./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/04-mutex_46-escape_nr.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_a179ecfb-bb62-400d-97da-7f56ea0f7cb6/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a179ecfb-bb62-400d-97da-7f56ea0f7cb6/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_a179ecfb-bb62-400d-97da-7f56ea0f7cb6/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a179ecfb-bb62-400d-97da-7f56ea0f7cb6/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/04-mutex_46-escape_nr.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a179ecfb-bb62-400d-97da-7f56ea0f7cb6/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_a179ecfb-bb62-400d-97da-7f56ea0f7cb6/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 b71c523f20411078d17c9943b891d34ddfc00131917c4009fb579cdffacef23c --- 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 12:00:39,184 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:00:39,186 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:00:39,207 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:00:39,208 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:00:39,209 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:00:39,210 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:00:39,212 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:00:39,214 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:00:39,215 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:00:39,216 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:00:39,217 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:00:39,217 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:00:39,219 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:00:39,220 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:00:39,221 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:00:39,222 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:00:39,223 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:00:39,224 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:00:39,226 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:00:39,228 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:00:39,229 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:00:39,230 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:00:39,231 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:00:39,235 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:00:39,235 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:00:39,236 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:00:39,237 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:00:39,237 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:00:39,238 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:00:39,239 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:00:39,239 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:00:39,240 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:00:39,241 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:00:39,242 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:00:39,242 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:00:39,243 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:00:39,243 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:00:39,244 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:00:39,245 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:00:39,245 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:00:39,250 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a179ecfb-bb62-400d-97da-7f56ea0f7cb6/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-16 12:00:39,284 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:00:39,284 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:00:39,284 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:00:39,285 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:00:39,285 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:00:39,285 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:00:39,286 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:00:39,286 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:00:39,291 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:00:39,292 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:00:39,293 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 12:00:39,293 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 12:00:39,293 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 12:00:39,293 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 12:00:39,293 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:00:39,294 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 12:00:39,294 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:00:39,294 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 12:00:39,294 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-16 12:00:39,294 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 12:00:39,294 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 12:00:39,295 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:00:39,295 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 12:00:39,295 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:00:39,296 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:00:39,296 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:00:39,296 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:00:39,296 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:00:39,296 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:00:39,297 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 12:00:39,297 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 12:00:39,297 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 12:00:39,298 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 12:00:39,298 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 12:00:39,298 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 12:00:39,298 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_a179ecfb-bb62-400d-97da-7f56ea0f7cb6/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a179ecfb-bb62-400d-97da-7f56ea0f7cb6/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b71c523f20411078d17c9943b891d34ddfc00131917c4009fb579cdffacef23c [2022-11-16 12:00:39,661 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:00:39,693 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:00:39,695 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:00:39,696 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:00:39,701 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:00:39,702 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a179ecfb-bb62-400d-97da-7f56ea0f7cb6/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/goblint-regression/04-mutex_46-escape_nr.i [2022-11-16 12:00:39,776 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a179ecfb-bb62-400d-97da-7f56ea0f7cb6/bin/uautomizer-tPACEb0tL8/data/ddc881331/d766731bf41a4c599526cdaceb7eca69/FLAG56486ebe0 [2022-11-16 12:00:40,399 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:00:40,400 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a179ecfb-bb62-400d-97da-7f56ea0f7cb6/sv-benchmarks/c/goblint-regression/04-mutex_46-escape_nr.i [2022-11-16 12:00:40,413 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a179ecfb-bb62-400d-97da-7f56ea0f7cb6/bin/uautomizer-tPACEb0tL8/data/ddc881331/d766731bf41a4c599526cdaceb7eca69/FLAG56486ebe0 [2022-11-16 12:00:40,658 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a179ecfb-bb62-400d-97da-7f56ea0f7cb6/bin/uautomizer-tPACEb0tL8/data/ddc881331/d766731bf41a4c599526cdaceb7eca69 [2022-11-16 12:00:40,661 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:00:40,662 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:00:40,664 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:00:40,664 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:00:40,668 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:00:40,669 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:00:40" (1/1) ... [2022-11-16 12:00:40,670 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34d3491c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:00:40, skipping insertion in model container [2022-11-16 12:00:40,670 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:00:40" (1/1) ... [2022-11-16 12:00:40,677 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:00:40,723 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:00:41,285 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:00:41,300 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 12:00:41,359 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:00:41,419 INFO L208 MainTranslator]: Completed translation [2022-11-16 12:00:41,419 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:00:41 WrapperNode [2022-11-16 12:00:41,419 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:00:41,420 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 12:00:41,421 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 12:00:41,421 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 12:00:41,428 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:00:41" (1/1) ... [2022-11-16 12:00:41,457 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:00:41" (1/1) ... [2022-11-16 12:00:41,495 INFO L138 Inliner]: procedures = 263, calls = 27, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 64 [2022-11-16 12:00:41,496 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 12:00:41,497 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 12:00:41,497 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 12:00:41,497 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 12:00:41,506 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:00:41" (1/1) ... [2022-11-16 12:00:41,507 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:00:41" (1/1) ... [2022-11-16 12:00:41,519 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:00:41" (1/1) ... [2022-11-16 12:00:41,520 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:00:41" (1/1) ... [2022-11-16 12:00:41,532 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:00:41" (1/1) ... [2022-11-16 12:00:41,538 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:00:41" (1/1) ... [2022-11-16 12:00:41,540 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:00:41" (1/1) ... [2022-11-16 12:00:41,541 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:00:41" (1/1) ... [2022-11-16 12:00:41,545 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 12:00:41,553 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 12:00:41,554 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 12:00:41,554 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 12:00:41,555 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:00:41" (1/1) ... [2022-11-16 12:00:41,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:00:41,581 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a179ecfb-bb62-400d-97da-7f56ea0f7cb6/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:00:41,600 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a179ecfb-bb62-400d-97da-7f56ea0f7cb6/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 12:00:41,624 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a179ecfb-bb62-400d-97da-7f56ea0f7cb6/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 12:00:41,642 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 12:00:41,642 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 12:00:41,642 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 12:00:41,642 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 12:00:41,642 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-16 12:00:41,643 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 12:00:41,643 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-16 12:00:41,643 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-16 12:00:41,643 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 12:00:41,643 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 12:00:41,643 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 12:00:41,645 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 12:00:41,871 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 12:00:41,873 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 12:00:42,154 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 12:00:42,161 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 12:00:42,162 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-16 12:00:42,164 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:00:42 BoogieIcfgContainer [2022-11-16 12:00:42,164 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 12:00:42,167 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 12:00:42,167 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 12:00:42,171 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 12:00:42,171 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:00:40" (1/3) ... [2022-11-16 12:00:42,172 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c0c7b79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:00:42, skipping insertion in model container [2022-11-16 12:00:42,172 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:00:41" (2/3) ... [2022-11-16 12:00:42,172 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c0c7b79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:00:42, skipping insertion in model container [2022-11-16 12:00:42,173 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:00:42" (3/3) ... [2022-11-16 12:00:42,174 INFO L112 eAbstractionObserver]: Analyzing ICFG 04-mutex_46-escape_nr.i [2022-11-16 12:00:42,183 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 12:00:42,194 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 12:00:42,194 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-11-16 12:00:42,194 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 12:00:42,242 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-11-16 12:00:42,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 88 places, 85 transitions, 178 flow [2022-11-16 12:00:42,318 INFO L130 PetriNetUnfolder]: 1/84 cut-off events. [2022-11-16 12:00:42,318 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-16 12:00:42,322 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 84 events. 1/84 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 69 event pairs, 0 based on Foata normal form. 0/79 useless extension candidates. Maximal degree in co-relation 6. Up to 2 conditions per place. [2022-11-16 12:00:42,322 INFO L82 GeneralOperation]: Start removeDead. Operand has 88 places, 85 transitions, 178 flow [2022-11-16 12:00:42,326 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 71 places, 67 transitions, 137 flow [2022-11-16 12:00:42,337 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:00:42,343 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;@3af99b16, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:00:42,344 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-11-16 12:00:42,359 INFO L130 PetriNetUnfolder]: 0/48 cut-off events. [2022-11-16 12:00:42,359 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 12:00:42,360 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:00:42,360 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:00:42,361 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 12:00:42,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:00:42,367 INFO L85 PathProgramCache]: Analyzing trace with hash -2001792427, now seen corresponding path program 1 times [2022-11-16 12:00:42,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:00:42,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101080602] [2022-11-16 12:00:42,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:00:42,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:00:42,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:00:43,249 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 12:00:43,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:00:43,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101080602] [2022-11-16 12:00:43,251 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101080602] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:00:43,251 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:00:43,251 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-16 12:00:43,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703027720] [2022-11-16 12:00:43,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:00:43,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 12:00:43,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:00:43,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 12:00:43,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:00:43,300 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 85 [2022-11-16 12:00:43,303 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 67 transitions, 137 flow. Second operand has 9 states, 9 states have (on average 48.111111111111114) internal successors, (433), 9 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 12:00:43,304 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:00:43,304 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 85 [2022-11-16 12:00:43,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:00:43,600 INFO L130 PetriNetUnfolder]: 18/142 cut-off events. [2022-11-16 12:00:43,600 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 12:00:43,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 218 conditions, 142 events. 18/142 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 482 event pairs, 0 based on Foata normal form. 0/135 useless extension candidates. Maximal degree in co-relation 161. Up to 21 conditions per place. [2022-11-16 12:00:43,603 INFO L137 encePairwiseOnDemand]: 72/85 looper letters, 27 selfloop transitions, 15 changer transitions 9/90 dead transitions. [2022-11-16 12:00:43,603 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 90 transitions, 285 flow [2022-11-16 12:00:43,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-16 12:00:43,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-16 12:00:43,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 605 transitions. [2022-11-16 12:00:43,622 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5931372549019608 [2022-11-16 12:00:43,623 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 605 transitions. [2022-11-16 12:00:43,624 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 605 transitions. [2022-11-16 12:00:43,626 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:00:43,628 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 605 transitions. [2022-11-16 12:00:43,632 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 50.416666666666664) internal successors, (605), 12 states have internal predecessors, (605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:43,646 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 85.0) internal successors, (1105), 13 states have internal predecessors, (1105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:43,651 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 85.0) internal successors, (1105), 13 states have internal predecessors, (1105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:43,653 INFO L175 Difference]: Start difference. First operand has 71 places, 67 transitions, 137 flow. Second operand 12 states and 605 transitions. [2022-11-16 12:00:43,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 90 transitions, 285 flow [2022-11-16 12:00:43,657 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 90 transitions, 284 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 12:00:43,660 INFO L231 Difference]: Finished difference. Result has 85 places, 73 transitions, 203 flow [2022-11-16 12:00:43,662 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=203, PETRI_PLACES=85, PETRI_TRANSITIONS=73} [2022-11-16 12:00:43,666 INFO L288 CegarLoopForPetriNet]: 71 programPoint places, 14 predicate places. [2022-11-16 12:00:43,666 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 73 transitions, 203 flow [2022-11-16 12:00:43,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 48.111111111111114) internal successors, (433), 9 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 12:00:43,667 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:00:43,667 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:00:43,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 12:00:43,668 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 12:00:43,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:00:43,669 INFO L85 PathProgramCache]: Analyzing trace with hash 214636834, now seen corresponding path program 1 times [2022-11-16 12:00:43,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:00:43,669 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788191419] [2022-11-16 12:00:43,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:00:43,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:00:43,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:00:44,146 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 12:00:44,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:00:44,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788191419] [2022-11-16 12:00:44,147 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788191419] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:00:44,147 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:00:44,147 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-16 12:00:44,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738319022] [2022-11-16 12:00:44,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:00:44,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 12:00:44,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:00:44,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 12:00:44,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-16 12:00:44,151 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 85 [2022-11-16 12:00:44,152 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 73 transitions, 203 flow. Second operand has 12 states, 12 states have (on average 45.75) internal successors, (549), 12 states have internal predecessors, (549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:44,153 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:00:44,153 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 85 [2022-11-16 12:00:44,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:00:44,632 INFO L130 PetriNetUnfolder]: 28/176 cut-off events. [2022-11-16 12:00:44,632 INFO L131 PetriNetUnfolder]: For 39/39 co-relation queries the response was YES. [2022-11-16 12:00:44,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 363 conditions, 176 events. 28/176 cut-off events. For 39/39 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 704 event pairs, 5 based on Foata normal form. 0/167 useless extension candidates. Maximal degree in co-relation 296. Up to 32 conditions per place. [2022-11-16 12:00:44,635 INFO L137 encePairwiseOnDemand]: 69/85 looper letters, 33 selfloop transitions, 22 changer transitions 2/97 dead transitions. [2022-11-16 12:00:44,635 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 97 transitions, 397 flow [2022-11-16 12:00:44,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-16 12:00:44,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-16 12:00:44,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 717 transitions. [2022-11-16 12:00:44,639 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5623529411764706 [2022-11-16 12:00:44,640 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 717 transitions. [2022-11-16 12:00:44,640 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 717 transitions. [2022-11-16 12:00:44,641 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:00:44,641 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 717 transitions. [2022-11-16 12:00:44,644 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 47.8) internal successors, (717), 15 states have internal predecessors, (717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:44,650 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 85.0) internal successors, (1360), 16 states have internal predecessors, (1360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:44,651 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 85.0) internal successors, (1360), 16 states have internal predecessors, (1360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:44,652 INFO L175 Difference]: Start difference. First operand has 85 places, 73 transitions, 203 flow. Second operand 15 states and 717 transitions. [2022-11-16 12:00:44,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 97 transitions, 397 flow [2022-11-16 12:00:44,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 97 transitions, 379 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-16 12:00:44,661 INFO L231 Difference]: Finished difference. Result has 99 places, 83 transitions, 306 flow [2022-11-16 12:00:44,661 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=189, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=306, PETRI_PLACES=99, PETRI_TRANSITIONS=83} [2022-11-16 12:00:44,662 INFO L288 CegarLoopForPetriNet]: 71 programPoint places, 28 predicate places. [2022-11-16 12:00:44,662 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 83 transitions, 306 flow [2022-11-16 12:00:44,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 45.75) internal successors, (549), 12 states have internal predecessors, (549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:44,663 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:00:44,664 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:00:44,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 12:00:44,664 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 12:00:44,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:00:44,666 INFO L85 PathProgramCache]: Analyzing trace with hash -1926022958, now seen corresponding path program 1 times [2022-11-16 12:00:44,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:00:44,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963955192] [2022-11-16 12:00:44,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:00:44,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:00:44,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:00:44,926 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 12:00:44,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:00:44,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963955192] [2022-11-16 12:00:44,929 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963955192] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:00:44,930 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:00:44,930 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-16 12:00:44,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342605853] [2022-11-16 12:00:44,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:00:44,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 12:00:44,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:00:44,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 12:00:44,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:00:44,933 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 85 [2022-11-16 12:00:44,934 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 83 transitions, 306 flow. Second operand has 9 states, 9 states have (on average 50.22222222222222) internal successors, (452), 9 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:44,934 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:00:44,934 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 85 [2022-11-16 12:00:44,935 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:00:45,204 INFO L130 PetriNetUnfolder]: 13/141 cut-off events. [2022-11-16 12:00:45,204 INFO L131 PetriNetUnfolder]: For 84/88 co-relation queries the response was YES. [2022-11-16 12:00:45,205 INFO L83 FinitePrefix]: Finished finitePrefix Result has 332 conditions, 141 events. 13/141 cut-off events. For 84/88 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 481 event pairs, 0 based on Foata normal form. 7/148 useless extension candidates. Maximal degree in co-relation 255. Up to 19 conditions per place. [2022-11-16 12:00:45,206 INFO L137 encePairwiseOnDemand]: 72/85 looper letters, 29 selfloop transitions, 11 changer transitions 6/90 dead transitions. [2022-11-16 12:00:45,206 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 90 transitions, 420 flow [2022-11-16 12:00:45,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-16 12:00:45,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-16 12:00:45,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 666 transitions. [2022-11-16 12:00:45,209 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6027149321266968 [2022-11-16 12:00:45,210 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 666 transitions. [2022-11-16 12:00:45,210 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 666 transitions. [2022-11-16 12:00:45,210 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:00:45,211 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 666 transitions. [2022-11-16 12:00:45,212 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 51.23076923076923) internal successors, (666), 13 states have internal predecessors, (666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:45,216 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 85.0) internal successors, (1190), 14 states have internal predecessors, (1190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:45,217 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 85.0) internal successors, (1190), 14 states have internal predecessors, (1190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:45,217 INFO L175 Difference]: Start difference. First operand has 99 places, 83 transitions, 306 flow. Second operand 13 states and 666 transitions. [2022-11-16 12:00:45,217 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 90 transitions, 420 flow [2022-11-16 12:00:45,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 90 transitions, 397 flow, removed 0 selfloop flow, removed 8 redundant places. [2022-11-16 12:00:45,224 INFO L231 Difference]: Finished difference. Result has 104 places, 79 transitions, 288 flow [2022-11-16 12:00:45,225 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=279, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=288, PETRI_PLACES=104, PETRI_TRANSITIONS=79} [2022-11-16 12:00:45,227 INFO L288 CegarLoopForPetriNet]: 71 programPoint places, 33 predicate places. [2022-11-16 12:00:45,227 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 79 transitions, 288 flow [2022-11-16 12:00:45,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 50.22222222222222) internal successors, (452), 9 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:45,228 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:00:45,228 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:00:45,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 12:00:45,229 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 12:00:45,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:00:45,230 INFO L85 PathProgramCache]: Analyzing trace with hash -1936192526, now seen corresponding path program 1 times [2022-11-16 12:00:45,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:00:45,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772266127] [2022-11-16 12:00:45,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:00:45,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:00:45,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:00:45,553 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 12:00:45,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:00:45,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772266127] [2022-11-16 12:00:45,554 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772266127] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:00:45,554 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:00:45,554 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-16 12:00:45,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504023329] [2022-11-16 12:00:45,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:00:45,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 12:00:45,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:00:45,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 12:00:45,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-16 12:00:45,562 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 85 [2022-11-16 12:00:45,563 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 79 transitions, 288 flow. Second operand has 12 states, 12 states have (on average 47.833333333333336) internal successors, (574), 12 states have internal predecessors, (574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:45,563 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:00:45,563 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 85 [2022-11-16 12:00:45,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:00:46,015 INFO L130 PetriNetUnfolder]: 24/150 cut-off events. [2022-11-16 12:00:46,015 INFO L131 PetriNetUnfolder]: For 122/124 co-relation queries the response was YES. [2022-11-16 12:00:46,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 377 conditions, 150 events. 24/150 cut-off events. For 122/124 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 509 event pairs, 4 based on Foata normal form. 6/155 useless extension candidates. Maximal degree in co-relation 299. Up to 23 conditions per place. [2022-11-16 12:00:46,017 INFO L137 encePairwiseOnDemand]: 69/85 looper letters, 27 selfloop transitions, 16 changer transitions 10/91 dead transitions. [2022-11-16 12:00:46,017 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 91 transitions, 440 flow [2022-11-16 12:00:46,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-16 12:00:46,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-11-16 12:00:46,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 789 transitions. [2022-11-16 12:00:46,020 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5801470588235295 [2022-11-16 12:00:46,020 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 789 transitions. [2022-11-16 12:00:46,020 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 789 transitions. [2022-11-16 12:00:46,021 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:00:46,021 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 789 transitions. [2022-11-16 12:00:46,023 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 49.3125) internal successors, (789), 16 states have internal predecessors, (789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:46,026 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 85.0) internal successors, (1445), 17 states have internal predecessors, (1445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:46,026 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 85.0) internal successors, (1445), 17 states have internal predecessors, (1445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:46,027 INFO L175 Difference]: Start difference. First operand has 104 places, 79 transitions, 288 flow. Second operand 16 states and 789 transitions. [2022-11-16 12:00:46,027 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 91 transitions, 440 flow [2022-11-16 12:00:46,029 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 91 transitions, 386 flow, removed 2 selfloop flow, removed 12 redundant places. [2022-11-16 12:00:46,030 INFO L231 Difference]: Finished difference. Result has 105 places, 75 transitions, 265 flow [2022-11-16 12:00:46,031 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=265, PETRI_PLACES=105, PETRI_TRANSITIONS=75} [2022-11-16 12:00:46,031 INFO L288 CegarLoopForPetriNet]: 71 programPoint places, 34 predicate places. [2022-11-16 12:00:46,032 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 75 transitions, 265 flow [2022-11-16 12:00:46,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 47.833333333333336) internal successors, (574), 12 states have internal predecessors, (574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:46,032 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:00:46,032 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:00:46,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 12:00:46,033 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 12:00:46,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:00:46,033 INFO L85 PathProgramCache]: Analyzing trace with hash -761037377, now seen corresponding path program 1 times [2022-11-16 12:00:46,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:00:46,034 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783123477] [2022-11-16 12:00:46,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:00:46,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:00:46,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:00:46,106 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 12:00:46,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:00:46,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783123477] [2022-11-16 12:00:46,107 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783123477] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:00:46,107 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:00:46,107 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:00:46,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28228470] [2022-11-16 12:00:46,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:00:46,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:00:46,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:00:46,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:00:46,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:00:46,109 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 85 [2022-11-16 12:00:46,109 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 75 transitions, 265 flow. Second operand has 3 states, 3 states have (on average 76.0) internal successors, (228), 3 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:46,109 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:00:46,109 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 85 [2022-11-16 12:00:46,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:00:46,134 INFO L130 PetriNetUnfolder]: 2/89 cut-off events. [2022-11-16 12:00:46,135 INFO L131 PetriNetUnfolder]: For 24/24 co-relation queries the response was YES. [2022-11-16 12:00:46,135 INFO L83 FinitePrefix]: Finished finitePrefix Result has 177 conditions, 89 events. 2/89 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 104 event pairs, 0 based on Foata normal form. 2/91 useless extension candidates. Maximal degree in co-relation 134. Up to 12 conditions per place. [2022-11-16 12:00:46,136 INFO L137 encePairwiseOnDemand]: 81/85 looper letters, 7 selfloop transitions, 4 changer transitions 0/75 dead transitions. [2022-11-16 12:00:46,136 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 75 transitions, 287 flow [2022-11-16 12:00:46,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:00:46,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 12:00:46,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 232 transitions. [2022-11-16 12:00:46,139 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9098039215686274 [2022-11-16 12:00:46,139 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 232 transitions. [2022-11-16 12:00:46,139 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 232 transitions. [2022-11-16 12:00:46,139 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:00:46,139 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 232 transitions. [2022-11-16 12:00:46,140 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:46,141 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 85.0) internal successors, (340), 4 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:46,141 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 85.0) internal successors, (340), 4 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:46,141 INFO L175 Difference]: Start difference. First operand has 105 places, 75 transitions, 265 flow. Second operand 3 states and 232 transitions. [2022-11-16 12:00:46,141 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 75 transitions, 287 flow [2022-11-16 12:00:46,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 75 transitions, 252 flow, removed 2 selfloop flow, removed 14 redundant places. [2022-11-16 12:00:46,144 INFO L231 Difference]: Finished difference. Result has 90 places, 75 transitions, 238 flow [2022-11-16 12:00:46,144 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=238, PETRI_PLACES=90, PETRI_TRANSITIONS=75} [2022-11-16 12:00:46,145 INFO L288 CegarLoopForPetriNet]: 71 programPoint places, 19 predicate places. [2022-11-16 12:00:46,145 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 75 transitions, 238 flow [2022-11-16 12:00:46,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.0) internal successors, (228), 3 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:46,145 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:00:46,146 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:00:46,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 12:00:46,146 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 12:00:46,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:00:46,146 INFO L85 PathProgramCache]: Analyzing trace with hash 634451854, now seen corresponding path program 1 times [2022-11-16 12:00:46,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:00:46,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398970555] [2022-11-16 12:00:46,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:00:46,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:00:46,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:00:46,591 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 12:00:46,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:00:46,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398970555] [2022-11-16 12:00:46,592 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398970555] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:00:46,592 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:00:46,592 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-16 12:00:46,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563994656] [2022-11-16 12:00:46,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:00:46,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-16 12:00:46,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:00:46,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-16 12:00:46,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-11-16 12:00:46,595 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 85 [2022-11-16 12:00:46,595 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 75 transitions, 238 flow. Second operand has 15 states, 15 states have (on average 38.86666666666667) internal successors, (583), 15 states have internal predecessors, (583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:46,596 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:00:46,596 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 85 [2022-11-16 12:00:46,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:00:47,381 INFO L130 PetriNetUnfolder]: 21/120 cut-off events. [2022-11-16 12:00:47,383 INFO L131 PetriNetUnfolder]: For 46/46 co-relation queries the response was YES. [2022-11-16 12:00:47,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 297 conditions, 120 events. 21/120 cut-off events. For 46/46 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 179 event pairs, 5 based on Foata normal form. 1/120 useless extension candidates. Maximal degree in co-relation 226. Up to 27 conditions per place. [2022-11-16 12:00:47,385 INFO L137 encePairwiseOnDemand]: 66/85 looper letters, 32 selfloop transitions, 30 changer transitions 0/92 dead transitions. [2022-11-16 12:00:47,385 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 92 transitions, 429 flow [2022-11-16 12:00:47,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-16 12:00:47,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2022-11-16 12:00:47,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 988 transitions. [2022-11-16 12:00:47,389 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46494117647058825 [2022-11-16 12:00:47,390 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 988 transitions. [2022-11-16 12:00:47,390 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 988 transitions. [2022-11-16 12:00:47,391 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:00:47,391 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 988 transitions. [2022-11-16 12:00:47,394 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 39.52) internal successors, (988), 25 states have internal predecessors, (988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:47,398 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 85.0) internal successors, (2210), 26 states have internal predecessors, (2210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:47,399 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 85.0) internal successors, (2210), 26 states have internal predecessors, (2210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:47,399 INFO L175 Difference]: Start difference. First operand has 90 places, 75 transitions, 238 flow. Second operand 25 states and 988 transitions. [2022-11-16 12:00:47,399 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 92 transitions, 429 flow [2022-11-16 12:00:47,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 92 transitions, 422 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 12:00:47,406 INFO L231 Difference]: Finished difference. Result has 110 places, 82 transitions, 326 flow [2022-11-16 12:00:47,406 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=326, PETRI_PLACES=110, PETRI_TRANSITIONS=82} [2022-11-16 12:00:47,409 INFO L288 CegarLoopForPetriNet]: 71 programPoint places, 39 predicate places. [2022-11-16 12:00:47,409 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 82 transitions, 326 flow [2022-11-16 12:00:47,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 38.86666666666667) internal successors, (583), 15 states have internal predecessors, (583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:47,411 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:00:47,411 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:00:47,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 12:00:47,411 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 12:00:47,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:00:47,412 INFO L85 PathProgramCache]: Analyzing trace with hash -605312134, now seen corresponding path program 1 times [2022-11-16 12:00:47,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:00:47,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61110886] [2022-11-16 12:00:47,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:00:47,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:00:47,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:00:47,905 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 12:00:47,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:00:47,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61110886] [2022-11-16 12:00:47,906 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61110886] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:00:47,906 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:00:47,906 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-16 12:00:47,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101608282] [2022-11-16 12:00:47,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:00:47,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-16 12:00:47,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:00:47,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-16 12:00:47,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2022-11-16 12:00:47,909 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 85 [2022-11-16 12:00:47,910 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 82 transitions, 326 flow. Second operand has 15 states, 15 states have (on average 38.86666666666667) internal successors, (583), 15 states have internal predecessors, (583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:47,910 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:00:47,910 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 85 [2022-11-16 12:00:47,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:00:48,500 INFO L130 PetriNetUnfolder]: 24/142 cut-off events. [2022-11-16 12:00:48,502 INFO L131 PetriNetUnfolder]: For 87/93 co-relation queries the response was YES. [2022-11-16 12:00:48,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 385 conditions, 142 events. 24/142 cut-off events. For 87/93 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 309 event pairs, 3 based on Foata normal form. 8/148 useless extension candidates. Maximal degree in co-relation 308. Up to 36 conditions per place. [2022-11-16 12:00:48,503 INFO L137 encePairwiseOnDemand]: 65/85 looper letters, 44 selfloop transitions, 28 changer transitions 0/102 dead transitions. [2022-11-16 12:00:48,504 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 102 transitions, 536 flow [2022-11-16 12:00:48,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-16 12:00:48,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-16 12:00:48,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 846 transitions. [2022-11-16 12:00:48,510 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47394957983193275 [2022-11-16 12:00:48,510 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 846 transitions. [2022-11-16 12:00:48,510 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 846 transitions. [2022-11-16 12:00:48,512 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:00:48,512 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 846 transitions. [2022-11-16 12:00:48,515 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 40.285714285714285) internal successors, (846), 21 states have internal predecessors, (846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:48,518 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 85.0) internal successors, (1870), 22 states have internal predecessors, (1870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:48,519 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 85.0) internal successors, (1870), 22 states have internal predecessors, (1870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:48,519 INFO L175 Difference]: Start difference. First operand has 110 places, 82 transitions, 326 flow. Second operand 21 states and 846 transitions. [2022-11-16 12:00:48,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 102 transitions, 536 flow [2022-11-16 12:00:48,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 102 transitions, 457 flow, removed 2 selfloop flow, removed 19 redundant places. [2022-11-16 12:00:48,524 INFO L231 Difference]: Finished difference. Result has 118 places, 89 transitions, 368 flow [2022-11-16 12:00:48,524 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=255, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=368, PETRI_PLACES=118, PETRI_TRANSITIONS=89} [2022-11-16 12:00:48,525 INFO L288 CegarLoopForPetriNet]: 71 programPoint places, 47 predicate places. [2022-11-16 12:00:48,525 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 89 transitions, 368 flow [2022-11-16 12:00:48,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 38.86666666666667) internal successors, (583), 15 states have internal predecessors, (583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:48,526 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:00:48,526 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:00:48,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 12:00:48,527 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 12:00:48,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:00:48,528 INFO L85 PathProgramCache]: Analyzing trace with hash -1551421468, now seen corresponding path program 2 times [2022-11-16 12:00:48,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:00:48,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489451081] [2022-11-16 12:00:48,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:00:48,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:00:48,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:00:48,989 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 12:00:48,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:00:48,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489451081] [2022-11-16 12:00:48,989 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489451081] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:00:48,990 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:00:48,990 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-16 12:00:48,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90987938] [2022-11-16 12:00:48,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:00:48,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-16 12:00:48,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:00:48,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-16 12:00:48,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2022-11-16 12:00:48,992 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 85 [2022-11-16 12:00:48,993 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 89 transitions, 368 flow. Second operand has 15 states, 15 states have (on average 38.86666666666667) internal successors, (583), 15 states have internal predecessors, (583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:48,993 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:00:48,993 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 85 [2022-11-16 12:00:48,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:00:49,824 INFO L130 PetriNetUnfolder]: 33/184 cut-off events. [2022-11-16 12:00:49,824 INFO L131 PetriNetUnfolder]: For 155/161 co-relation queries the response was YES. [2022-11-16 12:00:49,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 542 conditions, 184 events. 33/184 cut-off events. For 155/161 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 551 event pairs, 4 based on Foata normal form. 8/189 useless extension candidates. Maximal degree in co-relation 488. Up to 38 conditions per place. [2022-11-16 12:00:49,826 INFO L137 encePairwiseOnDemand]: 65/85 looper letters, 48 selfloop transitions, 48 changer transitions 0/126 dead transitions. [2022-11-16 12:00:49,826 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 126 transitions, 722 flow [2022-11-16 12:00:49,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-16 12:00:49,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-11-16 12:00:49,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 1196 transitions. [2022-11-16 12:00:49,836 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46901960784313723 [2022-11-16 12:00:49,836 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 1196 transitions. [2022-11-16 12:00:49,836 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 1196 transitions. [2022-11-16 12:00:49,837 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:00:49,837 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 1196 transitions. [2022-11-16 12:00:49,843 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 39.86666666666667) internal successors, (1196), 30 states have internal predecessors, (1196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:49,849 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 85.0) internal successors, (2635), 31 states have internal predecessors, (2635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:49,850 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 85.0) internal successors, (2635), 31 states have internal predecessors, (2635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:49,850 INFO L175 Difference]: Start difference. First operand has 118 places, 89 transitions, 368 flow. Second operand 30 states and 1196 transitions. [2022-11-16 12:00:49,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 126 transitions, 722 flow [2022-11-16 12:00:49,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 126 transitions, 684 flow, removed 2 selfloop flow, removed 11 redundant places. [2022-11-16 12:00:49,855 INFO L231 Difference]: Finished difference. Result has 142 places, 109 transitions, 586 flow [2022-11-16 12:00:49,855 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=334, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=586, PETRI_PLACES=142, PETRI_TRANSITIONS=109} [2022-11-16 12:00:49,858 INFO L288 CegarLoopForPetriNet]: 71 programPoint places, 71 predicate places. [2022-11-16 12:00:49,859 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 109 transitions, 586 flow [2022-11-16 12:00:49,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 38.86666666666667) internal successors, (583), 15 states have internal predecessors, (583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:49,859 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:00:49,860 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:00:49,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 12:00:49,860 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 12:00:49,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:00:49,861 INFO L85 PathProgramCache]: Analyzing trace with hash 1744014112, now seen corresponding path program 3 times [2022-11-16 12:00:49,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:00:49,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986903578] [2022-11-16 12:00:49,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:00:49,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:00:49,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:00:50,300 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 12:00:50,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:00:50,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986903578] [2022-11-16 12:00:50,301 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986903578] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:00:50,301 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:00:50,301 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-16 12:00:50,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703813285] [2022-11-16 12:00:50,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:00:50,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-16 12:00:50,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:00:50,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-16 12:00:50,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2022-11-16 12:00:50,304 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 85 [2022-11-16 12:00:50,305 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 109 transitions, 586 flow. Second operand has 15 states, 15 states have (on average 38.86666666666667) internal successors, (583), 15 states have internal predecessors, (583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:50,305 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:00:50,305 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 85 [2022-11-16 12:00:50,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:00:50,999 INFO L130 PetriNetUnfolder]: 37/203 cut-off events. [2022-11-16 12:00:50,999 INFO L131 PetriNetUnfolder]: For 279/285 co-relation queries the response was YES. [2022-11-16 12:00:51,000 INFO L83 FinitePrefix]: Finished finitePrefix Result has 680 conditions, 203 events. 37/203 cut-off events. For 279/285 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 671 event pairs, 3 based on Foata normal form. 8/207 useless extension candidates. Maximal degree in co-relation 616. Up to 36 conditions per place. [2022-11-16 12:00:51,002 INFO L137 encePairwiseOnDemand]: 65/85 looper letters, 48 selfloop transitions, 51 changer transitions 0/129 dead transitions. [2022-11-16 12:00:51,002 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 129 transitions, 856 flow [2022-11-16 12:00:51,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-16 12:00:51,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2022-11-16 12:00:51,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 1043 transitions. [2022-11-16 12:00:51,005 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47194570135746605 [2022-11-16 12:00:51,005 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 1043 transitions. [2022-11-16 12:00:51,005 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 1043 transitions. [2022-11-16 12:00:51,006 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:00:51,006 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 1043 transitions. [2022-11-16 12:00:51,008 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 40.11538461538461) internal successors, (1043), 26 states have internal predecessors, (1043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:51,012 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 85.0) internal successors, (2295), 27 states have internal predecessors, (2295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:51,014 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 85.0) internal successors, (2295), 27 states have internal predecessors, (2295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:51,014 INFO L175 Difference]: Start difference. First operand has 142 places, 109 transitions, 586 flow. Second operand 26 states and 1043 transitions. [2022-11-16 12:00:51,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 129 transitions, 856 flow [2022-11-16 12:00:51,018 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 129 transitions, 781 flow, removed 20 selfloop flow, removed 12 redundant places. [2022-11-16 12:00:51,021 INFO L231 Difference]: Finished difference. Result has 160 places, 113 transitions, 678 flow [2022-11-16 12:00:51,022 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=518, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=678, PETRI_PLACES=160, PETRI_TRANSITIONS=113} [2022-11-16 12:00:51,023 INFO L288 CegarLoopForPetriNet]: 71 programPoint places, 89 predicate places. [2022-11-16 12:00:51,028 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 113 transitions, 678 flow [2022-11-16 12:00:51,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 38.86666666666667) internal successors, (583), 15 states have internal predecessors, (583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:51,029 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:00:51,029 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:00:51,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-16 12:00:51,030 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 12:00:51,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:00:51,030 INFO L85 PathProgramCache]: Analyzing trace with hash 1209552896, now seen corresponding path program 4 times [2022-11-16 12:00:51,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:00:51,031 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861893438] [2022-11-16 12:00:51,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:00:51,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:00:51,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:00:51,433 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 12:00:51,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:00:51,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861893438] [2022-11-16 12:00:51,433 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861893438] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:00:51,433 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:00:51,433 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-16 12:00:51,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232100452] [2022-11-16 12:00:51,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:00:51,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-16 12:00:51,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:00:51,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-16 12:00:51,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2022-11-16 12:00:51,436 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 85 [2022-11-16 12:00:51,437 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 113 transitions, 678 flow. Second operand has 15 states, 15 states have (on average 38.86666666666667) internal successors, (583), 15 states have internal predecessors, (583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:51,437 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:00:51,437 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 85 [2022-11-16 12:00:51,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:00:52,333 INFO L130 PetriNetUnfolder]: 45/242 cut-off events. [2022-11-16 12:00:52,334 INFO L131 PetriNetUnfolder]: For 518/524 co-relation queries the response was YES. [2022-11-16 12:00:52,335 INFO L83 FinitePrefix]: Finished finitePrefix Result has 860 conditions, 242 events. 45/242 cut-off events. For 518/524 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 949 event pairs, 12 based on Foata normal form. 2/239 useless extension candidates. Maximal degree in co-relation 764. Up to 68 conditions per place. [2022-11-16 12:00:52,336 INFO L137 encePairwiseOnDemand]: 66/85 looper letters, 67 selfloop transitions, 53 changer transitions 0/150 dead transitions. [2022-11-16 12:00:52,336 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 150 transitions, 1108 flow [2022-11-16 12:00:52,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-16 12:00:52,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-11-16 12:00:52,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 1161 transitions. [2022-11-16 12:00:52,340 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47099391480730224 [2022-11-16 12:00:52,340 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 1161 transitions. [2022-11-16 12:00:52,340 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 1161 transitions. [2022-11-16 12:00:52,342 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:00:52,342 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 1161 transitions. [2022-11-16 12:00:52,347 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 40.03448275862069) internal successors, (1161), 29 states have internal predecessors, (1161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:52,351 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 85.0) internal successors, (2550), 30 states have internal predecessors, (2550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:52,352 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 85.0) internal successors, (2550), 30 states have internal predecessors, (2550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:52,353 INFO L175 Difference]: Start difference. First operand has 160 places, 113 transitions, 678 flow. Second operand 29 states and 1161 transitions. [2022-11-16 12:00:52,353 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 150 transitions, 1108 flow [2022-11-16 12:00:52,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 150 transitions, 1008 flow, removed 8 selfloop flow, removed 21 redundant places. [2022-11-16 12:00:52,361 INFO L231 Difference]: Finished difference. Result has 174 places, 133 transitions, 881 flow [2022-11-16 12:00:52,363 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=588, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=881, PETRI_PLACES=174, PETRI_TRANSITIONS=133} [2022-11-16 12:00:52,368 INFO L288 CegarLoopForPetriNet]: 71 programPoint places, 103 predicate places. [2022-11-16 12:00:52,368 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 133 transitions, 881 flow [2022-11-16 12:00:52,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 38.86666666666667) internal successors, (583), 15 states have internal predecessors, (583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:52,371 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:00:52,371 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:00:52,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-16 12:00:52,372 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 12:00:52,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:00:52,372 INFO L85 PathProgramCache]: Analyzing trace with hash 1340627400, now seen corresponding path program 5 times [2022-11-16 12:00:52,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:00:52,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089350441] [2022-11-16 12:00:52,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:00:52,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:00:52,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:00:52,815 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 12:00:52,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:00:52,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089350441] [2022-11-16 12:00:52,816 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089350441] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:00:52,816 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:00:52,816 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-16 12:00:52,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232283910] [2022-11-16 12:00:52,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:00:52,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-16 12:00:52,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:00:52,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-16 12:00:52,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2022-11-16 12:00:52,819 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 85 [2022-11-16 12:00:52,820 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 133 transitions, 881 flow. Second operand has 15 states, 15 states have (on average 38.86666666666667) internal successors, (583), 15 states have internal predecessors, (583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:52,820 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:00:52,820 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 85 [2022-11-16 12:00:52,820 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:00:53,814 INFO L130 PetriNetUnfolder]: 49/261 cut-off events. [2022-11-16 12:00:53,814 INFO L131 PetriNetUnfolder]: For 630/636 co-relation queries the response was YES. [2022-11-16 12:00:53,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 984 conditions, 261 events. 49/261 cut-off events. For 630/636 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1089 event pairs, 9 based on Foata normal form. 8/263 useless extension candidates. Maximal degree in co-relation 905. Up to 66 conditions per place. [2022-11-16 12:00:53,818 INFO L137 encePairwiseOnDemand]: 65/85 looper letters, 65 selfloop transitions, 62 changer transitions 0/157 dead transitions. [2022-11-16 12:00:53,819 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 157 transitions, 1233 flow [2022-11-16 12:00:53,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-16 12:00:53,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-11-16 12:00:53,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 1240 transitions. [2022-11-16 12:00:53,825 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47058823529411764 [2022-11-16 12:00:53,825 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 1240 transitions. [2022-11-16 12:00:53,825 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 1240 transitions. [2022-11-16 12:00:53,826 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:00:53,826 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 1240 transitions. [2022-11-16 12:00:53,829 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 40.0) internal successors, (1240), 31 states have internal predecessors, (1240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:53,836 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 85.0) internal successors, (2720), 32 states have internal predecessors, (2720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:53,837 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 85.0) internal successors, (2720), 32 states have internal predecessors, (2720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:53,837 INFO L175 Difference]: Start difference. First operand has 174 places, 133 transitions, 881 flow. Second operand 31 states and 1240 transitions. [2022-11-16 12:00:53,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 157 transitions, 1233 flow [2022-11-16 12:00:53,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 157 transitions, 1118 flow, removed 20 selfloop flow, removed 13 redundant places. [2022-11-16 12:00:53,848 INFO L231 Difference]: Finished difference. Result has 196 places, 137 transitions, 965 flow [2022-11-16 12:00:53,849 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=767, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=965, PETRI_PLACES=196, PETRI_TRANSITIONS=137} [2022-11-16 12:00:53,850 INFO L288 CegarLoopForPetriNet]: 71 programPoint places, 125 predicate places. [2022-11-16 12:00:53,850 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 137 transitions, 965 flow [2022-11-16 12:00:53,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 38.86666666666667) internal successors, (583), 15 states have internal predecessors, (583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:53,851 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:00:53,851 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:00:53,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-16 12:00:53,854 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 12:00:53,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:00:53,854 INFO L85 PathProgramCache]: Analyzing trace with hash 421430010, now seen corresponding path program 6 times [2022-11-16 12:00:53,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:00:53,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554052926] [2022-11-16 12:00:53,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:00:53,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:00:53,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:00:54,256 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 12:00:54,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:00:54,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554052926] [2022-11-16 12:00:54,256 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554052926] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:00:54,256 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:00:54,256 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-16 12:00:54,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902709328] [2022-11-16 12:00:54,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:00:54,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-16 12:00:54,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:00:54,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-16 12:00:54,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2022-11-16 12:00:54,259 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 85 [2022-11-16 12:00:54,260 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 137 transitions, 965 flow. Second operand has 15 states, 15 states have (on average 38.86666666666667) internal successors, (583), 15 states have internal predecessors, (583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:54,260 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:00:54,260 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 85 [2022-11-16 12:00:54,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:00:55,019 INFO L130 PetriNetUnfolder]: 52/280 cut-off events. [2022-11-16 12:00:55,019 INFO L131 PetriNetUnfolder]: For 872/878 co-relation queries the response was YES. [2022-11-16 12:00:55,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1096 conditions, 280 events. 52/280 cut-off events. For 872/878 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1222 event pairs, 18 based on Foata normal form. 2/276 useless extension candidates. Maximal degree in co-relation 1012. Up to 76 conditions per place. [2022-11-16 12:00:55,022 INFO L137 encePairwiseOnDemand]: 66/85 looper letters, 60 selfloop transitions, 68 changer transitions 0/158 dead transitions. [2022-11-16 12:00:55,022 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 158 transitions, 1348 flow [2022-11-16 12:00:55,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-16 12:00:55,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2022-11-16 12:00:55,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 1001 transitions. [2022-11-16 12:00:55,025 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47105882352941175 [2022-11-16 12:00:55,026 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 1001 transitions. [2022-11-16 12:00:55,026 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 1001 transitions. [2022-11-16 12:00:55,026 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:00:55,027 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 1001 transitions. [2022-11-16 12:00:55,029 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 40.04) internal successors, (1001), 25 states have internal predecessors, (1001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:55,032 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 85.0) internal successors, (2210), 26 states have internal predecessors, (2210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:55,033 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 85.0) internal successors, (2210), 26 states have internal predecessors, (2210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:55,033 INFO L175 Difference]: Start difference. First operand has 196 places, 137 transitions, 965 flow. Second operand 25 states and 1001 transitions. [2022-11-16 12:00:55,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 158 transitions, 1348 flow [2022-11-16 12:00:55,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 158 transitions, 1222 flow, removed 13 selfloop flow, removed 26 redundant places. [2022-11-16 12:00:55,046 INFO L231 Difference]: Finished difference. Result has 199 places, 148 transitions, 1136 flow [2022-11-16 12:00:55,046 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=846, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=1136, PETRI_PLACES=199, PETRI_TRANSITIONS=148} [2022-11-16 12:00:55,047 INFO L288 CegarLoopForPetriNet]: 71 programPoint places, 128 predicate places. [2022-11-16 12:00:55,047 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 148 transitions, 1136 flow [2022-11-16 12:00:55,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 38.86666666666667) internal successors, (583), 15 states have internal predecessors, (583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:55,048 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:00:55,048 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:00:55,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-16 12:00:55,048 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 12:00:55,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:00:55,049 INFO L85 PathProgramCache]: Analyzing trace with hash 560234912, now seen corresponding path program 7 times [2022-11-16 12:00:55,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:00:55,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856519185] [2022-11-16 12:00:55,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:00:55,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:00:55,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:00:55,443 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 12:00:55,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:00:55,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856519185] [2022-11-16 12:00:55,444 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856519185] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:00:55,444 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:00:55,444 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-16 12:00:55,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679242400] [2022-11-16 12:00:55,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:00:55,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-16 12:00:55,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:00:55,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-16 12:00:55,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2022-11-16 12:00:55,446 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 85 [2022-11-16 12:00:55,447 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 148 transitions, 1136 flow. Second operand has 15 states, 15 states have (on average 38.86666666666667) internal successors, (583), 15 states have internal predecessors, (583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:55,447 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:00:55,448 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 85 [2022-11-16 12:00:55,448 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:00:56,592 INFO L130 PetriNetUnfolder]: 58/305 cut-off events. [2022-11-16 12:00:56,593 INFO L131 PetriNetUnfolder]: For 998/1004 co-relation queries the response was YES. [2022-11-16 12:00:56,594 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1256 conditions, 305 events. 58/305 cut-off events. For 998/1004 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1415 event pairs, 3 based on Foata normal form. 8/305 useless extension candidates. Maximal degree in co-relation 1162. Up to 63 conditions per place. [2022-11-16 12:00:56,596 INFO L137 encePairwiseOnDemand]: 65/85 looper letters, 48 selfloop transitions, 95 changer transitions 0/173 dead transitions. [2022-11-16 12:00:56,596 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 173 transitions, 1578 flow [2022-11-16 12:00:56,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-11-16 12:00:56,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-11-16 12:00:56,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 1500 transitions. [2022-11-16 12:00:56,608 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46439628482972134 [2022-11-16 12:00:56,609 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 1500 transitions. [2022-11-16 12:00:56,609 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 1500 transitions. [2022-11-16 12:00:56,611 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:00:56,611 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 1500 transitions. [2022-11-16 12:00:56,618 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 39.473684210526315) internal successors, (1500), 38 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:56,628 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 85.0) internal successors, (3315), 39 states have internal predecessors, (3315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:56,629 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 85.0) internal successors, (3315), 39 states have internal predecessors, (3315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:56,629 INFO L175 Difference]: Start difference. First operand has 199 places, 148 transitions, 1136 flow. Second operand 38 states and 1500 transitions. [2022-11-16 12:00:56,630 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 173 transitions, 1578 flow [2022-11-16 12:00:56,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 173 transitions, 1351 flow, removed 47 selfloop flow, removed 17 redundant places. [2022-11-16 12:00:56,644 INFO L231 Difference]: Finished difference. Result has 226 places, 158 transitions, 1289 flow [2022-11-16 12:00:56,645 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=952, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=1289, PETRI_PLACES=226, PETRI_TRANSITIONS=158} [2022-11-16 12:00:56,646 INFO L288 CegarLoopForPetriNet]: 71 programPoint places, 155 predicate places. [2022-11-16 12:00:56,646 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 158 transitions, 1289 flow [2022-11-16 12:00:56,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 38.86666666666667) internal successors, (583), 15 states have internal predecessors, (583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:56,647 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:00:56,647 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:00:56,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-16 12:00:56,648 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 12:00:56,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:00:56,649 INFO L85 PathProgramCache]: Analyzing trace with hash -1620138212, now seen corresponding path program 8 times [2022-11-16 12:00:56,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:00:56,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375446058] [2022-11-16 12:00:56,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:00:56,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:00:56,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:00:56,996 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 12:00:56,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:00:56,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375446058] [2022-11-16 12:00:56,997 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375446058] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:00:56,997 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:00:56,997 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-16 12:00:56,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660222372] [2022-11-16 12:00:56,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:00:56,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-16 12:00:56,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:00:56,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-16 12:00:56,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2022-11-16 12:00:56,999 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 85 [2022-11-16 12:00:57,000 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 158 transitions, 1289 flow. Second operand has 15 states, 15 states have (on average 38.86666666666667) internal successors, (583), 15 states have internal predecessors, (583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:57,000 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:00:57,000 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 85 [2022-11-16 12:00:57,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:00:57,857 INFO L130 PetriNetUnfolder]: 57/302 cut-off events. [2022-11-16 12:00:57,857 INFO L131 PetriNetUnfolder]: For 1137/1143 co-relation queries the response was YES. [2022-11-16 12:00:57,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1281 conditions, 302 events. 57/302 cut-off events. For 1137/1143 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1394 event pairs, 0 based on Foata normal form. 8/303 useless extension candidates. Maximal degree in co-relation 1200. Up to 72 conditions per place. [2022-11-16 12:00:57,860 INFO L137 encePairwiseOnDemand]: 66/85 looper letters, 36 selfloop transitions, 100 changer transitions 0/166 dead transitions. [2022-11-16 12:00:57,861 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 166 transitions, 1570 flow [2022-11-16 12:00:57,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-16 12:00:57,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-11-16 12:00:57,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 1217 transitions. [2022-11-16 12:00:57,864 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4618595825426945 [2022-11-16 12:00:57,864 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 1217 transitions. [2022-11-16 12:00:57,864 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 1217 transitions. [2022-11-16 12:00:57,865 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:00:57,865 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 1217 transitions. [2022-11-16 12:00:57,868 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 39.25806451612903) internal successors, (1217), 31 states have internal predecessors, (1217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:57,871 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 85.0) internal successors, (2720), 32 states have internal predecessors, (2720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:57,872 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 85.0) internal successors, (2720), 32 states have internal predecessors, (2720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:57,873 INFO L175 Difference]: Start difference. First operand has 226 places, 158 transitions, 1289 flow. Second operand 31 states and 1217 transitions. [2022-11-16 12:00:57,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 166 transitions, 1570 flow [2022-11-16 12:00:57,884 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 166 transitions, 1374 flow, removed 15 selfloop flow, removed 31 redundant places. [2022-11-16 12:00:57,887 INFO L231 Difference]: Finished difference. Result has 223 places, 157 transitions, 1280 flow [2022-11-16 12:00:57,888 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=1080, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=1280, PETRI_PLACES=223, PETRI_TRANSITIONS=157} [2022-11-16 12:00:57,888 INFO L288 CegarLoopForPetriNet]: 71 programPoint places, 152 predicate places. [2022-11-16 12:00:57,888 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 157 transitions, 1280 flow [2022-11-16 12:00:57,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 38.86666666666667) internal successors, (583), 15 states have internal predecessors, (583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:57,889 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:00:57,889 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:00:57,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-16 12:00:57,890 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 12:00:57,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:00:57,890 INFO L85 PathProgramCache]: Analyzing trace with hash -1869797030, now seen corresponding path program 1 times [2022-11-16 12:00:57,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:00:57,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549452274] [2022-11-16 12:00:57,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:00:57,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:00:57,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:00:58,083 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 12:00:58,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:00:58,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549452274] [2022-11-16 12:00:58,084 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549452274] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:00:58,085 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:00:58,085 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-16 12:00:58,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141632542] [2022-11-16 12:00:58,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:00:58,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 12:00:58,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:00:58,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 12:00:58,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:00:58,087 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 85 [2022-11-16 12:00:58,088 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 157 transitions, 1280 flow. Second operand has 9 states, 9 states have (on average 51.55555555555556) internal successors, (464), 9 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:58,088 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:00:58,088 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 85 [2022-11-16 12:00:58,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:00:58,371 INFO L130 PetriNetUnfolder]: 62/347 cut-off events. [2022-11-16 12:00:58,372 INFO L131 PetriNetUnfolder]: For 1574/1580 co-relation queries the response was YES. [2022-11-16 12:00:58,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1515 conditions, 347 events. 62/347 cut-off events. For 1574/1580 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1815 event pairs, 28 based on Foata normal form. 14/350 useless extension candidates. Maximal degree in co-relation 1435. Up to 150 conditions per place. [2022-11-16 12:00:58,376 INFO L137 encePairwiseOnDemand]: 76/85 looper letters, 74 selfloop transitions, 23 changer transitions 37/181 dead transitions. [2022-11-16 12:00:58,376 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 181 transitions, 1768 flow [2022-11-16 12:00:58,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 12:00:58,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-16 12:00:58,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 542 transitions. [2022-11-16 12:00:58,378 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6376470588235295 [2022-11-16 12:00:58,378 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 542 transitions. [2022-11-16 12:00:58,378 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 542 transitions. [2022-11-16 12:00:58,379 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:00:58,379 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 542 transitions. [2022-11-16 12:00:58,380 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 54.2) internal successors, (542), 10 states have internal predecessors, (542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:58,382 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 85.0) internal successors, (935), 11 states have internal predecessors, (935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:58,392 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 85.0) internal successors, (935), 11 states have internal predecessors, (935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:58,400 INFO L175 Difference]: Start difference. First operand has 223 places, 157 transitions, 1280 flow. Second operand 10 states and 542 transitions. [2022-11-16 12:00:58,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 181 transitions, 1768 flow [2022-11-16 12:00:58,412 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 181 transitions, 1490 flow, removed 7 selfloop flow, removed 32 redundant places. [2022-11-16 12:00:58,417 INFO L231 Difference]: Finished difference. Result has 206 places, 139 transitions, 942 flow [2022-11-16 12:00:58,417 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=1023, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=942, PETRI_PLACES=206, PETRI_TRANSITIONS=139} [2022-11-16 12:00:58,418 INFO L288 CegarLoopForPetriNet]: 71 programPoint places, 135 predicate places. [2022-11-16 12:00:58,418 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 139 transitions, 942 flow [2022-11-16 12:00:58,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 51.55555555555556) internal successors, (464), 9 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:58,419 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:00:58,420 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:00:58,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-16 12:00:58,420 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 12:00:58,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:00:58,421 INFO L85 PathProgramCache]: Analyzing trace with hash -1437268103, now seen corresponding path program 1 times [2022-11-16 12:00:58,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:00:58,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662078791] [2022-11-16 12:00:58,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:00:58,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:00:58,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:00:58,602 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 12:00:58,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:00:58,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662078791] [2022-11-16 12:00:58,605 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662078791] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:00:58,605 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:00:58,605 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-16 12:00:58,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405390207] [2022-11-16 12:00:58,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:00:58,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 12:00:58,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:00:58,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 12:00:58,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:00:58,609 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 85 [2022-11-16 12:00:58,609 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 139 transitions, 942 flow. Second operand has 9 states, 9 states have (on average 51.55555555555556) internal successors, (464), 9 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:58,609 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:00:58,610 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 85 [2022-11-16 12:00:58,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:00:58,838 INFO L130 PetriNetUnfolder]: 48/261 cut-off events. [2022-11-16 12:00:58,838 INFO L131 PetriNetUnfolder]: For 1004/1008 co-relation queries the response was YES. [2022-11-16 12:00:58,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1042 conditions, 261 events. 48/261 cut-off events. For 1004/1008 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1096 event pairs, 24 based on Foata normal form. 5/260 useless extension candidates. Maximal degree in co-relation 1001. Up to 140 conditions per place. [2022-11-16 12:00:58,841 INFO L137 encePairwiseOnDemand]: 76/85 looper letters, 75 selfloop transitions, 22 changer transitions 15/144 dead transitions. [2022-11-16 12:00:58,842 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 144 transitions, 1171 flow [2022-11-16 12:00:58,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 12:00:58,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-16 12:00:58,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 535 transitions. [2022-11-16 12:00:58,843 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6294117647058823 [2022-11-16 12:00:58,844 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 535 transitions. [2022-11-16 12:00:58,844 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 535 transitions. [2022-11-16 12:00:58,844 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:00:58,844 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 535 transitions. [2022-11-16 12:00:58,846 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 53.5) internal successors, (535), 10 states have internal predecessors, (535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:58,847 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 85.0) internal successors, (935), 11 states have internal predecessors, (935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:58,847 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 85.0) internal successors, (935), 11 states have internal predecessors, (935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:58,847 INFO L175 Difference]: Start difference. First operand has 206 places, 139 transitions, 942 flow. Second operand 10 states and 535 transitions. [2022-11-16 12:00:58,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 144 transitions, 1171 flow [2022-11-16 12:00:58,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 144 transitions, 1052 flow, removed 15 selfloop flow, removed 15 redundant places. [2022-11-16 12:00:58,857 INFO L231 Difference]: Finished difference. Result has 179 places, 125 transitions, 813 flow [2022-11-16 12:00:58,858 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=820, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=813, PETRI_PLACES=179, PETRI_TRANSITIONS=125} [2022-11-16 12:00:58,858 INFO L288 CegarLoopForPetriNet]: 71 programPoint places, 108 predicate places. [2022-11-16 12:00:58,858 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 125 transitions, 813 flow [2022-11-16 12:00:58,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 51.55555555555556) internal successors, (464), 9 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:58,859 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:00:58,859 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:00:58,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-16 12:00:58,860 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 12:00:58,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:00:58,860 INFO L85 PathProgramCache]: Analyzing trace with hash -849425040, now seen corresponding path program 2 times [2022-11-16 12:00:58,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:00:58,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164841484] [2022-11-16 12:00:58,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:00:58,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:00:58,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:00:59,028 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 12:00:59,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:00:59,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164841484] [2022-11-16 12:00:59,028 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164841484] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:00:59,028 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:00:59,029 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-16 12:00:59,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470992331] [2022-11-16 12:00:59,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:00:59,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 12:00:59,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:00:59,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 12:00:59,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:00:59,031 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 85 [2022-11-16 12:00:59,032 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 125 transitions, 813 flow. Second operand has 9 states, 9 states have (on average 51.55555555555556) internal successors, (464), 9 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:59,032 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:00:59,032 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 85 [2022-11-16 12:00:59,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:00:59,262 INFO L130 PetriNetUnfolder]: 51/262 cut-off events. [2022-11-16 12:00:59,263 INFO L131 PetriNetUnfolder]: For 853/855 co-relation queries the response was YES. [2022-11-16 12:00:59,264 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1021 conditions, 262 events. 51/262 cut-off events. For 853/855 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1105 event pairs, 23 based on Foata normal form. 8/263 useless extension candidates. Maximal degree in co-relation 988. Up to 119 conditions per place. [2022-11-16 12:00:59,265 INFO L137 encePairwiseOnDemand]: 76/85 looper letters, 57 selfloop transitions, 20 changer transitions 25/144 dead transitions. [2022-11-16 12:00:59,266 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 144 transitions, 1150 flow [2022-11-16 12:00:59,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 12:00:59,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-16 12:00:59,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 534 transitions. [2022-11-16 12:00:59,268 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6282352941176471 [2022-11-16 12:00:59,268 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 534 transitions. [2022-11-16 12:00:59,268 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 534 transitions. [2022-11-16 12:00:59,268 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:00:59,268 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 534 transitions. [2022-11-16 12:00:59,270 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 53.4) internal successors, (534), 10 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:59,271 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 85.0) internal successors, (935), 11 states have internal predecessors, (935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:59,271 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 85.0) internal successors, (935), 11 states have internal predecessors, (935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:59,272 INFO L175 Difference]: Start difference. First operand has 179 places, 125 transitions, 813 flow. Second operand 10 states and 534 transitions. [2022-11-16 12:00:59,272 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 144 transitions, 1150 flow [2022-11-16 12:00:59,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 144 transitions, 1063 flow, removed 2 selfloop flow, removed 8 redundant places. [2022-11-16 12:00:59,281 INFO L231 Difference]: Finished difference. Result has 170 places, 116 transitions, 750 flow [2022-11-16 12:00:59,282 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=740, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=750, PETRI_PLACES=170, PETRI_TRANSITIONS=116} [2022-11-16 12:00:59,282 INFO L288 CegarLoopForPetriNet]: 71 programPoint places, 99 predicate places. [2022-11-16 12:00:59,282 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 116 transitions, 750 flow [2022-11-16 12:00:59,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 51.55555555555556) internal successors, (464), 9 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:59,283 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:00:59,283 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:00:59,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-16 12:00:59,283 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 12:00:59,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:00:59,284 INFO L85 PathProgramCache]: Analyzing trace with hash -1081082712, now seen corresponding path program 3 times [2022-11-16 12:00:59,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:00:59,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100407156] [2022-11-16 12:00:59,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:00:59,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:00:59,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:00:59,461 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 12:00:59,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:00:59,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100407156] [2022-11-16 12:00:59,462 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100407156] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:00:59,462 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:00:59,462 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-16 12:00:59,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082075175] [2022-11-16 12:00:59,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:00:59,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 12:00:59,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:00:59,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 12:00:59,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:00:59,465 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 85 [2022-11-16 12:00:59,466 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 116 transitions, 750 flow. Second operand has 9 states, 9 states have (on average 51.55555555555556) internal successors, (464), 9 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:59,466 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:00:59,466 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 85 [2022-11-16 12:00:59,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:00:59,710 INFO L130 PetriNetUnfolder]: 41/216 cut-off events. [2022-11-16 12:00:59,710 INFO L131 PetriNetUnfolder]: For 684/686 co-relation queries the response was YES. [2022-11-16 12:00:59,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 866 conditions, 216 events. 41/216 cut-off events. For 684/686 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 790 event pairs, 12 based on Foata normal form. 8/219 useless extension candidates. Maximal degree in co-relation 828. Up to 75 conditions per place. [2022-11-16 12:00:59,712 INFO L137 encePairwiseOnDemand]: 76/85 looper letters, 42 selfloop transitions, 5 changer transitions 42/127 dead transitions. [2022-11-16 12:00:59,713 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 127 transitions, 993 flow [2022-11-16 12:00:59,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 12:00:59,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-16 12:00:59,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 583 transitions. [2022-11-16 12:00:59,715 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6235294117647059 [2022-11-16 12:00:59,715 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 583 transitions. [2022-11-16 12:00:59,715 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 583 transitions. [2022-11-16 12:00:59,715 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:00:59,715 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 583 transitions. [2022-11-16 12:00:59,717 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 53.0) internal successors, (583), 11 states have internal predecessors, (583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:59,718 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 85.0) internal successors, (1020), 12 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:59,718 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 85.0) internal successors, (1020), 12 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:59,719 INFO L175 Difference]: Start difference. First operand has 170 places, 116 transitions, 750 flow. Second operand 11 states and 583 transitions. [2022-11-16 12:00:59,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 127 transitions, 993 flow [2022-11-16 12:00:59,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 127 transitions, 901 flow, removed 9 selfloop flow, removed 14 redundant places. [2022-11-16 12:00:59,727 INFO L231 Difference]: Finished difference. Result has 155 places, 84 transitions, 415 flow [2022-11-16 12:00:59,727 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=664, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=415, PETRI_PLACES=155, PETRI_TRANSITIONS=84} [2022-11-16 12:00:59,728 INFO L288 CegarLoopForPetriNet]: 71 programPoint places, 84 predicate places. [2022-11-16 12:00:59,728 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 84 transitions, 415 flow [2022-11-16 12:00:59,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 51.55555555555556) internal successors, (464), 9 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:59,728 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:00:59,728 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:00:59,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-16 12:00:59,729 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 12:00:59,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:00:59,729 INFO L85 PathProgramCache]: Analyzing trace with hash 179428634, now seen corresponding path program 4 times [2022-11-16 12:00:59,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:00:59,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842042946] [2022-11-16 12:00:59,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:00:59,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:00:59,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:00:59,901 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 12:00:59,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:00:59,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842042946] [2022-11-16 12:00:59,902 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842042946] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:00:59,902 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:00:59,902 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-16 12:00:59,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484198541] [2022-11-16 12:00:59,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:00:59,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 12:00:59,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:00:59,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 12:00:59,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:00:59,905 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 85 [2022-11-16 12:00:59,905 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 84 transitions, 415 flow. Second operand has 9 states, 9 states have (on average 51.55555555555556) internal successors, (464), 9 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:59,906 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:00:59,906 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 85 [2022-11-16 12:00:59,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:01:00,116 INFO L130 PetriNetUnfolder]: 22/130 cut-off events. [2022-11-16 12:01:00,117 INFO L131 PetriNetUnfolder]: For 231/231 co-relation queries the response was YES. [2022-11-16 12:01:00,117 INFO L83 FinitePrefix]: Finished finitePrefix Result has 449 conditions, 130 events. 22/130 cut-off events. For 231/231 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 266 event pairs, 10 based on Foata normal form. 2/129 useless extension candidates. Maximal degree in co-relation 416. Up to 50 conditions per place. [2022-11-16 12:01:00,118 INFO L137 encePairwiseOnDemand]: 76/85 looper letters, 26 selfloop transitions, 14 changer transitions 12/89 dead transitions. [2022-11-16 12:01:00,118 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 89 transitions, 539 flow [2022-11-16 12:01:00,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 12:01:00,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-16 12:01:00,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 528 transitions. [2022-11-16 12:01:00,120 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6211764705882353 [2022-11-16 12:01:00,120 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 528 transitions. [2022-11-16 12:01:00,121 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 528 transitions. [2022-11-16 12:01:00,121 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:01:00,121 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 528 transitions. [2022-11-16 12:01:00,122 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 52.8) internal successors, (528), 10 states have internal predecessors, (528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:01:00,124 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 85.0) internal successors, (935), 11 states have internal predecessors, (935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:01:00,124 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 85.0) internal successors, (935), 11 states have internal predecessors, (935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:01:00,124 INFO L175 Difference]: Start difference. First operand has 155 places, 84 transitions, 415 flow. Second operand 10 states and 528 transitions. [2022-11-16 12:01:00,124 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 89 transitions, 539 flow [2022-11-16 12:01:00,127 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 89 transitions, 443 flow, removed 18 selfloop flow, removed 22 redundant places. [2022-11-16 12:01:00,128 INFO L231 Difference]: Finished difference. Result has 113 places, 77 transitions, 312 flow [2022-11-16 12:01:00,129 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=325, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=312, PETRI_PLACES=113, PETRI_TRANSITIONS=77} [2022-11-16 12:01:00,129 INFO L288 CegarLoopForPetriNet]: 71 programPoint places, 42 predicate places. [2022-11-16 12:01:00,130 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 77 transitions, 312 flow [2022-11-16 12:01:00,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 51.55555555555556) internal successors, (464), 9 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:01:00,130 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:01:00,130 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:01:00,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-16 12:01:00,131 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 12:01:00,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:01:00,131 INFO L85 PathProgramCache]: Analyzing trace with hash -1321658234, now seen corresponding path program 5 times [2022-11-16 12:01:00,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:01:00,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120429305] [2022-11-16 12:01:00,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:01:00,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:01:00,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:01:00,306 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 12:01:00,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:01:00,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120429305] [2022-11-16 12:01:00,307 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120429305] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:01:00,307 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:01:00,307 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-16 12:01:00,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144530204] [2022-11-16 12:01:00,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:01:00,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 12:01:00,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:01:00,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 12:01:00,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:01:00,309 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 85 [2022-11-16 12:01:00,310 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 77 transitions, 312 flow. Second operand has 9 states, 9 states have (on average 51.55555555555556) internal successors, (464), 9 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:01:00,310 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:01:00,310 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 85 [2022-11-16 12:01:00,311 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:01:00,516 INFO L130 PetriNetUnfolder]: 16/104 cut-off events. [2022-11-16 12:01:00,516 INFO L131 PetriNetUnfolder]: For 57/57 co-relation queries the response was YES. [2022-11-16 12:01:00,516 INFO L83 FinitePrefix]: Finished finitePrefix Result has 301 conditions, 104 events. 16/104 cut-off events. For 57/57 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 153 event pairs, 6 based on Foata normal form. 2/104 useless extension candidates. Maximal degree in co-relation 283. Up to 26 conditions per place. [2022-11-16 12:01:00,517 INFO L137 encePairwiseOnDemand]: 76/85 looper letters, 23 selfloop transitions, 7 changer transitions 16/81 dead transitions. [2022-11-16 12:01:00,517 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 81 transitions, 408 flow [2022-11-16 12:01:00,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 12:01:00,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-16 12:01:00,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 579 transitions. [2022-11-16 12:01:00,522 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6192513368983957 [2022-11-16 12:01:00,523 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 579 transitions. [2022-11-16 12:01:00,523 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 579 transitions. [2022-11-16 12:01:00,523 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:01:00,523 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 579 transitions. [2022-11-16 12:01:00,524 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 52.63636363636363) internal successors, (579), 11 states have internal predecessors, (579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:01:00,526 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 85.0) internal successors, (1020), 12 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:01:00,526 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 85.0) internal successors, (1020), 12 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:01:00,526 INFO L175 Difference]: Start difference. First operand has 113 places, 77 transitions, 312 flow. Second operand 11 states and 579 transitions. [2022-11-16 12:01:00,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 81 transitions, 408 flow [2022-11-16 12:01:00,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 81 transitions, 355 flow, removed 4 selfloop flow, removed 10 redundant places. [2022-11-16 12:01:00,529 INFO L231 Difference]: Finished difference. Result has 104 places, 65 transitions, 203 flow [2022-11-16 12:01:00,530 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=259, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=203, PETRI_PLACES=104, PETRI_TRANSITIONS=65} [2022-11-16 12:01:00,530 INFO L288 CegarLoopForPetriNet]: 71 programPoint places, 33 predicate places. [2022-11-16 12:01:00,530 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 65 transitions, 203 flow [2022-11-16 12:01:00,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 51.55555555555556) internal successors, (464), 9 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:01:00,531 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:01:00,531 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:01:00,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-16 12:01:00,531 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 12:01:00,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:01:00,532 INFO L85 PathProgramCache]: Analyzing trace with hash -1002112392, now seen corresponding path program 6 times [2022-11-16 12:01:00,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:01:00,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12357644] [2022-11-16 12:01:00,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:01:00,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:01:00,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:01:00,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:01:00,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:01:00,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12357644] [2022-11-16 12:01:00,696 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12357644] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:01:00,696 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:01:00,696 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-16 12:01:00,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310358725] [2022-11-16 12:01:00,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:01:00,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 12:01:00,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:01:00,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 12:01:00,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:01:00,699 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 85 [2022-11-16 12:01:00,700 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 65 transitions, 203 flow. Second operand has 9 states, 9 states have (on average 51.55555555555556) internal successors, (464), 9 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:01:00,700 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:01:00,700 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 85 [2022-11-16 12:01:00,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:01:00,917 INFO L130 PetriNetUnfolder]: 9/77 cut-off events. [2022-11-16 12:01:00,917 INFO L131 PetriNetUnfolder]: For 22/22 co-relation queries the response was YES. [2022-11-16 12:01:00,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 183 conditions, 77 events. 9/77 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 46 event pairs, 0 based on Foata normal form. 2/79 useless extension candidates. Maximal degree in co-relation 169. Up to 11 conditions per place. [2022-11-16 12:01:00,921 INFO L137 encePairwiseOnDemand]: 76/85 looper letters, 0 selfloop transitions, 0 changer transitions 68/68 dead transitions. [2022-11-16 12:01:00,921 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 68 transitions, 273 flow [2022-11-16 12:01:00,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-16 12:01:00,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-16 12:01:00,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 620 transitions. [2022-11-16 12:01:00,924 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6078431372549019 [2022-11-16 12:01:00,925 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 620 transitions. [2022-11-16 12:01:00,925 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 620 transitions. [2022-11-16 12:01:00,926 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:01:00,926 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 620 transitions. [2022-11-16 12:01:00,927 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 51.666666666666664) internal successors, (620), 12 states have internal predecessors, (620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:01:00,929 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 85.0) internal successors, (1105), 13 states have internal predecessors, (1105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:01:00,929 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 85.0) internal successors, (1105), 13 states have internal predecessors, (1105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:01:00,929 INFO L175 Difference]: Start difference. First operand has 104 places, 65 transitions, 203 flow. Second operand 12 states and 620 transitions. [2022-11-16 12:01:00,930 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 68 transitions, 273 flow [2022-11-16 12:01:00,931 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 68 transitions, 223 flow, removed 5 selfloop flow, removed 15 redundant places. [2022-11-16 12:01:00,931 INFO L231 Difference]: Finished difference. Result has 84 places, 0 transitions, 0 flow [2022-11-16 12:01:00,931 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=149, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=0, PETRI_PLACES=84, PETRI_TRANSITIONS=0} [2022-11-16 12:01:00,932 INFO L288 CegarLoopForPetriNet]: 71 programPoint places, 13 predicate places. [2022-11-16 12:01:00,932 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 0 transitions, 0 flow [2022-11-16 12:01:00,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 51.55555555555556) internal successors, (464), 9 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:01:00,936 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 7 remaining) [2022-11-16 12:01:00,936 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 7 remaining) [2022-11-16 12:01:00,937 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 7 remaining) [2022-11-16 12:01:00,937 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 7 remaining) [2022-11-16 12:01:00,937 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 7 remaining) [2022-11-16 12:01:00,937 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 7 remaining) [2022-11-16 12:01:00,937 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 7 remaining) [2022-11-16 12:01:00,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-16 12:01:00,938 INFO L444 BasicCegarLoop]: Path program histogram: [8, 6, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:01:00,945 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-16 12:01:00,945 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-16 12:01:00,950 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 12:01:00 BasicIcfg [2022-11-16 12:01:00,950 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-16 12:01:00,951 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-16 12:01:00,951 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-16 12:01:00,951 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-16 12:01:00,952 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:00:42" (3/4) ... [2022-11-16 12:01:00,954 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-16 12:01:00,961 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2022-11-16 12:01:00,966 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2022-11-16 12:01:00,967 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-16 12:01:00,967 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-16 12:01:01,004 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a179ecfb-bb62-400d-97da-7f56ea0f7cb6/bin/uautomizer-tPACEb0tL8/witness.graphml [2022-11-16 12:01:01,005 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-16 12:01:01,006 INFO L158 Benchmark]: Toolchain (without parser) took 20342.98ms. Allocated memory was 125.8MB in the beginning and 262.1MB in the end (delta: 136.3MB). Free memory was 84.2MB in the beginning and 85.2MB in the end (delta: -1.0MB). Peak memory consumption was 135.1MB. Max. memory is 16.1GB. [2022-11-16 12:01:01,006 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 125.8MB. Free memory is still 102.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 12:01:01,006 INFO L158 Benchmark]: CACSL2BoogieTranslator took 755.78ms. Allocated memory is still 125.8MB. Free memory was 83.9MB in the beginning and 83.7MB in the end (delta: 246.9kB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-16 12:01:01,006 INFO L158 Benchmark]: Boogie Procedure Inliner took 75.76ms. Allocated memory is still 125.8MB. Free memory was 83.1MB in the beginning and 81.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 12:01:01,007 INFO L158 Benchmark]: Boogie Preprocessor took 56.08ms. Allocated memory is still 125.8MB. Free memory was 81.0MB in the beginning and 79.5MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 12:01:01,007 INFO L158 Benchmark]: RCFGBuilder took 610.85ms. Allocated memory is still 125.8MB. Free memory was 79.5MB in the beginning and 65.9MB in the end (delta: 13.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-16 12:01:01,008 INFO L158 Benchmark]: TraceAbstraction took 18783.96ms. Allocated memory was 125.8MB in the beginning and 262.1MB in the end (delta: 136.3MB). Free memory was 64.8MB in the beginning and 87.3MB in the end (delta: -22.5MB). Peak memory consumption was 116.0MB. Max. memory is 16.1GB. [2022-11-16 12:01:01,008 INFO L158 Benchmark]: Witness Printer took 53.78ms. Allocated memory is still 262.1MB. Free memory was 87.3MB in the beginning and 85.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 12:01:01,012 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 125.8MB. Free memory is still 102.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 755.78ms. Allocated memory is still 125.8MB. Free memory was 83.9MB in the beginning and 83.7MB in the end (delta: 246.9kB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 75.76ms. Allocated memory is still 125.8MB. Free memory was 83.1MB in the beginning and 81.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 56.08ms. Allocated memory is still 125.8MB. Free memory was 81.0MB in the beginning and 79.5MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 610.85ms. Allocated memory is still 125.8MB. Free memory was 79.5MB in the beginning and 65.9MB in the end (delta: 13.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 18783.96ms. Allocated memory was 125.8MB in the beginning and 262.1MB in the end (delta: 136.3MB). Free memory was 64.8MB in the beginning and 87.3MB in the end (delta: -22.5MB). Peak memory consumption was 116.0MB. Max. memory is 16.1GB. * Witness Printer took 53.78ms. Allocated memory is still 262.1MB. Free memory was 87.3MB in the beginning and 85.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 936]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 936]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 924]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 924]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 103 locations, 7 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 18.7s, OverallIterations: 21, TraceHistogramMax: 1, PathProgramHistogramMax: 8, EmptinessCheckTime: 0.0s, AutomataDifference: 11.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2136 SdHoareTripleChecker+Valid, 3.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2136 mSDsluCounter, 2940 SdHoareTripleChecker+Invalid, 2.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2506 mSDsCounter, 77 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4425 IncrementalHoareTripleChecker+Invalid, 4502 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 77 mSolverCounterUnsat, 434 mSDtfsCounter, 4425 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 557 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 524 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3228 ImplicationChecksByTransitivity, 7.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1289occurred in iteration=13, InterpolantAutomatonStates: 389, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 6.5s InterpolantComputationTime, 1113 NumberOfCodeBlocks, 1113 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 1092 ConstructedInterpolants, 0 QuantifiedInterpolants, 4766 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 21 InterpolantComputations, 21 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-16 12:01:01,047 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a179ecfb-bb62-400d-97da-7f56ea0f7cb6/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE