./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_51-mutexptr_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5eecc52-ec42-4d0f-9e56-6473eabc13db/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5eecc52-ec42-4d0f-9e56-6473eabc13db/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5eecc52-ec42-4d0f-9e56-6473eabc13db/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5eecc52-ec42-4d0f-9e56-6473eabc13db/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_51-mutexptr_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5eecc52-ec42-4d0f-9e56-6473eabc13db/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5eecc52-ec42-4d0f-9e56-6473eabc13db/bin/uautomizer-uyxdKDjOR8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f222d5749b9bb10b4d4c09b2c40e45ee19dec77732a8593ce917652e8ca8a43e --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-13 18:46:21,793 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 18:46:21,795 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 18:46:21,808 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 18:46:21,808 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 18:46:21,808 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 18:46:21,809 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 18:46:21,810 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 18:46:21,811 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 18:46:21,812 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 18:46:21,813 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 18:46:21,813 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 18:46:21,813 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 18:46:21,814 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 18:46:21,815 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 18:46:21,815 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 18:46:21,816 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 18:46:21,817 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 18:46:21,818 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 18:46:21,819 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 18:46:21,820 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 18:46:21,822 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 18:46:21,823 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 18:46:21,823 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 18:46:21,826 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 18:46:21,826 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 18:46:21,826 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 18:46:21,827 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 18:46:21,827 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 18:46:21,827 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 18:46:21,828 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 18:46:21,828 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 18:46:21,829 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 18:46:21,829 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 18:46:21,830 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 18:46:21,830 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 18:46:21,830 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 18:46:21,831 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 18:46:21,831 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 18:46:21,831 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 18:46:21,832 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 18:46:21,833 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5eecc52-ec42-4d0f-9e56-6473eabc13db/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-12-13 18:46:21,847 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 18:46:21,847 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 18:46:21,847 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 18:46:21,847 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 18:46:21,848 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 18:46:21,848 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 18:46:21,849 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 18:46:21,849 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 18:46:21,849 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 18:46:21,849 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 18:46:21,849 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 18:46:21,849 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 18:46:21,849 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 18:46:21,849 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 18:46:21,850 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 18:46:21,850 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 18:46:21,850 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 18:46:21,850 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 18:46:21,850 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-13 18:46:21,850 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 18:46:21,850 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 18:46:21,850 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 18:46:21,851 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 18:46:21,851 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 18:46:21,851 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 18:46:21,851 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 18:46:21,851 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 18:46:21,851 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 18:46:21,851 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 18:46:21,852 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 18:46:21,852 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 18:46:21,852 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 18:46:21,852 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 18:46:21,852 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 18:46:21,852 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 18:46:21,852 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 18:46:21,852 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 18:46:21,852 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5eecc52-ec42-4d0f-9e56-6473eabc13db/bin/uautomizer-uyxdKDjOR8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5eecc52-ec42-4d0f-9e56-6473eabc13db/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f222d5749b9bb10b4d4c09b2c40e45ee19dec77732a8593ce917652e8ca8a43e [2022-12-13 18:46:22,042 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 18:46:22,059 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 18:46:22,061 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 18:46:22,062 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 18:46:22,063 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 18:46:22,064 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5eecc52-ec42-4d0f-9e56-6473eabc13db/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/goblint-regression/28-race_reach_51-mutexptr_racefree.i [2022-12-13 18:46:24,667 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 18:46:24,873 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 18:46:24,874 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5eecc52-ec42-4d0f-9e56-6473eabc13db/sv-benchmarks/c/goblint-regression/28-race_reach_51-mutexptr_racefree.i [2022-12-13 18:46:24,885 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5eecc52-ec42-4d0f-9e56-6473eabc13db/bin/uautomizer-uyxdKDjOR8/data/0e060a3ff/9582136d18da4cf0904e5c708b472f8d/FLAG02d2496a0 [2022-12-13 18:46:24,898 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5eecc52-ec42-4d0f-9e56-6473eabc13db/bin/uautomizer-uyxdKDjOR8/data/0e060a3ff/9582136d18da4cf0904e5c708b472f8d [2022-12-13 18:46:24,901 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 18:46:24,902 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 18:46:24,904 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 18:46:24,904 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 18:46:24,907 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 18:46:24,907 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 06:46:24" (1/1) ... [2022-12-13 18:46:24,908 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4fcb1e50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:46:24, skipping insertion in model container [2022-12-13 18:46:24,908 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 06:46:24" (1/1) ... [2022-12-13 18:46:24,913 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 18:46:24,948 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 18:46:25,225 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5eecc52-ec42-4d0f-9e56-6473eabc13db/sv-benchmarks/c/goblint-regression/28-race_reach_51-mutexptr_racefree.i[30176,30189] [2022-12-13 18:46:25,246 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 18:46:25,260 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 18:46:25,292 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5eecc52-ec42-4d0f-9e56-6473eabc13db/sv-benchmarks/c/goblint-regression/28-race_reach_51-mutexptr_racefree.i[30176,30189] [2022-12-13 18:46:25,301 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 18:46:25,338 INFO L208 MainTranslator]: Completed translation [2022-12-13 18:46:25,338 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:46:25 WrapperNode [2022-12-13 18:46:25,339 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 18:46:25,340 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 18:46:25,340 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 18:46:25,340 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 18:46:25,346 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:46:25" (1/1) ... [2022-12-13 18:46:25,362 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:46:25" (1/1) ... [2022-12-13 18:46:25,377 INFO L138 Inliner]: procedures = 170, calls = 37, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 92 [2022-12-13 18:46:25,377 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 18:46:25,377 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 18:46:25,377 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 18:46:25,378 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 18:46:25,384 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:46:25" (1/1) ... [2022-12-13 18:46:25,385 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:46:25" (1/1) ... [2022-12-13 18:46:25,386 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:46:25" (1/1) ... [2022-12-13 18:46:25,387 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:46:25" (1/1) ... [2022-12-13 18:46:25,391 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:46:25" (1/1) ... [2022-12-13 18:46:25,394 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:46:25" (1/1) ... [2022-12-13 18:46:25,395 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:46:25" (1/1) ... [2022-12-13 18:46:25,396 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:46:25" (1/1) ... [2022-12-13 18:46:25,397 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 18:46:25,398 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 18:46:25,398 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 18:46:25,398 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 18:46:25,399 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:46:25" (1/1) ... [2022-12-13 18:46:25,403 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 18:46:25,411 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5eecc52-ec42-4d0f-9e56-6473eabc13db/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:46:25,422 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5eecc52-ec42-4d0f-9e56-6473eabc13db/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 18:46:25,424 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5eecc52-ec42-4d0f-9e56-6473eabc13db/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 18:46:25,452 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 18:46:25,452 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 18:46:25,453 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-12-13 18:46:25,453 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 18:46:25,453 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 18:46:25,453 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-12-13 18:46:25,453 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-12-13 18:46:25,453 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 18:46:25,453 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 18:46:25,453 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 18:46:25,454 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 18:46:25,455 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-13 18:46:25,567 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 18:46:25,569 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 18:46:25,767 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 18:46:25,775 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 18:46:25,776 INFO L300 CfgBuilder]: Removed 10 assume(true) statements. [2022-12-13 18:46:25,778 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 06:46:25 BoogieIcfgContainer [2022-12-13 18:46:25,778 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 18:46:25,780 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 18:46:25,780 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 18:46:25,783 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 18:46:25,783 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 06:46:24" (1/3) ... [2022-12-13 18:46:25,784 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e5dda1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 06:46:25, skipping insertion in model container [2022-12-13 18:46:25,784 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:46:25" (2/3) ... [2022-12-13 18:46:25,784 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e5dda1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 06:46:25, skipping insertion in model container [2022-12-13 18:46:25,785 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 06:46:25" (3/3) ... [2022-12-13 18:46:25,786 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_51-mutexptr_racefree.i [2022-12-13 18:46:25,793 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 18:46:25,800 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 18:46:25,801 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-12-13 18:46:25,801 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 18:46:25,859 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-12-13 18:46:25,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 135 places, 144 transitions, 296 flow [2022-12-13 18:46:25,937 INFO L130 PetriNetUnfolder]: 17/182 cut-off events. [2022-12-13 18:46:25,937 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 18:46:25,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 188 conditions, 182 events. 17/182 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 431 event pairs, 0 based on Foata normal form. 0/154 useless extension candidates. Maximal degree in co-relation 90. Up to 4 conditions per place. [2022-12-13 18:46:25,944 INFO L82 GeneralOperation]: Start removeDead. Operand has 135 places, 144 transitions, 296 flow [2022-12-13 18:46:25,949 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 133 places, 141 transitions, 290 flow [2022-12-13 18:46:25,953 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 18:46:25,964 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 133 places, 141 transitions, 290 flow [2022-12-13 18:46:25,966 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 133 places, 141 transitions, 290 flow [2022-12-13 18:46:25,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 133 places, 141 transitions, 290 flow [2022-12-13 18:46:26,005 INFO L130 PetriNetUnfolder]: 16/179 cut-off events. [2022-12-13 18:46:26,005 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 18:46:26,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 185 conditions, 179 events. 16/179 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 429 event pairs, 0 based on Foata normal form. 0/152 useless extension candidates. Maximal degree in co-relation 90. Up to 4 conditions per place. [2022-12-13 18:46:26,009 INFO L119 LiptonReduction]: Number of co-enabled transitions 4128 [2022-12-13 18:46:28,716 INFO L134 LiptonReduction]: Checked pairs total: 7606 [2022-12-13 18:46:28,716 INFO L136 LiptonReduction]: Total number of compositions: 127 [2022-12-13 18:46:28,727 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 18:46:28,731 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;@1088a43c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 18:46:28,731 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2022-12-13 18:46:28,734 INFO L130 PetriNetUnfolder]: 1/10 cut-off events. [2022-12-13 18:46:28,734 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 18:46:28,734 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:46:28,734 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-12-13 18:46:28,735 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)] === [2022-12-13 18:46:28,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:46:28,738 INFO L85 PathProgramCache]: Analyzing trace with hash 16669380, now seen corresponding path program 1 times [2022-12-13 18:46:28,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:46:28,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117660520] [2022-12-13 18:46:28,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:46:28,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:46:28,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:46:28,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:46:28,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:46:28,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117660520] [2022-12-13 18:46:28,923 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117660520] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:46:28,923 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:46:28,924 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 18:46:28,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521106825] [2022-12-13 18:46:28,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:46:28,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:46:28,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:46:28,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:46:28,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:46:28,962 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 271 [2022-12-13 18:46:28,964 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 40 transitions, 88 flow. Second operand has 3 states, 3 states have (on average 127.33333333333333) internal successors, (382), 3 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:46:28,964 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:46:28,964 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 271 [2022-12-13 18:46:28,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:46:29,065 INFO L130 PetriNetUnfolder]: 117/278 cut-off events. [2022-12-13 18:46:29,065 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 18:46:29,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 560 conditions, 278 events. 117/278 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1304 event pairs, 0 based on Foata normal form. 20/229 useless extension candidates. Maximal degree in co-relation 514. Up to 247 conditions per place. [2022-12-13 18:46:29,068 INFO L137 encePairwiseOnDemand]: 258/271 looper letters, 39 selfloop transitions, 2 changer transitions 0/44 dead transitions. [2022-12-13 18:46:29,068 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 44 transitions, 178 flow [2022-12-13 18:46:29,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:46:29,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 18:46:29,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 436 transitions. [2022-12-13 18:46:29,078 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5362853628536285 [2022-12-13 18:46:29,079 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 436 transitions. [2022-12-13 18:46:29,079 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 436 transitions. [2022-12-13 18:46:29,080 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:46:29,082 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 436 transitions. [2022-12-13 18:46:29,084 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 145.33333333333334) internal successors, (436), 3 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:46:29,088 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 271.0) internal successors, (1084), 4 states have internal predecessors, (1084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:46:29,088 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 271.0) internal successors, (1084), 4 states have internal predecessors, (1084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:46:29,090 INFO L175 Difference]: Start difference. First operand has 35 places, 40 transitions, 88 flow. Second operand 3 states and 436 transitions. [2022-12-13 18:46:29,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 44 transitions, 178 flow [2022-12-13 18:46:29,092 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 44 transitions, 178 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 18:46:29,094 INFO L231 Difference]: Finished difference. Result has 36 places, 30 transitions, 76 flow [2022-12-13 18:46:29,095 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=271, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=76, PETRI_PLACES=36, PETRI_TRANSITIONS=30} [2022-12-13 18:46:29,098 INFO L288 CegarLoopForPetriNet]: 35 programPoint places, 1 predicate places. [2022-12-13 18:46:29,098 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 30 transitions, 76 flow [2022-12-13 18:46:29,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 127.33333333333333) internal successors, (382), 3 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:46:29,098 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:46:29,098 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2022-12-13 18:46:29,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 18:46:29,099 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-12-13 18:46:29,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:46:29,099 INFO L85 PathProgramCache]: Analyzing trace with hash -1160536837, now seen corresponding path program 1 times [2022-12-13 18:46:29,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:46:29,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838842274] [2022-12-13 18:46:29,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:46:29,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:46:29,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 18:46:29,118 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 18:46:29,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 18:46:29,142 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 18:46:29,143 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 18:46:29,144 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2022-12-13 18:46:29,145 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2022-12-13 18:46:29,146 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2022-12-13 18:46:29,146 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 13 remaining) [2022-12-13 18:46:29,146 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 13 remaining) [2022-12-13 18:46:29,146 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 13 remaining) [2022-12-13 18:46:29,146 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 13 remaining) [2022-12-13 18:46:29,147 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 13 remaining) [2022-12-13 18:46:29,147 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 13 remaining) [2022-12-13 18:46:29,147 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 13 remaining) [2022-12-13 18:46:29,147 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 13 remaining) [2022-12-13 18:46:29,147 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2022-12-13 18:46:29,147 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2022-12-13 18:46:29,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 18:46:29,148 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2022-12-13 18:46:29,150 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-13 18:46:29,150 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-12-13 18:46:29,168 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-13 18:46:29,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 175 places, 189 transitions, 396 flow [2022-12-13 18:46:29,202 INFO L130 PetriNetUnfolder]: 31/302 cut-off events. [2022-12-13 18:46:29,202 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-12-13 18:46:29,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 316 conditions, 302 events. 31/302 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 931 event pairs, 0 based on Foata normal form. 0/249 useless extension candidates. Maximal degree in co-relation 184. Up to 8 conditions per place. [2022-12-13 18:46:29,203 INFO L82 GeneralOperation]: Start removeDead. Operand has 175 places, 189 transitions, 396 flow [2022-12-13 18:46:29,205 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 175 places, 189 transitions, 396 flow [2022-12-13 18:46:29,205 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 18:46:29,205 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 175 places, 189 transitions, 396 flow [2022-12-13 18:46:29,206 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 175 places, 189 transitions, 396 flow [2022-12-13 18:46:29,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 175 places, 189 transitions, 396 flow [2022-12-13 18:46:29,229 INFO L130 PetriNetUnfolder]: 31/302 cut-off events. [2022-12-13 18:46:29,229 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-12-13 18:46:29,231 INFO L83 FinitePrefix]: Finished finitePrefix Result has 316 conditions, 302 events. 31/302 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 931 event pairs, 0 based on Foata normal form. 0/249 useless extension candidates. Maximal degree in co-relation 184. Up to 8 conditions per place. [2022-12-13 18:46:29,236 INFO L119 LiptonReduction]: Number of co-enabled transitions 13588 [2022-12-13 18:46:32,027 INFO L134 LiptonReduction]: Checked pairs total: 30037 [2022-12-13 18:46:32,027 INFO L136 LiptonReduction]: Total number of compositions: 163 [2022-12-13 18:46:32,030 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 18:46:32,031 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;@1088a43c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 18:46:32,031 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2022-12-13 18:46:32,033 INFO L130 PetriNetUnfolder]: 2/14 cut-off events. [2022-12-13 18:46:32,033 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 18:46:32,033 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:46:32,033 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 18:46:32,033 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-12-13 18:46:32,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:46:32,033 INFO L85 PathProgramCache]: Analyzing trace with hash 895325065, now seen corresponding path program 1 times [2022-12-13 18:46:32,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:46:32,034 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582927692] [2022-12-13 18:46:32,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:46:32,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:46:32,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:46:32,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:46:32,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:46:32,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582927692] [2022-12-13 18:46:32,081 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582927692] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:46:32,081 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:46:32,081 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 18:46:32,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377233423] [2022-12-13 18:46:32,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:46:32,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:46:32,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:46:32,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:46:32,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:46:32,091 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 352 [2022-12-13 18:46:32,093 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 66 transitions, 150 flow. Second operand has 3 states, 3 states have (on average 164.33333333333334) internal successors, (493), 3 states have internal predecessors, (493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:46:32,093 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:46:32,093 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 352 [2022-12-13 18:46:32,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:46:32,618 INFO L130 PetriNetUnfolder]: 4435/7345 cut-off events. [2022-12-13 18:46:32,618 INFO L131 PetriNetUnfolder]: For 76/76 co-relation queries the response was YES. [2022-12-13 18:46:32,622 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14512 conditions, 7345 events. 4435/7345 cut-off events. For 76/76 co-relation queries the response was YES. Maximal size of possible extension queue 330. Compared 48500 event pairs, 2080 based on Foata normal form. 696/5707 useless extension candidates. Maximal degree in co-relation 1674. Up to 7046 conditions per place. [2022-12-13 18:46:32,643 INFO L137 encePairwiseOnDemand]: 333/352 looper letters, 58 selfloop transitions, 2 changer transitions 0/67 dead transitions. [2022-12-13 18:46:32,643 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 67 transitions, 272 flow [2022-12-13 18:46:32,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:46:32,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 18:46:32,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 572 transitions. [2022-12-13 18:46:32,647 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5416666666666666 [2022-12-13 18:46:32,647 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 572 transitions. [2022-12-13 18:46:32,647 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 572 transitions. [2022-12-13 18:46:32,648 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:46:32,648 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 572 transitions. [2022-12-13 18:46:32,649 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 190.66666666666666) internal successors, (572), 3 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) [2022-12-13 18:46:32,651 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 352.0) internal successors, (1408), 4 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:46:32,653 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 352.0) internal successors, (1408), 4 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:46:32,653 INFO L175 Difference]: Start difference. First operand has 55 places, 66 transitions, 150 flow. Second operand 3 states and 572 transitions. [2022-12-13 18:46:32,653 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 67 transitions, 272 flow [2022-12-13 18:46:32,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 67 transitions, 272 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 18:46:32,656 INFO L231 Difference]: Finished difference. Result has 58 places, 53 transitions, 138 flow [2022-12-13 18:46:32,656 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=138, PETRI_PLACES=58, PETRI_TRANSITIONS=53} [2022-12-13 18:46:32,656 INFO L288 CegarLoopForPetriNet]: 55 programPoint places, 3 predicate places. [2022-12-13 18:46:32,656 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 53 transitions, 138 flow [2022-12-13 18:46:32,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 164.33333333333334) internal successors, (493), 3 states have internal predecessors, (493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:46:32,657 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:46:32,657 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:46:32,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 18:46:32,657 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-12-13 18:46:32,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:46:32,657 INFO L85 PathProgramCache]: Analyzing trace with hash 1425027224, now seen corresponding path program 1 times [2022-12-13 18:46:32,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:46:32,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463480961] [2022-12-13 18:46:32,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:46:32,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:46:32,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:46:32,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:46:32,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:46:32,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463480961] [2022-12-13 18:46:32,814 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463480961] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:46:32,814 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:46:32,814 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 18:46:32,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109701464] [2022-12-13 18:46:32,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:46:32,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 18:46:32,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:46:32,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 18:46:32,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 18:46:32,877 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 352 [2022-12-13 18:46:32,879 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 53 transitions, 138 flow. Second operand has 4 states, 4 states have (on average 158.5) internal successors, (634), 4 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:46:32,879 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:46:32,879 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 352 [2022-12-13 18:46:32,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:46:33,599 INFO L130 PetriNetUnfolder]: 5036/8640 cut-off events. [2022-12-13 18:46:33,599 INFO L131 PetriNetUnfolder]: For 495/495 co-relation queries the response was YES. [2022-12-13 18:46:33,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17959 conditions, 8640 events. 5036/8640 cut-off events. For 495/495 co-relation queries the response was YES. Maximal size of possible extension queue 403. Compared 61109 event pairs, 1534 based on Foata normal form. 0/6603 useless extension candidates. Maximal degree in co-relation 17871. Up to 6089 conditions per place. [2022-12-13 18:46:33,663 INFO L137 encePairwiseOnDemand]: 337/352 looper letters, 84 selfloop transitions, 9 changer transitions 0/100 dead transitions. [2022-12-13 18:46:33,663 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 100 transitions, 440 flow [2022-12-13 18:46:33,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 18:46:33,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 18:46:33,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 731 transitions. [2022-12-13 18:46:33,666 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5191761363636364 [2022-12-13 18:46:33,667 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 731 transitions. [2022-12-13 18:46:33,667 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 731 transitions. [2022-12-13 18:46:33,667 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:46:33,667 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 731 transitions. [2022-12-13 18:46:33,670 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 182.75) internal successors, (731), 4 states have internal predecessors, (731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:46:33,673 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 352.0) internal successors, (1760), 5 states have internal predecessors, (1760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:46:33,675 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 352.0) internal successors, (1760), 5 states have internal predecessors, (1760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:46:33,675 INFO L175 Difference]: Start difference. First operand has 58 places, 53 transitions, 138 flow. Second operand 4 states and 731 transitions. [2022-12-13 18:46:33,675 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 100 transitions, 440 flow [2022-12-13 18:46:33,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 100 transitions, 437 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 18:46:33,678 INFO L231 Difference]: Finished difference. Result has 63 places, 61 transitions, 224 flow [2022-12-13 18:46:33,679 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=224, PETRI_PLACES=63, PETRI_TRANSITIONS=61} [2022-12-13 18:46:33,679 INFO L288 CegarLoopForPetriNet]: 55 programPoint places, 8 predicate places. [2022-12-13 18:46:33,679 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 61 transitions, 224 flow [2022-12-13 18:46:33,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 158.5) internal successors, (634), 4 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:46:33,680 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:46:33,680 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-12-13 18:46:33,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 18:46:33,681 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)] === [2022-12-13 18:46:33,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:46:33,681 INFO L85 PathProgramCache]: Analyzing trace with hash 1634936649, now seen corresponding path program 1 times [2022-12-13 18:46:33,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:46:33,682 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137765738] [2022-12-13 18:46:33,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:46:33,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:46:33,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:46:33,726 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:46:33,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:46:33,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137765738] [2022-12-13 18:46:33,726 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137765738] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:46:33,727 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:46:33,727 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 18:46:33,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119501520] [2022-12-13 18:46:33,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:46:33,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:46:33,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:46:33,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:46:33,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:46:33,736 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 352 [2022-12-13 18:46:33,737 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 61 transitions, 224 flow. Second operand has 3 states, 3 states have (on average 165.33333333333334) internal successors, (496), 3 states have internal predecessors, (496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:46:33,737 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:46:33,737 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 352 [2022-12-13 18:46:33,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:46:34,419 INFO L130 PetriNetUnfolder]: 4708/8109 cut-off events. [2022-12-13 18:46:34,420 INFO L131 PetriNetUnfolder]: For 2663/2678 co-relation queries the response was YES. [2022-12-13 18:46:34,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20172 conditions, 8109 events. 4708/8109 cut-off events. For 2663/2678 co-relation queries the response was YES. Maximal size of possible extension queue 375. Compared 56477 event pairs, 4273 based on Foata normal form. 0/7251 useless extension candidates. Maximal degree in co-relation 16527. Up to 7954 conditions per place. [2022-12-13 18:46:34,459 INFO L137 encePairwiseOnDemand]: 350/352 looper letters, 52 selfloop transitions, 1 changer transitions 0/60 dead transitions. [2022-12-13 18:46:34,459 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 60 transitions, 326 flow [2022-12-13 18:46:34,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:46:34,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 18:46:34,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 534 transitions. [2022-12-13 18:46:34,462 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5056818181818182 [2022-12-13 18:46:34,462 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 534 transitions. [2022-12-13 18:46:34,462 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 534 transitions. [2022-12-13 18:46:34,463 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:46:34,463 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 534 transitions. [2022-12-13 18:46:34,465 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 178.0) internal successors, (534), 3 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:46:34,468 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 352.0) internal successors, (1408), 4 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:46:34,468 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 352.0) internal successors, (1408), 4 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:46:34,469 INFO L175 Difference]: Start difference. First operand has 63 places, 61 transitions, 224 flow. Second operand 3 states and 534 transitions. [2022-12-13 18:46:34,469 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 60 transitions, 326 flow [2022-12-13 18:46:34,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 60 transitions, 326 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 18:46:34,476 INFO L231 Difference]: Finished difference. Result has 64 places, 60 transitions, 222 flow [2022-12-13 18:46:34,477 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=222, PETRI_PLACES=64, PETRI_TRANSITIONS=60} [2022-12-13 18:46:34,477 INFO L288 CegarLoopForPetriNet]: 55 programPoint places, 9 predicate places. [2022-12-13 18:46:34,478 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 60 transitions, 222 flow [2022-12-13 18:46:34,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 165.33333333333334) internal successors, (496), 3 states have internal predecessors, (496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:46:34,478 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:46:34,478 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-12-13 18:46:34,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 18:46:34,479 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)] === [2022-12-13 18:46:34,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:46:34,479 INFO L85 PathProgramCache]: Analyzing trace with hash 1634936650, now seen corresponding path program 1 times [2022-12-13 18:46:34,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:46:34,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057979455] [2022-12-13 18:46:34,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:46:34,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:46:34,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:46:34,519 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 18:46:34,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:46:34,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057979455] [2022-12-13 18:46:34,520 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057979455] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:46:34,520 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:46:34,520 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 18:46:34,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983847750] [2022-12-13 18:46:34,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:46:34,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:46:34,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:46:34,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:46:34,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:46:34,530 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 352 [2022-12-13 18:46:34,531 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 60 transitions, 222 flow. Second operand has 3 states, 3 states have (on average 164.33333333333334) internal successors, (493), 3 states have internal predecessors, (493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:46:34,532 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:46:34,532 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 352 [2022-12-13 18:46:34,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:46:35,113 INFO L130 PetriNetUnfolder]: 4380/7577 cut-off events. [2022-12-13 18:46:35,114 INFO L131 PetriNetUnfolder]: For 2522/2522 co-relation queries the response was YES. [2022-12-13 18:46:35,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18815 conditions, 7577 events. 4380/7577 cut-off events. For 2522/2522 co-relation queries the response was YES. Maximal size of possible extension queue 365. Compared 52293 event pairs, 2043 based on Foata normal form. 0/6975 useless extension candidates. Maximal degree in co-relation 18800. Up to 6566 conditions per place. [2022-12-13 18:46:35,134 INFO L137 encePairwiseOnDemand]: 348/352 looper letters, 77 selfloop transitions, 4 changer transitions 0/88 dead transitions. [2022-12-13 18:46:35,135 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 88 transitions, 478 flow [2022-12-13 18:46:35,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:46:35,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 18:46:35,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 557 transitions. [2022-12-13 18:46:35,136 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5274621212121212 [2022-12-13 18:46:35,136 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 557 transitions. [2022-12-13 18:46:35,136 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 557 transitions. [2022-12-13 18:46:35,136 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:46:35,136 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 557 transitions. [2022-12-13 18:46:35,137 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 185.66666666666666) internal successors, (557), 3 states have internal predecessors, (557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:46:35,138 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 352.0) internal successors, (1408), 4 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:46:35,139 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 352.0) internal successors, (1408), 4 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:46:35,139 INFO L175 Difference]: Start difference. First operand has 64 places, 60 transitions, 222 flow. Second operand 3 states and 557 transitions. [2022-12-13 18:46:35,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 88 transitions, 478 flow [2022-12-13 18:46:35,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 88 transitions, 477 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 18:46:35,143 INFO L231 Difference]: Finished difference. Result has 65 places, 60 transitions, 233 flow [2022-12-13 18:46:35,143 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=217, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=233, PETRI_PLACES=65, PETRI_TRANSITIONS=60} [2022-12-13 18:46:35,144 INFO L288 CegarLoopForPetriNet]: 55 programPoint places, 10 predicate places. [2022-12-13 18:46:35,144 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 60 transitions, 233 flow [2022-12-13 18:46:35,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 164.33333333333334) internal successors, (493), 3 states have internal predecessors, (493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:46:35,145 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:46:35,145 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:46:35,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 18:46:35,145 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)] === [2022-12-13 18:46:35,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:46:35,146 INFO L85 PathProgramCache]: Analyzing trace with hash 126236553, now seen corresponding path program 1 times [2022-12-13 18:46:35,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:46:35,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494941186] [2022-12-13 18:46:35,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:46:35,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:46:35,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:46:35,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:46:35,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:46:35,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494941186] [2022-12-13 18:46:35,310 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494941186] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:46:35,310 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:46:35,311 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 18:46:35,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90373788] [2022-12-13 18:46:35,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:46:35,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 18:46:35,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:46:35,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 18:46:35,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 18:46:35,437 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 352 [2022-12-13 18:46:35,438 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 60 transitions, 233 flow. Second operand has 6 states, 6 states have (on average 154.5) internal successors, (927), 6 states have internal predecessors, (927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:46:35,438 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:46:35,438 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 352 [2022-12-13 18:46:35,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:46:36,431 INFO L130 PetriNetUnfolder]: 5435/9515 cut-off events. [2022-12-13 18:46:36,431 INFO L131 PetriNetUnfolder]: For 4922/4935 co-relation queries the response was YES. [2022-12-13 18:46:36,440 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24034 conditions, 9515 events. 5435/9515 cut-off events. For 4922/4935 co-relation queries the response was YES. Maximal size of possible extension queue 416. Compared 68289 event pairs, 754 based on Foata normal form. 91/9027 useless extension candidates. Maximal degree in co-relation 24017. Up to 4346 conditions per place. [2022-12-13 18:46:36,458 INFO L137 encePairwiseOnDemand]: 334/352 looper letters, 181 selfloop transitions, 35 changer transitions 0/223 dead transitions. [2022-12-13 18:46:36,458 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 223 transitions, 1193 flow [2022-12-13 18:46:36,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 18:46:36,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-13 18:46:36,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1595 transitions. [2022-12-13 18:46:36,461 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5034722222222222 [2022-12-13 18:46:36,461 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1595 transitions. [2022-12-13 18:46:36,461 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1595 transitions. [2022-12-13 18:46:36,461 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:46:36,461 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1595 transitions. [2022-12-13 18:46:36,464 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 177.22222222222223) internal successors, (1595), 9 states have internal predecessors, (1595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:46:36,466 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 352.0) internal successors, (3520), 10 states have internal predecessors, (3520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:46:36,467 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 352.0) internal successors, (3520), 10 states have internal predecessors, (3520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:46:36,467 INFO L175 Difference]: Start difference. First operand has 65 places, 60 transitions, 233 flow. Second operand 9 states and 1595 transitions. [2022-12-13 18:46:36,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 223 transitions, 1193 flow [2022-12-13 18:46:36,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 223 transitions, 1175 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 18:46:36,474 INFO L231 Difference]: Finished difference. Result has 79 places, 86 transitions, 529 flow [2022-12-13 18:46:36,474 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=229, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=529, PETRI_PLACES=79, PETRI_TRANSITIONS=86} [2022-12-13 18:46:36,475 INFO L288 CegarLoopForPetriNet]: 55 programPoint places, 24 predicate places. [2022-12-13 18:46:36,475 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 86 transitions, 529 flow [2022-12-13 18:46:36,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 154.5) internal successors, (927), 6 states have internal predecessors, (927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:46:36,475 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:46:36,475 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:46:36,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 18:46:36,476 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)] === [2022-12-13 18:46:36,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:46:36,476 INFO L85 PathProgramCache]: Analyzing trace with hash 126236561, now seen corresponding path program 1 times [2022-12-13 18:46:36,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:46:36,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707825323] [2022-12-13 18:46:36,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:46:36,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:46:36,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:46:36,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:46:36,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:46:36,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707825323] [2022-12-13 18:46:36,540 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707825323] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:46:36,540 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:46:36,540 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 18:46:36,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862119325] [2022-12-13 18:46:36,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:46:36,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:46:36,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:46:36,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:46:36,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:46:36,571 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 352 [2022-12-13 18:46:36,572 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 86 transitions, 529 flow. Second operand has 3 states, 3 states have (on average 163.0) internal successors, (489), 3 states have internal predecessors, (489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:46:36,572 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:46:36,572 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 352 [2022-12-13 18:46:36,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:46:37,396 INFO L130 PetriNetUnfolder]: 5654/10224 cut-off events. [2022-12-13 18:46:37,396 INFO L131 PetriNetUnfolder]: For 17068/17133 co-relation queries the response was YES. [2022-12-13 18:46:37,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31714 conditions, 10224 events. 5654/10224 cut-off events. For 17068/17133 co-relation queries the response was YES. Maximal size of possible extension queue 446. Compared 77420 event pairs, 1886 based on Foata normal form. 360/10395 useless extension candidates. Maximal degree in co-relation 31689. Up to 6223 conditions per place. [2022-12-13 18:46:37,426 INFO L137 encePairwiseOnDemand]: 338/352 looper letters, 105 selfloop transitions, 29 changer transitions 0/141 dead transitions. [2022-12-13 18:46:37,426 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 141 transitions, 1103 flow [2022-12-13 18:46:37,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:46:37,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 18:46:37,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 564 transitions. [2022-12-13 18:46:37,428 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5340909090909091 [2022-12-13 18:46:37,428 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 564 transitions. [2022-12-13 18:46:37,428 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 564 transitions. [2022-12-13 18:46:37,428 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:46:37,428 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 564 transitions. [2022-12-13 18:46:37,429 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 188.0) internal successors, (564), 3 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:46:37,430 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 352.0) internal successors, (1408), 4 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:46:37,430 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 352.0) internal successors, (1408), 4 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:46:37,430 INFO L175 Difference]: Start difference. First operand has 79 places, 86 transitions, 529 flow. Second operand 3 states and 564 transitions. [2022-12-13 18:46:37,430 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 141 transitions, 1103 flow [2022-12-13 18:46:37,454 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 141 transitions, 1075 flow, removed 3 selfloop flow, removed 2 redundant places. [2022-12-13 18:46:37,456 INFO L231 Difference]: Finished difference. Result has 81 places, 108 transitions, 841 flow [2022-12-13 18:46:37,456 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=508, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=841, PETRI_PLACES=81, PETRI_TRANSITIONS=108} [2022-12-13 18:46:37,457 INFO L288 CegarLoopForPetriNet]: 55 programPoint places, 26 predicate places. [2022-12-13 18:46:37,457 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 108 transitions, 841 flow [2022-12-13 18:46:37,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 163.0) internal successors, (489), 3 states have internal predecessors, (489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:46:37,457 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:46:37,457 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-12-13 18:46:37,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 18:46:37,458 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-12-13 18:46:37,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:46:37,458 INFO L85 PathProgramCache]: Analyzing trace with hash -783847750, now seen corresponding path program 1 times [2022-12-13 18:46:37,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:46:37,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563950818] [2022-12-13 18:46:37,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:46:37,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:46:37,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 18:46:37,471 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 18:46:37,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 18:46:37,484 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 18:46:37,485 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 18:46:37,485 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2022-12-13 18:46:37,485 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2022-12-13 18:46:37,485 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2022-12-13 18:46:37,485 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2022-12-13 18:46:37,486 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2022-12-13 18:46:37,486 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2022-12-13 18:46:37,486 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2022-12-13 18:46:37,486 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2022-12-13 18:46:37,486 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 17 remaining) [2022-12-13 18:46:37,486 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 17 remaining) [2022-12-13 18:46:37,486 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 17 remaining) [2022-12-13 18:46:37,486 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2022-12-13 18:46:37,487 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2022-12-13 18:46:37,487 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2022-12-13 18:46:37,487 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2022-12-13 18:46:37,487 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2022-12-13 18:46:37,487 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2022-12-13 18:46:37,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 18:46:37,487 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:46:37,488 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-13 18:46:37,488 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-12-13 18:46:37,510 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-12-13 18:46:37,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 215 places, 234 transitions, 498 flow [2022-12-13 18:46:37,576 INFO L130 PetriNetUnfolder]: 50/463 cut-off events. [2022-12-13 18:46:37,576 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-12-13 18:46:37,579 INFO L83 FinitePrefix]: Finished finitePrefix Result has 491 conditions, 463 events. 50/463 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1645 event pairs, 1 based on Foata normal form. 0/377 useless extension candidates. Maximal degree in co-relation 310. Up to 16 conditions per place. [2022-12-13 18:46:37,579 INFO L82 GeneralOperation]: Start removeDead. Operand has 215 places, 234 transitions, 498 flow [2022-12-13 18:46:37,583 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 215 places, 234 transitions, 498 flow [2022-12-13 18:46:37,583 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 18:46:37,583 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 215 places, 234 transitions, 498 flow [2022-12-13 18:46:37,583 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 215 places, 234 transitions, 498 flow [2022-12-13 18:46:37,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 215 places, 234 transitions, 498 flow [2022-12-13 18:46:37,619 INFO L130 PetriNetUnfolder]: 50/463 cut-off events. [2022-12-13 18:46:37,619 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-12-13 18:46:37,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 491 conditions, 463 events. 50/463 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1645 event pairs, 1 based on Foata normal form. 0/377 useless extension candidates. Maximal degree in co-relation 310. Up to 16 conditions per place. [2022-12-13 18:46:37,632 INFO L119 LiptonReduction]: Number of co-enabled transitions 26316 [2022-12-13 18:46:40,847 INFO L134 LiptonReduction]: Checked pairs total: 61698 [2022-12-13 18:46:40,847 INFO L136 LiptonReduction]: Total number of compositions: 193 [2022-12-13 18:46:40,849 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 18:46:40,849 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;@1088a43c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 18:46:40,849 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2022-12-13 18:46:40,852 INFO L130 PetriNetUnfolder]: 2/14 cut-off events. [2022-12-13 18:46:40,852 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 18:46:40,852 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:46:40,852 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 18:46:40,852 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)] === [2022-12-13 18:46:40,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:46:40,852 INFO L85 PathProgramCache]: Analyzing trace with hash 1345574990, now seen corresponding path program 1 times [2022-12-13 18:46:40,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:46:40,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747165348] [2022-12-13 18:46:40,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:46:40,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:46:40,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:46:40,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:46:40,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:46:40,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747165348] [2022-12-13 18:46:40,877 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747165348] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:46:40,877 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:46:40,877 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 18:46:40,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231701448] [2022-12-13 18:46:40,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:46:40,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:46:40,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:46:40,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:46:40,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:46:40,886 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 200 out of 427 [2022-12-13 18:46:40,887 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 89 transitions, 208 flow. Second operand has 3 states, 3 states have (on average 201.33333333333334) internal successors, (604), 3 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:46:40,887 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:46:40,887 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 200 of 427 [2022-12-13 18:46:40,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:46:49,044 INFO L130 PetriNetUnfolder]: 104647/147206 cut-off events. [2022-12-13 18:46:49,044 INFO L131 PetriNetUnfolder]: For 2799/2799 co-relation queries the response was YES. [2022-12-13 18:46:49,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 294268 conditions, 147206 events. 104647/147206 cut-off events. For 2799/2799 co-relation queries the response was YES. Maximal size of possible extension queue 4261. Compared 1077804 event pairs, 67893 based on Foata normal form. 14020/114185 useless extension candidates. Maximal degree in co-relation 20218. Up to 145193 conditions per place. [2022-12-13 18:46:49,554 INFO L137 encePairwiseOnDemand]: 402/427 looper letters, 75 selfloop transitions, 2 changer transitions 0/85 dead transitions. [2022-12-13 18:46:49,554 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 85 transitions, 354 flow [2022-12-13 18:46:49,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:46:49,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 18:46:49,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 706 transitions. [2022-12-13 18:46:49,557 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5511319281811085 [2022-12-13 18:46:49,557 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 706 transitions. [2022-12-13 18:46:49,557 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 706 transitions. [2022-12-13 18:46:49,557 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:46:49,557 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 706 transitions. [2022-12-13 18:46:49,558 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 235.33333333333334) internal successors, (706), 3 states have internal predecessors, (706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:46:49,560 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 427.0) internal successors, (1708), 4 states have internal predecessors, (1708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:46:49,560 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 427.0) internal successors, (1708), 4 states have internal predecessors, (1708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:46:49,560 INFO L175 Difference]: Start difference. First operand has 73 places, 89 transitions, 208 flow. Second operand 3 states and 706 transitions. [2022-12-13 18:46:49,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 85 transitions, 354 flow [2022-12-13 18:46:49,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 85 transitions, 354 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 18:46:49,562 INFO L231 Difference]: Finished difference. Result has 76 places, 70 transitions, 184 flow [2022-12-13 18:46:49,562 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=427, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=184, PETRI_PLACES=76, PETRI_TRANSITIONS=70} [2022-12-13 18:46:49,563 INFO L288 CegarLoopForPetriNet]: 73 programPoint places, 3 predicate places. [2022-12-13 18:46:49,563 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 70 transitions, 184 flow [2022-12-13 18:46:49,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 201.33333333333334) internal successors, (604), 3 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:46:49,563 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:46:49,563 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:46:49,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 18:46:49,564 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)] === [2022-12-13 18:46:49,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:46:49,564 INFO L85 PathProgramCache]: Analyzing trace with hash 325323451, now seen corresponding path program 1 times [2022-12-13 18:46:49,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:46:49,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017758] [2022-12-13 18:46:49,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:46:49,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:46:49,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:46:49,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:46:49,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:46:49,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017758] [2022-12-13 18:46:49,621 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017758] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:46:49,621 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:46:49,621 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 18:46:49,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174613459] [2022-12-13 18:46:49,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:46:49,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 18:46:49,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:46:49,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 18:46:49,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 18:46:49,673 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 427 [2022-12-13 18:46:49,674 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 70 transitions, 184 flow. Second operand has 4 states, 4 states have (on average 193.5) internal successors, (774), 4 states have internal predecessors, (774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:46:49,675 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:46:49,675 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 427 [2022-12-13 18:46:49,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:47:01,525 INFO L130 PetriNetUnfolder]: 132380/192339 cut-off events. [2022-12-13 18:47:01,525 INFO L131 PetriNetUnfolder]: For 9866/9866 co-relation queries the response was YES. [2022-12-13 18:47:01,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 398277 conditions, 192339 events. 132380/192339 cut-off events. For 9866/9866 co-relation queries the response was YES. Maximal size of possible extension queue 5566. Compared 1535152 event pairs, 49378 based on Foata normal form. 0/146532 useless extension candidates. Maximal degree in co-relation 398183. Up to 141156 conditions per place. [2022-12-13 18:47:02,568 INFO L137 encePairwiseOnDemand]: 406/427 looper letters, 113 selfloop transitions, 12 changer transitions 0/133 dead transitions. [2022-12-13 18:47:02,568 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 133 transitions, 592 flow [2022-12-13 18:47:02,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 18:47:02,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 18:47:02,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 909 transitions. [2022-12-13 18:47:02,573 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5322014051522248 [2022-12-13 18:47:02,574 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 909 transitions. [2022-12-13 18:47:02,574 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 909 transitions. [2022-12-13 18:47:02,575 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:47:02,575 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 909 transitions. [2022-12-13 18:47:02,579 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 227.25) internal successors, (909), 4 states have internal predecessors, (909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:47:02,584 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 427.0) internal successors, (2135), 5 states have internal predecessors, (2135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:47:02,585 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 427.0) internal successors, (2135), 5 states have internal predecessors, (2135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:47:02,585 INFO L175 Difference]: Start difference. First operand has 76 places, 70 transitions, 184 flow. Second operand 4 states and 909 transitions. [2022-12-13 18:47:02,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 133 transitions, 592 flow [2022-12-13 18:47:02,601 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 133 transitions, 589 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 18:47:02,603 INFO L231 Difference]: Finished difference. Result has 81 places, 81 transitions, 304 flow [2022-12-13 18:47:02,604 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=427, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=304, PETRI_PLACES=81, PETRI_TRANSITIONS=81} [2022-12-13 18:47:02,605 INFO L288 CegarLoopForPetriNet]: 73 programPoint places, 8 predicate places. [2022-12-13 18:47:02,605 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 81 transitions, 304 flow [2022-12-13 18:47:02,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 193.5) internal successors, (774), 4 states have internal predecessors, (774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:47:02,605 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:47:02,606 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-12-13 18:47:02,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-13 18:47:02,606 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)] === [2022-12-13 18:47:02,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:47:02,606 INFO L85 PathProgramCache]: Analyzing trace with hash -342027005, now seen corresponding path program 1 times [2022-12-13 18:47:02,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:47:02,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742873445] [2022-12-13 18:47:02,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:47:02,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:47:02,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:47:02,640 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:47:02,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:47:02,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742873445] [2022-12-13 18:47:02,641 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742873445] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:47:02,641 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:47:02,641 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 18:47:02,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275993715] [2022-12-13 18:47:02,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:47:02,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:47:02,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:47:02,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:47:02,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:47:02,651 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 200 out of 427 [2022-12-13 18:47:02,652 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 81 transitions, 304 flow. Second operand has 3 states, 3 states have (on average 202.33333333333334) internal successors, (607), 3 states have internal predecessors, (607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:47:02,652 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:47:02,652 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 200 of 427 [2022-12-13 18:47:02,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:47:14,569 INFO L130 PetriNetUnfolder]: 123616/180704 cut-off events. [2022-12-13 18:47:14,569 INFO L131 PetriNetUnfolder]: For 62148/62156 co-relation queries the response was YES. [2022-12-13 18:47:14,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 453007 conditions, 180704 events. 123616/180704 cut-off events. For 62148/62156 co-relation queries the response was YES. Maximal size of possible extension queue 5131. Compared 1440865 event pairs, 112241 based on Foata normal form. 0/161264 useless extension candidates. Maximal degree in co-relation 97231. Up to 178760 conditions per place. [2022-12-13 18:47:15,337 INFO L137 encePairwiseOnDemand]: 425/427 looper letters, 71 selfloop transitions, 1 changer transitions 0/80 dead transitions. [2022-12-13 18:47:15,337 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 80 transitions, 444 flow [2022-12-13 18:47:15,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:47:15,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 18:47:15,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 661 transitions. [2022-12-13 18:47:15,339 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5160031225604996 [2022-12-13 18:47:15,339 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 661 transitions. [2022-12-13 18:47:15,340 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 661 transitions. [2022-12-13 18:47:15,340 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:47:15,340 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 661 transitions. [2022-12-13 18:47:15,341 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 220.33333333333334) internal successors, (661), 3 states have internal predecessors, (661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:47:15,343 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 427.0) internal successors, (1708), 4 states have internal predecessors, (1708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:47:15,343 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 427.0) internal successors, (1708), 4 states have internal predecessors, (1708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:47:15,343 INFO L175 Difference]: Start difference. First operand has 81 places, 81 transitions, 304 flow. Second operand 3 states and 661 transitions. [2022-12-13 18:47:15,343 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 80 transitions, 444 flow [2022-12-13 18:47:15,414 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 80 transitions, 444 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 18:47:15,415 INFO L231 Difference]: Finished difference. Result has 82 places, 80 transitions, 302 flow [2022-12-13 18:47:15,415 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=427, PETRI_DIFFERENCE_MINUEND_FLOW=300, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=302, PETRI_PLACES=82, PETRI_TRANSITIONS=80} [2022-12-13 18:47:15,415 INFO L288 CegarLoopForPetriNet]: 73 programPoint places, 9 predicate places. [2022-12-13 18:47:15,415 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 80 transitions, 302 flow [2022-12-13 18:47:15,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 202.33333333333334) internal successors, (607), 3 states have internal predecessors, (607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:47:15,416 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:47:15,416 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-12-13 18:47:15,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-13 18:47:15,416 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)] === [2022-12-13 18:47:15,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:47:15,416 INFO L85 PathProgramCache]: Analyzing trace with hash -342027003, now seen corresponding path program 1 times [2022-12-13 18:47:15,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:47:15,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88755323] [2022-12-13 18:47:15,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:47:15,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:47:15,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:47:15,434 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 18:47:15,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:47:15,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88755323] [2022-12-13 18:47:15,434 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88755323] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:47:15,435 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:47:15,435 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 18:47:15,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157321852] [2022-12-13 18:47:15,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:47:15,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:47:15,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:47:15,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:47:15,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:47:15,442 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 199 out of 427 [2022-12-13 18:47:15,442 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 80 transitions, 302 flow. Second operand has 3 states, 3 states have (on average 201.33333333333334) internal successors, (604), 3 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:47:15,442 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:47:15,442 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 199 of 427 [2022-12-13 18:47:15,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:47:26,453 INFO L130 PetriNetUnfolder]: 114852/171186 cut-off events. [2022-12-13 18:47:26,453 INFO L131 PetriNetUnfolder]: For 61030/61034 co-relation queries the response was YES. [2022-12-13 18:47:26,728 INFO L83 FinitePrefix]: Finished finitePrefix Result has 423356 conditions, 171186 events. 114852/171186 cut-off events. For 61030/61034 co-relation queries the response was YES. Maximal size of possible extension queue 4770. Compared 1403561 event pairs, 52066 based on Foata normal form. 1/156257 useless extension candidates. Maximal degree in co-relation 423340. Up to 145804 conditions per place. [2022-12-13 18:47:27,323 INFO L137 encePairwiseOnDemand]: 423/427 looper letters, 112 selfloop transitions, 4 changer transitions 0/124 dead transitions. [2022-12-13 18:47:27,323 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 124 transitions, 680 flow [2022-12-13 18:47:27,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:47:27,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 18:47:27,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 699 transitions. [2022-12-13 18:47:27,325 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5456674473067916 [2022-12-13 18:47:27,325 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 699 transitions. [2022-12-13 18:47:27,325 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 699 transitions. [2022-12-13 18:47:27,325 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:47:27,326 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 699 transitions. [2022-12-13 18:47:27,327 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 233.0) internal successors, (699), 3 states have internal predecessors, (699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:47:27,328 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 427.0) internal successors, (1708), 4 states have internal predecessors, (1708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:47:27,328 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 427.0) internal successors, (1708), 4 states have internal predecessors, (1708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:47:27,328 INFO L175 Difference]: Start difference. First operand has 82 places, 80 transitions, 302 flow. Second operand 3 states and 699 transitions. [2022-12-13 18:47:27,328 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 124 transitions, 680 flow [2022-12-13 18:47:27,352 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 124 transitions, 679 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 18:47:27,353 INFO L231 Difference]: Finished difference. Result has 83 places, 80 transitions, 313 flow [2022-12-13 18:47:27,353 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=427, PETRI_DIFFERENCE_MINUEND_FLOW=297, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=313, PETRI_PLACES=83, PETRI_TRANSITIONS=80} [2022-12-13 18:47:27,353 INFO L288 CegarLoopForPetriNet]: 73 programPoint places, 10 predicate places. [2022-12-13 18:47:27,353 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 80 transitions, 313 flow [2022-12-13 18:47:27,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 201.33333333333334) internal successors, (604), 3 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:47:27,354 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:47:27,354 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:47:27,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-13 18:47:27,354 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-12-13 18:47:27,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:47:27,354 INFO L85 PathProgramCache]: Analyzing trace with hash 1526693279, now seen corresponding path program 1 times [2022-12-13 18:47:27,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:47:27,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526841027] [2022-12-13 18:47:27,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:47:27,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:47:27,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:47:27,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:47:27,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:47:27,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526841027] [2022-12-13 18:47:27,398 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526841027] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:47:27,398 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:47:27,398 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 18:47:27,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043548528] [2022-12-13 18:47:27,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:47:27,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:47:27,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:47:27,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:47:27,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:47:27,436 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 195 out of 427 [2022-12-13 18:47:27,437 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 80 transitions, 313 flow. Second operand has 3 states, 3 states have (on average 198.33333333333334) internal successors, (595), 3 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) [2022-12-13 18:47:27,437 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:47:27,437 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 195 of 427 [2022-12-13 18:47:27,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:47:39,747 INFO L130 PetriNetUnfolder]: 131453/195422 cut-off events. [2022-12-13 18:47:39,747 INFO L131 PetriNetUnfolder]: For 102457/102474 co-relation queries the response was YES. [2022-12-13 18:47:40,074 INFO L83 FinitePrefix]: Finished finitePrefix Result has 501929 conditions, 195422 events. 131453/195422 cut-off events. For 102457/102474 co-relation queries the response was YES. Maximal size of possible extension queue 5191. Compared 1620616 event pairs, 60732 based on Foata normal form. 3/183029 useless extension candidates. Maximal degree in co-relation 501911. Up to 150719 conditions per place. [2022-12-13 18:47:40,656 INFO L137 encePairwiseOnDemand]: 409/427 looper letters, 109 selfloop transitions, 21 changer transitions 0/138 dead transitions. [2022-12-13 18:47:40,656 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 138 transitions, 785 flow [2022-12-13 18:47:40,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:47:40,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 18:47:40,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 701 transitions. [2022-12-13 18:47:40,658 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5472287275565965 [2022-12-13 18:47:40,658 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 701 transitions. [2022-12-13 18:47:40,658 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 701 transitions. [2022-12-13 18:47:40,658 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:47:40,659 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 701 transitions. [2022-12-13 18:47:40,659 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 233.66666666666666) internal successors, (701), 3 states have internal predecessors, (701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:47:40,661 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 427.0) internal successors, (1708), 4 states have internal predecessors, (1708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:47:40,661 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 427.0) internal successors, (1708), 4 states have internal predecessors, (1708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:47:40,661 INFO L175 Difference]: Start difference. First operand has 83 places, 80 transitions, 313 flow. Second operand 3 states and 701 transitions. [2022-12-13 18:47:40,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 138 transitions, 785 flow [2022-12-13 18:47:40,711 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 138 transitions, 778 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 18:47:40,712 INFO L231 Difference]: Finished difference. Result has 86 places, 97 transitions, 515 flow [2022-12-13 18:47:40,712 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=427, PETRI_DIFFERENCE_MINUEND_FLOW=309, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=515, PETRI_PLACES=86, PETRI_TRANSITIONS=97} [2022-12-13 18:47:40,713 INFO L288 CegarLoopForPetriNet]: 73 programPoint places, 13 predicate places. [2022-12-13 18:47:40,713 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 97 transitions, 515 flow [2022-12-13 18:47:40,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 198.33333333333334) internal successors, (595), 3 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) [2022-12-13 18:47:40,713 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:47:40,713 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:47:40,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-13 18:47:40,713 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-12-13 18:47:40,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:47:40,714 INFO L85 PathProgramCache]: Analyzing trace with hash 1526693280, now seen corresponding path program 1 times [2022-12-13 18:47:40,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:47:40,714 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915964901] [2022-12-13 18:47:40,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:47:40,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:47:40,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:47:40,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:47:40,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:47:40,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915964901] [2022-12-13 18:47:40,793 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915964901] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:47:40,793 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:47:40,793 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 18:47:40,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022433926] [2022-12-13 18:47:40,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:47:40,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 18:47:40,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:47:40,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 18:47:40,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 18:47:40,920 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 427 [2022-12-13 18:47:40,921 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 97 transitions, 515 flow. Second operand has 6 states, 6 states have (on average 189.66666666666666) internal successors, (1138), 6 states have internal predecessors, (1138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:47:40,922 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:47:40,922 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 427 [2022-12-13 18:47:40,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:47:59,360 INFO L130 PetriNetUnfolder]: 164265/246298 cut-off events. [2022-12-13 18:47:59,360 INFO L131 PetriNetUnfolder]: For 280567/280619 co-relation queries the response was YES. [2022-12-13 18:47:59,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 693054 conditions, 246298 events. 164265/246298 cut-off events. For 280567/280619 co-relation queries the response was YES. Maximal size of possible extension queue 6709. Compared 2115642 event pairs, 35285 based on Foata normal form. 7501/249715 useless extension candidates. Maximal degree in co-relation 693033. Up to 131996 conditions per place. [2022-12-13 18:48:00,750 INFO L137 encePairwiseOnDemand]: 403/427 looper letters, 279 selfloop transitions, 69 changer transitions 0/356 dead transitions. [2022-12-13 18:48:00,750 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 356 transitions, 2259 flow [2022-12-13 18:48:00,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 18:48:00,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-13 18:48:00,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2003 transitions. [2022-12-13 18:48:00,755 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5212073900598491 [2022-12-13 18:48:00,755 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2003 transitions. [2022-12-13 18:48:00,756 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2003 transitions. [2022-12-13 18:48:00,757 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:48:00,757 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2003 transitions. [2022-12-13 18:48:00,760 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 222.55555555555554) internal successors, (2003), 9 states have internal predecessors, (2003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:48:00,765 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 427.0) internal successors, (4270), 10 states have internal predecessors, (4270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:48:00,766 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 427.0) internal successors, (4270), 10 states have internal predecessors, (4270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:48:00,766 INFO L175 Difference]: Start difference. First operand has 86 places, 97 transitions, 515 flow. Second operand 9 states and 2003 transitions. [2022-12-13 18:48:00,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 356 transitions, 2259 flow [2022-12-13 18:48:01,771 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 356 transitions, 2161 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 18:48:01,774 INFO L231 Difference]: Finished difference. Result has 99 places, 150 transitions, 1175 flow [2022-12-13 18:48:01,774 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=427, PETRI_DIFFERENCE_MINUEND_FLOW=473, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1175, PETRI_PLACES=99, PETRI_TRANSITIONS=150} [2022-12-13 18:48:01,774 INFO L288 CegarLoopForPetriNet]: 73 programPoint places, 26 predicate places. [2022-12-13 18:48:01,774 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 150 transitions, 1175 flow [2022-12-13 18:48:01,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 189.66666666666666) internal successors, (1138), 6 states have internal predecessors, (1138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:48:01,775 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:48:01,775 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:48:01,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-13 18:48:01,775 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-12-13 18:48:01,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:48:01,775 INFO L85 PathProgramCache]: Analyzing trace with hash -1117538572, now seen corresponding path program 1 times [2022-12-13 18:48:01,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:48:01,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941106648] [2022-12-13 18:48:01,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:48:01,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:48:01,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:48:01,886 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:48:01,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:48:01,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941106648] [2022-12-13 18:48:01,887 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941106648] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:48:01,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1483356739] [2022-12-13 18:48:01,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:48:01,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:48:01,887 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5eecc52-ec42-4d0f-9e56-6473eabc13db/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:48:01,888 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5eecc52-ec42-4d0f-9e56-6473eabc13db/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:48:01,889 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5eecc52-ec42-4d0f-9e56-6473eabc13db/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 18:48:01,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:48:01,970 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 14 conjunts are in the unsatisfiable core [2022-12-13 18:48:01,972 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:48:02,018 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-13 18:48:02,019 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-12-13 18:48:02,080 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-13 18:48:02,120 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-13 18:48:02,131 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:48:02,131 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 18:48:02,131 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1483356739] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:48:02,131 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 18:48:02,132 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 7 [2022-12-13 18:48:02,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330539740] [2022-12-13 18:48:02,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:48:02,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 18:48:02,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:48:02,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 18:48:02,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-12-13 18:48:02,242 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 427 [2022-12-13 18:48:02,244 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 150 transitions, 1175 flow. Second operand has 5 states, 5 states have (on average 194.4) internal successors, (972), 5 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:48:02,244 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:48:02,244 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 427 [2022-12-13 18:48:02,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:48:22,233 INFO L130 PetriNetUnfolder]: 155535/232159 cut-off events. [2022-12-13 18:48:22,233 INFO L131 PetriNetUnfolder]: For 544140/544267 co-relation queries the response was YES. [2022-12-13 18:48:22,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 778592 conditions, 232159 events. 155535/232159 cut-off events. For 544140/544267 co-relation queries the response was YES. Maximal size of possible extension queue 6172. Compared 1975049 event pairs, 85574 based on Foata normal form. 1214/229454 useless extension candidates. Maximal degree in co-relation 778564. Up to 172026 conditions per place. [2022-12-13 18:48:23,731 INFO L137 encePairwiseOnDemand]: 412/427 looper letters, 285 selfloop transitions, 33 changer transitions 0/326 dead transitions. [2022-12-13 18:48:23,732 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 326 transitions, 3028 flow [2022-12-13 18:48:23,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 18:48:23,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 18:48:23,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1129 transitions. [2022-12-13 18:48:23,738 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5288056206088994 [2022-12-13 18:48:23,738 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1129 transitions. [2022-12-13 18:48:23,738 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1129 transitions. [2022-12-13 18:48:23,738 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:48:23,739 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1129 transitions. [2022-12-13 18:48:23,740 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 225.8) internal successors, (1129), 5 states have internal predecessors, (1129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:48:23,742 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 427.0) internal successors, (2562), 6 states have internal predecessors, (2562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:48:23,743 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 427.0) internal successors, (2562), 6 states have internal predecessors, (2562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:48:23,743 INFO L175 Difference]: Start difference. First operand has 99 places, 150 transitions, 1175 flow. Second operand 5 states and 1129 transitions. [2022-12-13 18:48:23,743 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 326 transitions, 3028 flow [2022-12-13 18:48:25,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 326 transitions, 2957 flow, removed 14 selfloop flow, removed 2 redundant places. [2022-12-13 18:48:25,306 INFO L231 Difference]: Finished difference. Result has 102 places, 168 transitions, 1462 flow [2022-12-13 18:48:25,307 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=427, PETRI_DIFFERENCE_MINUEND_FLOW=1103, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1462, PETRI_PLACES=102, PETRI_TRANSITIONS=168} [2022-12-13 18:48:25,307 INFO L288 CegarLoopForPetriNet]: 73 programPoint places, 29 predicate places. [2022-12-13 18:48:25,307 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 168 transitions, 1462 flow [2022-12-13 18:48:25,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 194.4) internal successors, (972), 5 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:48:25,308 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:48:25,308 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:48:25,314 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5eecc52-ec42-4d0f-9e56-6473eabc13db/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 18:48:25,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5eecc52-ec42-4d0f-9e56-6473eabc13db/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-12-13 18:48:25,510 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)] === [2022-12-13 18:48:25,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:48:25,511 INFO L85 PathProgramCache]: Analyzing trace with hash -1117538571, now seen corresponding path program 1 times [2022-12-13 18:48:25,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:48:25,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38289987] [2022-12-13 18:48:25,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:48:25,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:48:25,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:48:25,645 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:48:25,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:48:25,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38289987] [2022-12-13 18:48:25,645 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38289987] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:48:25,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [564117553] [2022-12-13 18:48:25,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:48:25,646 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:48:25,646 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5eecc52-ec42-4d0f-9e56-6473eabc13db/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:48:25,647 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5eecc52-ec42-4d0f-9e56-6473eabc13db/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:48:25,648 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5eecc52-ec42-4d0f-9e56-6473eabc13db/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 18:48:25,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:48:25,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 17 conjunts are in the unsatisfiable core [2022-12-13 18:48:25,724 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:48:25,734 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-13 18:48:25,735 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-12-13 18:48:25,753 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-13 18:48:25,818 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2022-12-13 18:48:25,847 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-13 18:48:25,857 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:48:25,857 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 18:48:25,857 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [564117553] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:48:25,857 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 18:48:25,857 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 8 [2022-12-13 18:48:25,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798769637] [2022-12-13 18:48:25,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:48:25,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 18:48:25,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:48:25,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 18:48:25,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-12-13 18:48:25,971 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 427 [2022-12-13 18:48:25,972 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 168 transitions, 1462 flow. Second operand has 6 states, 6 states have (on average 191.0) internal successors, (1146), 6 states have internal predecessors, (1146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:48:25,972 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:48:25,972 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 427 [2022-12-13 18:48:25,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:48:45,990 INFO L130 PetriNetUnfolder]: 153040/228624 cut-off events. [2022-12-13 18:48:45,991 INFO L131 PetriNetUnfolder]: For 599214/599265 co-relation queries the response was YES. [2022-12-13 18:48:46,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 799235 conditions, 228624 events. 153040/228624 cut-off events. For 599214/599265 co-relation queries the response was YES. Maximal size of possible extension queue 6091. Compared 1923927 event pairs, 62631 based on Foata normal form. 343/225113 useless extension candidates. Maximal degree in co-relation 799204. Up to 218604 conditions per place. [2022-12-13 18:48:47,621 INFO L137 encePairwiseOnDemand]: 416/427 looper letters, 213 selfloop transitions, 33 changer transitions 0/254 dead transitions. [2022-12-13 18:48:47,621 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 254 transitions, 2455 flow [2022-12-13 18:48:47,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 18:48:47,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 18:48:47,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1269 transitions. [2022-12-13 18:48:47,625 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4953161592505855 [2022-12-13 18:48:47,625 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1269 transitions. [2022-12-13 18:48:47,625 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1269 transitions. [2022-12-13 18:48:47,625 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:48:47,625 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1269 transitions. [2022-12-13 18:48:47,628 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 211.5) internal successors, (1269), 6 states have internal predecessors, (1269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:48:47,630 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 427.0) internal successors, (2989), 7 states have internal predecessors, (2989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:48:47,630 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 427.0) internal successors, (2989), 7 states have internal predecessors, (2989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:48:47,630 INFO L175 Difference]: Start difference. First operand has 102 places, 168 transitions, 1462 flow. Second operand 6 states and 1269 transitions. [2022-12-13 18:48:47,630 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 254 transitions, 2455 flow [2022-12-13 18:49:06,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 254 transitions, 2442 flow, removed 3 selfloop flow, removed 1 redundant places. [2022-12-13 18:49:06,327 INFO L231 Difference]: Finished difference. Result has 107 places, 185 transitions, 1726 flow [2022-12-13 18:49:06,327 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=427, PETRI_DIFFERENCE_MINUEND_FLOW=1449, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1726, PETRI_PLACES=107, PETRI_TRANSITIONS=185} [2022-12-13 18:49:06,328 INFO L288 CegarLoopForPetriNet]: 73 programPoint places, 34 predicate places. [2022-12-13 18:49:06,328 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 185 transitions, 1726 flow [2022-12-13 18:49:06,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 191.0) internal successors, (1146), 6 states have internal predecessors, (1146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:49:06,328 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:49:06,328 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2022-12-13 18:49:06,332 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5eecc52-ec42-4d0f-9e56-6473eabc13db/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 18:49:06,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5eecc52-ec42-4d0f-9e56-6473eabc13db/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-12-13 18:49:06,530 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-12-13 18:49:06,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:49:06,531 INFO L85 PathProgramCache]: Analyzing trace with hash 2114936629, now seen corresponding path program 1 times [2022-12-13 18:49:06,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:49:06,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480891178] [2022-12-13 18:49:06,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:49:06,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:49:06,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 18:49:06,548 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 18:49:06,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 18:49:06,558 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 18:49:06,558 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 18:49:06,558 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 21 remaining) [2022-12-13 18:49:06,558 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 21 remaining) [2022-12-13 18:49:06,558 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 21 remaining) [2022-12-13 18:49:06,558 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 21 remaining) [2022-12-13 18:49:06,559 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 21 remaining) [2022-12-13 18:49:06,559 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 21 remaining) [2022-12-13 18:49:06,559 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 21 remaining) [2022-12-13 18:49:06,559 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 21 remaining) [2022-12-13 18:49:06,559 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 21 remaining) [2022-12-13 18:49:06,559 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 21 remaining) [2022-12-13 18:49:06,559 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 21 remaining) [2022-12-13 18:49:06,559 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 21 remaining) [2022-12-13 18:49:06,559 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 21 remaining) [2022-12-13 18:49:06,559 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 21 remaining) [2022-12-13 18:49:06,559 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 21 remaining) [2022-12-13 18:49:06,559 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 21 remaining) [2022-12-13 18:49:06,560 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 21 remaining) [2022-12-13 18:49:06,560 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 21 remaining) [2022-12-13 18:49:06,560 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 21 remaining) [2022-12-13 18:49:06,560 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 21 remaining) [2022-12-13 18:49:06,560 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 21 remaining) [2022-12-13 18:49:06,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-12-13 18:49:06,560 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:49:06,561 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-13 18:49:06,561 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-12-13 18:49:06,584 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-12-13 18:49:06,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 255 places, 279 transitions, 602 flow [2022-12-13 18:49:06,656 INFO L130 PetriNetUnfolder]: 81/708 cut-off events. [2022-12-13 18:49:06,656 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2022-12-13 18:49:06,660 INFO L83 FinitePrefix]: Finished finitePrefix Result has 763 conditions, 708 events. 81/708 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2874 event pairs, 6 based on Foata normal form. 0/573 useless extension candidates. Maximal degree in co-relation 483. Up to 32 conditions per place. [2022-12-13 18:49:06,660 INFO L82 GeneralOperation]: Start removeDead. Operand has 255 places, 279 transitions, 602 flow [2022-12-13 18:49:06,664 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 255 places, 279 transitions, 602 flow [2022-12-13 18:49:06,664 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 18:49:06,665 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 255 places, 279 transitions, 602 flow [2022-12-13 18:49:06,665 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 255 places, 279 transitions, 602 flow [2022-12-13 18:49:06,665 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 255 places, 279 transitions, 602 flow [2022-12-13 18:49:06,734 INFO L130 PetriNetUnfolder]: 81/708 cut-off events. [2022-12-13 18:49:06,734 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2022-12-13 18:49:06,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 763 conditions, 708 events. 81/708 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2874 event pairs, 6 based on Foata normal form. 0/573 useless extension candidates. Maximal degree in co-relation 483. Up to 32 conditions per place. [2022-12-13 18:49:06,755 INFO L119 LiptonReduction]: Number of co-enabled transitions 43000 [2022-12-13 18:49:10,012 INFO L134 LiptonReduction]: Checked pairs total: 106307 [2022-12-13 18:49:10,012 INFO L136 LiptonReduction]: Total number of compositions: 228 [2022-12-13 18:49:10,013 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 18:49:10,013 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;@1088a43c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 18:49:10,013 INFO L358 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2022-12-13 18:49:10,015 INFO L130 PetriNetUnfolder]: 2/14 cut-off events. [2022-12-13 18:49:10,015 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 18:49:10,015 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:49:10,015 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 18:49:10,015 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)] === [2022-12-13 18:49:10,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:49:10,015 INFO L85 PathProgramCache]: Analyzing trace with hash 1872432481, now seen corresponding path program 1 times [2022-12-13 18:49:10,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:49:10,015 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705813033] [2022-12-13 18:49:10,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:49:10,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:49:10,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:49:10,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:49:10,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:49:10,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705813033] [2022-12-13 18:49:10,029 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705813033] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:49:10,029 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:49:10,029 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 18:49:10,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888481373] [2022-12-13 18:49:10,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:49:10,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:49:10,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:49:10,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:49:10,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:49:10,037 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 237 out of 507 [2022-12-13 18:49:10,038 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 112 transitions, 268 flow. Second operand has 3 states, 3 states have (on average 238.33333333333334) internal successors, (715), 3 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) [2022-12-13 18:49:10,038 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:49:10,038 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 237 of 507 [2022-12-13 18:49:10,038 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand