 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 2027 transitions. [2022-11-16 11:55:17,365 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 65.38709677419355) internal successors, (2027), 31 states have internal predecessors, (2027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:55:17,371 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 98.0) internal successors, (3136), 32 states have internal predecessors, (3136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:55:17,373 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 98.0) internal successors, (3136), 32 states have internal predecessors, (3136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:55:17,373 INFO L175 Difference]: Start difference. First operand has 274 places, 262 transitions, 2389 flow. Second operand 31 states and 2027 transitions. [2022-11-16 11:55:17,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 542 transitions, 5450 flow [2022-11-16 11:55:17,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 542 transitions, 5189 flow, removed 57 selfloop flow, removed 8 redundant places. [2022-11-16 11:55:17,558 INFO L231 Difference]: Finished difference. Result has 315 places, 318 transitions, 3337 flow [2022-11-16 11:55:17,558 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=2219, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=3337, PETRI_PLACES=315, PETRI_TRANSITIONS=318} [2022-11-16 11:55:17,559 INFO L288 CegarLoopForPetriNet]: 95 programPoint places, 220 predicate places. [2022-11-16 11:55:17,559 INFO L495 AbstractCegarLoop]: Abstraction has has 315 places, 318 transitions, 3337 flow [2022-11-16 11:55:17,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 58.5) internal successors, (936), 16 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:55:17,560 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:55:17,560 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:55:17,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-16 11:55:17,561 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2022-11-16 11:55:17,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:55:17,561 INFO L85 PathProgramCache]: Analyzing trace with hash -438500185, now seen corresponding path program 3 times [2022-11-16 11:55:17,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:55:17,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162852564] [2022-11-16 11:55:17,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:55:17,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:55:17,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:18,475 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-16 11:55:18,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:55:18,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162852564] [2022-11-16 11:55:18,475 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162852564] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:55:18,475 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:55:18,476 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-16 11:55:18,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492562051] [2022-11-16 11:55:18,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:55:18,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-16 11:55:18,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:55:18,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-16 11:55:18,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2022-11-16 11:55:18,478 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 98 [2022-11-16 11:55:18,480 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 318 transitions, 3337 flow. Second operand has 16 states, 16 states have (on average 58.5) internal successors, (936), 16 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:55:18,480 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:55:18,480 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 98 [2022-11-16 11:55:18,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:55:24,245 INFO L130 PetriNetUnfolder]: 2694/7780 cut-off events. [2022-11-16 11:55:24,246 INFO L131 PetriNetUnfolder]: For 37413/37413 co-relation queries the response was YES. [2022-11-16 11:55:24,335 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28974 conditions, 7780 events. 2694/7780 cut-off events. For 37413/37413 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 64906 event pairs, 629 based on Foata normal form. 28/7776 useless extension candidates. Maximal degree in co-relation 28634. Up to 2981 conditions per place. [2022-11-16 11:55:24,377 INFO L137 encePairwiseOnDemand]: 79/98 looper letters, 374 selfloop transitions, 168 changer transitions 0/633 dead transitions. [2022-11-16 11:55:24,377 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 633 transitions, 7113 flow [2022-11-16 11:55:24,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-16 11:55:24,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-16 11:55:24,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 2301 transitions. [2022-11-16 11:55:24,397 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6708454810495627 [2022-11-16 11:55:24,398 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 2301 transitions. [2022-11-16 11:55:24,398 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 2301 transitions. [2022-11-16 11:55:24,401 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:55:24,402 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 2301 transitions. [2022-11-16 11:55:24,411 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 65.74285714285715) internal successors, (2301), 35 states have internal predecessors, (2301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:55:24,421 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 98.0) internal successors, (3528), 36 states have internal predecessors, (3528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:55:24,424 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 98.0) internal successors, (3528), 36 states have internal predecessors, (3528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:55:24,426 INFO L175 Difference]: Start difference. First operand has 315 places, 318 transitions, 3337 flow. Second operand 35 states and 2301 transitions. [2022-11-16 11:55:24,426 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 633 transitions, 7113 flow [2022-11-16 11:55:24,801 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 633 transitions, 6787 flow, removed 68 selfloop flow, removed 8 redundant places. [2022-11-16 11:55:24,812 INFO L231 Difference]: Finished difference. Result has 360 places, 384 transitions, 4743 flow [2022-11-16 11:55:24,813 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=3133, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=318, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=4743, PETRI_PLACES=360, PETRI_TRANSITIONS=384} [2022-11-16 11:55:24,813 INFO L288 CegarLoopForPetriNet]: 95 programPoint places, 265 predicate places. [2022-11-16 11:55:24,814 INFO L495 AbstractCegarLoop]: Abstraction has has 360 places, 384 transitions, 4743 flow [2022-11-16 11:55:24,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 58.5) internal successors, (936), 16 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:55:24,815 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:55:24,815 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:55:24,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-16 11:55:24,815 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2022-11-16 11:55:24,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:55:24,816 INFO L85 PathProgramCache]: Analyzing trace with hash 773389416, now seen corresponding path program 2 times [2022-11-16 11:55:24,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:55:24,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078475882] [2022-11-16 11:55:24,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:55:24,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:55:24,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:25,797 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-16 11:55:25,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:55:25,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078475882] [2022-11-16 11:55:25,798 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078475882] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:55:25,798 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:55:25,798 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-16 11:55:25,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339475760] [2022-11-16 11:55:25,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:55:25,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-16 11:55:25,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:55:25,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-16 11:55:25,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2022-11-16 11:55:25,801 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 98 [2022-11-16 11:55:25,802 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 360 places, 384 transitions, 4743 flow. Second operand has 16 states, 16 states have (on average 58.5) internal successors, (936), 16 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:55:25,802 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:55:25,802 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 98 [2022-11-16 11:55:25,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:55:31,358 INFO L130 PetriNetUnfolder]: 3041/8644 cut-off events. [2022-11-16 11:55:31,358 INFO L131 PetriNetUnfolder]: For 58706/58706 co-relation queries the response was YES. [2022-11-16 11:55:31,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34715 conditions, 8644 events. 3041/8644 cut-off events. For 58706/58706 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 74664 event pairs, 507 based on Foata normal form. 32/8634 useless extension candidates. Maximal degree in co-relation 34355. Up to 3639 conditions per place. [2022-11-16 11:55:31,547 INFO L137 encePairwiseOnDemand]: 79/98 looper letters, 445 selfloop transitions, 186 changer transitions 0/722 dead transitions. [2022-11-16 11:55:31,548 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 394 places, 722 transitions, 9182 flow [2022-11-16 11:55:31,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-16 11:55:31,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-16 11:55:31,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 2313 transitions. [2022-11-16 11:55:31,553 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6743440233236152 [2022-11-16 11:55:31,553 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 2313 transitions. [2022-11-16 11:55:31,553 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 2313 transitions. [2022-11-16 11:55:31,555 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:55:31,555 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 2313 transitions. [2022-11-16 11:55:31,560 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 66.08571428571429) internal successors, (2313), 35 states have internal predecessors, (2313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:55:31,566 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 98.0) internal successors, (3528), 36 states have internal predecessors, (3528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:55:31,568 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 98.0) internal successors, (3528), 36 states have internal predecessors, (3528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:55:31,568 INFO L175 Difference]: Start difference. First operand has 360 places, 384 transitions, 4743 flow. Second operand 35 states and 2313 transitions. [2022-11-16 11:55:31,568 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 394 places, 722 transitions, 9182 flow [2022-11-16 11:55:32,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 383 places, 722 transitions, 8533 flow, removed 202 selfloop flow, removed 11 redundant places. [2022-11-16 11:55:32,220 INFO L231 Difference]: Finished difference. Result has 399 places, 439 transitions, 5757 flow [2022-11-16 11:55:32,220 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=4306, PETRI_DIFFERENCE_MINUEND_PLACES=349, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=384, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=135, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=5757, PETRI_PLACES=399, PETRI_TRANSITIONS=439} [2022-11-16 11:55:32,221 INFO L288 CegarLoopForPetriNet]: 95 programPoint places, 304 predicate places. [2022-11-16 11:55:32,221 INFO L495 AbstractCegarLoop]: Abstraction has has 399 places, 439 transitions, 5757 flow [2022-11-16 11:55:32,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 58.5) internal successors, (936), 16 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:55:32,222 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:55:32,222 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:55:32,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-16 11:55:32,223 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2022-11-16 11:55:32,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:55:32,223 INFO L85 PathProgramCache]: Analyzing trace with hash 384261101, now seen corresponding path program 4 times [2022-11-16 11:55:32,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:55:32,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66482279] [2022-11-16 11:55:32,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:55:32,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:55:32,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:33,175 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-16 11:55:33,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:55:33,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66482279] [2022-11-16 11:55:33,175 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66482279] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:55:33,176 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:55:33,176 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-16 11:55:33,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583527437] [2022-11-16 11:55:33,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:55:33,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-16 11:55:33,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:55:33,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-16 11:55:33,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2022-11-16 11:55:33,179 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 98 [2022-11-16 11:55:33,180 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 399 places, 439 transitions, 5757 flow. Second operand has 16 states, 16 states have (on average 58.5) internal successors, (936), 16 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:55:33,181 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:55:33,181 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 98 [2022-11-16 11:55:33,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:55:39,072 INFO L130 PetriNetUnfolder]: 3491/9872 cut-off events. [2022-11-16 11:55:39,073 INFO L131 PetriNetUnfolder]: For 84085/84085 co-relation queries the response was YES. [2022-11-16 11:55:39,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42400 conditions, 9872 events. 3491/9872 cut-off events. For 84085/84085 co-relation queries the response was YES. Maximal size of possible extension queue 226. Compared 87171 event pairs, 816 based on Foata normal form. 28/9862 useless extension candidates. Maximal degree in co-relation 42022. Up to 4520 conditions per place. [2022-11-16 11:55:39,239 INFO L137 encePairwiseOnDemand]: 79/98 looper letters, 422 selfloop transitions, 173 changer transitions 0/686 dead transitions. [2022-11-16 11:55:39,239 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 427 places, 686 transitions, 9166 flow [2022-11-16 11:55:39,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-16 11:55:39,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-11-16 11:55:39,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 1902 transitions. [2022-11-16 11:55:39,243 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.669247009148487 [2022-11-16 11:55:39,244 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 1902 transitions. [2022-11-16 11:55:39,244 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 1902 transitions. [2022-11-16 11:55:39,245 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:55:39,245 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 1902 transitions. [2022-11-16 11:55:39,248 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 65.58620689655173) internal successors, (1902), 29 states have internal predecessors, (1902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:55:39,253 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 98.0) internal successors, (2940), 30 states have internal predecessors, (2940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:55:39,254 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 98.0) internal successors, (2940), 30 states have internal predecessors, (2940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:55:39,254 INFO L175 Difference]: Start difference. First operand has 399 places, 439 transitions, 5757 flow. Second operand 29 states and 1902 transitions. [2022-11-16 11:55:39,254 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 427 places, 686 transitions, 9166 flow [2022-11-16 11:55:40,267 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 413 places, 686 transitions, 8550 flow, removed 190 selfloop flow, removed 14 redundant places. [2022-11-16 11:55:40,280 INFO L231 Difference]: Finished difference. Result has 422 places, 478 transitions, 6444 flow [2022-11-16 11:55:40,281 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=5279, PETRI_DIFFERENCE_MINUEND_PLACES=385, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=439, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=142, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=6444, PETRI_PLACES=422, PETRI_TRANSITIONS=478} [2022-11-16 11:55:40,281 INFO L288 CegarLoopForPetriNet]: 95 programPoint places, 327 predicate places. [2022-11-16 11:55:40,281 INFO L495 AbstractCegarLoop]: Abstraction has has 422 places, 478 transitions, 6444 flow [2022-11-16 11:55:40,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 58.5) internal successors, (936), 16 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:55:40,282 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:55:40,282 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:55:40,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-16 11:55:40,283 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2022-11-16 11:55:40,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:55:40,284 INFO L85 PathProgramCache]: Analyzing trace with hash 251493165, now seen corresponding path program 5 times [2022-11-16 11:55:40,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:55:40,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151402226] [2022-11-16 11:55:40,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:55:40,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:55:40,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:41,073 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-16 11:55:41,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:55:41,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151402226] [2022-11-16 11:55:41,074 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151402226] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:55:41,074 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:55:41,074 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-16 11:55:41,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821351586] [2022-11-16 11:55:41,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:55:41,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-16 11:55:41,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:55:41,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-16 11:55:41,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2022-11-16 11:55:41,077 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 98 [2022-11-16 11:55:41,078 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 422 places, 478 transitions, 6444 flow. Second operand has 16 states, 16 states have (on average 58.5) internal successors, (936), 16 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:55:41,078 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:55:41,079 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 98 [2022-11-16 11:55:41,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:55:47,947 INFO L130 PetriNetUnfolder]: 3794/10710 cut-off events. [2022-11-16 11:55:47,947 INFO L131 PetriNetUnfolder]: For 114994/114994 co-relation queries the response was YES. [2022-11-16 11:55:48,128 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48405 conditions, 10710 events. 3794/10710 cut-off events. For 114994/114994 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 96194 event pairs, 848 based on Foata normal form. 28/10700 useless extension candidates. Maximal degree in co-relation 48019. Up to 4873 conditions per place. [2022-11-16 11:55:48,161 INFO L137 encePairwiseOnDemand]: 79/98 looper letters, 475 selfloop transitions, 188 changer transitions 0/754 dead transitions. [2022-11-16 11:55:48,161 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 454 places, 754 transitions, 10238 flow [2022-11-16 11:55:48,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-16 11:55:48,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-11-16 11:55:48,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 2174 transitions. [2022-11-16 11:55:48,167 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6722325293753865 [2022-11-16 11:55:48,167 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 2174 transitions. [2022-11-16 11:55:48,167 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 2174 transitions. [2022-11-16 11:55:48,168 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:55:48,169 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 2174 transitions. [2022-11-16 11:55:48,174 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 65.87878787878788) internal successors, (2174), 33 states have internal predecessors, (2174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:55:48,180 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 98.0) internal successors, (3332), 34 states have internal predecessors, (3332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:55:48,182 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 98.0) internal successors, (3332), 34 states have internal predecessors, (3332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:55:48,182 INFO L175 Difference]: Start difference. First operand has 422 places, 478 transitions, 6444 flow. Second operand 33 states and 2174 transitions. [2022-11-16 11:55:48,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 454 places, 754 transitions, 10238 flow [2022-11-16 11:55:49,224 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 449 places, 754 transitions, 9814 flow, removed 185 selfloop flow, removed 5 redundant places. [2022-11-16 11:55:49,237 INFO L231 Difference]: Finished difference. Result has 461 places, 511 transitions, 7381 flow [2022-11-16 11:55:49,238 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=6134, PETRI_DIFFERENCE_MINUEND_PLACES=417, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=478, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=157, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=310, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=7381, PETRI_PLACES=461, PETRI_TRANSITIONS=511} [2022-11-16 11:55:49,238 INFO L288 CegarLoopForPetriNet]: 95 programPoint places, 366 predicate places. [2022-11-16 11:55:49,239 INFO L495 AbstractCegarLoop]: Abstraction has has 461 places, 511 transitions, 7381 flow [2022-11-16 11:55:49,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 58.5) internal successors, (936), 16 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:55:49,239 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:55:49,240 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:55:49,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-16 11:55:49,240 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2022-11-16 11:55:49,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:55:49,240 INFO L85 PathProgramCache]: Analyzing trace with hash -416498069, now seen corresponding path program 6 times [2022-11-16 11:55:49,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:55:49,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340892787] [2022-11-16 11:55:49,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:55:49,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:55:49,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:49,993 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-16 11:55:49,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:55:49,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340892787] [2022-11-16 11:55:49,994 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340892787] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:55:49,994 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:55:49,994 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-16 11:55:49,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881385728] [2022-11-16 11:55:49,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:55:49,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-16 11:55:49,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:55:49,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-16 11:55:49,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2022-11-16 11:55:49,997 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 98 [2022-11-16 11:55:49,998 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 461 places, 511 transitions, 7381 flow. Second operand has 16 states, 16 states have (on average 58.5) internal successors, (936), 16 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:55:49,998 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:55:49,999 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 98 [2022-11-16 11:55:49,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:55:56,987 INFO L130 PetriNetUnfolder]: 4110/11576 cut-off events. [2022-11-16 11:55:56,987 INFO L131 PetriNetUnfolder]: For 158167/158167 co-relation queries the response was YES. [2022-11-16 11:55:57,272 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55323 conditions, 11576 events. 4110/11576 cut-off events. For 158167/158167 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 105401 event pairs, 895 based on Foata normal form. 30/11569 useless extension candidates. Maximal degree in co-relation 54924. Up to 4560 conditions per place. [2022-11-16 11:55:57,325 INFO L137 encePairwiseOnDemand]: 79/98 looper letters, 442 selfloop transitions, 236 changer transitions 0/769 dead transitions. [2022-11-16 11:55:57,325 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 495 places, 769 transitions, 11191 flow [2022-11-16 11:55:57,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-16 11:55:57,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-16 11:55:57,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 2277 transitions. [2022-11-16 11:55:57,330 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6638483965014578 [2022-11-16 11:55:57,330 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 2277 transitions. [2022-11-16 11:55:57,331 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 2277 transitions. [2022-11-16 11:55:57,332 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:55:57,333 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 2277 transitions. [2022-11-16 11:55:57,339 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 65.05714285714286) internal successors, (2277), 35 states have internal predecessors, (2277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:55:57,346 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 98.0) internal successors, (3528), 36 states have internal predecessors, (3528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:55:57,347 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 98.0) internal successors, (3528), 36 states have internal predecessors, (3528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:55:57,348 INFO L175 Difference]: Start difference. First operand has 461 places, 511 transitions, 7381 flow. Second operand 35 states and 2277 transitions. [2022-11-16 11:55:57,348 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 495 places, 769 transitions, 11191 flow [2022-11-16 11:55:58,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 479 places, 769 transitions, 10754 flow, removed 105 selfloop flow, removed 16 redundant places. [2022-11-16 11:55:58,552 INFO L231 Difference]: Finished difference. Result has 488 places, 538 transitions, 8322 flow [2022-11-16 11:55:58,553 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=6959, PETRI_DIFFERENCE_MINUEND_PLACES=445, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=511, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=211, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=292, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=8322, PETRI_PLACES=488, PETRI_TRANSITIONS=538} [2022-11-16 11:55:58,553 INFO L288 CegarLoopForPetriNet]: 95 programPoint places, 393 predicate places. [2022-11-16 11:55:58,553 INFO L495 AbstractCegarLoop]: Abstraction has has 488 places, 538 transitions, 8322 flow [2022-11-16 11:55:58,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 58.5) internal successors, (936), 16 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:55:58,554 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:55:58,554 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:55:58,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-16 11:55:58,555 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2022-11-16 11:55:58,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:55:58,555 INFO L85 PathProgramCache]: Analyzing trace with hash 1737405319, now seen corresponding path program 7 times [2022-11-16 11:55:58,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:55:58,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608702962] [2022-11-16 11:55:58,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:55:58,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:55:58,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:59,673 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-16 11:55:59,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:55:59,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608702962] [2022-11-16 11:55:59,674 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608702962] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:55:59,674 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:55:59,674 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-16 11:55:59,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954383900] [2022-11-16 11:55:59,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:55:59,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-16 11:55:59,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:55:59,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-16 11:55:59,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2022-11-16 11:55:59,677 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 98 [2022-11-16 11:55:59,678 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 488 places, 538 transitions, 8322 flow. Second operand has 16 states, 16 states have (on average 58.5) internal successors, (936), 16 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:55:59,678 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:55:59,678 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 98 [2022-11-16 11:55:59,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:56:07,734 INFO L130 PetriNetUnfolder]: 4340/12280 cut-off events. [2022-11-16 11:56:07,734 INFO L131 PetriNetUnfolder]: For 201177/201177 co-relation queries the response was YES. [2022-11-16 11:56:08,068 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61383 conditions, 12280 events. 4340/12280 cut-off events. For 201177/201177 co-relation queries the response was YES. Maximal size of possible extension queue 278. Compared 113109 event pairs, 797 based on Foata normal form. 28/12272 useless extension candidates. Maximal degree in co-relation 60978. Up to 3969 conditions per place. [2022-11-16 11:56:08,439 INFO L137 encePairwiseOnDemand]: 80/98 looper letters, 444 selfloop transitions, 280 changer transitions 0/815 dead transitions. [2022-11-16 11:56:08,439 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 525 places, 815 transitions, 12270 flow [2022-11-16 11:56:08,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-11-16 11:56:08,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-11-16 11:56:08,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 2471 transitions. [2022-11-16 11:56:08,470 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6635338345864662 [2022-11-16 11:56:08,470 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 2471 transitions. [2022-11-16 11:56:08,470 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 2471 transitions. [2022-11-16 11:56:08,471 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:56:08,472 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 2471 transitions. [2022-11-16 11:56:08,476 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 65.02631578947368) internal successors, (2471), 38 states have internal predecessors, (2471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:56:08,484 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 98.0) internal successors, (3822), 39 states have internal predecessors, (3822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:56:08,485 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 98.0) internal successors, (3822), 39 states have internal predecessors, (3822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:56:08,485 INFO L175 Difference]: Start difference. First operand has 488 places, 538 transitions, 8322 flow. Second operand 38 states and 2471 transitions. [2022-11-16 11:56:08,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 525 places, 815 transitions, 12270 flow [2022-11-16 11:56:09,768 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 505 places, 815 transitions, 11819 flow, removed 107 selfloop flow, removed 20 redundant places. [2022-11-16 11:56:09,782 INFO L231 Difference]: Finished difference. Result has 511 places, 551 transitions, 8943 flow [2022-11-16 11:56:09,783 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=7877, PETRI_DIFFERENCE_MINUEND_PLACES=468, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=538, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=270, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=8943, PETRI_PLACES=511, PETRI_TRANSITIONS=551} [2022-11-16 11:56:09,783 INFO L288 CegarLoopForPetriNet]: 95 programPoint places, 416 predicate places. [2022-11-16 11:56:09,784 INFO L495 AbstractCegarLoop]: Abstraction has has 511 places, 551 transitions, 8943 flow [2022-11-16 11:56:09,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 58.5) internal successors, (936), 16 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:56:09,784 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:56:09,784 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:56:09,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-16 11:56:09,784 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2022-11-16 11:56:09,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:56:09,785 INFO L85 PathProgramCache]: Analyzing trace with hash -1940840716, now seen corresponding path program 3 times [2022-11-16 11:56:09,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:56:09,785 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302479105] [2022-11-16 11:56:09,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:56:09,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:56:09,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:10,509 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-16 11:56:10,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:56:10,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302479105] [2022-11-16 11:56:10,509 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302479105] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:56:10,510 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:56:10,510 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-16 11:56:10,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318121146] [2022-11-16 11:56:10,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:56:10,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-16 11:56:10,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:56:10,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-16 11:56:10,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2022-11-16 11:56:10,512 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 98 [2022-11-16 11:56:10,513 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 511 places, 551 transitions, 8943 flow. Second operand has 16 states, 16 states have (on average 58.5) internal successors, (936), 16 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:56:10,513 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:56:10,513 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 98 [2022-11-16 11:56:10,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:56:18,661 INFO L130 PetriNetUnfolder]: 4667/13182 cut-off events. [2022-11-16 11:56:18,661 INFO L131 PetriNetUnfolder]: For 249277/249277 co-relation queries the response was YES. [2022-11-16 11:56:18,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68749 conditions, 13182 events. 4667/13182 cut-off events. For 249277/249277 co-relation queries the response was YES. Maximal size of possible extension queue 316. Compared 125202 event pairs, 729 based on Foata normal form. 32/13159 useless extension candidates. Maximal degree in co-relation 68336. Up to 6104 conditions per place. [2022-11-16 11:56:19,037 INFO L137 encePairwiseOnDemand]: 79/98 looper letters, 604 selfloop transitions, 239 changer transitions 0/934 dead transitions. [2022-11-16 11:56:19,037 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 546 places, 934 transitions, 15894 flow [2022-11-16 11:56:19,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-16 11:56:19,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-11-16 11:56:19,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 2360 transitions. [2022-11-16 11:56:19,042 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6689342403628118 [2022-11-16 11:56:19,042 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 2360 transitions. [2022-11-16 11:56:19,042 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 2360 transitions. [2022-11-16 11:56:19,044 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:56:19,044 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 2360 transitions. [2022-11-16 11:56:19,048 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 65.55555555555556) internal successors, (2360), 36 states have internal predecessors, (2360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:56:19,053 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 98.0) internal successors, (3626), 37 states have internal predecessors, (3626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:56:19,054 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 98.0) internal successors, (3626), 37 states have internal predecessors, (3626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:56:19,054 INFO L175 Difference]: Start difference. First operand has 511 places, 551 transitions, 8943 flow. Second operand 36 states and 2360 transitions. [2022-11-16 11:56:19,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 546 places, 934 transitions, 15894 flow [2022-11-16 11:56:20,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 511 places, 934 transitions, 14785 flow, removed 146 selfloop flow, removed 35 redundant places. [2022-11-16 11:56:20,980 INFO L231 Difference]: Finished difference. Result has 523 places, 584 transitions, 9327 flow [2022-11-16 11:56:20,980 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=8024, PETRI_DIFFERENCE_MINUEND_PLACES=476, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=551, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=208, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=332, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=9327, PETRI_PLACES=523, PETRI_TRANSITIONS=584} [2022-11-16 11:56:20,981 INFO L288 CegarLoopForPetriNet]: 95 programPoint places, 428 predicate places. [2022-11-16 11:56:20,981 INFO L495 AbstractCegarLoop]: Abstraction has has 523 places, 584 transitions, 9327 flow [2022-11-16 11:56:20,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 58.5) internal successors, (936), 16 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:56:20,981 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:56:20,981 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:56:20,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-16 11:56:20,982 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2022-11-16 11:56:20,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:56:20,982 INFO L85 PathProgramCache]: Analyzing trace with hash 1234959968, now seen corresponding path program 4 times [2022-11-16 11:56:20,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:56:20,983 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201534793] [2022-11-16 11:56:20,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:56:20,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:56:21,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:21,850 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-16 11:56:21,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:56:21,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201534793] [2022-11-16 11:56:21,850 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201534793] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:56:21,850 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:56:21,851 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-16 11:56:21,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362795964] [2022-11-16 11:56:21,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:56:21,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-16 11:56:21,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:56:21,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-16 11:56:21,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2022-11-16 11:56:21,855 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 98 [2022-11-16 11:56:21,856 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 523 places, 584 transitions, 9327 flow. Second operand has 16 states, 16 states have (on average 58.5) internal successors, (936), 16 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:56:21,856 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:56:21,857 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 98 [2022-11-16 11:56:21,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:56:30,693 INFO L130 PetriNetUnfolder]: 5019/14165 cut-off events. [2022-11-16 11:56:30,693 INFO L131 PetriNetUnfolder]: For 277886/277886 co-relation queries the response was YES. [2022-11-16 11:56:31,018 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75600 conditions, 14165 events. 5019/14165 cut-off events. For 277886/277886 co-relation queries the response was YES. Maximal size of possible extension queue 341. Compared 136474 event pairs, 672 based on Foata normal form. 34/14153 useless extension candidates. Maximal degree in co-relation 75179. Up to 5366 conditions per place. [2022-11-16 11:56:31,078 INFO L137 encePairwiseOnDemand]: 79/98 looper letters, 535 selfloop transitions, 316 changer transitions 0/942 dead transitions. [2022-11-16 11:56:31,078 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 560 places, 942 transitions, 16020 flow [2022-11-16 11:56:31,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-11-16 11:56:31,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-11-16 11:56:31,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 2463 transitions. [2022-11-16 11:56:31,084 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6613856068743287 [2022-11-16 11:56:31,085 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 2463 transitions. [2022-11-16 11:56:31,085 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 2463 transitions. [2022-11-16 11:56:31,086 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:56:31,087 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 2463 transitions. [2022-11-16 11:56:31,093 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 64.8157894736842) internal successors, (2463), 38 states have internal predecessors, (2463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:56:31,099 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 98.0) internal successors, (3822), 39 states have internal predecessors, (3822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:56:31,100 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 98.0) internal successors, (3822), 39 states have internal predecessors, (3822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:56:31,101 INFO L175 Difference]: Start difference. First operand has 523 places, 584 transitions, 9327 flow. Second operand 38 states and 2463 transitions. [2022-11-16 11:56:31,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 560 places, 942 transitions, 16020 flow [2022-11-16 11:56:33,385 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 546 places, 942 transitions, 15725 flow, removed 52 selfloop flow, removed 14 redundant places. [2022-11-16 11:56:33,400 INFO L231 Difference]: Finished difference. Result has 555 places, 611 transitions, 10566 flow [2022-11-16 11:56:33,401 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=9032, PETRI_DIFFERENCE_MINUEND_PLACES=509, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=584, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=291, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=285, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=10566, PETRI_PLACES=555, PETRI_TRANSITIONS=611} [2022-11-16 11:56:33,402 INFO L288 CegarLoopForPetriNet]: 95 programPoint places, 460 predicate places. [2022-11-16 11:56:33,402 INFO L495 AbstractCegarLoop]: Abstraction has has 555 places, 611 transitions, 10566 flow [2022-11-16 11:56:33,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 58.5) internal successors, (936), 16 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:56:33,403 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:56:33,403 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:56:33,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-16 11:56:33,403 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2022-11-16 11:56:33,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:56:33,404 INFO L85 PathProgramCache]: Analyzing trace with hash 1034817384, now seen corresponding path program 5 times [2022-11-16 11:56:33,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:56:33,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129372769] [2022-11-16 11:56:33,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:56:33,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:56:33,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:34,103 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-16 11:56:34,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:56:34,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129372769] [2022-11-16 11:56:34,103 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129372769] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:56:34,103 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:56:34,103 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-16 11:56:34,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110254463] [2022-11-16 11:56:34,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:56:34,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-16 11:56:34,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:56:34,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-16 11:56:34,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2022-11-16 11:56:34,105 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 98 [2022-11-16 11:56:34,106 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 555 places, 611 transitions, 10566 flow. Second operand has 16 states, 16 states have (on average 58.5) internal successors, (936), 16 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:56:34,106 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:56:34,107 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 98 [2022-11-16 11:56:34,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:56:43,191 INFO L130 PetriNetUnfolder]: 5261/14764 cut-off events. [2022-11-16 11:56:43,191 INFO L131 PetriNetUnfolder]: For 329764/329764 co-relation queries the response was YES. [2022-11-16 11:56:43,646 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83076 conditions, 14764 events. 5261/14764 cut-off events. For 329764/329764 co-relation queries the response was YES. Maximal size of possible extension queue 362. Compared 143374 event pairs, 610 based on Foata normal form. 32/14745 useless extension candidates. Maximal degree in co-relation 82644. Up to 5340 conditions per place. [2022-11-16 11:56:43,701 INFO L137 encePairwiseOnDemand]: 80/98 looper letters, 539 selfloop transitions, 324 changer transitions 0/954 dead transitions. [2022-11-16 11:56:43,701 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 587 places, 954 transitions, 17006 flow [2022-11-16 11:56:43,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-16 11:56:43,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-11-16 11:56:43,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 2167 transitions. [2022-11-16 11:56:43,705 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6700680272108843 [2022-11-16 11:56:43,706 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 2167 transitions. [2022-11-16 11:56:43,706 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 2167 transitions. [2022-11-16 11:56:43,707 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:56:43,707 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 2167 transitions. [2022-11-16 11:56:43,711 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 65.66666666666667) internal successors, (2167), 33 states have internal predecessors, (2167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:56:43,716 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 98.0) internal successors, (3332), 34 states have internal predecessors, (3332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:56:43,717 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 98.0) internal successors, (3332), 34 states have internal predecessors, (3332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:56:43,717 INFO L175 Difference]: Start difference. First operand has 555 places, 611 transitions, 10566 flow. Second operand 33 states and 2167 transitions. [2022-11-16 11:56:43,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 587 places, 954 transitions, 17006 flow [2022-11-16 11:56:47,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 559 places, 954 transitions, 16514 flow, removed 73 selfloop flow, removed 28 redundant places. [2022-11-16 11:56:47,344 INFO L231 Difference]: Finished difference. Result has 565 places, 624 transitions, 11208 flow [2022-11-16 11:56:47,345 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=10092, PETRI_DIFFERENCE_MINUEND_PLACES=527, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=611, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=314, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=290, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=11208, PETRI_PLACES=565, PETRI_TRANSITIONS=624} [2022-11-16 11:56:47,345 INFO L288 CegarLoopForPetriNet]: 95 programPoint places, 470 predicate places. [2022-11-16 11:56:47,345 INFO L495 AbstractCegarLoop]: Abstraction has has 565 places, 624 transitions, 11208 flow [2022-11-16 11:56:47,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 58.5) internal successors, (936), 16 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:56:47,346 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:56:47,346 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:56:47,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-16 11:56:47,346 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2022-11-16 11:56:47,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:56:47,347 INFO L85 PathProgramCache]: Analyzing trace with hash 169037641, now seen corresponding path program 8 times [2022-11-16 11:56:47,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:56:47,347 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844390975] [2022-11-16 11:56:47,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:56:47,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:56:47,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:47,987 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-16 11:56:47,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:56:47,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844390975] [2022-11-16 11:56:47,988 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844390975] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:56:47,988 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:56:47,988 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-16 11:56:47,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812393947] [2022-11-16 11:56:47,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:56:47,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-16 11:56:47,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:56:47,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-16 11:56:47,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2022-11-16 11:56:47,991 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 98 [2022-11-16 11:56:47,992 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 565 places, 624 transitions, 11208 flow. Second operand has 16 states, 16 states have (on average 58.5) internal successors, (936), 16 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:56:47,992 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:56:47,992 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 98 [2022-11-16 11:56:47,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand