./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_08-cond_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_803911e8-fee0-4c39-96d0-ba260a939a57/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_803911e8-fee0-4c39-96d0-ba260a939a57/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_803911e8-fee0-4c39-96d0-ba260a939a57/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_803911e8-fee0-4c39-96d0-ba260a939a57/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_08-cond_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_803911e8-fee0-4c39-96d0-ba260a939a57/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_803911e8-fee0-4c39-96d0-ba260a939a57/bin/uautomizer-TMbwUNV5ro --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 b4439281d7e12bca3fd2bd39ebda4196e341f38fedf1c370a96bdabb4944cfe7 --- 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-8393723 [2022-11-18 20:23:36,996 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 20:23:36,999 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 20:23:37,032 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 20:23:37,033 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 20:23:37,035 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 20:23:37,036 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 20:23:37,038 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 20:23:37,040 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 20:23:37,041 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 20:23:37,043 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 20:23:37,044 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 20:23:37,044 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 20:23:37,046 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 20:23:37,047 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 20:23:37,048 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 20:23:37,049 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 20:23:37,050 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 20:23:37,052 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 20:23:37,059 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 20:23:37,061 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 20:23:37,064 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 20:23:37,066 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 20:23:37,069 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 20:23:37,074 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 20:23:37,080 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 20:23:37,080 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 20:23:37,081 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 20:23:37,083 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 20:23:37,084 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 20:23:37,085 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 20:23:37,087 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 20:23:37,089 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 20:23:37,090 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 20:23:37,093 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 20:23:37,093 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 20:23:37,094 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 20:23:37,095 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 20:23:37,095 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 20:23:37,096 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 20:23:37,097 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 20:23:37,098 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_803911e8-fee0-4c39-96d0-ba260a939a57/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-18 20:23:37,140 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 20:23:37,140 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 20:23:37,140 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 20:23:37,141 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 20:23:37,141 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 20:23:37,142 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 20:23:37,142 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 20:23:37,142 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 20:23:37,143 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 20:23:37,143 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 20:23:37,143 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 20:23:37,143 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 20:23:37,144 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 20:23:37,144 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 20:23:37,144 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 20:23:37,144 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 20:23:37,144 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 20:23:37,145 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 20:23:37,145 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-18 20:23:37,145 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 20:23:37,145 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 20:23:37,146 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 20:23:37,146 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 20:23:37,146 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 20:23:37,146 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 20:23:37,146 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 20:23:37,147 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:23:37,147 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 20:23:37,147 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 20:23:37,147 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 20:23:37,148 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 20:23:37,148 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 20:23:37,148 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 20:23:37,148 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 20:23:37,148 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 20:23:37,149 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_803911e8-fee0-4c39-96d0-ba260a939a57/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_803911e8-fee0-4c39-96d0-ba260a939a57/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b4439281d7e12bca3fd2bd39ebda4196e341f38fedf1c370a96bdabb4944cfe7 [2022-11-18 20:23:37,462 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 20:23:37,488 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 20:23:37,496 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 20:23:37,498 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 20:23:37,499 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 20:23:37,501 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_803911e8-fee0-4c39-96d0-ba260a939a57/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/goblint-regression/28-race_reach_08-cond_racefree.i [2022-11-18 20:23:37,602 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_803911e8-fee0-4c39-96d0-ba260a939a57/bin/uautomizer-TMbwUNV5ro/data/dbe7cd92a/49c9c2156fb74aa69ceb6df3133bfb47/FLAGedadcaa7f [2022-11-18 20:23:38,207 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 20:23:38,208 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_803911e8-fee0-4c39-96d0-ba260a939a57/sv-benchmarks/c/goblint-regression/28-race_reach_08-cond_racefree.i [2022-11-18 20:23:38,226 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_803911e8-fee0-4c39-96d0-ba260a939a57/bin/uautomizer-TMbwUNV5ro/data/dbe7cd92a/49c9c2156fb74aa69ceb6df3133bfb47/FLAGedadcaa7f [2022-11-18 20:23:38,480 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_803911e8-fee0-4c39-96d0-ba260a939a57/bin/uautomizer-TMbwUNV5ro/data/dbe7cd92a/49c9c2156fb74aa69ceb6df3133bfb47 [2022-11-18 20:23:38,484 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 20:23:38,487 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 20:23:38,489 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 20:23:38,489 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 20:23:38,493 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 20:23:38,493 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:23:38" (1/1) ... [2022-11-18 20:23:38,494 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15721ca9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:23:38, skipping insertion in model container [2022-11-18 20:23:38,495 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:23:38" (1/1) ... [2022-11-18 20:23:38,501 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 20:23:38,548 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 20:23:39,118 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_803911e8-fee0-4c39-96d0-ba260a939a57/sv-benchmarks/c/goblint-regression/28-race_reach_08-cond_racefree.i[41322,41335] [2022-11-18 20:23:39,152 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:23:39,174 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 20:23:39,234 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_803911e8-fee0-4c39-96d0-ba260a939a57/sv-benchmarks/c/goblint-regression/28-race_reach_08-cond_racefree.i[41322,41335] [2022-11-18 20:23:39,247 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:23:39,332 INFO L208 MainTranslator]: Completed translation [2022-11-18 20:23:39,333 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:23:39 WrapperNode [2022-11-18 20:23:39,333 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 20:23:39,334 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 20:23:39,334 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 20:23:39,335 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 20:23:39,343 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:23:39" (1/1) ... [2022-11-18 20:23:39,372 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:23:39" (1/1) ... [2022-11-18 20:23:39,421 INFO L138 Inliner]: procedures = 270, calls = 30, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 93 [2022-11-18 20:23:39,422 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 20:23:39,423 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 20:23:39,423 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 20:23:39,423 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 20:23:39,434 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:23:39" (1/1) ... [2022-11-18 20:23:39,434 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:23:39" (1/1) ... [2022-11-18 20:23:39,447 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:23:39" (1/1) ... [2022-11-18 20:23:39,449 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:23:39" (1/1) ... [2022-11-18 20:23:39,468 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:23:39" (1/1) ... [2022-11-18 20:23:39,472 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:23:39" (1/1) ... [2022-11-18 20:23:39,476 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:23:39" (1/1) ... [2022-11-18 20:23:39,488 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:23:39" (1/1) ... [2022-11-18 20:23:39,490 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 20:23:39,491 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 20:23:39,492 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 20:23:39,492 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 20:23:39,493 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:23:39" (1/1) ... [2022-11-18 20:23:39,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:23:39,525 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_803911e8-fee0-4c39-96d0-ba260a939a57/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:23:39,542 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_803911e8-fee0-4c39-96d0-ba260a939a57/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 20:23:39,561 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_803911e8-fee0-4c39-96d0-ba260a939a57/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 20:23:39,603 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 20:23:39,603 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 20:23:39,603 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 20:23:39,604 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 20:23:39,604 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-18 20:23:39,604 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 20:23:39,604 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-18 20:23:39,605 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-18 20:23:39,605 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 20:23:39,605 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 20:23:39,605 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 20:23:39,607 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-18 20:23:39,767 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 20:23:39,769 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 20:23:40,097 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 20:23:40,106 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 20:23:40,107 INFO L300 CfgBuilder]: Removed 10 assume(true) statements. [2022-11-18 20:23:40,124 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:23:40 BoogieIcfgContainer [2022-11-18 20:23:40,124 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 20:23:40,128 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 20:23:40,129 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 20:23:40,133 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 20:23:40,134 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:23:38" (1/3) ... [2022-11-18 20:23:40,135 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68859ea0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:23:40, skipping insertion in model container [2022-11-18 20:23:40,135 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:23:39" (2/3) ... [2022-11-18 20:23:40,137 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68859ea0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:23:40, skipping insertion in model container [2022-11-18 20:23:40,137 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:23:40" (3/3) ... [2022-11-18 20:23:40,139 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_08-cond_racefree.i [2022-11-18 20:23:40,150 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 20:23:40,163 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 20:23:40,163 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-11-18 20:23:40,163 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 20:23:40,278 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-11-18 20:23:40,330 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 129 places, 141 transitions, 290 flow [2022-11-18 20:23:40,468 INFO L130 PetriNetUnfolder]: 23/185 cut-off events. [2022-11-18 20:23:40,469 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-18 20:23:40,478 INFO L83 FinitePrefix]: Finished finitePrefix Result has 191 conditions, 185 events. 23/185 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 422 event pairs, 0 based on Foata normal form. 0/151 useless extension candidates. Maximal degree in co-relation 89. Up to 6 conditions per place. [2022-11-18 20:23:40,479 INFO L82 GeneralOperation]: Start removeDead. Operand has 129 places, 141 transitions, 290 flow [2022-11-18 20:23:40,495 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 127 places, 138 transitions, 284 flow [2022-11-18 20:23:40,506 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:23:40,513 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;@5bfa071d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:23:40,514 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2022-11-18 20:23:40,537 INFO L130 PetriNetUnfolder]: 5/77 cut-off events. [2022-11-18 20:23:40,538 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 20:23:40,538 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:23:40,539 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] [2022-11-18 20:23:40,540 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-18 20:23:40,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:23:40,546 INFO L85 PathProgramCache]: Analyzing trace with hash -1434864770, now seen corresponding path program 1 times [2022-11-18 20:23:40,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:23:40,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707877054] [2022-11-18 20:23:40,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:23:40,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:23:40,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:41,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:23:41,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:23:41,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707877054] [2022-11-18 20:23:41,114 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707877054] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:23:41,115 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:23:41,115 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:23:41,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933199010] [2022-11-18 20:23:41,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:23:41,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:23:41,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:23:41,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:23:41,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:23:41,172 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 141 [2022-11-18 20:23:41,177 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 138 transitions, 284 flow. Second operand has 4 states, 4 states have (on average 116.75) internal successors, (467), 4 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:23:41,177 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:23:41,177 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 141 [2022-11-18 20:23:41,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:23:41,295 INFO L130 PetriNetUnfolder]: 3/128 cut-off events. [2022-11-18 20:23:41,295 INFO L131 PetriNetUnfolder]: For 3/12 co-relation queries the response was YES. [2022-11-18 20:23:41,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 149 conditions, 128 events. 3/128 cut-off events. For 3/12 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 160 event pairs, 0 based on Foata normal form. 40/157 useless extension candidates. Maximal degree in co-relation 83. Up to 7 conditions per place. [2022-11-18 20:23:41,301 INFO L137 encePairwiseOnDemand]: 123/141 looper letters, 10 selfloop transitions, 4 changer transitions 0/126 dead transitions. [2022-11-18 20:23:41,301 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 126 transitions, 288 flow [2022-11-18 20:23:41,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:23:41,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 20:23:41,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 622 transitions. [2022-11-18 20:23:41,322 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8822695035460993 [2022-11-18 20:23:41,323 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 622 transitions. [2022-11-18 20:23:41,324 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 622 transitions. [2022-11-18 20:23:41,326 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:23:41,329 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 622 transitions. [2022-11-18 20:23:41,333 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 124.4) internal successors, (622), 5 states have internal predecessors, (622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:23:41,342 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 141.0) internal successors, (846), 6 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) [2022-11-18 20:23:41,343 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 141.0) internal successors, (846), 6 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) [2022-11-18 20:23:41,346 INFO L175 Difference]: Start difference. First operand has 127 places, 138 transitions, 284 flow. Second operand 5 states and 622 transitions. [2022-11-18 20:23:41,347 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 126 transitions, 288 flow [2022-11-18 20:23:41,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 126 transitions, 288 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 20:23:41,355 INFO L231 Difference]: Finished difference. Result has 129 places, 124 transitions, 268 flow [2022-11-18 20:23:41,357 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=268, PETRI_PLACES=129, PETRI_TRANSITIONS=124} [2022-11-18 20:23:41,361 INFO L288 CegarLoopForPetriNet]: 127 programPoint places, 2 predicate places. [2022-11-18 20:23:41,362 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 124 transitions, 268 flow [2022-11-18 20:23:41,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 116.75) internal successors, (467), 4 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:23:41,363 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:23:41,363 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] [2022-11-18 20:23:41,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 20:23:41,364 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-18 20:23:41,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:23:41,365 INFO L85 PathProgramCache]: Analyzing trace with hash 306532113, now seen corresponding path program 1 times [2022-11-18 20:23:41,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:23:41,365 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355457078] [2022-11-18 20:23:41,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:23:41,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:23:41,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:41,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:23:41,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:23:41,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355457078] [2022-11-18 20:23:41,527 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355457078] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:23:41,527 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:23:41,528 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:23:41,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452488085] [2022-11-18 20:23:41,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:23:41,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:23:41,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:23:41,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:23:41,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:23:41,533 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 141 [2022-11-18 20:23:41,534 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 124 transitions, 268 flow. Second operand has 4 states, 4 states have (on average 117.0) internal successors, (468), 4 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:23:41,534 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:23:41,534 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 141 [2022-11-18 20:23:41,534 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:23:41,612 INFO L130 PetriNetUnfolder]: 14/215 cut-off events. [2022-11-18 20:23:41,612 INFO L131 PetriNetUnfolder]: For 9/10 co-relation queries the response was YES. [2022-11-18 20:23:41,614 INFO L83 FinitePrefix]: Finished finitePrefix Result has 257 conditions, 215 events. 14/215 cut-off events. For 9/10 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 629 event pairs, 4 based on Foata normal form. 0/194 useless extension candidates. Maximal degree in co-relation 190. Up to 12 conditions per place. [2022-11-18 20:23:41,615 INFO L137 encePairwiseOnDemand]: 135/141 looper letters, 10 selfloop transitions, 4 changer transitions 0/125 dead transitions. [2022-11-18 20:23:41,615 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 125 transitions, 298 flow [2022-11-18 20:23:41,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:23:41,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 20:23:41,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 596 transitions. [2022-11-18 20:23:41,619 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8453900709219858 [2022-11-18 20:23:41,619 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 596 transitions. [2022-11-18 20:23:41,619 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 596 transitions. [2022-11-18 20:23:41,620 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:23:41,620 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 596 transitions. [2022-11-18 20:23:41,622 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 119.2) internal successors, (596), 5 states have internal predecessors, (596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:23:41,625 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 141.0) internal successors, (846), 6 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) [2022-11-18 20:23:41,626 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 141.0) internal successors, (846), 6 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) [2022-11-18 20:23:41,626 INFO L175 Difference]: Start difference. First operand has 129 places, 124 transitions, 268 flow. Second operand 5 states and 596 transitions. [2022-11-18 20:23:41,627 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 125 transitions, 298 flow [2022-11-18 20:23:41,628 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 125 transitions, 290 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-18 20:23:41,631 INFO L231 Difference]: Finished difference. Result has 127 places, 122 transitions, 264 flow [2022-11-18 20:23:41,632 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=264, PETRI_PLACES=127, PETRI_TRANSITIONS=122} [2022-11-18 20:23:41,633 INFO L288 CegarLoopForPetriNet]: 127 programPoint places, 0 predicate places. [2022-11-18 20:23:41,633 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 122 transitions, 264 flow [2022-11-18 20:23:41,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 117.0) internal successors, (468), 4 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:23:41,634 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:23:41,634 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:23:41,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 20:23:41,635 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-18 20:23:41,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:23:41,636 INFO L85 PathProgramCache]: Analyzing trace with hash -24998235, now seen corresponding path program 1 times [2022-11-18 20:23:41,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:23:41,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215435389] [2022-11-18 20:23:41,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:23:41,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:23:41,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:23:41,665 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 20:23:41,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:23:41,710 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 20:23:41,711 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-18 20:23:41,712 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2022-11-18 20:23:41,714 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2022-11-18 20:23:41,715 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2022-11-18 20:23:41,715 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 13 remaining) [2022-11-18 20:23:41,716 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 13 remaining) [2022-11-18 20:23:41,716 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 13 remaining) [2022-11-18 20:23:41,716 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 13 remaining) [2022-11-18 20:23:41,717 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 13 remaining) [2022-11-18 20:23:41,717 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 13 remaining) [2022-11-18 20:23:41,717 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 13 remaining) [2022-11-18 20:23:41,718 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 13 remaining) [2022-11-18 20:23:41,718 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2022-11-18 20:23:41,719 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2022-11-18 20:23:41,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 20:23:41,719 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-11-18 20:23:41,723 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-18 20:23:41,723 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-18 20:23:41,760 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-18 20:23:41,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 162 places, 179 transitions, 376 flow [2022-11-18 20:23:41,817 INFO L130 PetriNetUnfolder]: 40/304 cut-off events. [2022-11-18 20:23:41,817 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-18 20:23:41,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 318 conditions, 304 events. 40/304 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 888 event pairs, 0 based on Foata normal form. 0/242 useless extension candidates. Maximal degree in co-relation 187. Up to 9 conditions per place. [2022-11-18 20:23:41,822 INFO L82 GeneralOperation]: Start removeDead. Operand has 162 places, 179 transitions, 376 flow [2022-11-18 20:23:41,826 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 162 places, 179 transitions, 376 flow [2022-11-18 20:23:41,828 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:23:41,829 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;@5bfa071d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:23:41,830 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2022-11-18 20:23:41,839 INFO L130 PetriNetUnfolder]: 5/77 cut-off events. [2022-11-18 20:23:41,840 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 20:23:41,840 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:23:41,840 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] [2022-11-18 20:23:41,841 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-18 20:23:41,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:23:41,842 INFO L85 PathProgramCache]: Analyzing trace with hash -80539390, now seen corresponding path program 1 times [2022-11-18 20:23:41,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:23:41,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922077036] [2022-11-18 20:23:41,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:23:41,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:23:41,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:41,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:23:41,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:23:41,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922077036] [2022-11-18 20:23:41,967 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922077036] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:23:41,968 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:23:41,968 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:23:41,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550594620] [2022-11-18 20:23:41,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:23:41,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:23:41,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:23:41,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:23:41,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:23:41,974 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 179 [2022-11-18 20:23:41,975 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 179 transitions, 376 flow. Second operand has 4 states, 4 states have (on average 146.75) internal successors, (587), 4 states have internal predecessors, (587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:23:41,975 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:23:41,976 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 179 [2022-11-18 20:23:41,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:23:42,103 INFO L130 PetriNetUnfolder]: 8/246 cut-off events. [2022-11-18 20:23:42,104 INFO L131 PetriNetUnfolder]: For 14/46 co-relation queries the response was YES. [2022-11-18 20:23:42,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 289 conditions, 246 events. 8/246 cut-off events. For 14/46 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 631 event pairs, 0 based on Foata normal form. 124/340 useless extension candidates. Maximal degree in co-relation 159. Up to 21 conditions per place. [2022-11-18 20:23:42,107 INFO L137 encePairwiseOnDemand]: 155/179 looper letters, 19 selfloop transitions, 4 changer transitions 0/168 dead transitions. [2022-11-18 20:23:42,107 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 168 transitions, 400 flow [2022-11-18 20:23:42,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:23:42,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 20:23:42,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 787 transitions. [2022-11-18 20:23:42,110 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8793296089385475 [2022-11-18 20:23:42,111 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 787 transitions. [2022-11-18 20:23:42,111 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 787 transitions. [2022-11-18 20:23:42,112 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:23:42,112 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 787 transitions. [2022-11-18 20:23:42,114 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 157.4) internal successors, (787), 5 states have internal predecessors, (787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:23:42,117 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 179.0) internal successors, (1074), 6 states have internal predecessors, (1074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:23:42,118 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 179.0) internal successors, (1074), 6 states have internal predecessors, (1074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:23:42,118 INFO L175 Difference]: Start difference. First operand has 162 places, 179 transitions, 376 flow. Second operand 5 states and 787 transitions. [2022-11-18 20:23:42,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 168 transitions, 400 flow [2022-11-18 20:23:42,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 168 transitions, 400 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 20:23:42,124 INFO L231 Difference]: Finished difference. Result has 168 places, 164 transitions, 372 flow [2022-11-18 20:23:42,124 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=340, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=372, PETRI_PLACES=168, PETRI_TRANSITIONS=164} [2022-11-18 20:23:42,125 INFO L288 CegarLoopForPetriNet]: 162 programPoint places, 6 predicate places. [2022-11-18 20:23:42,125 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 164 transitions, 372 flow [2022-11-18 20:23:42,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 146.75) internal successors, (587), 4 states have internal predecessors, (587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:23:42,126 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:23:42,127 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] [2022-11-18 20:23:42,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 20:23:42,127 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-18 20:23:42,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:23:42,128 INFO L85 PathProgramCache]: Analyzing trace with hash -2069864619, now seen corresponding path program 1 times [2022-11-18 20:23:42,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:23:42,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120744614] [2022-11-18 20:23:42,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:23:42,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:23:42,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:42,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:23:42,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:23:42,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120744614] [2022-11-18 20:23:42,248 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120744614] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:23:42,248 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:23:42,248 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:23:42,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539989896] [2022-11-18 20:23:42,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:23:42,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:23:42,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:23:42,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:23:42,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:23:42,251 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 179 [2022-11-18 20:23:42,252 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 164 transitions, 372 flow. Second operand has 4 states, 4 states have (on average 143.0) internal successors, (572), 4 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:23:42,252 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:23:42,253 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 179 [2022-11-18 20:23:42,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:23:42,592 INFO L130 PetriNetUnfolder]: 176/1039 cut-off events. [2022-11-18 20:23:42,592 INFO L131 PetriNetUnfolder]: For 108/127 co-relation queries the response was YES. [2022-11-18 20:23:42,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1434 conditions, 1039 events. 176/1039 cut-off events. For 108/127 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 7479 event pairs, 43 based on Foata normal form. 0/914 useless extension candidates. Maximal degree in co-relation 1362. Up to 207 conditions per place. [2022-11-18 20:23:42,607 INFO L137 encePairwiseOnDemand]: 172/179 looper letters, 36 selfloop transitions, 6 changer transitions 0/187 dead transitions. [2022-11-18 20:23:42,607 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 187 transitions, 520 flow [2022-11-18 20:23:42,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:23:42,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 20:23:42,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 756 transitions. [2022-11-18 20:23:42,611 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8446927374301676 [2022-11-18 20:23:42,611 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 756 transitions. [2022-11-18 20:23:42,611 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 756 transitions. [2022-11-18 20:23:42,612 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:23:42,612 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 756 transitions. [2022-11-18 20:23:42,614 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 151.2) internal successors, (756), 5 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:23:42,617 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 179.0) internal successors, (1074), 6 states have internal predecessors, (1074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:23:42,618 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 179.0) internal successors, (1074), 6 states have internal predecessors, (1074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:23:42,618 INFO L175 Difference]: Start difference. First operand has 168 places, 164 transitions, 372 flow. Second operand 5 states and 756 transitions. [2022-11-18 20:23:42,619 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 187 transitions, 520 flow [2022-11-18 20:23:42,622 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 187 transitions, 518 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 20:23:42,625 INFO L231 Difference]: Finished difference. Result has 174 places, 169 transitions, 419 flow [2022-11-18 20:23:42,626 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=370, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=419, PETRI_PLACES=174, PETRI_TRANSITIONS=169} [2022-11-18 20:23:42,629 INFO L288 CegarLoopForPetriNet]: 162 programPoint places, 12 predicate places. [2022-11-18 20:23:42,629 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 169 transitions, 419 flow [2022-11-18 20:23:42,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 143.0) internal successors, (572), 4 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:23:42,630 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:23:42,630 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:23:42,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 20:23:42,633 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-18 20:23:42,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:23:42,633 INFO L85 PathProgramCache]: Analyzing trace with hash 901932390, now seen corresponding path program 1 times [2022-11-18 20:23:42,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:23:42,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317001289] [2022-11-18 20:23:42,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:23:42,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:23:42,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:42,776 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:23:42,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:23:42,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317001289] [2022-11-18 20:23:42,779 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317001289] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:23:42,779 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:23:42,779 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:23:42,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684978400] [2022-11-18 20:23:42,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:23:42,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:23:42,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:23:42,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:23:42,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:23:42,788 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 179 [2022-11-18 20:23:42,789 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 169 transitions, 419 flow. Second operand has 4 states, 4 states have (on average 148.75) internal successors, (595), 4 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:23:42,789 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:23:42,789 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 179 [2022-11-18 20:23:42,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:23:42,905 INFO L130 PetriNetUnfolder]: 11/372 cut-off events. [2022-11-18 20:23:42,905 INFO L131 PetriNetUnfolder]: For 45/107 co-relation queries the response was YES. [2022-11-18 20:23:42,909 INFO L83 FinitePrefix]: Finished finitePrefix Result has 466 conditions, 372 events. 11/372 cut-off events. For 45/107 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1292 event pairs, 0 based on Foata normal form. 16/348 useless extension candidates. Maximal degree in co-relation 301. Up to 16 conditions per place. [2022-11-18 20:23:42,913 INFO L137 encePairwiseOnDemand]: 173/179 looper letters, 11 selfloop transitions, 8 changer transitions 0/169 dead transitions. [2022-11-18 20:23:42,914 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 169 transitions, 455 flow [2022-11-18 20:23:42,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:23:42,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 20:23:42,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 742 transitions. [2022-11-18 20:23:42,917 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.829050279329609 [2022-11-18 20:23:42,917 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 742 transitions. [2022-11-18 20:23:42,917 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 742 transitions. [2022-11-18 20:23:42,918 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:23:42,918 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 742 transitions. [2022-11-18 20:23:42,921 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 148.4) internal successors, (742), 5 states have internal predecessors, (742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:23:42,926 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 179.0) internal successors, (1074), 6 states have internal predecessors, (1074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:23:42,927 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 179.0) internal successors, (1074), 6 states have internal predecessors, (1074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:23:42,927 INFO L175 Difference]: Start difference. First operand has 174 places, 169 transitions, 419 flow. Second operand 5 states and 742 transitions. [2022-11-18 20:23:42,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 169 transitions, 455 flow [2022-11-18 20:23:42,931 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 169 transitions, 452 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 20:23:42,934 INFO L231 Difference]: Finished difference. Result has 177 places, 169 transitions, 436 flow [2022-11-18 20:23:42,934 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=412, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=436, PETRI_PLACES=177, PETRI_TRANSITIONS=169} [2022-11-18 20:23:42,938 INFO L288 CegarLoopForPetriNet]: 162 programPoint places, 15 predicate places. [2022-11-18 20:23:42,939 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 169 transitions, 436 flow [2022-11-18 20:23:42,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 148.75) internal successors, (595), 4 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:23:42,939 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:23:42,940 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:23:42,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-18 20:23:42,941 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-18 20:23:42,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:23:42,942 INFO L85 PathProgramCache]: Analyzing trace with hash -2104866519, now seen corresponding path program 1 times [2022-11-18 20:23:42,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:23:42,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704414797] [2022-11-18 20:23:42,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:23:42,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:23:42,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:43,170 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:23:43,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:23:43,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704414797] [2022-11-18 20:23:43,172 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704414797] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:23:43,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [785176033] [2022-11-18 20:23:43,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:23:43,173 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:23:43,173 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_803911e8-fee0-4c39-96d0-ba260a939a57/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:23:43,177 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_803911e8-fee0-4c39-96d0-ba260a939a57/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:23:43,188 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_803911e8-fee0-4c39-96d0-ba260a939a57/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 20:23:43,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:43,317 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 20:23:43,322 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:23:43,450 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:23:43,450 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:23:43,451 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [785176033] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:23:43,451 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:23:43,451 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-18 20:23:43,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94245084] [2022-11-18 20:23:43,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:23:43,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:23:43,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:23:43,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:23:43,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:23:43,455 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 179 [2022-11-18 20:23:43,457 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 169 transitions, 436 flow. Second operand has 6 states, 6 states have (on average 147.66666666666666) internal successors, (886), 6 states have internal predecessors, (886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:23:43,457 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:23:43,458 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 179 [2022-11-18 20:23:43,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:23:43,626 INFO L130 PetriNetUnfolder]: 11/371 cut-off events. [2022-11-18 20:23:43,626 INFO L131 PetriNetUnfolder]: For 55/112 co-relation queries the response was YES. [2022-11-18 20:23:43,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 474 conditions, 371 events. 11/371 cut-off events. For 55/112 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1291 event pairs, 0 based on Foata normal form. 9/340 useless extension candidates. Maximal degree in co-relation 302. Up to 19 conditions per place. [2022-11-18 20:23:43,632 INFO L137 encePairwiseOnDemand]: 174/179 looper letters, 15 selfloop transitions, 6 changer transitions 0/171 dead transitions. [2022-11-18 20:23:43,632 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 171 transitions, 480 flow [2022-11-18 20:23:43,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:23:43,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 20:23:43,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1037 transitions. [2022-11-18 20:23:43,636 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8276137270550679 [2022-11-18 20:23:43,636 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1037 transitions. [2022-11-18 20:23:43,636 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1037 transitions. [2022-11-18 20:23:43,637 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:23:43,638 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1037 transitions. [2022-11-18 20:23:43,641 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 148.14285714285714) internal successors, (1037), 7 states have internal predecessors, (1037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:23:43,644 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 179.0) internal successors, (1432), 8 states have internal predecessors, (1432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:23:43,645 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 179.0) internal successors, (1432), 8 states have internal predecessors, (1432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:23:43,645 INFO L175 Difference]: Start difference. First operand has 177 places, 169 transitions, 436 flow. Second operand 7 states and 1037 transitions. [2022-11-18 20:23:43,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 171 transitions, 480 flow [2022-11-18 20:23:43,651 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 171 transitions, 468 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 20:23:43,654 INFO L231 Difference]: Finished difference. Result has 179 places, 168 transitions, 432 flow [2022-11-18 20:23:43,655 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=420, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=432, PETRI_PLACES=179, PETRI_TRANSITIONS=168} [2022-11-18 20:23:43,656 INFO L288 CegarLoopForPetriNet]: 162 programPoint places, 17 predicate places. [2022-11-18 20:23:43,661 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 168 transitions, 432 flow [2022-11-18 20:23:43,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 147.66666666666666) internal successors, (886), 6 states have internal predecessors, (886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:23:43,662 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:23:43,662 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:23:43,674 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_803911e8-fee0-4c39-96d0-ba260a939a57/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-18 20:23:43,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_803911e8-fee0-4c39-96d0-ba260a939a57/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:23:43,875 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-18 20:23:43,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:23:43,875 INFO L85 PathProgramCache]: Analyzing trace with hash -498927112, now seen corresponding path program 1 times [2022-11-18 20:23:43,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:23:43,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635517722] [2022-11-18 20:23:43,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:23:43,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:23:43,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:44,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:23:44,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:23:44,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635517722] [2022-11-18 20:23:44,001 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635517722] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:23:44,001 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:23:44,001 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:23:44,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355649166] [2022-11-18 20:23:44,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:23:44,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:23:44,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:23:44,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:23:44,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:23:44,004 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 179 [2022-11-18 20:23:44,005 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 168 transitions, 432 flow. Second operand has 6 states, 6 states have (on average 138.5) internal successors, (831), 6 states have internal predecessors, (831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:23:44,005 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:23:44,005 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 179 [2022-11-18 20:23:44,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:23:44,553 INFO L130 PetriNetUnfolder]: 347/1655 cut-off events. [2022-11-18 20:23:44,553 INFO L131 PetriNetUnfolder]: For 329/369 co-relation queries the response was YES. [2022-11-18 20:23:44,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2564 conditions, 1655 events. 347/1655 cut-off events. For 329/369 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 13776 event pairs, 57 based on Foata normal form. 1/1476 useless extension candidates. Maximal degree in co-relation 2255. Up to 237 conditions per place. [2022-11-18 20:23:44,576 INFO L137 encePairwiseOnDemand]: 168/179 looper letters, 60 selfloop transitions, 19 changer transitions 0/218 dead transitions. [2022-11-18 20:23:44,576 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 218 transitions, 740 flow [2022-11-18 20:23:44,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 20:23:44,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 20:23:44,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1314 transitions. [2022-11-18 20:23:44,581 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8156424581005587 [2022-11-18 20:23:44,581 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1314 transitions. [2022-11-18 20:23:44,582 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1314 transitions. [2022-11-18 20:23:44,583 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:23:44,583 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1314 transitions. [2022-11-18 20:23:44,587 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 146.0) internal successors, (1314), 9 states have internal predecessors, (1314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:23:44,591 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 179.0) internal successors, (1790), 10 states have internal predecessors, (1790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:23:44,592 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 179.0) internal successors, (1790), 10 states have internal predecessors, (1790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:23:44,592 INFO L175 Difference]: Start difference. First operand has 179 places, 168 transitions, 432 flow. Second operand 9 states and 1314 transitions. [2022-11-18 20:23:44,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 218 transitions, 740 flow [2022-11-18 20:23:44,597 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 218 transitions, 729 flow, removed 1 selfloop flow, removed 5 redundant places. [2022-11-18 20:23:44,601 INFO L231 Difference]: Finished difference. Result has 188 places, 180 transitions, 547 flow [2022-11-18 20:23:44,601 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=421, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=547, PETRI_PLACES=188, PETRI_TRANSITIONS=180} [2022-11-18 20:23:44,603 INFO L288 CegarLoopForPetriNet]: 162 programPoint places, 26 predicate places. [2022-11-18 20:23:44,603 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 180 transitions, 547 flow [2022-11-18 20:23:44,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 138.5) internal successors, (831), 6 states have internal predecessors, (831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:23:44,604 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:23:44,604 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:23:44,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-18 20:23:44,607 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-18 20:23:44,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:23:44,608 INFO L85 PathProgramCache]: Analyzing trace with hash 1713129293, now seen corresponding path program 1 times [2022-11-18 20:23:44,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:23:44,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789011060] [2022-11-18 20:23:44,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:23:44,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:23:44,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:44,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:23:44,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:23:44,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789011060] [2022-11-18 20:23:44,804 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789011060] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:23:44,804 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:23:44,804 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:23:44,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856129334] [2022-11-18 20:23:44,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:23:44,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:23:44,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:23:44,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:23:44,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:23:44,809 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 179 [2022-11-18 20:23:44,810 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 180 transitions, 547 flow. Second operand has 6 states, 6 states have (on average 138.66666666666666) internal successors, (832), 6 states have internal predecessors, (832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:23:44,811 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:23:44,811 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 179 [2022-11-18 20:23:44,811 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:23:45,432 INFO L130 PetriNetUnfolder]: 360/1756 cut-off events. [2022-11-18 20:23:45,433 INFO L131 PetriNetUnfolder]: For 1064/1118 co-relation queries the response was YES. [2022-11-18 20:23:45,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3109 conditions, 1756 events. 360/1756 cut-off events. For 1064/1118 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 14515 event pairs, 78 based on Foata normal form. 30/1588 useless extension candidates. Maximal degree in co-relation 2285. Up to 289 conditions per place. [2022-11-18 20:23:45,454 INFO L137 encePairwiseOnDemand]: 168/179 looper letters, 65 selfloop transitions, 19 changer transitions 0/223 dead transitions. [2022-11-18 20:23:45,454 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 223 transitions, 882 flow [2022-11-18 20:23:45,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 20:23:45,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 20:23:45,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1316 transitions. [2022-11-18 20:23:45,459 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8168839230291745 [2022-11-18 20:23:45,459 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1316 transitions. [2022-11-18 20:23:45,460 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1316 transitions. [2022-11-18 20:23:45,461 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:23:45,461 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1316 transitions. [2022-11-18 20:23:45,465 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 146.22222222222223) internal successors, (1316), 9 states have internal predecessors, (1316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:23:45,469 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 179.0) internal successors, (1790), 10 states have internal predecessors, (1790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:23:45,470 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 179.0) internal successors, (1790), 10 states have internal predecessors, (1790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:23:45,470 INFO L175 Difference]: Start difference. First operand has 188 places, 180 transitions, 547 flow. Second operand 9 states and 1316 transitions. [2022-11-18 20:23:45,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 223 transitions, 882 flow [2022-11-18 20:23:45,478 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 223 transitions, 841 flow, removed 11 selfloop flow, removed 4 redundant places. [2022-11-18 20:23:45,481 INFO L231 Difference]: Finished difference. Result has 194 places, 184 transitions, 594 flow [2022-11-18 20:23:45,482 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=512, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=594, PETRI_PLACES=194, PETRI_TRANSITIONS=184} [2022-11-18 20:23:45,482 INFO L288 CegarLoopForPetriNet]: 162 programPoint places, 32 predicate places. [2022-11-18 20:23:45,483 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 184 transitions, 594 flow [2022-11-18 20:23:45,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 138.66666666666666) internal successors, (832), 6 states have internal predecessors, (832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:23:45,483 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:23:45,484 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:23:45,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-18 20:23:45,484 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-18 20:23:45,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:23:45,485 INFO L85 PathProgramCache]: Analyzing trace with hash -798215239, now seen corresponding path program 1 times [2022-11-18 20:23:45,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:23:45,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550936916] [2022-11-18 20:23:45,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:23:45,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:23:45,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:45,582 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 20:23:45,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:23:45,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550936916] [2022-11-18 20:23:45,582 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550936916] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:23:45,582 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:23:45,583 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:23:45,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821340562] [2022-11-18 20:23:45,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:23:45,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:23:45,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:23:45,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:23:45,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:23:45,592 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 179 [2022-11-18 20:23:45,593 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 184 transitions, 594 flow. Second operand has 4 states, 4 states have (on average 143.25) internal successors, (573), 4 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:23:45,593 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:23:45,594 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 179 [2022-11-18 20:23:45,594 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:23:46,054 INFO L130 PetriNetUnfolder]: 268/1635 cut-off events. [2022-11-18 20:23:46,054 INFO L131 PetriNetUnfolder]: For 1182/1259 co-relation queries the response was YES. [2022-11-18 20:23:46,065 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2993 conditions, 1635 events. 268/1635 cut-off events. For 1182/1259 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 13805 event pairs, 61 based on Foata normal form. 22/1507 useless extension candidates. Maximal degree in co-relation 2715. Up to 362 conditions per place. [2022-11-18 20:23:46,076 INFO L137 encePairwiseOnDemand]: 172/179 looper letters, 55 selfloop transitions, 7 changer transitions 0/210 dead transitions. [2022-11-18 20:23:46,076 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 210 transitions, 856 flow [2022-11-18 20:23:46,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:23:46,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 20:23:46,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 754 transitions. [2022-11-18 20:23:46,080 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8424581005586592 [2022-11-18 20:23:46,080 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 754 transitions. [2022-11-18 20:23:46,081 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 754 transitions. [2022-11-18 20:23:46,081 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:23:46,082 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 754 transitions. [2022-11-18 20:23:46,084 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 150.8) internal successors, (754), 5 states have internal predecessors, (754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:23:46,087 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 179.0) internal successors, (1074), 6 states have internal predecessors, (1074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:23:46,088 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 179.0) internal successors, (1074), 6 states have internal predecessors, (1074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:23:46,088 INFO L175 Difference]: Start difference. First operand has 194 places, 184 transitions, 594 flow. Second operand 5 states and 754 transitions. [2022-11-18 20:23:46,088 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 210 transitions, 856 flow [2022-11-18 20:23:46,096 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 210 transitions, 828 flow, removed 2 selfloop flow, removed 4 redundant places. [2022-11-18 20:23:46,100 INFO L231 Difference]: Finished difference. Result has 197 places, 187 transitions, 624 flow [2022-11-18 20:23:46,101 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=576, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=624, PETRI_PLACES=197, PETRI_TRANSITIONS=187} [2022-11-18 20:23:46,103 INFO L288 CegarLoopForPetriNet]: 162 programPoint places, 35 predicate places. [2022-11-18 20:23:46,103 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 187 transitions, 624 flow [2022-11-18 20:23:46,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 143.25) internal successors, (573), 4 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:23:46,104 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:23:46,105 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:23:46,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-18 20:23:46,105 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-18 20:23:46,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:23:46,106 INFO L85 PathProgramCache]: Analyzing trace with hash 1268687409, now seen corresponding path program 1 times [2022-11-18 20:23:46,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:23:46,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485092642] [2022-11-18 20:23:46,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:23:46,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:23:46,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:23:46,141 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 20:23:46,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:23:46,179 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 20:23:46,180 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-18 20:23:46,180 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2022-11-18 20:23:46,180 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2022-11-18 20:23:46,181 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2022-11-18 20:23:46,181 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2022-11-18 20:23:46,181 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2022-11-18 20:23:46,182 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2022-11-18 20:23:46,182 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2022-11-18 20:23:46,182 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2022-11-18 20:23:46,182 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 17 remaining) [2022-11-18 20:23:46,183 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 17 remaining) [2022-11-18 20:23:46,183 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 17 remaining) [2022-11-18 20:23:46,183 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2022-11-18 20:23:46,183 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2022-11-18 20:23:46,184 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2022-11-18 20:23:46,184 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2022-11-18 20:23:46,184 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2022-11-18 20:23:46,185 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2022-11-18 20:23:46,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-18 20:23:46,185 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:23:46,186 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-18 20:23:46,186 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-18 20:23:46,244 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-18 20:23:46,251 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 195 places, 217 transitions, 464 flow [2022-11-18 20:23:46,321 INFO L130 PetriNetUnfolder]: 62/464 cut-off events. [2022-11-18 20:23:46,321 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-11-18 20:23:46,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 492 conditions, 464 events. 62/464 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1556 event pairs, 1 based on Foata normal form. 0/366 useless extension candidates. Maximal degree in co-relation 312. Up to 16 conditions per place. [2022-11-18 20:23:46,325 INFO L82 GeneralOperation]: Start removeDead. Operand has 195 places, 217 transitions, 464 flow [2022-11-18 20:23:46,332 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 195 places, 217 transitions, 464 flow [2022-11-18 20:23:46,334 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:23:46,334 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;@5bfa071d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:23:46,335 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2022-11-18 20:23:46,342 INFO L130 PetriNetUnfolder]: 5/77 cut-off events. [2022-11-18 20:23:46,342 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 20:23:46,342 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:23:46,343 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] [2022-11-18 20:23:46,343 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-18 20:23:46,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:23:46,344 INFO L85 PathProgramCache]: Analyzing trace with hash -1013144250, now seen corresponding path program 1 times [2022-11-18 20:23:46,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:23:46,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466606601] [2022-11-18 20:23:46,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:23:46,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:23:46,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:46,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:23:46,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:23:46,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466606601] [2022-11-18 20:23:46,432 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466606601] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:23:46,433 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:23:46,433 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:23:46,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131977911] [2022-11-18 20:23:46,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:23:46,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:23:46,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:23:46,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:23:46,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:23:46,436 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 217 [2022-11-18 20:23:46,438 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 217 transitions, 464 flow. Second operand has 4 states, 4 states have (on average 176.75) internal successors, (707), 4 states have internal predecessors, (707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:23:46,438 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:23:46,438 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 217 [2022-11-18 20:23:46,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:23:46,597 INFO L130 PetriNetUnfolder]: 16/391 cut-off events. [2022-11-18 20:23:46,598 INFO L131 PetriNetUnfolder]: For 76/184 co-relation queries the response was YES. [2022-11-18 20:23:46,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 467 conditions, 391 events. 16/391 cut-off events. For 76/184 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1300 event pairs, 1 based on Foata normal form. 306/644 useless extension candidates. Maximal degree in co-relation 287. Up to 40 conditions per place. [2022-11-18 20:23:46,603 INFO L137 encePairwiseOnDemand]: 187/217 looper letters, 21 selfloop transitions, 4 changer transitions 0/200 dead transitions. [2022-11-18 20:23:46,603 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 200 transitions, 480 flow [2022-11-18 20:23:46,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:23:46,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 20:23:46,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 945 transitions. [2022-11-18 20:23:46,607 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8709677419354839 [2022-11-18 20:23:46,608 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 945 transitions. [2022-11-18 20:23:46,608 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 945 transitions. [2022-11-18 20:23:46,609 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:23:46,609 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 945 transitions. [2022-11-18 20:23:46,612 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 189.0) internal successors, (945), 5 states have internal predecessors, (945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:23:46,615 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 217.0) internal successors, (1302), 6 states have internal predecessors, (1302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:23:46,616 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 217.0) internal successors, (1302), 6 states have internal predecessors, (1302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:23:46,616 INFO L175 Difference]: Start difference. First operand has 195 places, 217 transitions, 464 flow. Second operand 5 states and 945 transitions. [2022-11-18 20:23:46,616 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 200 transitions, 480 flow [2022-11-18 20:23:46,618 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 200 transitions, 480 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 20:23:46,622 INFO L231 Difference]: Finished difference. Result has 201 places, 196 transitions, 448 flow [2022-11-18 20:23:46,624 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=416, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=448, PETRI_PLACES=201, PETRI_TRANSITIONS=196} [2022-11-18 20:23:46,625 INFO L288 CegarLoopForPetriNet]: 195 programPoint places, 6 predicate places. [2022-11-18 20:23:46,626 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 196 transitions, 448 flow [2022-11-18 20:23:46,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 176.75) internal successors, (707), 4 states have internal predecessors, (707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:23:46,626 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:23:46,627 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] [2022-11-18 20:23:46,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-18 20:23:46,627 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-18 20:23:46,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:23:46,628 INFO L85 PathProgramCache]: Analyzing trace with hash -1320238119, now seen corresponding path program 1 times [2022-11-18 20:23:46,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:23:46,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076121446] [2022-11-18 20:23:46,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:23:46,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:23:46,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:46,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:23:46,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:23:46,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076121446] [2022-11-18 20:23:46,731 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076121446] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:23:46,731 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:23:46,732 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:23:46,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004410520] [2022-11-18 20:23:46,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:23:46,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:23:46,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:23:46,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:23:46,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:23:46,735 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 217 [2022-11-18 20:23:46,737 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 196 transitions, 448 flow. Second operand has 4 states, 4 states have (on average 169.0) internal successors, (676), 4 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:23:46,737 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:23:46,737 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 217 [2022-11-18 20:23:46,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:23:48,751 INFO L130 PetriNetUnfolder]: 1991/9004 cut-off events. [2022-11-18 20:23:48,751 INFO L131 PetriNetUnfolder]: For 1461/1606 co-relation queries the response was YES. [2022-11-18 20:23:48,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12660 conditions, 9004 events. 1991/9004 cut-off events. For 1461/1606 co-relation queries the response was YES. Maximal size of possible extension queue 394. Compared 103813 event pairs, 1115 based on Foata normal form. 1/7618 useless extension candidates. Maximal degree in co-relation 12587. Up to 2017 conditions per place. [2022-11-18 20:23:48,886 INFO L137 encePairwiseOnDemand]: 209/217 looper letters, 52 selfloop transitions, 8 changer transitions 0/231 dead transitions. [2022-11-18 20:23:48,887 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 231 transitions, 680 flow [2022-11-18 20:23:48,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:23:48,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 20:23:48,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 904 transitions. [2022-11-18 20:23:48,891 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8331797235023042 [2022-11-18 20:23:48,892 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 904 transitions. [2022-11-18 20:23:48,892 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 904 transitions. [2022-11-18 20:23:48,893 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:23:48,893 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 904 transitions. [2022-11-18 20:23:48,896 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 180.8) internal successors, (904), 5 states have internal predecessors, (904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:23:48,899 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 217.0) internal successors, (1302), 6 states have internal predecessors, (1302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:23:48,900 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 217.0) internal successors, (1302), 6 states have internal predecessors, (1302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:23:48,901 INFO L175 Difference]: Start difference. First operand has 201 places, 196 transitions, 448 flow. Second operand 5 states and 904 transitions. [2022-11-18 20:23:48,901 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 231 transitions, 680 flow [2022-11-18 20:23:48,905 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 231 transitions, 678 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 20:23:48,909 INFO L231 Difference]: Finished difference. Result has 207 places, 203 transitions, 510 flow [2022-11-18 20:23:48,910 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=446, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=510, PETRI_PLACES=207, PETRI_TRANSITIONS=203} [2022-11-18 20:23:48,910 INFO L288 CegarLoopForPetriNet]: 195 programPoint places, 12 predicate places. [2022-11-18 20:23:48,911 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 203 transitions, 510 flow [2022-11-18 20:23:48,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 169.0) internal successors, (676), 4 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:23:48,912 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:23:48,912 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:23:48,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-18 20:23:48,912 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-18 20:23:48,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:23:48,913 INFO L85 PathProgramCache]: Analyzing trace with hash -1533711218, now seen corresponding path program 1 times [2022-11-18 20:23:48,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:23:48,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429867938] [2022-11-18 20:23:48,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:23:48,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:23:48,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:48,983 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:23:48,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:23:48,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429867938] [2022-11-18 20:23:48,984 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429867938] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:23:48,985 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:23:48,985 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:23:48,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128711446] [2022-11-18 20:23:48,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:23:48,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:23:48,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:23:48,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:23:48,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:23:48,988 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 217 [2022-11-18 20:23:48,989 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 203 transitions, 510 flow. Second operand has 4 states, 4 states have (on average 178.75) internal successors, (715), 4 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:23:48,989 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:23:48,990 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 217 [2022-11-18 20:23:48,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:23:49,264 INFO L130 PetriNetUnfolder]: 46/894 cut-off events. [2022-11-18 20:23:49,264 INFO L131 PetriNetUnfolder]: For 291/733 co-relation queries the response was YES. [2022-11-18 20:23:49,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1127 conditions, 894 events. 46/894 cut-off events. For 291/733 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 5323 event pairs, 7 based on Foata normal form. 41/815 useless extension candidates. Maximal degree in co-relation 783. Up to 52 conditions per place. [2022-11-18 20:23:49,277 INFO L137 encePairwiseOnDemand]: 211/217 looper letters, 13 selfloop transitions, 8 changer transitions 0/203 dead transitions. [2022-11-18 20:23:49,277 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 203 transitions, 550 flow [2022-11-18 20:23:49,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:23:49,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 20:23:49,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 894 transitions. [2022-11-18 20:23:49,281 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.823963133640553 [2022-11-18 20:23:49,281 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 894 transitions. [2022-11-18 20:23:49,281 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 894 transitions. [2022-11-18 20:23:49,282 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:23:49,283 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 894 transitions. [2022-11-18 20:23:49,286 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 178.8) internal successors, (894), 5 states have internal predecessors, (894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:23:49,289 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 217.0) internal successors, (1302), 6 states have internal predecessors, (1302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:23:49,290 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 217.0) internal successors, (1302), 6 states have internal predecessors, (1302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:23:49,290 INFO L175 Difference]: Start difference. First operand has 207 places, 203 transitions, 510 flow. Second operand 5 states and 894 transitions. [2022-11-18 20:23:49,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 203 transitions, 550 flow [2022-11-18 20:23:49,293 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 203 transitions, 546 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 20:23:49,297 INFO L231 Difference]: Finished difference. Result has 210 places, 203 transitions, 526 flow [2022-11-18 20:23:49,298 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=502, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=526, PETRI_PLACES=210, PETRI_TRANSITIONS=203} [2022-11-18 20:23:49,298 INFO L288 CegarLoopForPetriNet]: 195 programPoint places, 15 predicate places. [2022-11-18 20:23:49,299 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 203 transitions, 526 flow [2022-11-18 20:23:49,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 178.75) internal successors, (715), 4 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:23:49,299 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:23:49,346 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:23:49,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-18 20:23:49,346 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-18 20:23:49,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:23:49,347 INFO L85 PathProgramCache]: Analyzing trace with hash -300406822, now seen corresponding path program 1 times [2022-11-18 20:23:49,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:23:49,347 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037701018] [2022-11-18 20:23:49,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:23:49,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:23:49,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:49,438 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:23:49,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:23:49,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037701018] [2022-11-18 20:23:49,439 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037701018] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:23:49,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [473065478] [2022-11-18 20:23:49,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:23:49,440 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:23:49,440 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_803911e8-fee0-4c39-96d0-ba260a939a57/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:23:49,441 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_803911e8-fee0-4c39-96d0-ba260a939a57/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:23:49,467 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_803911e8-fee0-4c39-96d0-ba260a939a57/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 20:23:49,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:49,561 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 20:23:49,565 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:23:49,649 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:23:49,649 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:23:49,650 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [473065478] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:23:49,650 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:23:49,650 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-18 20:23:49,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863045260] [2022-11-18 20:23:49,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:23:49,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:23:49,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:23:49,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:23:49,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:23:49,656 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 217 [2022-11-18 20:23:49,657 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 203 transitions, 526 flow. Second operand has 6 states, 6 states have (on average 177.66666666666666) internal successors, (1066), 6 states have internal predecessors, (1066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:23:49,657 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:23:49,658 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 217 [2022-11-18 20:23:49,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:23:49,920 INFO L130 PetriNetUnfolder]: 46/892 cut-off events. [2022-11-18 20:23:49,920 INFO L131 PetriNetUnfolder]: For 293/694 co-relation queries the response was YES. [2022-11-18 20:23:49,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1136 conditions, 892 events. 46/892 cut-off events. For 293/694 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 5273 event pairs, 7 based on Foata normal form. 18/790 useless extension candidates. Maximal degree in co-relation 783. Up to 58 conditions per place. [2022-11-18 20:23:49,932 INFO L137 encePairwiseOnDemand]: 212/217 looper letters, 17 selfloop transitions, 6 changer transitions 0/205 dead transitions. [2022-11-18 20:23:49,932 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 205 transitions, 574 flow [2022-11-18 20:23:49,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:23:49,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 20:23:49,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1249 transitions. [2022-11-18 20:23:49,936 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8222514812376563 [2022-11-18 20:23:49,936 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1249 transitions. [2022-11-18 20:23:49,936 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1249 transitions. [2022-11-18 20:23:49,938 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:23:49,938 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1249 transitions. [2022-11-18 20:23:49,941 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 178.42857142857142) internal successors, (1249), 7 states have internal predecessors, (1249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:23:49,945 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 217.0) internal successors, (1736), 8 states have internal predecessors, (1736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:23:49,946 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 217.0) internal successors, (1736), 8 states have internal predecessors, (1736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:23:49,946 INFO L175 Difference]: Start difference. First operand has 210 places, 203 transitions, 526 flow. Second operand 7 states and 1249 transitions. [2022-11-18 20:23:49,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 205 transitions, 574 flow [2022-11-18 20:23:49,948 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 205 transitions, 562 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 20:23:49,951 INFO L231 Difference]: Finished difference. Result has 212 places, 202 transitions, 522 flow [2022-11-18 20:23:49,952 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=510, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=522, PETRI_PLACES=212, PETRI_TRANSITIONS=202} [2022-11-18 20:23:49,952 INFO L288 CegarLoopForPetriNet]: 195 programPoint places, 17 predicate places. [2022-11-18 20:23:49,952 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 202 transitions, 522 flow [2022-11-18 20:23:49,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 177.66666666666666) internal successors, (1066), 6 states have internal predecessors, (1066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:23:49,953 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:23:49,953 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:23:49,965 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_803911e8-fee0-4c39-96d0-ba260a939a57/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-18 20:23:50,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_803911e8-fee0-4c39-96d0-ba260a939a57/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:23:50,165 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-18 20:23:50,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:23:50,165 INFO L85 PathProgramCache]: Analyzing trace with hash 458889877, now seen corresponding path program 1 times [2022-11-18 20:23:50,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:23:50,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264892676] [2022-11-18 20:23:50,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:23:50,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:23:50,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:50,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:23:50,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:23:50,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264892676] [2022-11-18 20:23:50,270 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264892676] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:23:50,270 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:23:50,270 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:23:50,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316470646] [2022-11-18 20:23:50,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:23:50,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:23:50,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:23:50,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:23:50,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:23:50,273 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 217 [2022-11-18 20:23:50,274 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 202 transitions, 522 flow. Second operand has 6 states, 6 states have (on average 164.5) internal successors, (987), 6 states have internal predecessors, (987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:23:50,274 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:23:50,274 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 217 [2022-11-18 20:23:50,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:23:53,618 INFO L130 PetriNetUnfolder]: 4149/15247 cut-off events. [2022-11-18 20:23:53,618 INFO L131 PetriNetUnfolder]: For 5079/5442 co-relation queries the response was YES. [2022-11-18 20:23:53,728 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24511 conditions, 15247 events. 4149/15247 cut-off events. For 5079/5442 co-relation queries the response was YES. Maximal size of possible extension queue 810. Compared 188264 event pairs, 1144 based on Foata normal form. 10/13227 useless extension candidates. Maximal degree in co-relation 8507. Up to 2727 conditions per place. [2022-11-18 20:23:53,935 INFO L137 encePairwiseOnDemand]: 204/217 looper letters, 100 selfloop transitions, 27 changer transitions 0/292 dead transitions. [2022-11-18 20:23:53,935 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 292 transitions, 1102 flow [2022-11-18 20:23:53,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 20:23:53,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 20:23:53,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1596 transitions. [2022-11-18 20:23:53,940 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8172043010752689 [2022-11-18 20:23:53,940 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1596 transitions. [2022-11-18 20:23:53,940 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1596 transitions. [2022-11-18 20:23:53,942 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:23:53,942 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1596 transitions. [2022-11-18 20:23:53,956 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 177.33333333333334) internal successors, (1596), 9 states have internal predecessors, (1596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:23:53,960 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 217.0) internal successors, (2170), 10 states have internal predecessors, (2170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:23:53,961 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 217.0) internal successors, (2170), 10 states have internal predecessors, (2170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:23:53,961 INFO L175 Difference]: Start difference. First operand has 212 places, 202 transitions, 522 flow. Second operand 9 states and 1596 transitions. [2022-11-18 20:23:53,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 292 transitions, 1102 flow [2022-11-18 20:23:53,977 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 292 transitions, 1091 flow, removed 1 selfloop flow, removed 5 redundant places. [2022-11-18 20:23:53,982 INFO L231 Difference]: Finished difference. Result has 221 places, 221 transitions, 715 flow [2022-11-18 20:23:53,983 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=511, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=715, PETRI_PLACES=221, PETRI_TRANSITIONS=221} [2022-11-18 20:23:53,983 INFO L288 CegarLoopForPetriNet]: 195 programPoint places, 26 predicate places. [2022-11-18 20:23:53,983 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 221 transitions, 715 flow [2022-11-18 20:23:53,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 164.5) internal successors, (987), 6 states have internal predecessors, (987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:23:53,985 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:23:53,985 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:23:53,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-18 20:23:53,985 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-18 20:23:53,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:23:53,986 INFO L85 PathProgramCache]: Analyzing trace with hash 1340685169, now seen corresponding path program 1 times [2022-11-18 20:23:53,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:23:53,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495568446] [2022-11-18 20:23:53,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:23:53,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:23:54,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:54,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:23:54,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:23:54,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495568446] [2022-11-18 20:23:54,123 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495568446] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:23:54,123 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:23:54,123 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:23:54,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200837176] [2022-11-18 20:23:54,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:23:54,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:23:54,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:23:54,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:23:54,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:23:54,126 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 217 [2022-11-18 20:23:54,127 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 221 transitions, 715 flow. Second operand has 6 states, 6 states have (on average 164.66666666666666) internal successors, (988), 6 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) [2022-11-18 20:23:54,127 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:23:54,127 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 217 [2022-11-18 20:23:54,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:23:57,631 INFO L130 PetriNetUnfolder]: 4153/14735 cut-off events. [2022-11-18 20:23:57,631 INFO L131 PetriNetUnfolder]: For 14384/14840 co-relation queries the response was YES. [2022-11-18 20:23:57,716 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28880 conditions, 14735 events. 4153/14735 cut-off events. For 14384/14840 co-relation queries the response was YES. Maximal size of possible extension queue 801. Compared 179707 event pairs, 1116 based on Foata normal form. 191/13284 useless extension candidates. Maximal degree in co-relation 19433. Up to 3119 conditions per place. [2022-11-18 20:23:57,823 INFO L137 encePairwiseOnDemand]: 204/217 looper letters, 107 selfloop transitions, 27 changer transitions 0/299 dead transitions. [2022-11-18 20:23:57,823 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 299 transitions, 1360 flow [2022-11-18 20:23:57,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 20:23:57,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 20:23:57,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1594 transitions. [2022-11-18 20:23:57,828 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8161802355350742 [2022-11-18 20:23:57,828 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1594 transitions. [2022-11-18 20:23:57,828 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1594 transitions. [2022-11-18 20:23:57,830 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:23:57,830 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1594 transitions. [2022-11-18 20:23:57,835 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 177.11111111111111) internal successors, (1594), 9 states have internal predecessors, (1594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:23:57,839 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 217.0) internal successors, (2170), 10 states have internal predecessors, (2170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:23:57,840 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 217.0) internal successors, (2170), 10 states have internal predecessors, (2170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:23:57,841 INFO L175 Difference]: Start difference. First operand has 221 places, 221 transitions, 715 flow. Second operand 9 states and 1594 transitions. [2022-11-18 20:23:57,841 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 299 transitions, 1360 flow [2022-11-18 20:23:57,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 299 transitions, 1293 flow, removed 20 selfloop flow, removed 4 redundant places. [2022-11-18 20:23:57,877 INFO L231 Difference]: Finished difference. Result has 227 places, 229 transitions, 796 flow [2022-11-18 20:23:57,878 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=664, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=796, PETRI_PLACES=227, PETRI_TRANSITIONS=229} [2022-11-18 20:23:57,880 INFO L288 CegarLoopForPetriNet]: 195 programPoint places, 32 predicate places. [2022-11-18 20:23:57,880 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 229 transitions, 796 flow [2022-11-18 20:23:57,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 164.66666666666666) internal successors, (988), 6 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) [2022-11-18 20:23:57,881 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:23:57,881 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:23:57,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-18 20:23:57,882 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-18 20:23:57,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:23:57,882 INFO L85 PathProgramCache]: Analyzing trace with hash -1216871647, now seen corresponding path program 1 times [2022-11-18 20:23:57,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:23:57,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479549986] [2022-11-18 20:23:57,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:23:57,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:23:57,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:58,094 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 20:23:58,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:23:58,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479549986] [2022-11-18 20:23:58,094 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479549986] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:23:58,095 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:23:58,095 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:23:58,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839884582] [2022-11-18 20:23:58,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:23:58,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:23:58,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:23:58,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:23:58,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:23:58,098 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 217 [2022-11-18 20:23:58,099 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 229 transitions, 796 flow. Second operand has 4 states, 4 states have (on average 169.25) internal successors, (677), 4 states have internal predecessors, (677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:23:58,099 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:23:58,099 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 217 [2022-11-18 20:23:58,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:24:01,612 INFO L130 PetriNetUnfolder]: 4490/18641 cut-off events. [2022-11-18 20:24:01,612 INFO L131 PetriNetUnfolder]: For 18317/19254 co-relation queries the response was YES. [2022-11-18 20:24:01,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36456 conditions, 18641 events. 4490/18641 cut-off events. For 18317/19254 co-relation queries the response was YES. Maximal size of possible extension queue 1007. Compared 242945 event pairs, 2484 based on Foata normal form. 246/16645 useless extension candidates. Maximal degree in co-relation 25566. Up to 4807 conditions per place. [2022-11-18 20:24:01,992 INFO L137 encePairwiseOnDemand]: 209/217 looper letters, 93 selfloop transitions, 11 changer transitions 0/278 dead transitions. [2022-11-18 20:24:01,992 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 278 transitions, 1312 flow [2022-11-18 20:24:01,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:24:01,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 20:24:01,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 902 transitions. [2022-11-18 20:24:01,995 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8313364055299539 [2022-11-18 20:24:01,996 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 902 transitions. [2022-11-18 20:24:01,996 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 902 transitions. [2022-11-18 20:24:01,997 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:24:01,997 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 902 transitions. [2022-11-18 20:24:02,000 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 180.4) internal successors, (902), 5 states have internal predecessors, (902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:24:02,002 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 217.0) internal successors, (1302), 6 states have internal predecessors, (1302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:24:02,003 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 217.0) internal successors, (1302), 6 states have internal predecessors, (1302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:24:02,004 INFO L175 Difference]: Start difference. First operand has 227 places, 229 transitions, 796 flow. Second operand 5 states and 902 transitions. [2022-11-18 20:24:02,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 278 transitions, 1312 flow [2022-11-18 20:24:02,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 278 transitions, 1270 flow, removed 2 selfloop flow, removed 4 redundant places. [2022-11-18 20:24:02,071 INFO L231 Difference]: Finished difference. Result has 230 places, 234 transitions, 846 flow [2022-11-18 20:24:02,072 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=771, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=846, PETRI_PLACES=230, PETRI_TRANSITIONS=234} [2022-11-18 20:24:02,072 INFO L288 CegarLoopForPetriNet]: 195 programPoint places, 35 predicate places. [2022-11-18 20:24:02,073 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 234 transitions, 846 flow [2022-11-18 20:24:02,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 169.25) internal successors, (677), 4 states have internal predecessors, (677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:24:02,073 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:24:02,074 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:24:02,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-18 20:24:02,074 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-18 20:24:02,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:24:02,075 INFO L85 PathProgramCache]: Analyzing trace with hash 1887809541, now seen corresponding path program 1 times [2022-11-18 20:24:02,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:24:02,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709728682] [2022-11-18 20:24:02,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:24:02,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:24:02,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:02,198 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 20:24:02,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:24:02,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709728682] [2022-11-18 20:24:02,199 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709728682] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:24:02,199 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:24:02,199 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:24:02,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906087014] [2022-11-18 20:24:02,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:24:02,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:24:02,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:24:02,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:24:02,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:24:02,202 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 217 [2022-11-18 20:24:02,203 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 234 transitions, 846 flow. Second operand has 6 states, 6 states have (on average 164.66666666666666) internal successors, (988), 6 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) [2022-11-18 20:24:02,204 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:24:02,204 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 217 [2022-11-18 20:24:02,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:24:08,893 INFO L130 PetriNetUnfolder]: 9315/34752 cut-off events. [2022-11-18 20:24:08,893 INFO L131 PetriNetUnfolder]: For 33870/35920 co-relation queries the response was YES. [2022-11-18 20:24:09,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70547 conditions, 34752 events. 9315/34752 cut-off events. For 33870/35920 co-relation queries the response was YES. Maximal size of possible extension queue 2056. Compared 498009 event pairs, 2270 based on Foata normal form. 440/31997 useless extension candidates. Maximal degree in co-relation 63542. Up to 7057 conditions per place. [2022-11-18 20:24:09,583 INFO L137 encePairwiseOnDemand]: 204/217 looper letters, 149 selfloop transitions, 46 changer transitions 0/364 dead transitions. [2022-11-18 20:24:09,583 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 364 transitions, 1992 flow [2022-11-18 20:24:09,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 20:24:09,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 20:24:09,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1593 transitions. [2022-11-18 20:24:09,589 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.815668202764977 [2022-11-18 20:24:09,589 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1593 transitions. [2022-11-18 20:24:09,589 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1593 transitions. [2022-11-18 20:24:09,591 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:24:09,591 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1593 transitions. [2022-11-18 20:24:09,596 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 177.0) internal successors, (1593), 9 states have internal predecessors, (1593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:24:09,601 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 217.0) internal successors, (2170), 10 states have internal predecessors, (2170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:24:09,602 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 217.0) internal successors, (2170), 10 states have internal predecessors, (2170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:24:09,602 INFO L175 Difference]: Start difference. First operand has 230 places, 234 transitions, 846 flow. Second operand 9 states and 1593 transitions. [2022-11-18 20:24:09,602 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 364 transitions, 1992 flow [2022-11-18 20:24:09,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 364 transitions, 1986 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 20:24:09,820 INFO L231 Difference]: Finished difference. Result has 243 places, 269 transitions, 1330 flow [2022-11-18 20:24:09,821 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=841, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1330, PETRI_PLACES=243, PETRI_TRANSITIONS=269} [2022-11-18 20:24:09,821 INFO L288 CegarLoopForPetriNet]: 195 programPoint places, 48 predicate places. [2022-11-18 20:24:09,822 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 269 transitions, 1330 flow [2022-11-18 20:24:09,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 164.66666666666666) internal successors, (988), 6 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) [2022-11-18 20:24:09,823 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:24:09,823 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:24:09,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-18 20:24:09,823 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-18 20:24:09,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:24:09,824 INFO L85 PathProgramCache]: Analyzing trace with hash 1835132271, now seen corresponding path program 1 times [2022-11-18 20:24:09,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:24:09,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367933764] [2022-11-18 20:24:09,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:24:09,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:24:09,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:10,115 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 20:24:10,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:24:10,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367933764] [2022-11-18 20:24:10,116 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367933764] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:24:10,116 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:24:10,116 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 20:24:10,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67384661] [2022-11-18 20:24:10,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:24:10,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:24:10,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:24:10,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:24:10,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:24:10,120 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 217 [2022-11-18 20:24:10,121 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 269 transitions, 1330 flow. Second operand has 6 states, 6 states have (on average 156.0) internal successors, (936), 6 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:24:10,121 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:24:10,122 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 217 [2022-11-18 20:24:10,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:24:13,777 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([771] L939-7-->L939-8: Formula: (= |v_#pthreadsMutex_15| (store |v_#pthreadsMutex_16| |v_~#__global_lock~0.base_10| (store (select |v_#pthreadsMutex_16| |v_~#__global_lock~0.base_10|) |v_~#__global_lock~0.offset_10| 0))) InVars {#pthreadsMutex=|v_#pthreadsMutex_16|, ~#__global_lock~0.base=|v_~#__global_lock~0.base_10|, ~#__global_lock~0.offset=|v_~#__global_lock~0.offset_10|} OutVars{#pthreadsMutex=|v_#pthreadsMutex_15|, ~#__global_lock~0.base=|v_~#__global_lock~0.base_10|, ~#__global_lock~0.offset=|v_~#__global_lock~0.offset_10|} AuxVars[] AssignedVars[#pthreadsMutex][162], [t_funThread1of3ForFork0InUse, t_funThread2of3ForFork0InUse, t_funThread3of3ForFork0NotInUse, Black: 451#(<= 1 ~global~0), 498#(and (<= |~#__global_lock~0.base| 3) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), 218#true, Black: 458#(and (<= 1 |t_funThread1of3ForFork0_#t~post35|) (<= 1 ~global~0)), Black: 200#(= |ULTIMATE.start_main_~i~1#1| 0), Black: 203#(and (= |ULTIMATE.start_main_~i~1#1| 0) (= 0 |ULTIMATE.start_main_#t~post37#1|)), Black: 464#(= ~global~0 0), 231#(<= 1 |ULTIMATE.start_main_~i~1#1|), Black: 465#(= |t_funThread2of3ForFork0_#t~post33| 0), Black: 467#(and (= ~global~0 0) (= |t_funThread2of3ForFork0_#t~post33| 0)), Black: 211#(= |t_funThread1of3ForFork0_#t~post33| 0), 472#true, Black: 210#(= ~global~0 0), Black: 213#(and (= ~global~0 0) (= |t_funThread1of3ForFork0_#t~post33| 0)), 8#L941true, 428#true, Black: 477#(<= |t_funThread2of3ForFork0_#t~post35| 1), Black: 475#(= |t_funThread2of3ForFork0_#t~post33| 0), Black: 483#(and (<= |t_funThread2of3ForFork0_#t~post35| 1) (<= ~global~0 1)), 447#true, Black: 481#(and (= |t_funThread2of3ForFork0_#t~post33| 0) (<= ~global~0 1)), Black: 476#(<= ~global~0 1), 57#L952-4true, Black: 437#(and (= |t_funThread1of3ForFork0_#t~post33| 0) (<= ~global~0 1)), Black: 433#(<= |t_funThread1of3ForFork0_#t~post35| 1), Black: 432#(<= ~global~0 1), Black: 431#(= |t_funThread1of3ForFork0_#t~post33| 0), 163#L939-8true, Black: 439#(and (<= |t_funThread1of3ForFork0_#t~post35| 1) (<= ~global~0 1))]) [2022-11-18 20:24:13,777 INFO L383 tUnfolder$Statistics]: this new event has 151 ancestors and is cut-off event [2022-11-18 20:24:13,778 INFO L386 tUnfolder$Statistics]: existing Event has 151 ancestors and is cut-off event [2022-11-18 20:24:13,778 INFO L386 tUnfolder$Statistics]: existing Event has 151 ancestors and is cut-off event [2022-11-18 20:24:13,778 INFO L386 tUnfolder$Statistics]: existing Event has 151 ancestors and is cut-off event [2022-11-18 20:24:14,164 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([771] L939-7-->L939-8: Formula: (= |v_#pthreadsMutex_15| (store |v_#pthreadsMutex_16| |v_~#__global_lock~0.base_10| (store (select |v_#pthreadsMutex_16| |v_~#__global_lock~0.base_10|) |v_~#__global_lock~0.offset_10| 0))) InVars {#pthreadsMutex=|v_#pthreadsMutex_16|, ~#__global_lock~0.base=|v_~#__global_lock~0.base_10|, ~#__global_lock~0.offset=|v_~#__global_lock~0.offset_10|} OutVars{#pthreadsMutex=|v_#pthreadsMutex_15|, ~#__global_lock~0.base=|v_~#__global_lock~0.base_10|, ~#__global_lock~0.offset=|v_~#__global_lock~0.offset_10|} AuxVars[] AssignedVars[#pthreadsMutex][162], [t_funThread2of3ForFork0InUse, t_funThread3of3ForFork0NotInUse, 498#(and (<= |~#__global_lock~0.base| 3) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 451#(<= 1 ~global~0), 218#true, Black: 458#(and (<= 1 |t_funThread1of3ForFork0_#t~post35|) (<= 1 ~global~0)), Black: 200#(= |ULTIMATE.start_main_~i~1#1| 0), Black: 203#(and (= |ULTIMATE.start_main_~i~1#1| 0) (= 0 |ULTIMATE.start_main_#t~post37#1|)), Black: 464#(= ~global~0 0), 231#(<= 1 |ULTIMATE.start_main_~i~1#1|), Black: 465#(= |t_funThread2of3ForFork0_#t~post33| 0), Black: 467#(and (= ~global~0 0) (= |t_funThread2of3ForFork0_#t~post33| 0)), Black: 211#(= |t_funThread1of3ForFork0_#t~post33| 0), 472#true, Black: 210#(= ~global~0 0), Black: 213#(and (= ~global~0 0) (= |t_funThread1of3ForFork0_#t~post33| 0)), 428#true, Black: 477#(<= |t_funThread2of3ForFork0_#t~post35| 1), Black: 475#(= |t_funThread2of3ForFork0_#t~post33| 0), Black: 483#(and (<= |t_funThread2of3ForFork0_#t~post35| 1) (<= ~global~0 1)), 447#true, Black: 481#(and (= |t_funThread2of3ForFork0_#t~post33| 0) (<= ~global~0 1)), Black: 476#(<= ~global~0 1), 57#L952-4true, Black: 437#(and (= |t_funThread1of3ForFork0_#t~post33| 0) (<= ~global~0 1)), Black: 433#(<= |t_funThread1of3ForFork0_#t~post35| 1), Black: 432#(<= ~global~0 1), Black: 431#(= |t_funThread1of3ForFork0_#t~post33| 0), Black: 439#(and (<= |t_funThread1of3ForFork0_#t~post35| 1) (<= ~global~0 1)), 163#L939-8true, t_funThread1of3ForFork0NotInUse]) [2022-11-18 20:24:14,164 INFO L383 tUnfolder$Statistics]: this new event has 162 ancestors and is cut-off event [2022-11-18 20:24:14,164 INFO L386 tUnfolder$Statistics]: existing Event has 162 ancestors and is cut-off event [2022-11-18 20:24:14,164 INFO L386 tUnfolder$Statistics]: existing Event has 162 ancestors and is cut-off event [2022-11-18 20:24:14,164 INFO L386 tUnfolder$Statistics]: existing Event has 115 ancestors and is cut-off event [2022-11-18 20:24:14,540 INFO L130 PetriNetUnfolder]: 2690/21238 cut-off events. [2022-11-18 20:24:14,540 INFO L131 PetriNetUnfolder]: For 12418/12956 co-relation queries the response was YES. [2022-11-18 20:24:14,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32976 conditions, 21238 events. 2690/21238 cut-off events. For 12418/12956 co-relation queries the response was YES. Maximal size of possible extension queue 610. Compared 298116 event pairs, 1021 based on Foata normal form. 769/19475 useless extension candidates. Maximal degree in co-relation 25460. Up to 2888 conditions per place. [2022-11-18 20:24:14,674 INFO L137 encePairwiseOnDemand]: 207/217 looper letters, 53 selfloop transitions, 10 changer transitions 0/291 dead transitions. [2022-11-18 20:24:14,674 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 291 transitions, 1509 flow [2022-11-18 20:24:14,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:24:14,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 20:24:14,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 832 transitions. [2022-11-18 20:24:14,677 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7668202764976959 [2022-11-18 20:24:14,677 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 832 transitions. [2022-11-18 20:24:14,677 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 832 transitions. [2022-11-18 20:24:14,677 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:24:14,678 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 832 transitions. [2022-11-18 20:24:14,679 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 166.4) internal successors, (832), 5 states have internal predecessors, (832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:24:14,682 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 217.0) internal successors, (1302), 6 states have internal predecessors, (1302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:24:14,682 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 217.0) internal successors, (1302), 6 states have internal predecessors, (1302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:24:14,682 INFO L175 Difference]: Start difference. First operand has 243 places, 269 transitions, 1330 flow. Second operand 5 states and 832 transitions. [2022-11-18 20:24:14,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 291 transitions, 1509 flow [2022-11-18 20:24:14,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 291 transitions, 1479 flow, removed 7 selfloop flow, removed 3 redundant places. [2022-11-18 20:24:14,752 INFO L231 Difference]: Finished difference. Result has 245 places, 272 transitions, 1330 flow [2022-11-18 20:24:14,752 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=1286, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1330, PETRI_PLACES=245, PETRI_TRANSITIONS=272} [2022-11-18 20:24:14,753 INFO L288 CegarLoopForPetriNet]: 195 programPoint places, 50 predicate places. [2022-11-18 20:24:14,753 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 272 transitions, 1330 flow [2022-11-18 20:24:14,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 156.0) internal successors, (936), 6 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:24:14,754 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:24:14,754 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:24:14,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-18 20:24:14,754 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-18 20:24:14,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:24:14,755 INFO L85 PathProgramCache]: Analyzing trace with hash -1607445575, now seen corresponding path program 1 times [2022-11-18 20:24:14,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:24:14,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974039875] [2022-11-18 20:24:14,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:24:14,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:24:14,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:14,862 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 20:24:14,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:24:14,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974039875] [2022-11-18 20:24:14,863 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974039875] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:24:14,863 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:24:14,863 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:24:14,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922103127] [2022-11-18 20:24:14,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:24:14,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:24:14,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:24:14,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:24:14,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:24:14,867 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 217 [2022-11-18 20:24:14,868 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 272 transitions, 1330 flow. Second operand has 6 states, 6 states have (on average 164.83333333333334) internal successors, (989), 6 states have internal predecessors, (989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:24:14,869 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:24:14,869 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 217 [2022-11-18 20:24:14,869 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:24:18,775 INFO L130 PetriNetUnfolder]: 2854/19993 cut-off events. [2022-11-18 20:24:18,775 INFO L131 PetriNetUnfolder]: For 25043/25712 co-relation queries the response was YES. [2022-11-18 20:24:18,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36437 conditions, 19993 events. 2854/19993 cut-off events. For 25043/25712 co-relation queries the response was YES. Maximal size of possible extension queue 652. Compared 277572 event pairs, 1342 based on Foata normal form. 269/17900 useless extension candidates. Maximal degree in co-relation 28117. Up to 3630 conditions per place. [2022-11-18 20:24:18,933 INFO L137 encePairwiseOnDemand]: 204/217 looper letters, 141 selfloop transitions, 40 changer transitions 0/354 dead transitions. [2022-11-18 20:24:18,934 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 354 transitions, 2221 flow [2022-11-18 20:24:18,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 20:24:18,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 20:24:18,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1587 transitions. [2022-11-18 20:24:18,937 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8125960061443932 [2022-11-18 20:24:18,938 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1587 transitions. [2022-11-18 20:24:18,938 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1587 transitions. [2022-11-18 20:24:18,939 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:24:18,939 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1587 transitions. [2022-11-18 20:24:18,942 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 176.33333333333334) internal successors, (1587), 9 states have internal predecessors, (1587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:24:18,952 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 217.0) internal successors, (2170), 10 states have internal predecessors, (2170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:24:18,953 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 217.0) internal successors, (2170), 10 states have internal predecessors, (2170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:24:18,953 INFO L175 Difference]: Start difference. First operand has 245 places, 272 transitions, 1330 flow. Second operand 9 states and 1587 transitions. [2022-11-18 20:24:18,954 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 354 transitions, 2221 flow [2022-11-18 20:24:19,047 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 354 transitions, 2199 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 20:24:19,056 INFO L231 Difference]: Finished difference. Result has 252 places, 284 transitions, 1568 flow [2022-11-18 20:24:19,057 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=1310, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1568, PETRI_PLACES=252, PETRI_TRANSITIONS=284} [2022-11-18 20:24:19,058 INFO L288 CegarLoopForPetriNet]: 195 programPoint places, 57 predicate places. [2022-11-18 20:24:19,058 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 284 transitions, 1568 flow [2022-11-18 20:24:19,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 164.83333333333334) internal successors, (989), 6 states have internal predecessors, (989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:24:19,058 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:24:19,059 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:24:19,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-18 20:24:19,059 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-18 20:24:19,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:24:19,060 INFO L85 PathProgramCache]: Analyzing trace with hash 1133706090, now seen corresponding path program 1 times [2022-11-18 20:24:19,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:24:19,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592356095] [2022-11-18 20:24:19,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:24:19,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:24:19,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:19,148 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-18 20:24:19,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:24:19,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592356095] [2022-11-18 20:24:19,148 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592356095] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:24:19,149 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:24:19,149 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:24:19,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141349115] [2022-11-18 20:24:19,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:24:19,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:24:19,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:24:19,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:24:19,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:24:19,151 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 217 [2022-11-18 20:24:19,152 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 284 transitions, 1568 flow. Second operand has 4 states, 4 states have (on average 169.5) internal successors, (678), 4 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:24:19,152 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:24:19,152 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 217 [2022-11-18 20:24:19,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:24:21,480 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([855] t_funEXIT-->L952-4: Formula: (= (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem46#1_13| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ .cse0 (- 4294967296)))) v_t_funThread2of3ForFork0_thidvar0_4) InVars {t_funThread2of3ForFork0_thidvar0=v_t_funThread2of3ForFork0_thidvar0_4, ULTIMATE.start_main_#t~mem46#1=|v_ULTIMATE.start_main_#t~mem46#1_13|} OutVars{t_funThread2of3ForFork0_thidvar0=v_t_funThread2of3ForFork0_thidvar0_4, ULTIMATE.start_main_#t~mem46#1=|v_ULTIMATE.start_main_#t~mem46#1_13|} AuxVars[] AssignedVars[][169], [t_funThread1of3ForFork0InUse, t_funThread2of3ForFork0NotInUse, t_funThread3of3ForFork0NotInUse, Black: 507#(<= 1 ~global~0), Black: 514#(and (<= 1 ~global~0) (<= 1 |t_funThread2of3ForFork0_#t~post35|)), Black: 451#(<= 1 ~global~0), 498#(and (<= |~#__global_lock~0.base| 3) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), 218#true, Black: 458#(and (<= 1 |t_funThread1of3ForFork0_#t~post35|) (<= 1 ~global~0)), Black: 200#(= |ULTIMATE.start_main_~i~1#1| 0), Black: 203#(and (= |ULTIMATE.start_main_~i~1#1| 0) (= 0 |ULTIMATE.start_main_#t~post37#1|)), 231#(<= 1 |ULTIMATE.start_main_~i~1#1|), Black: 464#(= ~global~0 0), Black: 465#(= |t_funThread2of3ForFork0_#t~post33| 0), Black: 211#(= |t_funThread1of3ForFork0_#t~post33| 0), Black: 467#(and (= ~global~0 0) (= |t_funThread2of3ForFork0_#t~post33| 0)), Black: 210#(= ~global~0 0), 67#t_funENTRYtrue, Black: 213#(and (= ~global~0 0) (= |t_funThread1of3ForFork0_#t~post33| 0)), 476#(<= ~global~0 1), 428#true, Black: 477#(<= |t_funThread2of3ForFork0_#t~post35| 1), Black: 475#(= |t_funThread2of3ForFork0_#t~post33| 0), Black: 483#(and (<= |t_funThread2of3ForFork0_#t~post35| 1) (<= ~global~0 1)), 447#true, Black: 481#(and (= |t_funThread2of3ForFork0_#t~post33| 0) (<= ~global~0 1)), 57#L952-4true, 503#true, Black: 500#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), 518#true, Black: 437#(and (= |t_funThread1of3ForFork0_#t~post33| 0) (<= ~global~0 1)), Black: 433#(<= |t_funThread1of3ForFork0_#t~post35| 1), Black: 432#(<= ~global~0 1), Black: 431#(= |t_funThread1of3ForFork0_#t~post33| 0), Black: 439#(and (<= |t_funThread1of3ForFork0_#t~post35| 1) (<= ~global~0 1))]) [2022-11-18 20:24:21,480 INFO L383 tUnfolder$Statistics]: this new event has 150 ancestors and is cut-off event [2022-11-18 20:24:21,480 INFO L386 tUnfolder$Statistics]: existing Event has 112 ancestors and is cut-off event [2022-11-18 20:24:21,480 INFO L386 tUnfolder$Statistics]: existing Event has 102 ancestors and is cut-off event [2022-11-18 20:24:21,480 INFO L386 tUnfolder$Statistics]: existing Event has 103 ancestors and is cut-off event [2022-11-18 20:24:21,734 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([855] t_funEXIT-->L952-4: Formula: (= (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem46#1_13| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ .cse0 (- 4294967296)))) v_t_funThread2of3ForFork0_thidvar0_4) InVars {t_funThread2of3ForFork0_thidvar0=v_t_funThread2of3ForFork0_thidvar0_4, ULTIMATE.start_main_#t~mem46#1=|v_ULTIMATE.start_main_#t~mem46#1_13|} OutVars{t_funThread2of3ForFork0_thidvar0=v_t_funThread2of3ForFork0_thidvar0_4, ULTIMATE.start_main_#t~mem46#1=|v_ULTIMATE.start_main_#t~mem46#1_13|} AuxVars[] AssignedVars[][169], [t_funThread1of3ForFork0InUse, t_funThread2of3ForFork0NotInUse, 154#L939-3true, t_funThread3of3ForFork0NotInUse, Black: 507#(<= 1 ~global~0), Black: 514#(and (<= 1 ~global~0) (<= 1 |t_funThread2of3ForFork0_#t~post35|)), Black: 451#(<= 1 ~global~0), 218#true, Black: 458#(and (<= 1 |t_funThread1of3ForFork0_#t~post35|) (<= 1 ~global~0)), Black: 200#(= |ULTIMATE.start_main_~i~1#1| 0), Black: 203#(and (= |ULTIMATE.start_main_~i~1#1| 0) (= 0 |ULTIMATE.start_main_#t~post37#1|)), 231#(<= 1 |ULTIMATE.start_main_~i~1#1|), Black: 464#(= ~global~0 0), Black: 465#(= |t_funThread2of3ForFork0_#t~post33| 0), Black: 211#(= |t_funThread1of3ForFork0_#t~post33| 0), Black: 467#(and (= ~global~0 0) (= |t_funThread2of3ForFork0_#t~post33| 0)), Black: 210#(= ~global~0 0), Black: 213#(and (= ~global~0 0) (= |t_funThread1of3ForFork0_#t~post33| 0)), 476#(<= ~global~0 1), 428#true, Black: 477#(<= |t_funThread2of3ForFork0_#t~post35| 1), Black: 475#(= |t_funThread2of3ForFork0_#t~post33| 0), Black: 483#(and (<= |t_funThread2of3ForFork0_#t~post35| 1) (<= ~global~0 1)), 447#true, Black: 481#(and (= |t_funThread2of3ForFork0_#t~post33| 0) (<= ~global~0 1)), 57#L952-4true, 503#true, 500#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), 518#true, Black: 437#(and (= |t_funThread1of3ForFork0_#t~post33| 0) (<= ~global~0 1)), Black: 433#(<= |t_funThread1of3ForFork0_#t~post35| 1), Black: 432#(<= ~global~0 1), Black: 431#(= |t_funThread1of3ForFork0_#t~post33| 0), Black: 439#(and (<= |t_funThread1of3ForFork0_#t~post35| 1) (<= ~global~0 1))]) [2022-11-18 20:24:21,734 INFO L383 tUnfolder$Statistics]: this new event has 157 ancestors and is cut-off event [2022-11-18 20:24:21,734 INFO L386 tUnfolder$Statistics]: existing Event has 109 ancestors and is cut-off event [2022-11-18 20:24:21,734 INFO L386 tUnfolder$Statistics]: existing Event has 119 ancestors and is cut-off event [2022-11-18 20:24:21,734 INFO L386 tUnfolder$Statistics]: existing Event has 110 ancestors and is cut-off event [2022-11-18 20:24:22,123 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([855] t_funEXIT-->L952-4: Formula: (= (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem46#1_13| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ .cse0 (- 4294967296)))) v_t_funThread2of3ForFork0_thidvar0_4) InVars {t_funThread2of3ForFork0_thidvar0=v_t_funThread2of3ForFork0_thidvar0_4, ULTIMATE.start_main_#t~mem46#1=|v_ULTIMATE.start_main_#t~mem46#1_13|} OutVars{t_funThread2of3ForFork0_thidvar0=v_t_funThread2of3ForFork0_thidvar0_4, ULTIMATE.start_main_#t~mem46#1=|v_ULTIMATE.start_main_#t~mem46#1_13|} AuxVars[] AssignedVars[][169], [t_funThread1of3ForFork0InUse, t_funThread2of3ForFork0NotInUse, 114#L939-6true, t_funThread3of3ForFork0NotInUse, Black: 507#(<= 1 ~global~0), Black: 514#(and (<= 1 ~global~0) (<= 1 |t_funThread2of3ForFork0_#t~post35|)), Black: 451#(<= 1 ~global~0), 218#true, Black: 458#(and (<= 1 |t_funThread1of3ForFork0_#t~post35|) (<= 1 ~global~0)), Black: 200#(= |ULTIMATE.start_main_~i~1#1| 0), Black: 203#(and (= |ULTIMATE.start_main_~i~1#1| 0) (= 0 |ULTIMATE.start_main_#t~post37#1|)), 231#(<= 1 |ULTIMATE.start_main_~i~1#1|), Black: 464#(= ~global~0 0), Black: 465#(= |t_funThread2of3ForFork0_#t~post33| 0), Black: 211#(= |t_funThread1of3ForFork0_#t~post33| 0), Black: 467#(and (= ~global~0 0) (= |t_funThread2of3ForFork0_#t~post33| 0)), Black: 210#(= ~global~0 0), 472#true, Black: 213#(and (= ~global~0 0) (= |t_funThread1of3ForFork0_#t~post33| 0)), 428#true, Black: 477#(<= |t_funThread2of3ForFork0_#t~post35| 1), Black: 475#(= |t_funThread2of3ForFork0_#t~post33| 0), Black: 483#(and (<= |t_funThread2of3ForFork0_#t~post35| 1) (<= ~global~0 1)), 447#true, Black: 481#(and (= |t_funThread2of3ForFork0_#t~post33| 0) (<= ~global~0 1)), Black: 476#(<= ~global~0 1), 57#L952-4true, 503#true, 500#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 437#(and (= |t_funThread1of3ForFork0_#t~post33| 0) (<= ~global~0 1)), 518#true, Black: 433#(<= |t_funThread1of3ForFork0_#t~post35| 1), Black: 432#(<= ~global~0 1), Black: 431#(= |t_funThread1of3ForFork0_#t~post33| 0), Black: 439#(and (<= |t_funThread1of3ForFork0_#t~post35| 1) (<= ~global~0 1))]) [2022-11-18 20:24:22,123 INFO L383 tUnfolder$Statistics]: this new event has 159 ancestors and is cut-off event [2022-11-18 20:24:22,124 INFO L386 tUnfolder$Statistics]: existing Event has 122 ancestors and is cut-off event [2022-11-18 20:24:22,124 INFO L386 tUnfolder$Statistics]: existing Event has 112 ancestors and is cut-off event [2022-11-18 20:24:22,124 INFO L386 tUnfolder$Statistics]: existing Event has 113 ancestors and is cut-off event [2022-11-18 20:24:22,155 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([855] t_funEXIT-->L952-4: Formula: (= (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem46#1_13| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ .cse0 (- 4294967296)))) v_t_funThread2of3ForFork0_thidvar0_4) InVars {t_funThread2of3ForFork0_thidvar0=v_t_funThread2of3ForFork0_thidvar0_4, ULTIMATE.start_main_#t~mem46#1=|v_ULTIMATE.start_main_#t~mem46#1_13|} OutVars{t_funThread2of3ForFork0_thidvar0=v_t_funThread2of3ForFork0_thidvar0_4, ULTIMATE.start_main_#t~mem46#1=|v_ULTIMATE.start_main_#t~mem46#1_13|} AuxVars[] AssignedVars[][169], [t_funThread1of3ForFork0InUse, t_funThread2of3ForFork0NotInUse, t_funThread3of3ForFork0NotInUse, Black: 507#(<= 1 ~global~0), Black: 514#(and (<= 1 ~global~0) (<= 1 |t_funThread2of3ForFork0_#t~post35|)), 166#L939-16true, Black: 451#(<= 1 ~global~0), 498#(and (<= |~#__global_lock~0.base| 3) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), 218#true, Black: 458#(and (<= 1 |t_funThread1of3ForFork0_#t~post35|) (<= 1 ~global~0)), Black: 200#(= |ULTIMATE.start_main_~i~1#1| 0), Black: 203#(and (= |ULTIMATE.start_main_~i~1#1| 0) (= 0 |ULTIMATE.start_main_#t~post37#1|)), 231#(<= 1 |ULTIMATE.start_main_~i~1#1|), Black: 464#(= ~global~0 0), Black: 465#(= |t_funThread2of3ForFork0_#t~post33| 0), Black: 467#(and (= ~global~0 0) (= |t_funThread2of3ForFork0_#t~post33| 0)), Black: 211#(= |t_funThread1of3ForFork0_#t~post33| 0), 472#true, Black: 210#(= ~global~0 0), Black: 213#(and (= ~global~0 0) (= |t_funThread1of3ForFork0_#t~post33| 0)), 428#true, Black: 477#(<= |t_funThread2of3ForFork0_#t~post35| 1), Black: 475#(= |t_funThread2of3ForFork0_#t~post33| 0), Black: 483#(and (<= |t_funThread2of3ForFork0_#t~post35| 1) (<= ~global~0 1)), 447#true, Black: 481#(and (= |t_funThread2of3ForFork0_#t~post33| 0) (<= ~global~0 1)), Black: 476#(<= ~global~0 1), 57#L952-4true, 503#true, Black: 500#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), 518#true, Black: 437#(and (= |t_funThread1of3ForFork0_#t~post33| 0) (<= ~global~0 1)), Black: 433#(<= |t_funThread1of3ForFork0_#t~post35| 1), Black: 432#(<= ~global~0 1), Black: 431#(= |t_funThread1of3ForFork0_#t~post33| 0), Black: 439#(and (<= |t_funThread1of3ForFork0_#t~post35| 1) (<= ~global~0 1))]) [2022-11-18 20:24:22,155 INFO L383 tUnfolder$Statistics]: this new event has 169 ancestors and is cut-off event [2022-11-18 20:24:22,155 INFO L386 tUnfolder$Statistics]: existing Event has 122 ancestors and is cut-off event [2022-11-18 20:24:22,155 INFO L386 tUnfolder$Statistics]: existing Event has 122 ancestors and is cut-off event [2022-11-18 20:24:22,156 INFO L386 tUnfolder$Statistics]: existing Event has 122 ancestors and is cut-off event [2022-11-18 20:24:22,267 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([855] t_funEXIT-->L952-4: Formula: (= (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem46#1_13| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ .cse0 (- 4294967296)))) v_t_funThread2of3ForFork0_thidvar0_4) InVars {t_funThread2of3ForFork0_thidvar0=v_t_funThread2of3ForFork0_thidvar0_4, ULTIMATE.start_main_#t~mem46#1=|v_ULTIMATE.start_main_#t~mem46#1_13|} OutVars{t_funThread2of3ForFork0_thidvar0=v_t_funThread2of3ForFork0_thidvar0_4, ULTIMATE.start_main_#t~mem46#1=|v_ULTIMATE.start_main_#t~mem46#1_13|} AuxVars[] AssignedVars[][169], [t_funThread1of3ForFork0InUse, t_funThread2of3ForFork0NotInUse, t_funThread3of3ForFork0NotInUse, Black: 507#(<= 1 ~global~0), Black: 514#(and (<= 1 ~global~0) (<= 1 |t_funThread2of3ForFork0_#t~post35|)), Black: 451#(<= 1 ~global~0), 218#true, Black: 458#(and (<= 1 |t_funThread1of3ForFork0_#t~post35|) (<= 1 ~global~0)), Black: 200#(= |ULTIMATE.start_main_~i~1#1| 0), Black: 203#(and (= |ULTIMATE.start_main_~i~1#1| 0) (= 0 |ULTIMATE.start_main_#t~post37#1|)), 158#L939-13true, 231#(<= 1 |ULTIMATE.start_main_~i~1#1|), Black: 464#(= ~global~0 0), Black: 465#(= |t_funThread2of3ForFork0_#t~post33| 0), Black: 467#(and (= ~global~0 0) (= |t_funThread2of3ForFork0_#t~post33| 0)), Black: 211#(= |t_funThread1of3ForFork0_#t~post33| 0), Black: 210#(= ~global~0 0), 472#true, Black: 213#(and (= ~global~0 0) (= |t_funThread1of3ForFork0_#t~post33| 0)), 428#true, Black: 477#(<= |t_funThread2of3ForFork0_#t~post35| 1), Black: 475#(= |t_funThread2of3ForFork0_#t~post33| 0), Black: 483#(and (<= |t_funThread2of3ForFork0_#t~post35| 1) (<= ~global~0 1)), 447#true, Black: 481#(and (= |t_funThread2of3ForFork0_#t~post33| 0) (<= ~global~0 1)), Black: 476#(<= ~global~0 1), 57#L952-4true, 503#true, 500#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), 518#true, Black: 437#(and (= |t_funThread1of3ForFork0_#t~post33| 0) (<= ~global~0 1)), Black: 433#(<= |t_funThread1of3ForFork0_#t~post35| 1), Black: 432#(<= ~global~0 1), Black: 431#(= |t_funThread1of3ForFork0_#t~post33| 0), Black: 439#(and (<= |t_funThread1of3ForFork0_#t~post35| 1) (<= ~global~0 1))]) [2022-11-18 20:24:22,267 INFO L383 tUnfolder$Statistics]: this new event has 165 ancestors and is cut-off event [2022-11-18 20:24:22,267 INFO L386 tUnfolder$Statistics]: existing Event has 119 ancestors and is cut-off event [2022-11-18 20:24:22,267 INFO L386 tUnfolder$Statistics]: existing Event has 118 ancestors and is cut-off event [2022-11-18 20:24:22,267 INFO L386 tUnfolder$Statistics]: existing Event has 128 ancestors and is cut-off event [2022-11-18 20:24:22,579 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([855] t_funEXIT-->L952-4: Formula: (= (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem46#1_13| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ .cse0 (- 4294967296)))) v_t_funThread2of3ForFork0_thidvar0_4) InVars {t_funThread2of3ForFork0_thidvar0=v_t_funThread2of3ForFork0_thidvar0_4, ULTIMATE.start_main_#t~mem46#1=|v_ULTIMATE.start_main_#t~mem46#1_13|} OutVars{t_funThread2of3ForFork0_thidvar0=v_t_funThread2of3ForFork0_thidvar0_4, ULTIMATE.start_main_#t~mem46#1=|v_ULTIMATE.start_main_#t~mem46#1_13|} AuxVars[] AssignedVars[][169], [t_funThread1of3ForFork0InUse, t_funThread2of3ForFork0NotInUse, t_funThread3of3ForFork0NotInUse, Black: 507#(<= 1 ~global~0), Black: 514#(and (<= 1 ~global~0) (<= 1 |t_funThread2of3ForFork0_#t~post35|)), 166#L939-16true, Black: 451#(<= 1 ~global~0), 218#true, Black: 458#(and (<= 1 |t_funThread1of3ForFork0_#t~post35|) (<= 1 ~global~0)), Black: 200#(= |ULTIMATE.start_main_~i~1#1| 0), Black: 203#(and (= |ULTIMATE.start_main_~i~1#1| 0) (= 0 |ULTIMATE.start_main_#t~post37#1|)), 231#(<= 1 |ULTIMATE.start_main_~i~1#1|), Black: 464#(= ~global~0 0), Black: 465#(= |t_funThread2of3ForFork0_#t~post33| 0), Black: 467#(and (= ~global~0 0) (= |t_funThread2of3ForFork0_#t~post33| 0)), Black: 211#(= |t_funThread1of3ForFork0_#t~post33| 0), Black: 210#(= ~global~0 0), 472#true, Black: 213#(and (= ~global~0 0) (= |t_funThread1of3ForFork0_#t~post33| 0)), 428#true, Black: 477#(<= |t_funThread2of3ForFork0_#t~post35| 1), Black: 475#(= |t_funThread2of3ForFork0_#t~post33| 0), Black: 483#(and (<= |t_funThread2of3ForFork0_#t~post35| 1) (<= ~global~0 1)), 447#true, Black: 481#(and (= |t_funThread2of3ForFork0_#t~post33| 0) (<= ~global~0 1)), Black: 476#(<= ~global~0 1), 57#L952-4true, 503#true, 500#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 437#(and (= |t_funThread1of3ForFork0_#t~post33| 0) (<= ~global~0 1)), 518#true, Black: 433#(<= |t_funThread1of3ForFork0_#t~post35| 1), Black: 432#(<= ~global~0 1), Black: 431#(= |t_funThread1of3ForFork0_#t~post33| 0), Black: 439#(and (<= |t_funThread1of3ForFork0_#t~post35| 1) (<= ~global~0 1))]) [2022-11-18 20:24:22,579 INFO L383 tUnfolder$Statistics]: this new event has 168 ancestors and is cut-off event [2022-11-18 20:24:22,579 INFO L386 tUnfolder$Statistics]: existing Event has 131 ancestors and is cut-off event [2022-11-18 20:24:22,580 INFO L386 tUnfolder$Statistics]: existing Event has 122 ancestors and is cut-off event [2022-11-18 20:24:22,580 INFO L386 tUnfolder$Statistics]: existing Event has 121 ancestors and is cut-off event [2022-11-18 20:24:22,587 INFO L381 tUnfolder$Statistics]: inserting event number 5 for the transition-marking pair ([855] t_funEXIT-->L952-4: Formula: (= (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem46#1_13| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ .cse0 (- 4294967296)))) v_t_funThread2of3ForFork0_thidvar0_4) InVars {t_funThread2of3ForFork0_thidvar0=v_t_funThread2of3ForFork0_thidvar0_4, ULTIMATE.start_main_#t~mem46#1=|v_ULTIMATE.start_main_#t~mem46#1_13|} OutVars{t_funThread2of3ForFork0_thidvar0=v_t_funThread2of3ForFork0_thidvar0_4, ULTIMATE.start_main_#t~mem46#1=|v_ULTIMATE.start_main_#t~mem46#1_13|} AuxVars[] AssignedVars[][169], [t_funThread1of3ForFork0InUse, t_funThread2of3ForFork0NotInUse, t_funThread3of3ForFork0NotInUse, Black: 507#(<= 1 ~global~0), Black: 514#(and (<= 1 ~global~0) (<= 1 |t_funThread2of3ForFork0_#t~post35|)), 166#L939-16true, Black: 451#(<= 1 ~global~0), 218#true, 498#(and (<= |~#__global_lock~0.base| 3) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 458#(and (<= 1 |t_funThread1of3ForFork0_#t~post35|) (<= 1 ~global~0)), Black: 200#(= |ULTIMATE.start_main_~i~1#1| 0), Black: 203#(and (= |ULTIMATE.start_main_~i~1#1| 0) (= 0 |ULTIMATE.start_main_#t~post37#1|)), 231#(<= 1 |ULTIMATE.start_main_~i~1#1|), Black: 464#(= ~global~0 0), Black: 465#(= |t_funThread2of3ForFork0_#t~post33| 0), Black: 211#(= |t_funThread1of3ForFork0_#t~post33| 0), Black: 467#(and (= ~global~0 0) (= |t_funThread2of3ForFork0_#t~post33| 0)), Black: 210#(= ~global~0 0), 472#true, Black: 213#(and (= ~global~0 0) (= |t_funThread1of3ForFork0_#t~post33| 0)), 428#true, Black: 477#(<= |t_funThread2of3ForFork0_#t~post35| 1), Black: 475#(= |t_funThread2of3ForFork0_#t~post33| 0), Black: 483#(and (<= |t_funThread2of3ForFork0_#t~post35| 1) (<= ~global~0 1)), 447#true, Black: 481#(and (= |t_funThread2of3ForFork0_#t~post33| 0) (<= ~global~0 1)), Black: 476#(<= ~global~0 1), 57#L952-4true, 503#true, Black: 500#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 437#(and (= |t_funThread1of3ForFork0_#t~post33| 0) (<= ~global~0 1)), 518#true, Black: 433#(<= |t_funThread1of3ForFork0_#t~post35| 1), Black: 432#(<= ~global~0 1), Black: 431#(= |t_funThread1of3ForFork0_#t~post33| 0), Black: 439#(and (<= |t_funThread1of3ForFork0_#t~post35| 1) (<= ~global~0 1))]) [2022-11-18 20:24:22,588 INFO L383 tUnfolder$Statistics]: this new event has 169 ancestors and is cut-off event [2022-11-18 20:24:22,588 INFO L386 tUnfolder$Statistics]: existing Event has 169 ancestors and is cut-off event [2022-11-18 20:24:22,588 INFO L386 tUnfolder$Statistics]: existing Event has 122 ancestors and is cut-off event [2022-11-18 20:24:22,588 INFO L386 tUnfolder$Statistics]: existing Event has 122 ancestors and is cut-off event [2022-11-18 20:24:22,588 INFO L386 tUnfolder$Statistics]: existing Event has 122 ancestors and is cut-off event [2022-11-18 20:24:22,667 INFO L130 PetriNetUnfolder]: 2447/17927 cut-off events. [2022-11-18 20:24:22,667 INFO L131 PetriNetUnfolder]: For 26028/26691 co-relation queries the response was YES. [2022-11-18 20:24:22,762 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33525 conditions, 17927 events. 2447/17927 cut-off events. For 26028/26691 co-relation queries the response was YES. Maximal size of possible extension queue 607. Compared 244663 event pairs, 1405 based on Foata normal form. 224/15816 useless extension candidates. Maximal degree in co-relation 25649. Up to 3898 conditions per place. [2022-11-18 20:24:22,825 INFO L137 encePairwiseOnDemand]: 209/217 looper letters, 136 selfloop transitions, 12 changer transitions 0/330 dead transitions. [2022-11-18 20:24:22,825 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 330 transitions, 2267 flow [2022-11-18 20:24:22,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:24:22,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 20:24:22,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 900 transitions. [2022-11-18 20:24:22,828 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8294930875576036 [2022-11-18 20:24:22,828 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 900 transitions. [2022-11-18 20:24:22,828 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 900 transitions. [2022-11-18 20:24:22,829 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:24:22,829 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 900 transitions. [2022-11-18 20:24:22,831 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 180.0) internal successors, (900), 5 states have internal predecessors, (900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:24:22,833 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 217.0) internal successors, (1302), 6 states have internal predecessors, (1302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:24:22,834 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 217.0) internal successors, (1302), 6 states have internal predecessors, (1302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:24:22,834 INFO L175 Difference]: Start difference. First operand has 252 places, 284 transitions, 1568 flow. Second operand 5 states and 900 transitions. [2022-11-18 20:24:22,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 330 transitions, 2267 flow [2022-11-18 20:24:22,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 330 transitions, 2204 flow, removed 7 selfloop flow, removed 4 redundant places. [2022-11-18 20:24:22,931 INFO L231 Difference]: Finished difference. Result has 255 places, 288 transitions, 1600 flow [2022-11-18 20:24:22,931 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=1520, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1600, PETRI_PLACES=255, PETRI_TRANSITIONS=288} [2022-11-18 20:24:22,932 INFO L288 CegarLoopForPetriNet]: 195 programPoint places, 60 predicate places. [2022-11-18 20:24:22,932 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 288 transitions, 1600 flow [2022-11-18 20:24:22,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 169.5) internal successors, (678), 4 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:24:22,933 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:24:22,933 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:24:22,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-18 20:24:22,934 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-18 20:24:22,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:24:22,935 INFO L85 PathProgramCache]: Analyzing trace with hash -1171384378, now seen corresponding path program 1 times [2022-11-18 20:24:22,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:24:22,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065099923] [2022-11-18 20:24:22,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:24:22,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:24:22,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:24:22,968 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 20:24:22,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:24:23,010 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 20:24:23,014 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-18 20:24:23,014 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 21 remaining) [2022-11-18 20:24:23,015 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 21 remaining) [2022-11-18 20:24:23,015 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 21 remaining) [2022-11-18 20:24:23,015 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 21 remaining) [2022-11-18 20:24:23,016 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 21 remaining) [2022-11-18 20:24:23,016 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 21 remaining) [2022-11-18 20:24:23,016 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 21 remaining) [2022-11-18 20:24:23,016 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 21 remaining) [2022-11-18 20:24:23,017 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 21 remaining) [2022-11-18 20:24:23,017 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 21 remaining) [2022-11-18 20:24:23,017 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 21 remaining) [2022-11-18 20:24:23,017 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 21 remaining) [2022-11-18 20:24:23,018 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 21 remaining) [2022-11-18 20:24:23,018 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 21 remaining) [2022-11-18 20:24:23,018 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 21 remaining) [2022-11-18 20:24:23,018 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 21 remaining) [2022-11-18 20:24:23,019 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 21 remaining) [2022-11-18 20:24:23,019 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 21 remaining) [2022-11-18 20:24:23,019 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 21 remaining) [2022-11-18 20:24:23,019 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 21 remaining) [2022-11-18 20:24:23,020 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 21 remaining) [2022-11-18 20:24:23,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-18 20:24:23,020 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:24:23,024 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-18 20:24:23,024 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-11-18 20:24:23,068 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-11-18 20:24:23,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 228 places, 255 transitions, 554 flow [2022-11-18 20:24:23,242 INFO L130 PetriNetUnfolder]: 96/708 cut-off events. [2022-11-18 20:24:23,243 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2022-11-18 20:24:23,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 763 conditions, 708 events. 96/708 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2795 event pairs, 6 based on Foata normal form. 0/558 useless extension candidates. Maximal degree in co-relation 484. Up to 32 conditions per place. [2022-11-18 20:24:23,250 INFO L82 GeneralOperation]: Start removeDead. Operand has 228 places, 255 transitions, 554 flow [2022-11-18 20:24:23,259 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 228 places, 255 transitions, 554 flow [2022-11-18 20:24:23,260 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:24:23,261 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;@5bfa071d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:24:23,261 INFO L358 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2022-11-18 20:24:23,269 INFO L130 PetriNetUnfolder]: 5/77 cut-off events. [2022-11-18 20:24:23,269 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 20:24:23,270 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:24:23,270 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] [2022-11-18 20:24:23,270 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-18 20:24:23,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:24:23,271 INFO L85 PathProgramCache]: Analyzing trace with hash 62287946, now seen corresponding path program 1 times [2022-11-18 20:24:23,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:24:23,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143768694] [2022-11-18 20:24:23,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:24:23,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:24:23,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:23,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:24:23,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:24:23,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143768694] [2022-11-18 20:24:23,337 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143768694] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:24:23,337 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:24:23,337 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:24:23,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751797561] [2022-11-18 20:24:23,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:24:23,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:24:23,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:24:23,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:24:23,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:24:23,342 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 205 out of 255 [2022-11-18 20:24:23,343 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 255 transitions, 554 flow. Second operand has 4 states, 4 states have (on average 206.75) internal successors, (827), 4 states have internal predecessors, (827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:24:23,344 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:24:23,344 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 205 of 255 [2022-11-18 20:24:23,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:24:23,597 INFO L130 PetriNetUnfolder]: 32/616 cut-off events. [2022-11-18 20:24:23,598 INFO L131 PetriNetUnfolder]: For 165/337 co-relation queries the response was YES. [2022-11-18 20:24:23,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 750 conditions, 616 events. 32/616 cut-off events. For 165/337 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2524 event pairs, 6 based on Foata normal form. 629/1157 useless extension candidates. Maximal degree in co-relation 465. Up to 71 conditions per place. [2022-11-18 20:24:23,607 INFO L137 encePairwiseOnDemand]: 219/255 looper letters, 23 selfloop transitions, 4 changer transitions 0/232 dead transitions. [2022-11-18 20:24:23,607 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 232 transitions, 562 flow [2022-11-18 20:24:23,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:24:23,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 20:24:23,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1103 transitions. [2022-11-18 20:24:23,612 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8650980392156863 [2022-11-18 20:24:23,612 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1103 transitions. [2022-11-18 20:24:23,612 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1103 transitions. [2022-11-18 20:24:23,613 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:24:23,613 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1103 transitions. [2022-11-18 20:24:23,616 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 220.6) internal successors, (1103), 5 states have internal predecessors, (1103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:24:23,619 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 255.0) internal successors, (1530), 6 states have internal predecessors, (1530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:24:23,620 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 255.0) internal successors, (1530), 6 states have internal predecessors, (1530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:24:23,620 INFO L175 Difference]: Start difference. First operand has 228 places, 255 transitions, 554 flow. Second operand 5 states and 1103 transitions. [2022-11-18 20:24:23,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 232 transitions, 562 flow [2022-11-18 20:24:23,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 232 transitions, 562 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 20:24:23,627 INFO L231 Difference]: Finished difference. Result has 234 places, 228 transitions, 526 flow [2022-11-18 20:24:23,629 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=494, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=526, PETRI_PLACES=234, PETRI_TRANSITIONS=228} [2022-11-18 20:24:23,632 INFO L288 CegarLoopForPetriNet]: 228 programPoint places, 6 predicate places. [2022-11-18 20:24:23,632 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 228 transitions, 526 flow [2022-11-18 20:24:23,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 206.75) internal successors, (827), 4 states have internal predecessors, (827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:24:23,633 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:24:23,633 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] [2022-11-18 20:24:23,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-18 20:24:23,634 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-18 20:24:23,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:24:23,634 INFO L85 PathProgramCache]: Analyzing trace with hash -1245673827, now seen corresponding path program 1 times [2022-11-18 20:24:23,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:24:23,637 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801341838] [2022-11-18 20:24:23,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:24:23,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:24:23,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:23,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:24:23,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:24:23,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801341838] [2022-11-18 20:24:23,721 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801341838] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:24:23,721 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:24:23,721 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:24:23,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709433485] [2022-11-18 20:24:23,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:24:23,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:24:23,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:24:23,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:24:23,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:24:23,726 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 255 [2022-11-18 20:24:23,727 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 228 transitions, 526 flow. Second operand has 4 states, 4 states have (on average 195.0) internal successors, (780), 4 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:24:23,727 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:24:23,728 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 255 [2022-11-18 20:24:23,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:24:33,565 INFO L130 PetriNetUnfolder]: 15565/55740 cut-off events. [2022-11-18 20:24:33,565 INFO L131 PetriNetUnfolder]: For 11489/12591 co-relation queries the response was YES. [2022-11-18 20:24:33,906 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81161 conditions, 55740 events. 15565/55740 cut-off events. For 11489/12591 co-relation queries the response was YES. Maximal size of possible extension queue 2220. Compared 804982 event pairs, 9757 based on Foata normal form. 0/48272 useless extension candidates. Maximal degree in co-relation 81087. Up to 15210 conditions per place. [2022-11-18 20:24:34,209 INFO L137 encePairwiseOnDemand]: 246/255 looper letters, 68 selfloop transitions, 10 changer transitions 0/275 dead transitions. [2022-11-18 20:24:34,209 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 275 transitions, 848 flow [2022-11-18 20:24:34,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:24:34,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 20:24:34,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1052 transitions. [2022-11-18 20:24:34,212 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8250980392156863 [2022-11-18 20:24:34,212 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1052 transitions. [2022-11-18 20:24:34,212 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1052 transitions. [2022-11-18 20:24:34,212 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:24:34,213 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1052 transitions. [2022-11-18 20:24:34,215 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 210.4) internal successors, (1052), 5 states have internal predecessors, (1052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:24:34,217 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 255.0) internal successors, (1530), 6 states have internal predecessors, (1530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:24:34,218 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 255.0) internal successors, (1530), 6 states have internal predecessors, (1530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:24:34,218 INFO L175 Difference]: Start difference. First operand has 234 places, 228 transitions, 526 flow. Second operand 5 states and 1052 transitions. [2022-11-18 20:24:34,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 275 transitions, 848 flow [2022-11-18 20:24:34,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 275 transitions, 846 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 20:24:34,230 INFO L231 Difference]: Finished difference. Result has 240 places, 237 transitions, 603 flow [2022-11-18 20:24:34,231 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=524, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=603, PETRI_PLACES=240, PETRI_TRANSITIONS=237} [2022-11-18 20:24:34,232 INFO L288 CegarLoopForPetriNet]: 228 programPoint places, 12 predicate places. [2022-11-18 20:24:34,232 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 237 transitions, 603 flow [2022-11-18 20:24:34,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 195.0) internal successors, (780), 4 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:24:34,233 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:24:34,233 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:24:34,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-11-18 20:24:34,233 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-18 20:24:34,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:24:34,234 INFO L85 PathProgramCache]: Analyzing trace with hash 347592438, now seen corresponding path program 1 times [2022-11-18 20:24:34,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:24:34,234 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628299385] [2022-11-18 20:24:34,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:24:34,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:24:34,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:34,281 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:24:34,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:24:34,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628299385] [2022-11-18 20:24:34,282 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628299385] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:24:34,282 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:24:34,282 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:24:34,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535510145] [2022-11-18 20:24:34,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:24:34,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:24:34,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:24:34,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:24:34,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:24:34,285 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 205 out of 255 [2022-11-18 20:24:34,286 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 237 transitions, 603 flow. Second operand has 4 states, 4 states have (on average 208.75) internal successors, (835), 4 states have internal predecessors, (835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:24:34,286 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:24:34,286 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 205 of 255 [2022-11-18 20:24:34,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:24:34,773 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1146] t_funEXIT-->L952-4: Formula: (= v_t_funThread1of4ForFork0_thidvar0_4 (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem46#1_17| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ .cse0 (- 4294967296))))) InVars {ULTIMATE.start_main_#t~mem46#1=|v_ULTIMATE.start_main_#t~mem46#1_17|, t_funThread1of4ForFork0_thidvar0=v_t_funThread1of4ForFork0_thidvar0_4} OutVars{ULTIMATE.start_main_#t~mem46#1=|v_ULTIMATE.start_main_#t~mem46#1_17|, t_funThread1of4ForFork0_thidvar0=v_t_funThread1of4ForFork0_thidvar0_4} AuxVars[] AssignedVars[][145], [t_funThread2of4ForFork0InUse, t_funThread3of4ForFork0NotInUse, t_funThread4of4ForFork0NotInUse, 251#true, 149#L952-4true, Black: 236#(and (= |ULTIMATE.start_main_~i~1#1| 0) (= 0 |ULTIMATE.start_main_#t~post37#1|)), Black: 233#(= |ULTIMATE.start_main_~i~1#1| 0), Black: 234#(= 0 |ULTIMATE.start_main_#t~post37#1|), 241#true, Black: 243#(= ~global~0 0), Black: 244#(= |t_funThread1of4ForFork0_#t~post33| 0), 31#t_funENTRYtrue, Black: 246#(and (= |t_funThread1of4ForFork0_#t~post33| 0) (= ~global~0 0)), t_funThread1of4ForFork0NotInUse]) [2022-11-18 20:24:34,773 INFO L383 tUnfolder$Statistics]: this new event has 196 ancestors and is cut-off event [2022-11-18 20:24:34,773 INFO L386 tUnfolder$Statistics]: existing Event has 149 ancestors and is cut-off event [2022-11-18 20:24:34,773 INFO L386 tUnfolder$Statistics]: existing Event has 149 ancestors and is cut-off event [2022-11-18 20:24:34,773 INFO L386 tUnfolder$Statistics]: existing Event has 102 ancestors and is cut-off event [2022-11-18 20:24:34,808 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1146] t_funEXIT-->L952-4: Formula: (= v_t_funThread1of4ForFork0_thidvar0_4 (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem46#1_17| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ .cse0 (- 4294967296))))) InVars {ULTIMATE.start_main_#t~mem46#1=|v_ULTIMATE.start_main_#t~mem46#1_17|, t_funThread1of4ForFork0_thidvar0=v_t_funThread1of4ForFork0_thidvar0_4} OutVars{ULTIMATE.start_main_#t~mem46#1=|v_ULTIMATE.start_main_#t~mem46#1_17|, t_funThread1of4ForFork0_thidvar0=v_t_funThread1of4ForFork0_thidvar0_4} AuxVars[] AssignedVars[][145], [t_funThread2of4ForFork0InUse, t_funThread3of4ForFork0NotInUse, t_funThread4of4ForFork0NotInUse, 251#true, 149#L952-4true, Black: 236#(and (= |ULTIMATE.start_main_~i~1#1| 0) (= 0 |ULTIMATE.start_main_#t~post37#1|)), Black: 233#(= |ULTIMATE.start_main_~i~1#1| 0), Black: 234#(= 0 |ULTIMATE.start_main_#t~post37#1|), 241#true, Black: 243#(= ~global~0 0), Black: 244#(= |t_funThread1of4ForFork0_#t~post33| 0), Black: 246#(and (= |t_funThread1of4ForFork0_#t~post33| 0) (= ~global~0 0)), t_funThread1of4ForFork0NotInUse, 92#L939-6true]) [2022-11-18 20:24:34,808 INFO L383 tUnfolder$Statistics]: this new event has 206 ancestors and is cut-off event [2022-11-18 20:24:34,808 INFO L386 tUnfolder$Statistics]: existing Event has 206 ancestors and is cut-off event [2022-11-18 20:24:34,808 INFO L386 tUnfolder$Statistics]: existing Event has 159 ancestors and is cut-off event [2022-11-18 20:24:34,808 INFO L386 tUnfolder$Statistics]: existing Event has 112 ancestors and is cut-off event [2022-11-18 20:24:34,826 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1146] t_funEXIT-->L952-4: Formula: (= v_t_funThread1of4ForFork0_thidvar0_4 (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem46#1_17| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ .cse0 (- 4294967296))))) InVars {ULTIMATE.start_main_#t~mem46#1=|v_ULTIMATE.start_main_#t~mem46#1_17|, t_funThread1of4ForFork0_thidvar0=v_t_funThread1of4ForFork0_thidvar0_4} OutVars{ULTIMATE.start_main_#t~mem46#1=|v_ULTIMATE.start_main_#t~mem46#1_17|, t_funThread1of4ForFork0_thidvar0=v_t_funThread1of4ForFork0_thidvar0_4} AuxVars[] AssignedVars[][145], [t_funThread2of4ForFork0NotInUse, t_funThread3of4ForFork0NotInUse, t_funThread4of4ForFork0NotInUse, 251#true, 149#L952-4true, Black: 236#(and (= |ULTIMATE.start_main_~i~1#1| 0) (= 0 |ULTIMATE.start_main_#t~post37#1|)), Black: 233#(= |ULTIMATE.start_main_~i~1#1| 0), Black: 234#(= 0 |ULTIMATE.start_main_#t~post37#1|), 241#true, Black: 243#(= ~global~0 0), Black: 244#(= |t_funThread1of4ForFork0_#t~post33| 0), Black: 246#(and (= |t_funThread1of4ForFork0_#t~post33| 0) (= ~global~0 0)), t_funThread1of4ForFork0NotInUse]) [2022-11-18 20:24:34,826 INFO L383 tUnfolder$Statistics]: this new event has 231 ancestors and is cut-off event [2022-11-18 20:24:34,826 INFO L386 tUnfolder$Statistics]: existing Event has 137 ancestors and is cut-off event [2022-11-18 20:24:34,826 INFO L386 tUnfolder$Statistics]: existing Event has 90 ancestors and is cut-off event [2022-11-18 20:24:34,826 INFO L386 tUnfolder$Statistics]: existing Event has 137 ancestors and is cut-off event [2022-11-18 20:24:34,829 INFO L130 PetriNetUnfolder]: 176/2731 cut-off events. [2022-11-18 20:24:34,829 INFO L131 PetriNetUnfolder]: For 1049/2553 co-relation queries the response was YES. [2022-11-18 20:24:34,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3422 conditions, 2731 events. 176/2731 cut-off events. For 1049/2553 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 23285 event pairs, 64 based on Foata normal form. 108/2418 useless extension candidates. Maximal degree in co-relation 2653. Up to 205 conditions per place. [2022-11-18 20:24:34,865 INFO L137 encePairwiseOnDemand]: 249/255 looper letters, 15 selfloop transitions, 8 changer transitions 0/237 dead transitions. [2022-11-18 20:24:34,865 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 237 transitions, 647 flow [2022-11-18 20:24:34,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:24:34,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 20:24:34,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1046 transitions. [2022-11-18 20:24:34,867 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8203921568627451 [2022-11-18 20:24:34,867 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1046 transitions. [2022-11-18 20:24:34,868 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1046 transitions. [2022-11-18 20:24:34,868 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:24:34,868 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1046 transitions. [2022-11-18 20:24:34,870 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 209.2) internal successors, (1046), 5 states have internal predecessors, (1046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:24:34,872 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 255.0) internal successors, (1530), 6 states have internal predecessors, (1530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:24:34,873 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 255.0) internal successors, (1530), 6 states have internal predecessors, (1530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:24:34,873 INFO L175 Difference]: Start difference. First operand has 240 places, 237 transitions, 603 flow. Second operand 5 states and 1046 transitions. [2022-11-18 20:24:34,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 237 transitions, 647 flow [2022-11-18 20:24:34,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 237 transitions, 642 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 20:24:34,880 INFO L231 Difference]: Finished difference. Result has 243 places, 237 transitions, 618 flow [2022-11-18 20:24:34,881 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=594, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=618, PETRI_PLACES=243, PETRI_TRANSITIONS=237} [2022-11-18 20:24:34,881 INFO L288 CegarLoopForPetriNet]: 228 programPoint places, 15 predicate places. [2022-11-18 20:24:34,882 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 237 transitions, 618 flow [2022-11-18 20:24:34,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 208.75) internal successors, (835), 4 states have internal predecessors, (835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:24:34,882 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:24:34,882 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:24:34,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-11-18 20:24:34,883 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-18 20:24:34,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:24:34,884 INFO L85 PathProgramCache]: Analyzing trace with hash -2109535375, now seen corresponding path program 1 times [2022-11-18 20:24:34,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:24:34,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855851175] [2022-11-18 20:24:34,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:24:34,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:24:34,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:34,967 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:24:34,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:24:34,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855851175] [2022-11-18 20:24:34,967 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855851175] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:24:34,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [537666224] [2022-11-18 20:24:34,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:24:34,968 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:24:34,968 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_803911e8-fee0-4c39-96d0-ba260a939a57/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:24:34,969 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_803911e8-fee0-4c39-96d0-ba260a939a57/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:24:34,980 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_803911e8-fee0-4c39-96d0-ba260a939a57/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 20:24:35,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:35,088 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 20:24:35,092 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:24:35,159 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:24:35,159 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:24:35,159 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [537666224] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:24:35,159 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:24:35,160 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-18 20:24:35,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330516274] [2022-11-18 20:24:35,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:24:35,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:24:35,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:24:35,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:24:35,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:24:35,163 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 205 out of 255 [2022-11-18 20:24:35,164 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 237 transitions, 618 flow. Second operand has 6 states, 6 states have (on average 207.66666666666666) internal successors, (1246), 6 states have internal predecessors, (1246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:24:35,164 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:24:35,164 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 205 of 255 [2022-11-18 20:24:35,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:24:35,856 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1146] t_funEXIT-->L952-4: Formula: (= v_t_funThread1of4ForFork0_thidvar0_4 (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem46#1_17| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ .cse0 (- 4294967296))))) InVars {ULTIMATE.start_main_#t~mem46#1=|v_ULTIMATE.start_main_#t~mem46#1_17|, t_funThread1of4ForFork0_thidvar0=v_t_funThread1of4ForFork0_thidvar0_4} OutVars{ULTIMATE.start_main_#t~mem46#1=|v_ULTIMATE.start_main_#t~mem46#1_17|, t_funThread1of4ForFork0_thidvar0=v_t_funThread1of4ForFork0_thidvar0_4} AuxVars[] AssignedVars[][147], [t_funThread2of4ForFork0InUse, t_funThread3of4ForFork0NotInUse, t_funThread4of4ForFork0NotInUse, 251#true, 149#L952-4true, Black: 236#(and (= |ULTIMATE.start_main_~i~1#1| 0) (= 0 |ULTIMATE.start_main_#t~post37#1|)), Black: 233#(= |ULTIMATE.start_main_~i~1#1| 0), Black: 234#(= 0 |ULTIMATE.start_main_#t~post37#1|), Black: 243#(= ~global~0 0), Black: 244#(= |t_funThread1of4ForFork0_#t~post33| 0), 31#t_funENTRYtrue, Black: 246#(and (= |t_funThread1of4ForFork0_#t~post33| 0) (= ~global~0 0)), 264#(<= 1 |ULTIMATE.start_main_~i~1#1|), t_funThread1of4ForFork0NotInUse]) [2022-11-18 20:24:35,856 INFO L383 tUnfolder$Statistics]: this new event has 196 ancestors and is cut-off event [2022-11-18 20:24:35,856 INFO L386 tUnfolder$Statistics]: existing Event has 149 ancestors and is cut-off event [2022-11-18 20:24:35,856 INFO L386 tUnfolder$Statistics]: existing Event has 149 ancestors and is cut-off event [2022-11-18 20:24:35,856 INFO L386 tUnfolder$Statistics]: existing Event has 102 ancestors and is cut-off event [2022-11-18 20:24:35,889 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1146] t_funEXIT-->L952-4: Formula: (= v_t_funThread1of4ForFork0_thidvar0_4 (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem46#1_17| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ .cse0 (- 4294967296))))) InVars {ULTIMATE.start_main_#t~mem46#1=|v_ULTIMATE.start_main_#t~mem46#1_17|, t_funThread1of4ForFork0_thidvar0=v_t_funThread1of4ForFork0_thidvar0_4} OutVars{ULTIMATE.start_main_#t~mem46#1=|v_ULTIMATE.start_main_#t~mem46#1_17|, t_funThread1of4ForFork0_thidvar0=v_t_funThread1of4ForFork0_thidvar0_4} AuxVars[] AssignedVars[][147], [t_funThread2of4ForFork0InUse, t_funThread3of4ForFork0NotInUse, t_funThread4of4ForFork0NotInUse, 251#true, 149#L952-4true, Black: 236#(and (= |ULTIMATE.start_main_~i~1#1| 0) (= 0 |ULTIMATE.start_main_#t~post37#1|)), Black: 233#(= |ULTIMATE.start_main_~i~1#1| 0), Black: 234#(= 0 |ULTIMATE.start_main_#t~post37#1|), Black: 243#(= ~global~0 0), Black: 244#(= |t_funThread1of4ForFork0_#t~post33| 0), Black: 246#(and (= |t_funThread1of4ForFork0_#t~post33| 0) (= ~global~0 0)), 264#(<= 1 |ULTIMATE.start_main_~i~1#1|), 92#L939-6true, t_funThread1of4ForFork0NotInUse]) [2022-11-18 20:24:35,890 INFO L383 tUnfolder$Statistics]: this new event has 206 ancestors and is cut-off event [2022-11-18 20:24:35,890 INFO L386 tUnfolder$Statistics]: existing Event has 206 ancestors and is cut-off event [2022-11-18 20:24:35,890 INFO L386 tUnfolder$Statistics]: existing Event has 159 ancestors and is cut-off event [2022-11-18 20:24:35,890 INFO L386 tUnfolder$Statistics]: existing Event has 112 ancestors and is cut-off event [2022-11-18 20:24:35,907 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1146] t_funEXIT-->L952-4: Formula: (= v_t_funThread1of4ForFork0_thidvar0_4 (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem46#1_17| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ .cse0 (- 4294967296))))) InVars {ULTIMATE.start_main_#t~mem46#1=|v_ULTIMATE.start_main_#t~mem46#1_17|, t_funThread1of4ForFork0_thidvar0=v_t_funThread1of4ForFork0_thidvar0_4} OutVars{ULTIMATE.start_main_#t~mem46#1=|v_ULTIMATE.start_main_#t~mem46#1_17|, t_funThread1of4ForFork0_thidvar0=v_t_funThread1of4ForFork0_thidvar0_4} AuxVars[] AssignedVars[][147], [t_funThread2of4ForFork0NotInUse, t_funThread3of4ForFork0NotInUse, t_funThread4of4ForFork0NotInUse, 251#true, 149#L952-4true, Black: 236#(and (= |ULTIMATE.start_main_~i~1#1| 0) (= 0 |ULTIMATE.start_main_#t~post37#1|)), Black: 233#(= |ULTIMATE.start_main_~i~1#1| 0), Black: 234#(= 0 |ULTIMATE.start_main_#t~post37#1|), Black: 243#(= ~global~0 0), Black: 244#(= |t_funThread1of4ForFork0_#t~post33| 0), Black: 246#(and (= |t_funThread1of4ForFork0_#t~post33| 0) (= ~global~0 0)), 264#(<= 1 |ULTIMATE.start_main_~i~1#1|), t_funThread1of4ForFork0NotInUse]) [2022-11-18 20:24:35,908 INFO L383 tUnfolder$Statistics]: this new event has 231 ancestors and is cut-off event [2022-11-18 20:24:35,908 INFO L386 tUnfolder$Statistics]: existing Event has 90 ancestors and is cut-off event [2022-11-18 20:24:35,908 INFO L386 tUnfolder$Statistics]: existing Event has 137 ancestors and is cut-off event [2022-11-18 20:24:35,908 INFO L386 tUnfolder$Statistics]: existing Event has 137 ancestors and is cut-off event [2022-11-18 20:24:35,910 INFO L130 PetriNetUnfolder]: 176/2728 cut-off events. [2022-11-18 20:24:35,910 INFO L131 PetriNetUnfolder]: For 1031/2402 co-relation queries the response was YES. [2022-11-18 20:24:35,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3432 conditions, 2728 events. 176/2728 cut-off events. For 1031/2402 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 23243 event pairs, 64 based on Foata normal form. 41/2348 useless extension candidates. Maximal degree in co-relation 2652. Up to 214 conditions per place. [2022-11-18 20:24:35,945 INFO L137 encePairwiseOnDemand]: 250/255 looper letters, 19 selfloop transitions, 6 changer transitions 0/239 dead transitions. [2022-11-18 20:24:35,945 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 239 transitions, 670 flow [2022-11-18 20:24:35,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:24:35,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 20:24:35,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1461 transitions. [2022-11-18 20:24:35,947 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8184873949579832 [2022-11-18 20:24:35,947 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1461 transitions. [2022-11-18 20:24:35,947 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1461 transitions. [2022-11-18 20:24:35,948 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:24:35,948 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1461 transitions. [2022-11-18 20:24:35,950 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 208.71428571428572) internal successors, (1461), 7 states have internal predecessors, (1461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:24:35,952 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 255.0) internal successors, (2040), 8 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:24:35,952 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 255.0) internal successors, (2040), 8 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:24:35,952 INFO L175 Difference]: Start difference. First operand has 243 places, 237 transitions, 618 flow. Second operand 7 states and 1461 transitions. [2022-11-18 20:24:35,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 239 transitions, 670 flow [2022-11-18 20:24:35,954 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 239 transitions, 658 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 20:24:35,958 INFO L231 Difference]: Finished difference. Result has 245 places, 236 transitions, 614 flow [2022-11-18 20:24:35,958 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=602, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=614, PETRI_PLACES=245, PETRI_TRANSITIONS=236} [2022-11-18 20:24:35,959 INFO L288 CegarLoopForPetriNet]: 228 programPoint places, 17 predicate places. [2022-11-18 20:24:35,959 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 236 transitions, 614 flow [2022-11-18 20:24:35,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 207.66666666666666) internal successors, (1246), 6 states have internal predecessors, (1246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:24:35,960 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:24:35,960 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:24:35,971 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_803911e8-fee0-4c39-96d0-ba260a939a57/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-18 20:24:36,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_803911e8-fee0-4c39-96d0-ba260a939a57/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-11-18 20:24:36,166 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-18 20:24:36,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:24:36,166 INFO L85 PathProgramCache]: Analyzing trace with hash -141401100, now seen corresponding path program 1 times [2022-11-18 20:24:36,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:24:36,167 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969277597] [2022-11-18 20:24:36,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:24:36,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:24:36,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:36,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:24:36,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:24:36,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969277597] [2022-11-18 20:24:36,257 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969277597] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:24:36,257 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:24:36,257 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:24:36,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405362514] [2022-11-18 20:24:36,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:24:36,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:24:36,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:24:36,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:24:36,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:24:36,260 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 255 [2022-11-18 20:24:36,261 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 236 transitions, 614 flow. Second operand has 6 states, 6 states have (on average 190.5) internal successors, (1143), 6 states have internal predecessors, (1143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:24:36,261 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:24:36,261 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 255 [2022-11-18 20:24:36,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand