./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_36-indirect_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f7268a-afac-46a2-870e-240ff9061845/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f7268a-afac-46a2-870e-240ff9061845/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f7268a-afac-46a2-870e-240ff9061845/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f7268a-afac-46a2-870e-240ff9061845/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_36-indirect_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f7268a-afac-46a2-870e-240ff9061845/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f7268a-afac-46a2-870e-240ff9061845/bin/uautomizer-TMbwUNV5ro --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3eff698bae51c39e8a3a4c763800dbda831dabb73a169fa31c8e326faee47cd8 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-18 19:55:11,858 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 19:55:11,860 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 19:55:11,883 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 19:55:11,884 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 19:55:11,885 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 19:55:11,887 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 19:55:11,889 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 19:55:11,891 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 19:55:11,892 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 19:55:11,894 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 19:55:11,895 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 19:55:11,896 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 19:55:11,897 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 19:55:11,899 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 19:55:11,900 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 19:55:11,901 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 19:55:11,903 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 19:55:11,905 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 19:55:11,907 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 19:55:11,909 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 19:55:11,911 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 19:55:11,912 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 19:55:11,913 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 19:55:11,918 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 19:55:11,919 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 19:55:11,919 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 19:55:11,920 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 19:55:11,921 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 19:55:11,922 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 19:55:11,923 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 19:55:11,924 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 19:55:11,925 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 19:55:11,926 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 19:55:11,927 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 19:55:11,928 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 19:55:11,929 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 19:55:11,929 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 19:55:11,929 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 19:55:11,931 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 19:55:11,932 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 19:55:11,942 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f7268a-afac-46a2-870e-240ff9061845/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-18 19:55:11,981 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 19:55:11,981 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 19:55:11,981 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 19:55:11,982 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 19:55:11,982 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 19:55:11,983 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 19:55:11,983 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 19:55:11,984 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 19:55:11,984 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 19:55:11,984 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 19:55:11,984 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 19:55:11,989 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 19:55:11,990 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 19:55:11,990 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 19:55:11,990 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 19:55:11,990 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 19:55:11,991 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 19:55:11,991 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 19:55:11,991 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-18 19:55:11,991 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 19:55:11,991 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 19:55:11,992 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 19:55:11,992 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 19:55:11,993 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 19:55:11,993 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 19:55:11,993 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 19:55:11,993 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:55:11,994 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 19:55:11,995 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 19:55:11,995 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 19:55:11,995 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 19:55:11,995 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 19:55:11,996 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 19:55:11,996 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 19:55:11,997 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 19:55:11,997 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f7268a-afac-46a2-870e-240ff9061845/bin/uautomizer-TMbwUNV5ro/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f7268a-afac-46a2-870e-240ff9061845/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3eff698bae51c39e8a3a4c763800dbda831dabb73a169fa31c8e326faee47cd8 [2022-11-18 19:55:12,395 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 19:55:12,429 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 19:55:12,433 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 19:55:12,434 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 19:55:12,436 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 19:55:12,437 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f7268a-afac-46a2-870e-240ff9061845/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/goblint-regression/28-race_reach_36-indirect_racefree.i [2022-11-18 19:55:12,529 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f7268a-afac-46a2-870e-240ff9061845/bin/uautomizer-TMbwUNV5ro/data/2415897a5/0fd528c1a82e46efbb057a6e22cb6ac3/FLAGce405f184 [2022-11-18 19:55:13,322 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 19:55:13,323 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f7268a-afac-46a2-870e-240ff9061845/sv-benchmarks/c/goblint-regression/28-race_reach_36-indirect_racefree.i [2022-11-18 19:55:13,348 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f7268a-afac-46a2-870e-240ff9061845/bin/uautomizer-TMbwUNV5ro/data/2415897a5/0fd528c1a82e46efbb057a6e22cb6ac3/FLAGce405f184 [2022-11-18 19:55:13,511 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f7268a-afac-46a2-870e-240ff9061845/bin/uautomizer-TMbwUNV5ro/data/2415897a5/0fd528c1a82e46efbb057a6e22cb6ac3 [2022-11-18 19:55:13,514 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 19:55:13,515 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 19:55:13,522 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 19:55:13,522 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 19:55:13,526 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 19:55:13,528 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:55:13" (1/1) ... [2022-11-18 19:55:13,530 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4424c8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:55:13, skipping insertion in model container [2022-11-18 19:55:13,531 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:55:13" (1/1) ... [2022-11-18 19:55:13,540 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 19:55:13,581 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 19:55:14,024 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f7268a-afac-46a2-870e-240ff9061845/sv-benchmarks/c/goblint-regression/28-race_reach_36-indirect_racefree.i[30176,30189] [2022-11-18 19:55:14,052 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:55:14,071 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 19:55:14,142 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f7268a-afac-46a2-870e-240ff9061845/sv-benchmarks/c/goblint-regression/28-race_reach_36-indirect_racefree.i[30176,30189] [2022-11-18 19:55:14,165 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:55:14,226 INFO L208 MainTranslator]: Completed translation [2022-11-18 19:55:14,226 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:55:14 WrapperNode [2022-11-18 19:55:14,227 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 19:55:14,228 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 19:55:14,228 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 19:55:14,228 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 19:55:14,237 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:55:14" (1/1) ... [2022-11-18 19:55:14,262 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:55:14" (1/1) ... [2022-11-18 19:55:14,294 INFO L138 Inliner]: procedures = 170, calls = 37, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 84 [2022-11-18 19:55:14,295 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 19:55:14,296 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 19:55:14,296 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 19:55:14,296 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 19:55:14,308 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:55:14" (1/1) ... [2022-11-18 19:55:14,308 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:55:14" (1/1) ... [2022-11-18 19:55:14,312 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:55:14" (1/1) ... [2022-11-18 19:55:14,312 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:55:14" (1/1) ... [2022-11-18 19:55:14,318 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:55:14" (1/1) ... [2022-11-18 19:55:14,337 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:55:14" (1/1) ... [2022-11-18 19:55:14,339 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:55:14" (1/1) ... [2022-11-18 19:55:14,340 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:55:14" (1/1) ... [2022-11-18 19:55:14,343 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 19:55:14,344 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 19:55:14,345 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 19:55:14,345 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 19:55:14,351 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:55:14" (1/1) ... [2022-11-18 19:55:14,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:55:14,373 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f7268a-afac-46a2-870e-240ff9061845/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:55:14,390 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f7268a-afac-46a2-870e-240ff9061845/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 19:55:14,403 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f7268a-afac-46a2-870e-240ff9061845/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 19:55:14,453 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 19:55:14,453 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 19:55:14,453 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-18 19:55:14,453 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 19:55:14,454 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 19:55:14,454 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-18 19:55:14,454 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-18 19:55:14,454 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 19:55:14,454 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 19:55:14,455 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 19:55:14,455 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 19:55:14,457 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-18 19:55:14,647 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 19:55:14,650 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 19:55:15,032 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 19:55:15,042 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 19:55:15,042 INFO L300 CfgBuilder]: Removed 10 assume(true) statements. [2022-11-18 19:55:15,045 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:55:15 BoogieIcfgContainer [2022-11-18 19:55:15,046 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 19:55:15,048 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 19:55:15,049 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 19:55:15,053 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 19:55:15,054 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 07:55:13" (1/3) ... [2022-11-18 19:55:15,055 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74dc4494 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:55:15, skipping insertion in model container [2022-11-18 19:55:15,055 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:55:14" (2/3) ... [2022-11-18 19:55:15,056 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74dc4494 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:55:15, skipping insertion in model container [2022-11-18 19:55:15,056 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:55:15" (3/3) ... [2022-11-18 19:55:15,058 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_36-indirect_racefree.i [2022-11-18 19:55:15,069 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 19:55:15,082 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 19:55:15,082 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-11-18 19:55:15,083 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 19:55:15,162 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-11-18 19:55:15,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 123 places, 132 transitions, 272 flow [2022-11-18 19:55:15,316 INFO L130 PetriNetUnfolder]: 17/169 cut-off events. [2022-11-18 19:55:15,317 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-18 19:55:15,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 175 conditions, 169 events. 17/169 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 408 event pairs, 0 based on Foata normal form. 0/141 useless extension candidates. Maximal degree in co-relation 86. Up to 4 conditions per place. [2022-11-18 19:55:15,330 INFO L82 GeneralOperation]: Start removeDead. Operand has 123 places, 132 transitions, 272 flow [2022-11-18 19:55:15,338 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 121 places, 129 transitions, 266 flow [2022-11-18 19:55:15,351 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 19:55:15,359 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;@3be640f9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 19:55:15,359 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2022-11-18 19:55:15,384 INFO L130 PetriNetUnfolder]: 2/67 cut-off events. [2022-11-18 19:55:15,384 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 19:55:15,384 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:55:15,385 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:55:15,386 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-18 19:55:15,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:55:15,393 INFO L85 PathProgramCache]: Analyzing trace with hash 1674277181, now seen corresponding path program 1 times [2022-11-18 19:55:15,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:55:15,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417688041] [2022-11-18 19:55:15,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:55:15,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:55:15,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:15,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:55:15,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:55:15,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417688041] [2022-11-18 19:55:15,996 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417688041] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:55:15,996 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:55:15,996 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:55:15,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988624312] [2022-11-18 19:55:16,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:55:16,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:55:16,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:55:16,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:55:16,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:55:16,067 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 132 [2022-11-18 19:55:16,071 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 129 transitions, 266 flow. Second operand has 4 states, 4 states have (on average 107.75) internal successors, (431), 4 states have internal predecessors, (431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:55:16,071 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:55:16,071 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 132 [2022-11-18 19:55:16,073 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:55:16,178 INFO L130 PetriNetUnfolder]: 0/119 cut-off events. [2022-11-18 19:55:16,179 INFO L131 PetriNetUnfolder]: For 12/29 co-relation queries the response was YES. [2022-11-18 19:55:16,179 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140 conditions, 119 events. 0/119 cut-off events. For 12/29 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 109 event pairs, 0 based on Foata normal form. 41/152 useless extension candidates. Maximal degree in co-relation 0. Up to 7 conditions per place. [2022-11-18 19:55:16,181 INFO L137 encePairwiseOnDemand]: 114/132 looper letters, 10 selfloop transitions, 4 changer transitions 0/117 dead transitions. [2022-11-18 19:55:16,182 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 117 transitions, 270 flow [2022-11-18 19:55:16,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:55:16,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 19:55:16,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 577 transitions. [2022-11-18 19:55:16,202 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8742424242424243 [2022-11-18 19:55:16,203 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 577 transitions. [2022-11-18 19:55:16,204 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 577 transitions. [2022-11-18 19:55:16,206 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:55:16,210 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 577 transitions. [2022-11-18 19:55:16,214 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 115.4) internal successors, (577), 5 states have internal predecessors, (577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:55:16,223 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 132.0) internal successors, (792), 6 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:55:16,224 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 132.0) internal successors, (792), 6 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:55:16,227 INFO L175 Difference]: Start difference. First operand has 121 places, 129 transitions, 266 flow. Second operand 5 states and 577 transitions. [2022-11-18 19:55:16,228 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 117 transitions, 270 flow [2022-11-18 19:55:16,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 117 transitions, 270 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 19:55:16,237 INFO L231 Difference]: Finished difference. Result has 123 places, 115 transitions, 250 flow [2022-11-18 19:55:16,239 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=250, PETRI_PLACES=123, PETRI_TRANSITIONS=115} [2022-11-18 19:55:16,243 INFO L288 CegarLoopForPetriNet]: 121 programPoint places, 2 predicate places. [2022-11-18 19:55:16,244 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 115 transitions, 250 flow [2022-11-18 19:55:16,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 107.75) internal successors, (431), 4 states have internal predecessors, (431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:55:16,245 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:55:16,245 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:55:16,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 19:55:16,246 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-18 19:55:16,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:55:16,247 INFO L85 PathProgramCache]: Analyzing trace with hash 1256168869, now seen corresponding path program 1 times [2022-11-18 19:55:16,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:55:16,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395861561] [2022-11-18 19:55:16,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:55:16,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:55:16,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:17,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:55:17,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:55:17,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395861561] [2022-11-18 19:55:17,361 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395861561] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:55:17,361 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:55:17,361 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-18 19:55:17,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113152284] [2022-11-18 19:55:17,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:55:17,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-18 19:55:17,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:55:17,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-18 19:55:17,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2022-11-18 19:55:17,380 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 132 [2022-11-18 19:55:17,382 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 115 transitions, 250 flow. Second operand has 13 states, 13 states have (on average 71.53846153846153) internal successors, (930), 13 states have internal predecessors, (930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:55:17,383 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:55:17,383 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 132 [2022-11-18 19:55:17,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:55:18,261 INFO L130 PetriNetUnfolder]: 97/482 cut-off events. [2022-11-18 19:55:18,262 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-18 19:55:18,264 INFO L83 FinitePrefix]: Finished finitePrefix Result has 751 conditions, 482 events. 97/482 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 2631 event pairs, 6 based on Foata normal form. 0/447 useless extension candidates. Maximal degree in co-relation 664. Up to 86 conditions per place. [2022-11-18 19:55:18,267 INFO L137 encePairwiseOnDemand]: 116/132 looper letters, 75 selfloop transitions, 23 changer transitions 2/164 dead transitions. [2022-11-18 19:55:18,267 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 164 transitions, 548 flow [2022-11-18 19:55:18,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-18 19:55:18,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-11-18 19:55:18,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1277 transitions. [2022-11-18 19:55:18,273 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5690730837789661 [2022-11-18 19:55:18,273 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1277 transitions. [2022-11-18 19:55:18,274 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1277 transitions. [2022-11-18 19:55:18,275 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:55:18,275 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1277 transitions. [2022-11-18 19:55:18,279 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 75.11764705882354) internal successors, (1277), 17 states have internal predecessors, (1277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:55:18,286 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 132.0) internal successors, (2376), 18 states have internal predecessors, (2376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:55:18,288 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 132.0) internal successors, (2376), 18 states have internal predecessors, (2376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:55:18,289 INFO L175 Difference]: Start difference. First operand has 123 places, 115 transitions, 250 flow. Second operand 17 states and 1277 transitions. [2022-11-18 19:55:18,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 164 transitions, 548 flow [2022-11-18 19:55:18,291 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 164 transitions, 540 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-18 19:55:18,295 INFO L231 Difference]: Finished difference. Result has 139 places, 124 transitions, 338 flow [2022-11-18 19:55:18,295 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=338, PETRI_PLACES=139, PETRI_TRANSITIONS=124} [2022-11-18 19:55:18,296 INFO L288 CegarLoopForPetriNet]: 121 programPoint places, 18 predicate places. [2022-11-18 19:55:18,297 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 124 transitions, 338 flow [2022-11-18 19:55:18,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 71.53846153846153) internal successors, (930), 13 states have internal predecessors, (930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:55:18,298 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:55:18,298 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:55:18,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 19:55:18,299 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-18 19:55:18,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:55:18,300 INFO L85 PathProgramCache]: Analyzing trace with hash -829214326, now seen corresponding path program 1 times [2022-11-18 19:55:18,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:55:18,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499939426] [2022-11-18 19:55:18,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:55:18,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:55:18,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 19:55:18,323 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 19:55:18,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 19:55:18,365 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 19:55:18,366 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-18 19:55:18,367 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2022-11-18 19:55:18,370 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2022-11-18 19:55:18,370 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2022-11-18 19:55:18,371 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 13 remaining) [2022-11-18 19:55:18,371 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 13 remaining) [2022-11-18 19:55:18,372 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 13 remaining) [2022-11-18 19:55:18,372 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 13 remaining) [2022-11-18 19:55:18,372 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 13 remaining) [2022-11-18 19:55:18,373 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 13 remaining) [2022-11-18 19:55:18,373 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 13 remaining) [2022-11-18 19:55:18,374 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 13 remaining) [2022-11-18 19:55:18,374 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2022-11-18 19:55:18,374 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2022-11-18 19:55:18,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 19:55:18,375 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-11-18 19:55:18,379 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-18 19:55:18,379 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-18 19:55:18,424 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-18 19:55:18,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 160 places, 174 transitions, 366 flow [2022-11-18 19:55:18,477 INFO L130 PetriNetUnfolder]: 31/285 cut-off events. [2022-11-18 19:55:18,478 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-18 19:55:18,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 299 conditions, 285 events. 31/285 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 876 event pairs, 0 based on Foata normal form. 0/232 useless extension candidates. Maximal degree in co-relation 171. Up to 8 conditions per place. [2022-11-18 19:55:18,482 INFO L82 GeneralOperation]: Start removeDead. Operand has 160 places, 174 transitions, 366 flow [2022-11-18 19:55:18,486 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 160 places, 174 transitions, 366 flow [2022-11-18 19:55:18,488 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 19:55:18,489 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;@3be640f9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 19:55:18,490 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2022-11-18 19:55:18,498 INFO L130 PetriNetUnfolder]: 2/67 cut-off events. [2022-11-18 19:55:18,498 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 19:55:18,498 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:55:18,499 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:55:18,499 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-18 19:55:18,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:55:18,500 INFO L85 PathProgramCache]: Analyzing trace with hash 436857829, now seen corresponding path program 1 times [2022-11-18 19:55:18,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:55:18,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853933383] [2022-11-18 19:55:18,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:55:18,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:55:18,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:18,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:55:18,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:55:18,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853933383] [2022-11-18 19:55:18,569 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853933383] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:55:18,569 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:55:18,569 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:55:18,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986282057] [2022-11-18 19:55:18,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:55:18,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:55:18,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:55:18,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:55:18,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:55:18,573 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 174 [2022-11-18 19:55:18,574 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 174 transitions, 366 flow. Second operand has 4 states, 4 states have (on average 141.75) internal successors, (567), 4 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:55:18,574 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:55:18,575 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 174 [2022-11-18 19:55:18,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:55:18,679 INFO L130 PetriNetUnfolder]: 2/234 cut-off events. [2022-11-18 19:55:18,679 INFO L131 PetriNetUnfolder]: For 34/104 co-relation queries the response was YES. [2022-11-18 19:55:18,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 277 conditions, 234 events. 2/234 cut-off events. For 34/104 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 548 event pairs, 0 based on Foata normal form. 122/332 useless extension candidates. Maximal degree in co-relation 149. Up to 21 conditions per place. [2022-11-18 19:55:18,682 INFO L137 encePairwiseOnDemand]: 150/174 looper letters, 19 selfloop transitions, 4 changer transitions 0/163 dead transitions. [2022-11-18 19:55:18,683 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 163 transitions, 390 flow [2022-11-18 19:55:18,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:55:18,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 19:55:18,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 762 transitions. [2022-11-18 19:55:18,686 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8758620689655172 [2022-11-18 19:55:18,686 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 762 transitions. [2022-11-18 19:55:18,687 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 762 transitions. [2022-11-18 19:55:18,687 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:55:18,688 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 762 transitions. [2022-11-18 19:55:18,690 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 152.4) internal successors, (762), 5 states have internal predecessors, (762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:55:18,692 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 174.0) internal successors, (1044), 6 states have internal predecessors, (1044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:55:18,693 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 174.0) internal successors, (1044), 6 states have internal predecessors, (1044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:55:18,693 INFO L175 Difference]: Start difference. First operand has 160 places, 174 transitions, 366 flow. Second operand 5 states and 762 transitions. [2022-11-18 19:55:18,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 163 transitions, 390 flow [2022-11-18 19:55:18,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 163 transitions, 390 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 19:55:18,702 INFO L231 Difference]: Finished difference. Result has 166 places, 159 transitions, 362 flow [2022-11-18 19:55:18,702 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=330, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=362, PETRI_PLACES=166, PETRI_TRANSITIONS=159} [2022-11-18 19:55:18,706 INFO L288 CegarLoopForPetriNet]: 160 programPoint places, 6 predicate places. [2022-11-18 19:55:18,707 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 159 transitions, 362 flow [2022-11-18 19:55:18,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 141.75) internal successors, (567), 4 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:55:18,713 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:55:18,713 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:55:18,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 19:55:18,714 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-18 19:55:18,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:55:18,715 INFO L85 PathProgramCache]: Analyzing trace with hash 590430507, now seen corresponding path program 1 times [2022-11-18 19:55:18,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:55:18,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424404996] [2022-11-18 19:55:18,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:55:18,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:55:18,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:19,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:55:19,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:55:19,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424404996] [2022-11-18 19:55:19,426 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424404996] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:55:19,426 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:55:19,427 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-18 19:55:19,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880127534] [2022-11-18 19:55:19,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:55:19,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-18 19:55:19,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:55:19,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-18 19:55:19,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2022-11-18 19:55:19,431 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 174 [2022-11-18 19:55:19,433 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 159 transitions, 362 flow. Second operand has 13 states, 13 states have (on average 97.53846153846153) internal successors, (1268), 13 states have internal predecessors, (1268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:55:19,433 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:55:19,434 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 174 [2022-11-18 19:55:19,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:55:22,074 INFO L130 PetriNetUnfolder]: 2990/8445 cut-off events. [2022-11-18 19:55:22,074 INFO L131 PetriNetUnfolder]: For 118/118 co-relation queries the response was YES. [2022-11-18 19:55:22,104 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13507 conditions, 8445 events. 2990/8445 cut-off events. For 118/118 co-relation queries the response was YES. Maximal size of possible extension queue 327. Compared 85097 event pairs, 796 based on Foata normal form. 0/7758 useless extension candidates. Maximal degree in co-relation 13414. Up to 2581 conditions per place. [2022-11-18 19:55:22,158 INFO L137 encePairwiseOnDemand]: 157/174 looper letters, 190 selfloop transitions, 32 changer transitions 0/320 dead transitions. [2022-11-18 19:55:22,158 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 320 transitions, 1162 flow [2022-11-18 19:55:22,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-18 19:55:22,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-11-18 19:55:22,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2035 transitions. [2022-11-18 19:55:22,167 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6155474894131882 [2022-11-18 19:55:22,167 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2035 transitions. [2022-11-18 19:55:22,167 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2035 transitions. [2022-11-18 19:55:22,169 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:55:22,169 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2035 transitions. [2022-11-18 19:55:22,177 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 107.10526315789474) internal successors, (2035), 19 states have internal predecessors, (2035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:55:22,184 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 174.0) internal successors, (3480), 20 states have internal predecessors, (3480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:55:22,186 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 174.0) internal successors, (3480), 20 states have internal predecessors, (3480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:55:22,186 INFO L175 Difference]: Start difference. First operand has 166 places, 159 transitions, 362 flow. Second operand 19 states and 2035 transitions. [2022-11-18 19:55:22,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 320 transitions, 1162 flow [2022-11-18 19:55:22,193 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 320 transitions, 1160 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 19:55:22,199 INFO L231 Difference]: Finished difference. Result has 193 places, 187 transitions, 581 flow [2022-11-18 19:55:22,200 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=360, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=581, PETRI_PLACES=193, PETRI_TRANSITIONS=187} [2022-11-18 19:55:22,202 INFO L288 CegarLoopForPetriNet]: 160 programPoint places, 33 predicate places. [2022-11-18 19:55:22,203 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 187 transitions, 581 flow [2022-11-18 19:55:22,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 97.53846153846153) internal successors, (1268), 13 states have internal predecessors, (1268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:55:22,204 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:55:22,204 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:55:22,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 19:55:22,205 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-18 19:55:22,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:55:22,205 INFO L85 PathProgramCache]: Analyzing trace with hash 1263439769, now seen corresponding path program 1 times [2022-11-18 19:55:22,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:55:22,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270011267] [2022-11-18 19:55:22,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:55:22,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:55:22,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:22,288 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 19:55:22,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:55:22,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270011267] [2022-11-18 19:55:22,289 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270011267] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:55:22,290 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:55:22,290 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:55:22,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502790085] [2022-11-18 19:55:22,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:55:22,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:55:22,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:55:22,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:55:22,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:55:22,295 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 174 [2022-11-18 19:55:22,296 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 187 transitions, 581 flow. Second operand has 4 states, 4 states have (on average 143.75) internal successors, (575), 4 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:55:22,296 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:55:22,297 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 174 [2022-11-18 19:55:22,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:55:22,576 INFO L130 PetriNetUnfolder]: 57/830 cut-off events. [2022-11-18 19:55:22,576 INFO L131 PetriNetUnfolder]: For 358/501 co-relation queries the response was YES. [2022-11-18 19:55:22,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1289 conditions, 830 events. 57/830 cut-off events. For 358/501 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 4957 event pairs, 17 based on Foata normal form. 21/772 useless extension candidates. Maximal degree in co-relation 1127. Up to 74 conditions per place. [2022-11-18 19:55:22,585 INFO L137 encePairwiseOnDemand]: 168/174 looper letters, 11 selfloop transitions, 8 changer transitions 0/187 dead transitions. [2022-11-18 19:55:22,586 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 187 transitions, 617 flow [2022-11-18 19:55:22,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:55:22,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 19:55:22,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 717 transitions. [2022-11-18 19:55:22,589 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8241379310344827 [2022-11-18 19:55:22,589 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 717 transitions. [2022-11-18 19:55:22,589 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 717 transitions. [2022-11-18 19:55:22,590 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:55:22,590 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 717 transitions. [2022-11-18 19:55:22,592 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 143.4) internal successors, (717), 5 states have internal predecessors, (717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:55:22,595 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 174.0) internal successors, (1044), 6 states have internal predecessors, (1044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:55:22,596 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 174.0) internal successors, (1044), 6 states have internal predecessors, (1044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:55:22,596 INFO L175 Difference]: Start difference. First operand has 193 places, 187 transitions, 581 flow. Second operand 5 states and 717 transitions. [2022-11-18 19:55:22,596 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 187 transitions, 617 flow [2022-11-18 19:55:22,606 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 187 transitions, 610 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-18 19:55:22,609 INFO L231 Difference]: Finished difference. Result has 193 places, 187 transitions, 594 flow [2022-11-18 19:55:22,609 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=570, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=594, PETRI_PLACES=193, PETRI_TRANSITIONS=187} [2022-11-18 19:55:22,614 INFO L288 CegarLoopForPetriNet]: 160 programPoint places, 33 predicate places. [2022-11-18 19:55:22,614 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 187 transitions, 594 flow [2022-11-18 19:55:22,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 143.75) internal successors, (575), 4 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:55:22,616 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:55:22,617 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:55:22,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-18 19:55:22,617 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-18 19:55:22,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:55:22,618 INFO L85 PathProgramCache]: Analyzing trace with hash 511927577, now seen corresponding path program 1 times [2022-11-18 19:55:22,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:55:22,619 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094861687] [2022-11-18 19:55:22,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:55:22,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:55:22,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:22,761 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:55:22,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:55:22,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094861687] [2022-11-18 19:55:22,761 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094861687] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:55:22,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [223034832] [2022-11-18 19:55:22,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:55:22,762 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:55:22,762 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f7268a-afac-46a2-870e-240ff9061845/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:55:22,767 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f7268a-afac-46a2-870e-240ff9061845/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:55:22,769 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f7268a-afac-46a2-870e-240ff9061845/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 19:55:22,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:22,897 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 19:55:22,900 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:55:23,018 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:55:23,018 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:55:23,019 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [223034832] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:55:23,019 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 19:55:23,019 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-18 19:55:23,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176038002] [2022-11-18 19:55:23,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:55:23,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:55:23,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:55:23,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:55:23,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:55:23,024 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 174 [2022-11-18 19:55:23,025 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 187 transitions, 594 flow. Second operand has 6 states, 6 states have (on average 142.66666666666666) internal successors, (856), 6 states have internal predecessors, (856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:55:23,025 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:55:23,026 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 174 [2022-11-18 19:55:23,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:55:23,273 INFO L130 PetriNetUnfolder]: 57/825 cut-off events. [2022-11-18 19:55:23,273 INFO L131 PetriNetUnfolder]: For 365/497 co-relation queries the response was YES. [2022-11-18 19:55:23,277 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1292 conditions, 825 events. 57/825 cut-off events. For 365/497 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 4926 event pairs, 17 based on Foata normal form. 10/756 useless extension candidates. Maximal degree in co-relation 1130. Up to 74 conditions per place. [2022-11-18 19:55:23,282 INFO L137 encePairwiseOnDemand]: 169/174 looper letters, 15 selfloop transitions, 6 changer transitions 0/189 dead transitions. [2022-11-18 19:55:23,282 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 189 transitions, 638 flow [2022-11-18 19:55:23,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 19:55:23,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 19:55:23,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1002 transitions. [2022-11-18 19:55:23,286 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8226600985221675 [2022-11-18 19:55:23,286 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1002 transitions. [2022-11-18 19:55:23,286 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1002 transitions. [2022-11-18 19:55:23,287 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:55:23,287 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1002 transitions. [2022-11-18 19:55:23,290 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 143.14285714285714) internal successors, (1002), 7 states have internal predecessors, (1002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:55:23,293 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 174.0) internal successors, (1392), 8 states have internal predecessors, (1392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:55:23,294 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 174.0) internal successors, (1392), 8 states have internal predecessors, (1392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:55:23,294 INFO L175 Difference]: Start difference. First operand has 193 places, 187 transitions, 594 flow. Second operand 7 states and 1002 transitions. [2022-11-18 19:55:23,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 189 transitions, 638 flow [2022-11-18 19:55:23,298 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 189 transitions, 626 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 19:55:23,301 INFO L231 Difference]: Finished difference. Result has 195 places, 186 transitions, 590 flow [2022-11-18 19:55:23,302 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=578, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=590, PETRI_PLACES=195, PETRI_TRANSITIONS=186} [2022-11-18 19:55:23,303 INFO L288 CegarLoopForPetriNet]: 160 programPoint places, 35 predicate places. [2022-11-18 19:55:23,303 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 186 transitions, 590 flow [2022-11-18 19:55:23,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 142.66666666666666) internal successors, (856), 6 states have internal predecessors, (856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:55:23,304 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:55:23,304 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:55:23,315 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f7268a-afac-46a2-870e-240ff9061845/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-18 19:55:23,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f7268a-afac-46a2-870e-240ff9061845/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:55:23,512 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-18 19:55:23,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:55:23,512 INFO L85 PathProgramCache]: Analyzing trace with hash -2102946488, now seen corresponding path program 1 times [2022-11-18 19:55:23,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:55:23,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133974558] [2022-11-18 19:55:23,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:55:23,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:55:23,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:23,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:55:23,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:55:23,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133974558] [2022-11-18 19:55:23,669 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133974558] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:55:23,670 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:55:23,670 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:55:23,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667395750] [2022-11-18 19:55:23,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:55:23,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:55:23,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:55:23,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:55:23,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:55:23,673 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 174 [2022-11-18 19:55:23,674 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 186 transitions, 590 flow. Second operand has 6 states, 6 states have (on average 117.33333333333333) internal successors, (704), 6 states have internal predecessors, (704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:55:23,674 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:55:23,674 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 174 [2022-11-18 19:55:23,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:55:25,410 INFO L130 PetriNetUnfolder]: 1616/6614 cut-off events. [2022-11-18 19:55:25,410 INFO L131 PetriNetUnfolder]: For 5514/5865 co-relation queries the response was YES. [2022-11-18 19:55:25,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12263 conditions, 6614 events. 1616/6614 cut-off events. For 5514/5865 co-relation queries the response was YES. Maximal size of possible extension queue 299. Compared 70470 event pairs, 511 based on Foata normal form. 32/5820 useless extension candidates. Maximal degree in co-relation 11568. Up to 1133 conditions per place. [2022-11-18 19:55:25,466 INFO L137 encePairwiseOnDemand]: 161/174 looper letters, 128 selfloop transitions, 34 changer transitions 0/288 dead transitions. [2022-11-18 19:55:25,466 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 288 transitions, 1319 flow [2022-11-18 19:55:25,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 19:55:25,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-18 19:55:25,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1386 transitions. [2022-11-18 19:55:25,471 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7241379310344828 [2022-11-18 19:55:25,471 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1386 transitions. [2022-11-18 19:55:25,471 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1386 transitions. [2022-11-18 19:55:25,472 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:55:25,473 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1386 transitions. [2022-11-18 19:55:25,476 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 126.0) internal successors, (1386), 11 states have internal predecessors, (1386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:55:25,481 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 174.0) internal successors, (2088), 12 states have internal predecessors, (2088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:55:25,482 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 174.0) internal successors, (2088), 12 states have internal predecessors, (2088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:55:25,482 INFO L175 Difference]: Start difference. First operand has 195 places, 186 transitions, 590 flow. Second operand 11 states and 1386 transitions. [2022-11-18 19:55:25,482 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 288 transitions, 1319 flow [2022-11-18 19:55:25,512 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 288 transitions, 1308 flow, removed 1 selfloop flow, removed 5 redundant places. [2022-11-18 19:55:25,516 INFO L231 Difference]: Finished difference. Result has 207 places, 213 transitions, 865 flow [2022-11-18 19:55:25,517 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=579, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=865, PETRI_PLACES=207, PETRI_TRANSITIONS=213} [2022-11-18 19:55:25,517 INFO L288 CegarLoopForPetriNet]: 160 programPoint places, 47 predicate places. [2022-11-18 19:55:25,518 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 213 transitions, 865 flow [2022-11-18 19:55:25,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 117.33333333333333) internal successors, (704), 6 states have internal predecessors, (704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:55:25,519 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:55:25,519 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:55:25,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-18 19:55:25,520 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-18 19:55:25,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:55:25,520 INFO L85 PathProgramCache]: Analyzing trace with hash 1709488671, now seen corresponding path program 1 times [2022-11-18 19:55:25,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:55:25,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884403054] [2022-11-18 19:55:25,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:55:25,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:55:25,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:26,113 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-18 19:55:26,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:55:26,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884403054] [2022-11-18 19:55:26,114 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884403054] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:55:26,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1829154077] [2022-11-18 19:55:26,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:55:26,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:55:26,115 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f7268a-afac-46a2-870e-240ff9061845/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:55:26,116 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f7268a-afac-46a2-870e-240ff9061845/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:55:26,125 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f7268a-afac-46a2-870e-240ff9061845/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 19:55:26,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:26,232 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-18 19:55:26,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:55:26,573 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-18 19:55:26,575 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 [2022-11-18 19:55:26,674 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 [2022-11-18 19:55:26,834 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 [2022-11-18 19:55:26,930 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-18 19:55:26,976 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-18 19:55:26,976 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:55:27,714 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2022-11-18 19:55:27,723 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-18 19:55:27,765 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-11-18 19:55:27,765 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 13 treesize of output 12 [2022-11-18 19:55:27,799 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-18 19:55:27,800 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1829154077] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:55:27,800 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:55:27,800 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 10] total 30 [2022-11-18 19:55:27,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813756051] [2022-11-18 19:55:27,801 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:55:27,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-11-18 19:55:27,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:55:27,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-11-18 19:55:27,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=813, Unknown=6, NotChecked=0, Total=930 [2022-11-18 19:55:27,806 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 174 [2022-11-18 19:55:27,810 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 213 transitions, 865 flow. Second operand has 31 states, 31 states have (on average 97.83870967741936) internal successors, (3033), 31 states have internal predecessors, (3033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:55:27,810 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:55:27,810 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 174 [2022-11-18 19:55:27,811 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:55:34,851 INFO L130 PetriNetUnfolder]: 6989/19981 cut-off events. [2022-11-18 19:55:34,851 INFO L131 PetriNetUnfolder]: For 34367/35196 co-relation queries the response was YES. [2022-11-18 19:55:34,932 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47715 conditions, 19981 events. 6989/19981 cut-off events. For 34367/35196 co-relation queries the response was YES. Maximal size of possible extension queue 827. Compared 234587 event pairs, 1118 based on Foata normal form. 188/18862 useless extension candidates. Maximal degree in co-relation 46230. Up to 4338 conditions per place. [2022-11-18 19:55:35,020 INFO L137 encePairwiseOnDemand]: 153/174 looper letters, 344 selfloop transitions, 113 changer transitions 0/573 dead transitions. [2022-11-18 19:55:35,021 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 573 transitions, 3564 flow [2022-11-18 19:55:35,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-18 19:55:35,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-11-18 19:55:35,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 3195 transitions. [2022-11-18 19:55:35,029 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6120689655172413 [2022-11-18 19:55:35,029 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 3195 transitions. [2022-11-18 19:55:35,029 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 3195 transitions. [2022-11-18 19:55:35,031 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:55:35,032 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 3195 transitions. [2022-11-18 19:55:35,039 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 106.5) internal successors, (3195), 30 states have internal predecessors, (3195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:55:35,148 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 174.0) internal successors, (5394), 31 states have internal predecessors, (5394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:55:35,149 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 174.0) internal successors, (5394), 31 states have internal predecessors, (5394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:55:35,150 INFO L175 Difference]: Start difference. First operand has 207 places, 213 transitions, 865 flow. Second operand 30 states and 3195 transitions. [2022-11-18 19:55:35,150 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 573 transitions, 3564 flow [2022-11-18 19:55:35,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 573 transitions, 3444 flow, removed 60 selfloop flow, removed 0 redundant places. [2022-11-18 19:55:35,525 INFO L231 Difference]: Finished difference. Result has 250 places, 307 transitions, 1898 flow [2022-11-18 19:55:35,526 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=835, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=1898, PETRI_PLACES=250, PETRI_TRANSITIONS=307} [2022-11-18 19:55:35,526 INFO L288 CegarLoopForPetriNet]: 160 programPoint places, 90 predicate places. [2022-11-18 19:55:35,526 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 307 transitions, 1898 flow [2022-11-18 19:55:35,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 97.83870967741936) internal successors, (3033), 31 states have internal predecessors, (3033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:55:35,528 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:55:35,528 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:55:35,533 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f7268a-afac-46a2-870e-240ff9061845/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-18 19:55:35,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f7268a-afac-46a2-870e-240ff9061845/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:55:35,729 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-18 19:55:35,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:55:35,729 INFO L85 PathProgramCache]: Analyzing trace with hash -766831140, now seen corresponding path program 1 times [2022-11-18 19:55:35,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:55:35,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341717916] [2022-11-18 19:55:35,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:55:35,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:55:35,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:36,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:55:36,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:55:36,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341717916] [2022-11-18 19:55:36,264 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341717916] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:55:36,264 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:55:36,265 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-18 19:55:36,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732545621] [2022-11-18 19:55:36,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:55:36,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-18 19:55:36,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:55:36,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-18 19:55:36,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2022-11-18 19:55:36,267 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 174 [2022-11-18 19:55:36,269 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 307 transitions, 1898 flow. Second operand has 16 states, 16 states have (on average 90.6875) internal successors, (1451), 16 states have internal predecessors, (1451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:55:36,269 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:55:36,269 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 174 [2022-11-18 19:55:36,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:55:43,646 INFO L130 PetriNetUnfolder]: 11364/29169 cut-off events. [2022-11-18 19:55:43,646 INFO L131 PetriNetUnfolder]: For 87771/88784 co-relation queries the response was YES. [2022-11-18 19:55:43,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83800 conditions, 29169 events. 11364/29169 cut-off events. For 87771/88784 co-relation queries the response was YES. Maximal size of possible extension queue 1189. Compared 343793 event pairs, 1959 based on Foata normal form. 556/28548 useless extension candidates. Maximal degree in co-relation 83306. Up to 7702 conditions per place. [2022-11-18 19:55:43,936 INFO L137 encePairwiseOnDemand]: 150/174 looper letters, 483 selfloop transitions, 180 changer transitions 23/794 dead transitions. [2022-11-18 19:55:43,936 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 794 transitions, 6608 flow [2022-11-18 19:55:43,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-18 19:55:43,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-18 19:55:43,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 3558 transitions. [2022-11-18 19:55:43,945 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5842364532019705 [2022-11-18 19:55:43,945 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 3558 transitions. [2022-11-18 19:55:43,945 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 3558 transitions. [2022-11-18 19:55:43,947 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:55:43,947 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 3558 transitions. [2022-11-18 19:55:43,954 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 101.65714285714286) internal successors, (3558), 35 states have internal predecessors, (3558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:55:43,965 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 174.0) internal successors, (6264), 36 states have internal predecessors, (6264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:55:43,968 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 174.0) internal successors, (6264), 36 states have internal predecessors, (6264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:55:43,968 INFO L175 Difference]: Start difference. First operand has 250 places, 307 transitions, 1898 flow. Second operand 35 states and 3558 transitions. [2022-11-18 19:55:43,968 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 794 transitions, 6608 flow [2022-11-18 19:55:45,109 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 794 transitions, 6377 flow, removed 111 selfloop flow, removed 5 redundant places. [2022-11-18 19:55:45,121 INFO L231 Difference]: Finished difference. Result has 293 places, 410 transitions, 3360 flow [2022-11-18 19:55:45,122 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1857, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=3360, PETRI_PLACES=293, PETRI_TRANSITIONS=410} [2022-11-18 19:55:45,122 INFO L288 CegarLoopForPetriNet]: 160 programPoint places, 133 predicate places. [2022-11-18 19:55:45,123 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 410 transitions, 3360 flow [2022-11-18 19:55:45,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 90.6875) internal successors, (1451), 16 states have internal predecessors, (1451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:55:45,124 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:55:45,125 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:55:45,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-18 19:55:45,125 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-18 19:55:45,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:55:45,126 INFO L85 PathProgramCache]: Analyzing trace with hash -1828066546, now seen corresponding path program 1 times [2022-11-18 19:55:45,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:55:45,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866519966] [2022-11-18 19:55:45,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:55:45,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:55:45,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 19:55:45,144 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 19:55:45,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 19:55:45,163 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 19:55:45,163 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-18 19:55:45,164 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2022-11-18 19:55:45,164 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2022-11-18 19:55:45,164 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2022-11-18 19:55:45,164 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2022-11-18 19:55:45,165 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2022-11-18 19:55:45,165 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2022-11-18 19:55:45,165 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2022-11-18 19:55:45,165 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2022-11-18 19:55:45,166 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 17 remaining) [2022-11-18 19:55:45,166 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 17 remaining) [2022-11-18 19:55:45,166 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 17 remaining) [2022-11-18 19:55:45,166 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2022-11-18 19:55:45,166 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2022-11-18 19:55:45,167 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2022-11-18 19:55:45,167 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2022-11-18 19:55:45,167 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2022-11-18 19:55:45,167 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2022-11-18 19:55:45,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-18 19:55:45,168 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:55:45,168 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-18 19:55:45,169 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-18 19:55:45,212 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-18 19:55:45,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 197 places, 216 transitions, 462 flow [2022-11-18 19:55:45,298 INFO L130 PetriNetUnfolder]: 50/442 cut-off events. [2022-11-18 19:55:45,298 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-11-18 19:55:45,302 INFO L83 FinitePrefix]: Finished finitePrefix Result has 470 conditions, 442 events. 50/442 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1540 event pairs, 1 based on Foata normal form. 0/356 useless extension candidates. Maximal degree in co-relation 293. Up to 16 conditions per place. [2022-11-18 19:55:45,302 INFO L82 GeneralOperation]: Start removeDead. Operand has 197 places, 216 transitions, 462 flow [2022-11-18 19:55:45,310 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 197 places, 216 transitions, 462 flow [2022-11-18 19:55:45,311 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 19:55:45,312 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;@3be640f9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 19:55:45,312 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2022-11-18 19:55:45,319 INFO L130 PetriNetUnfolder]: 2/67 cut-off events. [2022-11-18 19:55:45,320 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 19:55:45,320 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:55:45,320 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:55:45,320 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-18 19:55:45,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:55:45,321 INFO L85 PathProgramCache]: Analyzing trace with hash 1113369101, now seen corresponding path program 1 times [2022-11-18 19:55:45,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:55:45,322 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131231389] [2022-11-18 19:55:45,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:55:45,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:55:45,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:45,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:55:45,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:55:45,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131231389] [2022-11-18 19:55:45,410 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131231389] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:55:45,410 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:55:45,410 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:55:45,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16551093] [2022-11-18 19:55:45,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:55:45,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:55:45,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:55:45,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:55:45,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:55:45,413 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 216 [2022-11-18 19:55:45,414 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 216 transitions, 462 flow. Second operand has 4 states, 4 states have (on average 175.75) internal successors, (703), 4 states have internal predecessors, (703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:55:45,415 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:55:45,415 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 216 [2022-11-18 19:55:45,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:55:45,528 INFO L130 PetriNetUnfolder]: 7/376 cut-off events. [2022-11-18 19:55:45,529 INFO L131 PetriNetUnfolder]: For 54/126 co-relation queries the response was YES. [2022-11-18 19:55:45,530 INFO L83 FinitePrefix]: Finished finitePrefix Result has 452 conditions, 376 events. 7/376 cut-off events. For 54/126 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1190 event pairs, 1 based on Foata normal form. 297/629 useless extension candidates. Maximal degree in co-relation 274. Up to 40 conditions per place. [2022-11-18 19:55:45,532 INFO L137 encePairwiseOnDemand]: 186/216 looper letters, 21 selfloop transitions, 4 changer transitions 0/199 dead transitions. [2022-11-18 19:55:45,533 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 199 transitions, 478 flow [2022-11-18 19:55:45,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:55:45,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 19:55:45,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 940 transitions. [2022-11-18 19:55:45,535 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8703703703703703 [2022-11-18 19:55:45,536 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 940 transitions. [2022-11-18 19:55:45,536 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 940 transitions. [2022-11-18 19:55:45,537 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:55:45,537 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 940 transitions. [2022-11-18 19:55:45,539 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 188.0) internal successors, (940), 5 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:55:45,541 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 216.0) internal successors, (1296), 6 states have internal predecessors, (1296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:55:45,542 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 216.0) internal successors, (1296), 6 states have internal predecessors, (1296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:55:45,542 INFO L175 Difference]: Start difference. First operand has 197 places, 216 transitions, 462 flow. Second operand 5 states and 940 transitions. [2022-11-18 19:55:45,542 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 199 transitions, 478 flow [2022-11-18 19:55:45,544 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 199 transitions, 478 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 19:55:45,547 INFO L231 Difference]: Finished difference. Result has 203 places, 195 transitions, 446 flow [2022-11-18 19:55:45,548 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=216, PETRI_DIFFERENCE_MINUEND_FLOW=414, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=446, PETRI_PLACES=203, PETRI_TRANSITIONS=195} [2022-11-18 19:55:45,549 INFO L288 CegarLoopForPetriNet]: 197 programPoint places, 6 predicate places. [2022-11-18 19:55:45,549 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 195 transitions, 446 flow [2022-11-18 19:55:45,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 175.75) internal successors, (703), 4 states have internal predecessors, (703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:55:45,550 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:55:45,550 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:55:45,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-18 19:55:45,551 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-18 19:55:45,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:55:45,551 INFO L85 PathProgramCache]: Analyzing trace with hash -936100053, now seen corresponding path program 1 times [2022-11-18 19:55:45,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:55:45,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232360895] [2022-11-18 19:55:45,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:55:45,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:55:45,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:45,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:55:45,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:55:45,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232360895] [2022-11-18 19:55:45,968 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232360895] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:55:45,968 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:55:45,968 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-18 19:55:45,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628879239] [2022-11-18 19:55:45,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:55:45,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-18 19:55:45,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:55:45,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-18 19:55:45,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2022-11-18 19:55:45,972 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 216 [2022-11-18 19:55:45,974 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 195 transitions, 446 flow. Second operand has 13 states, 13 states have (on average 123.53846153846153) internal successors, (1606), 13 states have internal predecessors, (1606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:55:45,975 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:55:45,975 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 216 [2022-11-18 19:55:45,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:56:02,170 INFO L130 PetriNetUnfolder]: 48986/111516 cut-off events. [2022-11-18 19:56:02,170 INFO L131 PetriNetUnfolder]: For 2543/2543 co-relation queries the response was YES. [2022-11-18 19:56:02,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 182260 conditions, 111516 events. 48986/111516 cut-off events. For 2543/2543 co-relation queries the response was YES. Maximal size of possible extension queue 3400. Compared 1425042 event pairs, 15939 based on Foata normal form. 0/103636 useless extension candidates. Maximal degree in co-relation 182166. Up to 38599 conditions per place. [2022-11-18 19:56:02,905 INFO L137 encePairwiseOnDemand]: 198/216 looper letters, 283 selfloop transitions, 38 changer transitions 0/445 dead transitions. [2022-11-18 19:56:02,905 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 445 transitions, 1673 flow [2022-11-18 19:56:02,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-18 19:56:02,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-11-18 19:56:02,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2628 transitions. [2022-11-18 19:56:02,911 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6403508771929824 [2022-11-18 19:56:02,911 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2628 transitions. [2022-11-18 19:56:02,912 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2628 transitions. [2022-11-18 19:56:02,913 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:56:02,913 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2628 transitions. [2022-11-18 19:56:02,921 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 138.31578947368422) internal successors, (2628), 19 states have internal predecessors, (2628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:56:02,928 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 216.0) internal successors, (4320), 20 states have internal predecessors, (4320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:56:02,929 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 216.0) internal successors, (4320), 20 states have internal predecessors, (4320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:56:02,929 INFO L175 Difference]: Start difference. First operand has 203 places, 195 transitions, 446 flow. Second operand 19 states and 2628 transitions. [2022-11-18 19:56:02,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 445 transitions, 1673 flow [2022-11-18 19:56:02,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 445 transitions, 1671 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 19:56:02,940 INFO L231 Difference]: Finished difference. Result has 230 places, 229 transitions, 709 flow [2022-11-18 19:56:02,941 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=216, PETRI_DIFFERENCE_MINUEND_FLOW=444, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=709, PETRI_PLACES=230, PETRI_TRANSITIONS=229} [2022-11-18 19:56:02,942 INFO L288 CegarLoopForPetriNet]: 197 programPoint places, 33 predicate places. [2022-11-18 19:56:02,942 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 229 transitions, 709 flow [2022-11-18 19:56:02,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 123.53846153846153) internal successors, (1606), 13 states have internal predecessors, (1606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:56:02,943 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:56:02,943 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:56:02,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-18 19:56:02,943 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-18 19:56:02,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:56:02,944 INFO L85 PathProgramCache]: Analyzing trace with hash 701521897, now seen corresponding path program 1 times [2022-11-18 19:56:02,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:56:02,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674092702] [2022-11-18 19:56:02,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:56:02,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:56:02,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:03,159 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 19:56:03,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:56:03,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674092702] [2022-11-18 19:56:03,160 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674092702] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:56:03,160 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:56:03,161 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:56:03,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317272131] [2022-11-18 19:56:03,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:56:03,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:56:03,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:56:03,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:56:03,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:56:03,165 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 216 [2022-11-18 19:56:03,166 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 229 transitions, 709 flow. Second operand has 4 states, 4 states have (on average 177.75) internal successors, (711), 4 states have internal predecessors, (711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:56:03,167 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:56:03,167 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 216 [2022-11-18 19:56:03,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:56:03,746 INFO L130 PetriNetUnfolder]: 277/2638 cut-off events. [2022-11-18 19:56:03,746 INFO L131 PetriNetUnfolder]: For 1948/2500 co-relation queries the response was YES. [2022-11-18 19:56:03,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4534 conditions, 2638 events. 277/2638 cut-off events. For 1948/2500 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 24017 event pairs, 95 based on Foata normal form. 53/2394 useless extension candidates. Maximal degree in co-relation 3951. Up to 344 conditions per place. [2022-11-18 19:56:03,775 INFO L137 encePairwiseOnDemand]: 210/216 looper letters, 13 selfloop transitions, 8 changer transitions 0/229 dead transitions. [2022-11-18 19:56:03,776 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 229 transitions, 749 flow [2022-11-18 19:56:03,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:56:03,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 19:56:03,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 889 transitions. [2022-11-18 19:56:03,779 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8231481481481482 [2022-11-18 19:56:03,779 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 889 transitions. [2022-11-18 19:56:03,779 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 889 transitions. [2022-11-18 19:56:03,780 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:56:03,780 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 889 transitions. [2022-11-18 19:56:03,782 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 177.8) internal successors, (889), 5 states have internal predecessors, (889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:56:03,784 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 216.0) internal successors, (1296), 6 states have internal predecessors, (1296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:56:03,785 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 216.0) internal successors, (1296), 6 states have internal predecessors, (1296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:56:03,785 INFO L175 Difference]: Start difference. First operand has 230 places, 229 transitions, 709 flow. Second operand 5 states and 889 transitions. [2022-11-18 19:56:03,785 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 229 transitions, 749 flow [2022-11-18 19:56:03,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 229 transitions, 742 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-18 19:56:03,798 INFO L231 Difference]: Finished difference. Result has 230 places, 229 transitions, 722 flow [2022-11-18 19:56:03,799 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=216, PETRI_DIFFERENCE_MINUEND_FLOW=698, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=722, PETRI_PLACES=230, PETRI_TRANSITIONS=229} [2022-11-18 19:56:03,799 INFO L288 CegarLoopForPetriNet]: 197 programPoint places, 33 predicate places. [2022-11-18 19:56:03,800 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 229 transitions, 722 flow [2022-11-18 19:56:03,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 177.75) internal successors, (711), 4 states have internal predecessors, (711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:56:03,800 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:56:03,800 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:56:03,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-18 19:56:03,801 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-18 19:56:03,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:56:03,801 INFO L85 PathProgramCache]: Analyzing trace with hash 272342945, now seen corresponding path program 1 times [2022-11-18 19:56:03,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:56:03,802 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473886944] [2022-11-18 19:56:03,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:56:03,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:56:03,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:03,879 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:56:03,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:56:03,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473886944] [2022-11-18 19:56:03,880 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473886944] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:56:03,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1226629652] [2022-11-18 19:56:03,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:56:03,880 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:56:03,881 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f7268a-afac-46a2-870e-240ff9061845/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:56:03,899 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f7268a-afac-46a2-870e-240ff9061845/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:56:03,917 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4f7268a-afac-46a2-870e-240ff9061845/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 19:56:03,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:03,995 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 19:56:04,002 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:56:04,059 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:56:04,060 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:56:04,060 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1226629652] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:56:04,060 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 19:56:04,060 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-18 19:56:04,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149314220] [2022-11-18 19:56:04,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:56:04,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:56:04,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:56:04,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:56:04,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:56:04,065 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 216 [2022-11-18 19:56:04,066 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 229 transitions, 722 flow. Second operand has 6 states, 6 states have (on average 176.66666666666666) internal successors, (1060), 6 states have internal predecessors, (1060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:56:04,067 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:56:04,067 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 216 [2022-11-18 19:56:04,067 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand