./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_73-funloop_hard_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76dcb35c-fd1f-4c82-9d0e-c3c9238dcceb/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76dcb35c-fd1f-4c82-9d0e-c3c9238dcceb/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76dcb35c-fd1f-4c82-9d0e-c3c9238dcceb/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76dcb35c-fd1f-4c82-9d0e-c3c9238dcceb/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_73-funloop_hard_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76dcb35c-fd1f-4c82-9d0e-c3c9238dcceb/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76dcb35c-fd1f-4c82-9d0e-c3c9238dcceb/bin/uautomizer-uyxdKDjOR8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c8af2e9e80aefb6a93651d6c869df13510f679bd9566c8571973545c9393aab5 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-13 19:55:08,607 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 19:55:08,609 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 19:55:08,621 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 19:55:08,622 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 19:55:08,622 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 19:55:08,623 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 19:55:08,624 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 19:55:08,625 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 19:55:08,626 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 19:55:08,627 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 19:55:08,628 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 19:55:08,628 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 19:55:08,629 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 19:55:08,629 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 19:55:08,630 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 19:55:08,631 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 19:55:08,631 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 19:55:08,633 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 19:55:08,634 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 19:55:08,635 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 19:55:08,636 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 19:55:08,637 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 19:55:08,638 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 19:55:08,642 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 19:55:08,642 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 19:55:08,643 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 19:55:08,644 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 19:55:08,644 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 19:55:08,645 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 19:55:08,646 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 19:55:08,646 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 19:55:08,647 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 19:55:08,648 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 19:55:08,649 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 19:55:08,649 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 19:55:08,650 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 19:55:08,650 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 19:55:08,650 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 19:55:08,651 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 19:55:08,651 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 19:55:08,652 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76dcb35c-fd1f-4c82-9d0e-c3c9238dcceb/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-12-13 19:55:08,671 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 19:55:08,672 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 19:55:08,672 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 19:55:08,672 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 19:55:08,673 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 19:55:08,673 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 19:55:08,674 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 19:55:08,674 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 19:55:08,674 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 19:55:08,674 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 19:55:08,675 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 19:55:08,675 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 19:55:08,675 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 19:55:08,675 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 19:55:08,675 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 19:55:08,676 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 19:55:08,676 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 19:55:08,676 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 19:55:08,676 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-13 19:55:08,676 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 19:55:08,676 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 19:55:08,676 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 19:55:08,676 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 19:55:08,677 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 19:55:08,677 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 19:55:08,677 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 19:55:08,677 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 19:55:08,677 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 19:55:08,677 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 19:55:08,677 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 19:55:08,678 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 19:55:08,678 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 19:55:08,678 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 19:55:08,678 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 19:55:08,678 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 19:55:08,678 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 19:55:08,679 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 19:55:08,679 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76dcb35c-fd1f-4c82-9d0e-c3c9238dcceb/bin/uautomizer-uyxdKDjOR8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76dcb35c-fd1f-4c82-9d0e-c3c9238dcceb/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c8af2e9e80aefb6a93651d6c869df13510f679bd9566c8571973545c9393aab5 [2022-12-13 19:55:08,862 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 19:55:08,883 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 19:55:08,885 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 19:55:08,886 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 19:55:08,887 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 19:55:08,888 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76dcb35c-fd1f-4c82-9d0e-c3c9238dcceb/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/goblint-regression/28-race_reach_73-funloop_hard_racefree.i [2022-12-13 19:55:11,457 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 19:55:11,637 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 19:55:11,637 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76dcb35c-fd1f-4c82-9d0e-c3c9238dcceb/sv-benchmarks/c/goblint-regression/28-race_reach_73-funloop_hard_racefree.i [2022-12-13 19:55:11,647 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76dcb35c-fd1f-4c82-9d0e-c3c9238dcceb/bin/uautomizer-uyxdKDjOR8/data/5af681bc8/b2f9d08c40d3434f9717531f1ac470da/FLAG6612225fb [2022-12-13 19:55:11,658 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76dcb35c-fd1f-4c82-9d0e-c3c9238dcceb/bin/uautomizer-uyxdKDjOR8/data/5af681bc8/b2f9d08c40d3434f9717531f1ac470da [2022-12-13 19:55:11,660 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 19:55:11,661 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 19:55:11,662 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 19:55:11,662 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 19:55:11,664 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 19:55:11,665 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 07:55:11" (1/1) ... [2022-12-13 19:55:11,666 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8853642 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:55:11, skipping insertion in model container [2022-12-13 19:55:11,666 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 07:55:11" (1/1) ... [2022-12-13 19:55:11,672 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 19:55:11,699 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 19:55:11,983 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76dcb35c-fd1f-4c82-9d0e-c3c9238dcceb/sv-benchmarks/c/goblint-regression/28-race_reach_73-funloop_hard_racefree.i[41323,41336] [2022-12-13 19:55:12,008 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 19:55:12,023 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 19:55:12,046 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76dcb35c-fd1f-4c82-9d0e-c3c9238dcceb/sv-benchmarks/c/goblint-regression/28-race_reach_73-funloop_hard_racefree.i[41323,41336] [2022-12-13 19:55:12,057 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 19:55:12,094 INFO L208 MainTranslator]: Completed translation [2022-12-13 19:55:12,095 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:55:12 WrapperNode [2022-12-13 19:55:12,095 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 19:55:12,096 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 19:55:12,096 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 19:55:12,096 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 19:55:12,101 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:55:12" (1/1) ... [2022-12-13 19:55:12,113 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:55:12" (1/1) ... [2022-12-13 19:55:12,132 INFO L138 Inliner]: procedures = 271, calls = 41, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 269 [2022-12-13 19:55:12,132 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 19:55:12,132 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 19:55:12,132 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 19:55:12,133 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 19:55:12,139 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:55:12" (1/1) ... [2022-12-13 19:55:12,140 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:55:12" (1/1) ... [2022-12-13 19:55:12,142 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:55:12" (1/1) ... [2022-12-13 19:55:12,143 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:55:12" (1/1) ... [2022-12-13 19:55:12,149 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:55:12" (1/1) ... [2022-12-13 19:55:12,155 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:55:12" (1/1) ... [2022-12-13 19:55:12,159 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:55:12" (1/1) ... [2022-12-13 19:55:12,161 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:55:12" (1/1) ... [2022-12-13 19:55:12,166 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 19:55:12,167 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 19:55:12,167 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 19:55:12,167 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 19:55:12,168 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:55:12" (1/1) ... [2022-12-13 19:55:12,173 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 19:55:12,183 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76dcb35c-fd1f-4c82-9d0e-c3c9238dcceb/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:55:12,194 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76dcb35c-fd1f-4c82-9d0e-c3c9238dcceb/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 19:55:12,196 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76dcb35c-fd1f-4c82-9d0e-c3c9238dcceb/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 19:55:12,230 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 19:55:12,230 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 19:55:12,230 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 19:55:12,231 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 19:55:12,231 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-12-13 19:55:12,231 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 19:55:12,231 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-12-13 19:55:12,231 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-12-13 19:55:12,231 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 19:55:12,231 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 19:55:12,232 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 19:55:12,233 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-13 19:55:12,347 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 19:55:12,349 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 19:55:12,657 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 19:55:12,665 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 19:55:12,665 INFO L300 CfgBuilder]: Removed 35 assume(true) statements. [2022-12-13 19:55:12,667 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 07:55:12 BoogieIcfgContainer [2022-12-13 19:55:12,667 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 19:55:12,669 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 19:55:12,669 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 19:55:12,671 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 19:55:12,671 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 07:55:11" (1/3) ... [2022-12-13 19:55:12,672 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@375b88ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 07:55:12, skipping insertion in model container [2022-12-13 19:55:12,672 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:55:12" (2/3) ... [2022-12-13 19:55:12,672 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@375b88ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 07:55:12, skipping insertion in model container [2022-12-13 19:55:12,672 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 07:55:12" (3/3) ... [2022-12-13 19:55:12,673 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_73-funloop_hard_racefree.i [2022-12-13 19:55:12,680 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 19:55:12,688 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 19:55:12,688 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 22 error locations. [2022-12-13 19:55:12,688 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 19:55:12,739 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-12-13 19:55:12,767 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 254 places, 296 transitions, 600 flow [2022-12-13 19:55:12,848 INFO L130 PetriNetUnfolder]: 73/453 cut-off events. [2022-12-13 19:55:12,848 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 19:55:12,856 INFO L83 FinitePrefix]: Finished finitePrefix Result has 459 conditions, 453 events. 73/453 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 2185 event pairs, 0 based on Foata normal form. 0/345 useless extension candidates. Maximal degree in co-relation 248. Up to 8 conditions per place. [2022-12-13 19:55:12,856 INFO L82 GeneralOperation]: Start removeDead. Operand has 254 places, 296 transitions, 600 flow [2022-12-13 19:55:12,862 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 252 places, 293 transitions, 594 flow [2022-12-13 19:55:12,865 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 19:55:12,873 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 252 places, 293 transitions, 594 flow [2022-12-13 19:55:12,875 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 252 places, 293 transitions, 594 flow [2022-12-13 19:55:12,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 252 places, 293 transitions, 594 flow [2022-12-13 19:55:12,932 INFO L130 PetriNetUnfolder]: 72/450 cut-off events. [2022-12-13 19:55:12,933 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 19:55:12,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 456 conditions, 450 events. 72/450 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 2162 event pairs, 0 based on Foata normal form. 0/343 useless extension candidates. Maximal degree in co-relation 248. Up to 8 conditions per place. [2022-12-13 19:55:12,958 INFO L119 LiptonReduction]: Number of co-enabled transitions 27388 [2022-12-13 19:55:16,039 INFO L134 LiptonReduction]: Checked pairs total: 47888 [2022-12-13 19:55:16,039 INFO L136 LiptonReduction]: Total number of compositions: 248 [2022-12-13 19:55:16,052 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 19:55:16,057 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;@434e3756, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 19:55:16,057 INFO L358 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2022-12-13 19:55:16,059 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2022-12-13 19:55:16,060 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 19:55:16,060 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:55:16,061 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-12-13 19:55:16,061 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2022-12-13 19:55:16,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:55:16,066 INFO L85 PathProgramCache]: Analyzing trace with hash 36187, now seen corresponding path program 1 times [2022-12-13 19:55:16,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:55:16,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631259242] [2022-12-13 19:55:16,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:55:16,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:55:16,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:55:16,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:55:16,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:55:16,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631259242] [2022-12-13 19:55:16,295 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631259242] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:55:16,295 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:55:16,295 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 19:55:16,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307808464] [2022-12-13 19:55:16,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:55:16,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:55:16,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:55:16,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:55:16,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 19:55:16,344 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 249 out of 544 [2022-12-13 19:55:16,347 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 122 transitions, 252 flow. Second operand has 3 states, 3 states have (on average 249.66666666666666) internal successors, (749), 3 states have internal predecessors, (749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:55:16,348 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:55:16,348 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 249 of 544 [2022-12-13 19:55:16,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:55:16,677 INFO L130 PetriNetUnfolder]: 1129/2299 cut-off events. [2022-12-13 19:55:16,677 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 19:55:16,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4443 conditions, 2299 events. 1129/2299 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 14500 event pairs, 968 based on Foata normal form. 303/1846 useless extension candidates. Maximal degree in co-relation 4323. Up to 2136 conditions per place. [2022-12-13 19:55:16,685 INFO L137 encePairwiseOnDemand]: 507/544 looper letters, 75 selfloop transitions, 2 changer transitions 0/89 dead transitions. [2022-12-13 19:55:16,685 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 89 transitions, 340 flow [2022-12-13 19:55:16,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:55:16,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 19:55:16,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 860 transitions. [2022-12-13 19:55:16,698 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5269607843137255 [2022-12-13 19:55:16,699 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 860 transitions. [2022-12-13 19:55:16,699 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 860 transitions. [2022-12-13 19:55:16,702 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:55:16,705 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 860 transitions. [2022-12-13 19:55:16,711 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 286.6666666666667) internal successors, (860), 3 states have internal predecessors, (860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:55:16,717 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 544.0) internal successors, (2176), 4 states have internal predecessors, (2176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:55:16,718 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 544.0) internal successors, (2176), 4 states have internal predecessors, (2176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:55:16,719 INFO L175 Difference]: Start difference. First operand has 87 places, 122 transitions, 252 flow. Second operand 3 states and 860 transitions. [2022-12-13 19:55:16,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 89 transitions, 340 flow [2022-12-13 19:55:16,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 89 transitions, 340 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 19:55:16,724 INFO L231 Difference]: Finished difference. Result has 88 places, 89 transitions, 198 flow [2022-12-13 19:55:16,725 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=544, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=198, PETRI_PLACES=88, PETRI_TRANSITIONS=89} [2022-12-13 19:55:16,728 INFO L288 CegarLoopForPetriNet]: 87 programPoint places, 1 predicate places. [2022-12-13 19:55:16,728 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 89 transitions, 198 flow [2022-12-13 19:55:16,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 249.66666666666666) internal successors, (749), 3 states have internal predecessors, (749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:55:16,728 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:55:16,728 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 19:55:16,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 19:55:16,729 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2022-12-13 19:55:16,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:55:16,729 INFO L85 PathProgramCache]: Analyzing trace with hash 1124504, now seen corresponding path program 1 times [2022-12-13 19:55:16,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:55:16,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040875985] [2022-12-13 19:55:16,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:55:16,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:55:16,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:55:16,774 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:55:16,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:55:16,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040875985] [2022-12-13 19:55:16,775 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040875985] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:55:16,775 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:55:16,775 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 19:55:16,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952106236] [2022-12-13 19:55:16,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:55:16,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:55:16,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:55:16,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:55:16,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 19:55:16,788 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 249 out of 544 [2022-12-13 19:55:16,789 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 89 transitions, 198 flow. Second operand has 3 states, 3 states have (on average 250.0) internal successors, (750), 3 states have internal predecessors, (750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:55:16,789 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:55:16,790 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 249 of 544 [2022-12-13 19:55:16,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:55:17,048 INFO L130 PetriNetUnfolder]: 1129/2298 cut-off events. [2022-12-13 19:55:17,048 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 19:55:17,050 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4448 conditions, 2298 events. 1129/2298 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 14482 event pairs, 968 based on Foata normal form. 0/1543 useless extension candidates. Maximal degree in co-relation 4436. Up to 2135 conditions per place. [2022-12-13 19:55:17,056 INFO L137 encePairwiseOnDemand]: 542/544 looper letters, 75 selfloop transitions, 1 changer transitions 0/88 dead transitions. [2022-12-13 19:55:17,056 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 88 transitions, 346 flow [2022-12-13 19:55:17,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:55:17,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 19:55:17,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 823 transitions. [2022-12-13 19:55:17,058 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5042892156862745 [2022-12-13 19:55:17,058 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 823 transitions. [2022-12-13 19:55:17,058 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 823 transitions. [2022-12-13 19:55:17,058 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:55:17,058 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 823 transitions. [2022-12-13 19:55:17,059 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 274.3333333333333) internal successors, (823), 3 states have internal predecessors, (823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:55:17,061 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 544.0) internal successors, (2176), 4 states have internal predecessors, (2176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:55:17,062 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 544.0) internal successors, (2176), 4 states have internal predecessors, (2176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:55:17,062 INFO L175 Difference]: Start difference. First operand has 88 places, 89 transitions, 198 flow. Second operand 3 states and 823 transitions. [2022-12-13 19:55:17,062 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 88 transitions, 346 flow [2022-12-13 19:55:17,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 88 transitions, 342 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-12-13 19:55:17,064 INFO L231 Difference]: Finished difference. Result has 88 places, 88 transitions, 192 flow [2022-12-13 19:55:17,064 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=544, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=192, PETRI_PLACES=88, PETRI_TRANSITIONS=88} [2022-12-13 19:55:17,065 INFO L288 CegarLoopForPetriNet]: 87 programPoint places, 1 predicate places. [2022-12-13 19:55:17,065 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 88 transitions, 192 flow [2022-12-13 19:55:17,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 250.0) internal successors, (750), 3 states have internal predecessors, (750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:55:17,065 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:55:17,065 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-13 19:55:17,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 19:55:17,066 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2022-12-13 19:55:17,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:55:17,066 INFO L85 PathProgramCache]: Analyzing trace with hash -857764150, now seen corresponding path program 1 times [2022-12-13 19:55:17,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:55:17,066 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075180413] [2022-12-13 19:55:17,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:55:17,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:55:17,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:55:17,114 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:55:17,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:55:17,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075180413] [2022-12-13 19:55:17,115 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075180413] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:55:17,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [419572771] [2022-12-13 19:55:17,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:55:17,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:55:17,115 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76dcb35c-fd1f-4c82-9d0e-c3c9238dcceb/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:55:17,116 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76dcb35c-fd1f-4c82-9d0e-c3c9238dcceb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:55:17,117 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76dcb35c-fd1f-4c82-9d0e-c3c9238dcceb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 19:55:17,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:55:17,173 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 19:55:17,176 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:55:17,202 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:55:17,202 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:55:17,215 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:55:17,215 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [419572771] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 19:55:17,215 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 19:55:17,215 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-12-13 19:55:17,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975766033] [2022-12-13 19:55:17,216 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 19:55:17,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 19:55:17,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:55:17,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 19:55:17,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-12-13 19:55:17,236 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 248 out of 544 [2022-12-13 19:55:17,238 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 88 transitions, 192 flow. Second operand has 7 states, 7 states have (on average 249.57142857142858) internal successors, (1747), 7 states have internal predecessors, (1747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:55:17,238 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:55:17,238 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 248 of 544 [2022-12-13 19:55:17,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:55:17,566 INFO L130 PetriNetUnfolder]: 1129/2301 cut-off events. [2022-12-13 19:55:17,566 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 19:55:17,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4456 conditions, 2301 events. 1129/2301 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 14520 event pairs, 968 based on Foata normal form. 0/1546 useless extension candidates. Maximal degree in co-relation 4447. Up to 2135 conditions per place. [2022-12-13 19:55:17,574 INFO L137 encePairwiseOnDemand]: 541/544 looper letters, 74 selfloop transitions, 5 changer transitions 0/91 dead transitions. [2022-12-13 19:55:17,574 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 91 transitions, 362 flow [2022-12-13 19:55:17,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 19:55:17,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 19:55:17,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1570 transitions. [2022-12-13 19:55:17,581 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4810049019607843 [2022-12-13 19:55:17,581 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1570 transitions. [2022-12-13 19:55:17,581 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1570 transitions. [2022-12-13 19:55:17,582 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:55:17,582 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1570 transitions. [2022-12-13 19:55:17,586 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 261.6666666666667) internal successors, (1570), 6 states have internal predecessors, (1570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:55:17,591 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 544.0) internal successors, (3808), 7 states have internal predecessors, (3808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:55:17,593 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 544.0) internal successors, (3808), 7 states have internal predecessors, (3808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:55:17,593 INFO L175 Difference]: Start difference. First operand has 88 places, 88 transitions, 192 flow. Second operand 6 states and 1570 transitions. [2022-12-13 19:55:17,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 91 transitions, 362 flow [2022-12-13 19:55:17,594 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 91 transitions, 361 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 19:55:17,596 INFO L231 Difference]: Finished difference. Result has 95 places, 91 transitions, 227 flow [2022-12-13 19:55:17,596 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=544, PETRI_DIFFERENCE_MINUEND_FLOW=191, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=227, PETRI_PLACES=95, PETRI_TRANSITIONS=91} [2022-12-13 19:55:17,597 INFO L288 CegarLoopForPetriNet]: 87 programPoint places, 8 predicate places. [2022-12-13 19:55:17,597 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 91 transitions, 227 flow [2022-12-13 19:55:17,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 249.57142857142858) internal successors, (1747), 7 states have internal predecessors, (1747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:55:17,598 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:55:17,598 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1] [2022-12-13 19:55:17,604 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76dcb35c-fd1f-4c82-9d0e-c3c9238dcceb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 19:55:17,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76dcb35c-fd1f-4c82-9d0e-c3c9238dcceb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:55:17,799 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2022-12-13 19:55:17,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:55:17,799 INFO L85 PathProgramCache]: Analyzing trace with hash -159211545, now seen corresponding path program 2 times [2022-12-13 19:55:17,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:55:17,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144623670] [2022-12-13 19:55:17,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:55:17,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:55:17,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:55:17,871 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-13 19:55:17,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:55:17,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144623670] [2022-12-13 19:55:17,872 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2144623670] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:55:17,872 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:55:17,872 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 19:55:17,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562613491] [2022-12-13 19:55:17,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:55:17,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:55:17,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:55:17,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:55:17,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 19:55:17,881 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 249 out of 544 [2022-12-13 19:55:17,882 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 91 transitions, 227 flow. Second operand has 3 states, 3 states have (on average 251.0) internal successors, (753), 3 states have internal predecessors, (753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:55:17,883 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:55:17,883 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 249 of 544 [2022-12-13 19:55:17,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:55:18,140 INFO L130 PetriNetUnfolder]: 1038/2200 cut-off events. [2022-12-13 19:55:18,140 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-13 19:55:18,142 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4243 conditions, 2200 events. 1038/2200 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 14948 event pairs, 0 based on Foata normal form. 0/1533 useless extension candidates. Maximal degree in co-relation 4230. Up to 1965 conditions per place. [2022-12-13 19:55:18,148 INFO L137 encePairwiseOnDemand]: 539/544 looper letters, 99 selfloop transitions, 2 changer transitions 0/113 dead transitions. [2022-12-13 19:55:18,148 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 113 transitions, 473 flow [2022-12-13 19:55:18,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:55:18,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 19:55:18,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 847 transitions. [2022-12-13 19:55:18,149 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5189950980392157 [2022-12-13 19:55:18,149 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 847 transitions. [2022-12-13 19:55:18,150 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 847 transitions. [2022-12-13 19:55:18,150 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:55:18,150 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 847 transitions. [2022-12-13 19:55:18,151 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 282.3333333333333) internal successors, (847), 3 states have internal predecessors, (847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:55:18,153 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 544.0) internal successors, (2176), 4 states have internal predecessors, (2176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:55:18,154 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 544.0) internal successors, (2176), 4 states have internal predecessors, (2176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:55:18,154 INFO L175 Difference]: Start difference. First operand has 95 places, 91 transitions, 227 flow. Second operand 3 states and 847 transitions. [2022-12-13 19:55:18,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 113 transitions, 473 flow [2022-12-13 19:55:18,155 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 113 transitions, 459 flow, removed 6 selfloop flow, removed 1 redundant places. [2022-12-13 19:55:18,157 INFO L231 Difference]: Finished difference. Result has 95 places, 89 transitions, 217 flow [2022-12-13 19:55:18,157 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=544, PETRI_DIFFERENCE_MINUEND_FLOW=209, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=217, PETRI_PLACES=95, PETRI_TRANSITIONS=89} [2022-12-13 19:55:18,157 INFO L288 CegarLoopForPetriNet]: 87 programPoint places, 8 predicate places. [2022-12-13 19:55:18,157 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 89 transitions, 217 flow [2022-12-13 19:55:18,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 251.0) internal successors, (753), 3 states have internal predecessors, (753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:55:18,158 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:55:18,158 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1] [2022-12-13 19:55:18,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 19:55:18,158 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2022-12-13 19:55:18,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:55:18,159 INFO L85 PathProgramCache]: Analyzing trace with hash 1616578767, now seen corresponding path program 1 times [2022-12-13 19:55:18,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:55:18,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175605655] [2022-12-13 19:55:18,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:55:18,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:55:18,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:55:18,228 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 19:55:18,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:55:18,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175605655] [2022-12-13 19:55:18,228 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175605655] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:55:18,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1573534994] [2022-12-13 19:55:18,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:55:18,229 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:55:18,229 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76dcb35c-fd1f-4c82-9d0e-c3c9238dcceb/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:55:18,230 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76dcb35c-fd1f-4c82-9d0e-c3c9238dcceb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:55:18,231 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76dcb35c-fd1f-4c82-9d0e-c3c9238dcceb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 19:55:18,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:55:18,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 19:55:18,295 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:55:18,310 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 19:55:18,310 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:55:18,350 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 19:55:18,350 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1573534994] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 19:55:18,351 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 19:55:18,351 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2022-12-13 19:55:18,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234014842] [2022-12-13 19:55:18,351 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 19:55:18,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-13 19:55:18,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:55:18,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-13 19:55:18,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-12-13 19:55:18,381 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 248 out of 544 [2022-12-13 19:55:18,387 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 89 transitions, 217 flow. Second operand has 13 states, 13 states have (on average 249.30769230769232) internal successors, (3241), 13 states have internal predecessors, (3241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:55:18,387 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:55:18,387 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 248 of 544 [2022-12-13 19:55:18,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:55:18,644 INFO L130 PetriNetUnfolder]: 1076/2173 cut-off events. [2022-12-13 19:55:18,644 INFO L131 PetriNetUnfolder]: For 120/120 co-relation queries the response was YES. [2022-12-13 19:55:18,647 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4287 conditions, 2173 events. 1076/2173 cut-off events. For 120/120 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 13484 event pairs, 924 based on Foata normal form. 6/1525 useless extension candidates. Maximal degree in co-relation 4273. Up to 1996 conditions per place. [2022-12-13 19:55:18,652 INFO L137 encePairwiseOnDemand]: 541/544 looper letters, 72 selfloop transitions, 11 changer transitions 0/95 dead transitions. [2022-12-13 19:55:18,652 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 95 transitions, 419 flow [2022-12-13 19:55:18,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 19:55:18,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-12-13 19:55:18,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3065 transitions. [2022-12-13 19:55:18,664 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46951593137254904 [2022-12-13 19:55:18,664 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3065 transitions. [2022-12-13 19:55:18,664 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3065 transitions. [2022-12-13 19:55:18,667 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:55:18,667 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3065 transitions. [2022-12-13 19:55:18,678 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 255.41666666666666) internal successors, (3065), 12 states have internal predecessors, (3065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:55:18,691 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 544.0) internal successors, (7072), 13 states have internal predecessors, (7072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:55:18,694 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 544.0) internal successors, (7072), 13 states have internal predecessors, (7072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:55:18,694 INFO L175 Difference]: Start difference. First operand has 95 places, 89 transitions, 217 flow. Second operand 12 states and 3065 transitions. [2022-12-13 19:55:18,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 95 transitions, 419 flow [2022-12-13 19:55:18,697 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 95 transitions, 415 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 19:55:18,699 INFO L231 Difference]: Finished difference. Result has 110 places, 95 transitions, 297 flow [2022-12-13 19:55:18,699 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=544, PETRI_DIFFERENCE_MINUEND_FLOW=213, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=297, PETRI_PLACES=110, PETRI_TRANSITIONS=95} [2022-12-13 19:55:18,700 INFO L288 CegarLoopForPetriNet]: 87 programPoint places, 23 predicate places. [2022-12-13 19:55:18,700 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 95 transitions, 297 flow [2022-12-13 19:55:18,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 249.30769230769232) internal successors, (3241), 13 states have internal predecessors, (3241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:55:18,702 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:55:18,702 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1] [2022-12-13 19:55:18,707 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76dcb35c-fd1f-4c82-9d0e-c3c9238dcceb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 19:55:18,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76dcb35c-fd1f-4c82-9d0e-c3c9238dcceb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:55:18,903 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2022-12-13 19:55:18,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:55:18,903 INFO L85 PathProgramCache]: Analyzing trace with hash 641320431, now seen corresponding path program 2 times [2022-12-13 19:55:18,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:55:18,903 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600079377] [2022-12-13 19:55:18,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:55:18,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:55:18,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 19:55:18,941 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 19:55:18,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 19:55:18,986 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 19:55:18,986 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 19:55:18,987 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (28 of 29 remaining) [2022-12-13 19:55:18,989 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 29 remaining) [2022-12-13 19:55:18,989 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 29 remaining) [2022-12-13 19:55:18,989 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 29 remaining) [2022-12-13 19:55:18,990 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 29 remaining) [2022-12-13 19:55:18,990 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 29 remaining) [2022-12-13 19:55:18,990 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 29 remaining) [2022-12-13 19:55:18,990 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 29 remaining) [2022-12-13 19:55:18,990 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 29 remaining) [2022-12-13 19:55:18,990 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 29 remaining) [2022-12-13 19:55:18,990 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 29 remaining) [2022-12-13 19:55:18,991 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 29 remaining) [2022-12-13 19:55:18,991 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 29 remaining) [2022-12-13 19:55:18,991 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 29 remaining) [2022-12-13 19:55:18,991 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 29 remaining) [2022-12-13 19:55:18,991 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 29 remaining) [2022-12-13 19:55:18,991 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 29 remaining) [2022-12-13 19:55:18,991 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 29 remaining) [2022-12-13 19:55:18,992 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 29 remaining) [2022-12-13 19:55:18,992 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 29 remaining) [2022-12-13 19:55:18,992 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 29 remaining) [2022-12-13 19:55:18,992 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 29 remaining) [2022-12-13 19:55:18,992 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 29 remaining) [2022-12-13 19:55:18,992 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 29 remaining) [2022-12-13 19:55:18,992 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 29 remaining) [2022-12-13 19:55:18,993 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 29 remaining) [2022-12-13 19:55:18,993 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 29 remaining) [2022-12-13 19:55:18,993 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 29 remaining) [2022-12-13 19:55:18,993 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 29 remaining) [2022-12-13 19:55:18,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 19:55:18,994 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1] [2022-12-13 19:55:18,996 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-13 19:55:18,997 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-12-13 19:55:19,036 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-13 19:55:19,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 325 places, 380 transitions, 778 flow [2022-12-13 19:55:19,120 INFO L130 PetriNetUnfolder]: 118/731 cut-off events. [2022-12-13 19:55:19,120 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-12-13 19:55:19,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 745 conditions, 731 events. 118/731 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 3932 event pairs, 0 based on Foata normal form. 0/555 useless extension candidates. Maximal degree in co-relation 455. Up to 12 conditions per place. [2022-12-13 19:55:19,126 INFO L82 GeneralOperation]: Start removeDead. Operand has 325 places, 380 transitions, 778 flow [2022-12-13 19:55:19,132 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 325 places, 380 transitions, 778 flow [2022-12-13 19:55:19,132 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 19:55:19,132 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 325 places, 380 transitions, 778 flow [2022-12-13 19:55:19,132 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 325 places, 380 transitions, 778 flow [2022-12-13 19:55:19,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 325 places, 380 transitions, 778 flow [2022-12-13 19:55:19,223 INFO L130 PetriNetUnfolder]: 118/731 cut-off events. [2022-12-13 19:55:19,223 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-12-13 19:55:19,232 INFO L83 FinitePrefix]: Finished finitePrefix Result has 745 conditions, 731 events. 118/731 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 3932 event pairs, 0 based on Foata normal form. 0/555 useless extension candidates. Maximal degree in co-relation 455. Up to 12 conditions per place. [2022-12-13 19:55:19,263 INFO L119 LiptonReduction]: Number of co-enabled transitions 71340 [2022-12-13 19:55:22,245 INFO L134 LiptonReduction]: Checked pairs total: 123282 [2022-12-13 19:55:22,245 INFO L136 LiptonReduction]: Total number of compositions: 311 [2022-12-13 19:55:22,247 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 19:55:22,248 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;@434e3756, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 19:55:22,248 INFO L358 AbstractCegarLoop]: Starting to check reachability of 35 error locations. [2022-12-13 19:55:22,249 INFO L130 PetriNetUnfolder]: 1/3 cut-off events. [2022-12-13 19:55:22,249 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 19:55:22,250 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:55:22,250 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-12-13 19:55:22,250 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2022-12-13 19:55:22,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:55:22,250 INFO L85 PathProgramCache]: Analyzing trace with hash 60960, now seen corresponding path program 1 times [2022-12-13 19:55:22,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:55:22,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269526448] [2022-12-13 19:55:22,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:55:22,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:55:22,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:55:22,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:55:22,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:55:22,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269526448] [2022-12-13 19:55:22,270 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269526448] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:55:22,271 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:55:22,271 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 19:55:22,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026636335] [2022-12-13 19:55:22,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:55:22,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:55:22,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:55:22,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:55:22,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 19:55:22,280 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 318 out of 691 [2022-12-13 19:55:22,282 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 167 transitions, 352 flow. Second operand has 3 states, 3 states have (on average 318.6666666666667) internal successors, (956), 3 states have internal predecessors, (956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:55:22,282 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:55:22,282 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 318 of 691 [2022-12-13 19:55:22,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:55:27,202 INFO L130 PetriNetUnfolder]: 54078/83446 cut-off events. [2022-12-13 19:55:27,202 INFO L131 PetriNetUnfolder]: For 174/174 co-relation queries the response was YES. [2022-12-13 19:55:27,325 INFO L83 FinitePrefix]: Finished finitePrefix Result has 162286 conditions, 83446 events. 54078/83446 cut-off events. For 174/174 co-relation queries the response was YES. Maximal size of possible extension queue 2508. Compared 670172 event pairs, 48250 based on Foata normal form. 11626/67994 useless extension candidates. Maximal degree in co-relation 71124. Up to 78699 conditions per place. [2022-12-13 19:55:27,646 INFO L137 encePairwiseOnDemand]: 642/691 looper letters, 102 selfloop transitions, 2 changer transitions 0/122 dead transitions. [2022-12-13 19:55:27,646 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 122 transitions, 470 flow [2022-12-13 19:55:27,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:55:27,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 19:55:27,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1106 transitions. [2022-12-13 19:55:27,650 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5335262904003859 [2022-12-13 19:55:27,650 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1106 transitions. [2022-12-13 19:55:27,650 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1106 transitions. [2022-12-13 19:55:27,650 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:55:27,650 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1106 transitions. [2022-12-13 19:55:27,652 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 368.6666666666667) internal successors, (1106), 3 states have internal predecessors, (1106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:55:27,655 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 691.0) internal successors, (2764), 4 states have internal predecessors, (2764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:55:27,656 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 691.0) internal successors, (2764), 4 states have internal predecessors, (2764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:55:27,656 INFO L175 Difference]: Start difference. First operand has 118 places, 167 transitions, 352 flow. Second operand 3 states and 1106 transitions. [2022-12-13 19:55:27,656 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 122 transitions, 470 flow [2022-12-13 19:55:27,657 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 122 transitions, 470 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 19:55:27,659 INFO L231 Difference]: Finished difference. Result has 119 places, 122 transitions, 274 flow [2022-12-13 19:55:27,659 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=691, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=274, PETRI_PLACES=119, PETRI_TRANSITIONS=122} [2022-12-13 19:55:27,659 INFO L288 CegarLoopForPetriNet]: 118 programPoint places, 1 predicate places. [2022-12-13 19:55:27,660 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 122 transitions, 274 flow [2022-12-13 19:55:27,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 318.6666666666667) internal successors, (956), 3 states have internal predecessors, (956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:55:27,660 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:55:27,660 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 19:55:27,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 19:55:27,660 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2022-12-13 19:55:27,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:55:27,661 INFO L85 PathProgramCache]: Analyzing trace with hash 1893122, now seen corresponding path program 1 times [2022-12-13 19:55:27,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:55:27,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238937792] [2022-12-13 19:55:27,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:55:27,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:55:27,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:55:27,688 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:55:27,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:55:27,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238937792] [2022-12-13 19:55:27,688 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1238937792] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:55:27,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [89834768] [2022-12-13 19:55:27,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:55:27,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:55:27,689 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76dcb35c-fd1f-4c82-9d0e-c3c9238dcceb/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:55:27,689 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76dcb35c-fd1f-4c82-9d0e-c3c9238dcceb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:55:27,690 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76dcb35c-fd1f-4c82-9d0e-c3c9238dcceb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 19:55:27,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:55:27,742 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 19:55:27,742 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:55:27,748 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:55:27,748 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 19:55:27,748 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [89834768] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:55:27,748 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 19:55:27,748 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2022-12-13 19:55:27,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535757463] [2022-12-13 19:55:27,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:55:27,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 19:55:27,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:55:27,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 19:55:27,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 19:55:27,759 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 318 out of 691 [2022-12-13 19:55:27,761 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 122 transitions, 274 flow. Second operand has 4 states, 4 states have (on average 318.75) internal successors, (1275), 4 states have internal predecessors, (1275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:55:27,761 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:55:27,761 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 318 of 691 [2022-12-13 19:55:27,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:55:32,292 INFO L130 PetriNetUnfolder]: 54078/83445 cut-off events. [2022-12-13 19:55:32,292 INFO L131 PetriNetUnfolder]: For 174/174 co-relation queries the response was YES. [2022-12-13 19:55:32,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 162291 conditions, 83445 events. 54078/83445 cut-off events. For 174/174 co-relation queries the response was YES. Maximal size of possible extension queue 2508. Compared 670075 event pairs, 48250 based on Foata normal form. 0/56368 useless extension candidates. Maximal degree in co-relation 162278. Up to 78697 conditions per place. [2022-12-13 19:55:32,663 INFO L137 encePairwiseOnDemand]: 688/691 looper letters, 101 selfloop transitions, 2 changer transitions 0/121 dead transitions. [2022-12-13 19:55:32,664 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 121 transitions, 476 flow [2022-12-13 19:55:32,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 19:55:32,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 19:55:32,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1376 transitions. [2022-12-13 19:55:32,667 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49782923299565845 [2022-12-13 19:55:32,667 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1376 transitions. [2022-12-13 19:55:32,668 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1376 transitions. [2022-12-13 19:55:32,668 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:55:32,668 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1376 transitions. [2022-12-13 19:55:32,671 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 344.0) internal successors, (1376), 4 states have internal predecessors, (1376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:55:32,674 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 691.0) internal successors, (3455), 5 states have internal predecessors, (3455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:55:32,675 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 691.0) internal successors, (3455), 5 states have internal predecessors, (3455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:55:32,675 INFO L175 Difference]: Start difference. First operand has 119 places, 122 transitions, 274 flow. Second operand 4 states and 1376 transitions. [2022-12-13 19:55:32,675 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 121 transitions, 476 flow [2022-12-13 19:55:32,676 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 121 transitions, 472 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-12-13 19:55:32,677 INFO L231 Difference]: Finished difference. Result has 120 places, 121 transitions, 270 flow [2022-12-13 19:55:32,677 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=691, PETRI_DIFFERENCE_MINUEND_FLOW=266, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=270, PETRI_PLACES=120, PETRI_TRANSITIONS=121} [2022-12-13 19:55:32,678 INFO L288 CegarLoopForPetriNet]: 118 programPoint places, 2 predicate places. [2022-12-13 19:55:32,678 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 121 transitions, 270 flow [2022-12-13 19:55:32,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 318.75) internal successors, (1275), 4 states have internal predecessors, (1275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:55:32,678 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:55:32,678 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:55:32,682 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76dcb35c-fd1f-4c82-9d0e-c3c9238dcceb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 19:55:32,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76dcb35c-fd1f-4c82-9d0e-c3c9238dcceb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-12-13 19:55:32,880 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2022-12-13 19:55:32,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:55:32,881 INFO L85 PathProgramCache]: Analyzing trace with hash 354983572, now seen corresponding path program 1 times [2022-12-13 19:55:32,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:55:32,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158839238] [2022-12-13 19:55:32,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:55:32,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:55:32,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:55:32,940 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:55:32,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:55:32,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158839238] [2022-12-13 19:55:32,940 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158839238] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:55:32,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1269795697] [2022-12-13 19:55:32,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:55:32,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:55:32,941 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76dcb35c-fd1f-4c82-9d0e-c3c9238dcceb/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:55:32,942 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76dcb35c-fd1f-4c82-9d0e-c3c9238dcceb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:55:32,943 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76dcb35c-fd1f-4c82-9d0e-c3c9238dcceb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 19:55:33,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:55:33,003 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 19:55:33,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:55:33,011 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:55:33,011 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:55:33,023 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:55:33,023 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1269795697] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 19:55:33,023 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 19:55:33,023 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-12-13 19:55:33,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297042086] [2022-12-13 19:55:33,024 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 19:55:33,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 19:55:33,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:55:33,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 19:55:33,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-12-13 19:55:33,042 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 317 out of 691 [2022-12-13 19:55:33,046 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 121 transitions, 270 flow. Second operand has 7 states, 7 states have (on average 318.57142857142856) internal successors, (2230), 7 states have internal predecessors, (2230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:55:33,046 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:55:33,046 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 317 of 691 [2022-12-13 19:55:33,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:55:38,737 INFO L130 PetriNetUnfolder]: 54078/83448 cut-off events. [2022-12-13 19:55:38,737 INFO L131 PetriNetUnfolder]: For 174/174 co-relation queries the response was YES. [2022-12-13 19:55:38,856 INFO L83 FinitePrefix]: Finished finitePrefix Result has 162300 conditions, 83448 events. 54078/83448 cut-off events. For 174/174 co-relation queries the response was YES. Maximal size of possible extension queue 2508. Compared 670197 event pairs, 48250 based on Foata normal form. 0/56371 useless extension candidates. Maximal degree in co-relation 162287. Up to 78698 conditions per place. [2022-12-13 19:55:39,117 INFO L137 encePairwiseOnDemand]: 688/691 looper letters, 101 selfloop transitions, 5 changer transitions 0/124 dead transitions. [2022-12-13 19:55:39,118 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 124 transitions, 494 flow [2022-12-13 19:55:39,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 19:55:39,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 19:55:39,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2011 transitions. [2022-12-13 19:55:39,123 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.485045827303425 [2022-12-13 19:55:39,123 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2011 transitions. [2022-12-13 19:55:39,123 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2011 transitions. [2022-12-13 19:55:39,124 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:55:39,124 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2011 transitions. [2022-12-13 19:55:39,128 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 335.1666666666667) internal successors, (2011), 6 states have internal predecessors, (2011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:55:39,133 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 691.0) internal successors, (4837), 7 states have internal predecessors, (4837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:55:39,134 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 691.0) internal successors, (4837), 7 states have internal predecessors, (4837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:55:39,134 INFO L175 Difference]: Start difference. First operand has 120 places, 121 transitions, 270 flow. Second operand 6 states and 2011 transitions. [2022-12-13 19:55:39,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 124 transitions, 494 flow [2022-12-13 19:55:39,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 124 transitions, 491 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 19:55:39,136 INFO L231 Difference]: Finished difference. Result has 126 places, 124 transitions, 303 flow [2022-12-13 19:55:39,137 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=691, PETRI_DIFFERENCE_MINUEND_FLOW=267, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=303, PETRI_PLACES=126, PETRI_TRANSITIONS=124} [2022-12-13 19:55:39,137 INFO L288 CegarLoopForPetriNet]: 118 programPoint places, 8 predicate places. [2022-12-13 19:55:39,137 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 124 transitions, 303 flow [2022-12-13 19:55:39,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 318.57142857142856) internal successors, (2230), 7 states have internal predecessors, (2230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:55:39,138 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:55:39,138 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1] [2022-12-13 19:55:39,144 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76dcb35c-fd1f-4c82-9d0e-c3c9238dcceb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-12-13 19:55:39,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76dcb35c-fd1f-4c82-9d0e-c3c9238dcceb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:55:39,340 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2022-12-13 19:55:39,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:55:39,342 INFO L85 PathProgramCache]: Analyzing trace with hash 1085592370, now seen corresponding path program 2 times [2022-12-13 19:55:39,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:55:39,343 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538373703] [2022-12-13 19:55:39,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:55:39,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:55:39,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:55:39,409 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-13 19:55:39,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:55:39,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538373703] [2022-12-13 19:55:39,410 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538373703] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:55:39,410 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:55:39,410 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 19:55:39,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892478137] [2022-12-13 19:55:39,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:55:39,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:55:39,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:55:39,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:55:39,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 19:55:39,419 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 318 out of 691 [2022-12-13 19:55:39,421 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 124 transitions, 303 flow. Second operand has 3 states, 3 states have (on average 320.0) internal successors, (960), 3 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:55:39,421 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:55:39,421 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 318 of 691 [2022-12-13 19:55:39,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:55:44,028 INFO L130 PetriNetUnfolder]: 53164/81898 cut-off events. [2022-12-13 19:55:44,029 INFO L131 PetriNetUnfolder]: For 115/115 co-relation queries the response was YES. [2022-12-13 19:55:44,195 INFO L83 FinitePrefix]: Finished finitePrefix Result has 159525 conditions, 81898 events. 53164/81898 cut-off events. For 115/115 co-relation queries the response was YES. Maximal size of possible extension queue 2496. Compared 659022 event pairs, 23364 based on Foata normal form. 0/55011 useless extension candidates. Maximal degree in co-relation 159508. Up to 77402 conditions per place. [2022-12-13 19:55:44,396 INFO L137 encePairwiseOnDemand]: 686/691 looper letters, 130 selfloop transitions, 2 changer transitions 0/150 dead transitions. [2022-12-13 19:55:44,396 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 150 transitions, 619 flow [2022-12-13 19:55:44,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:55:44,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 19:55:44,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1085 transitions. [2022-12-13 19:55:44,399 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5233960443801254 [2022-12-13 19:55:44,399 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1085 transitions. [2022-12-13 19:55:44,399 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1085 transitions. [2022-12-13 19:55:44,399 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:55:44,400 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1085 transitions. [2022-12-13 19:55:44,401 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 361.6666666666667) internal successors, (1085), 3 states have internal predecessors, (1085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:55:44,404 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 691.0) internal successors, (2764), 4 states have internal predecessors, (2764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:55:44,404 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 691.0) internal successors, (2764), 4 states have internal predecessors, (2764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:55:44,404 INFO L175 Difference]: Start difference. First operand has 126 places, 124 transitions, 303 flow. Second operand 3 states and 1085 transitions. [2022-12-13 19:55:44,404 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 150 transitions, 619 flow [2022-12-13 19:55:44,405 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 150 transitions, 605 flow, removed 6 selfloop flow, removed 1 redundant places. [2022-12-13 19:55:44,407 INFO L231 Difference]: Finished difference. Result has 128 places, 125 transitions, 305 flow [2022-12-13 19:55:44,407 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=691, PETRI_DIFFERENCE_MINUEND_FLOW=289, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=305, PETRI_PLACES=128, PETRI_TRANSITIONS=125} [2022-12-13 19:55:44,407 INFO L288 CegarLoopForPetriNet]: 118 programPoint places, 10 predicate places. [2022-12-13 19:55:44,407 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 125 transitions, 305 flow [2022-12-13 19:55:44,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 320.0) internal successors, (960), 3 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:55:44,408 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:55:44,408 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:55:44,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 19:55:44,408 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2022-12-13 19:55:44,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:55:44,408 INFO L85 PathProgramCache]: Analyzing trace with hash -2014264268, now seen corresponding path program 1 times [2022-12-13 19:55:44,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:55:44,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128005357] [2022-12-13 19:55:44,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:55:44,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:55:44,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:55:44,462 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:55:44,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:55:44,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128005357] [2022-12-13 19:55:44,462 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128005357] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:55:44,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [516573104] [2022-12-13 19:55:44,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:55:44,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:55:44,463 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76dcb35c-fd1f-4c82-9d0e-c3c9238dcceb/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:55:44,463 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76dcb35c-fd1f-4c82-9d0e-c3c9238dcceb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:55:44,464 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76dcb35c-fd1f-4c82-9d0e-c3c9238dcceb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 19:55:44,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:55:44,534 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 19:55:44,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:55:44,546 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:55:44,546 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:55:44,576 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:55:44,576 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [516573104] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 19:55:44,577 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 19:55:44,577 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2022-12-13 19:55:44,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905393791] [2022-12-13 19:55:44,577 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 19:55:44,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-13 19:55:44,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:55:44,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-13 19:55:44,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-12-13 19:55:44,602 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 317 out of 691 [2022-12-13 19:55:44,606 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 125 transitions, 305 flow. Second operand has 13 states, 13 states have (on average 318.61538461538464) internal successors, (4142), 13 states have internal predecessors, (4142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:55:44,606 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:55:44,606 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 317 of 691 [2022-12-13 19:55:44,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:55:49,761 INFO L130 PetriNetUnfolder]: 54244/83398 cut-off events. [2022-12-13 19:55:49,761 INFO L131 PetriNetUnfolder]: For 1364/1364 co-relation queries the response was YES. [2022-12-13 19:55:49,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 164329 conditions, 83398 events. 54244/83398 cut-off events. For 1364/1364 co-relation queries the response was YES. Maximal size of possible extension queue 2541. Compared 664345 event pairs, 48204 based on Foata normal form. 6/56894 useless extension candidates. Maximal degree in co-relation 164311. Up to 78469 conditions per place. [2022-12-13 19:55:50,217 INFO L137 encePairwiseOnDemand]: 688/691 looper letters, 102 selfloop transitions, 11 changer transitions 0/131 dead transitions. [2022-12-13 19:55:50,217 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 131 transitions, 567 flow [2022-12-13 19:55:50,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 19:55:50,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-12-13 19:55:50,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3922 transitions. [2022-12-13 19:55:50,234 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4729860106126387 [2022-12-13 19:55:50,234 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3922 transitions. [2022-12-13 19:55:50,234 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3922 transitions. [2022-12-13 19:55:50,238 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:55:50,238 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3922 transitions. [2022-12-13 19:55:50,247 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 326.8333333333333) internal successors, (3922), 12 states have internal predecessors, (3922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:55:50,260 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 691.0) internal successors, (8983), 13 states have internal predecessors, (8983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:55:50,262 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 691.0) internal successors, (8983), 13 states have internal predecessors, (8983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:55:50,262 INFO L175 Difference]: Start difference. First operand has 128 places, 125 transitions, 305 flow. Second operand 12 states and 3922 transitions. [2022-12-13 19:55:50,262 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 131 transitions, 567 flow [2022-12-13 19:55:50,266 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 131 transitions, 565 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 19:55:50,268 INFO L231 Difference]: Finished difference. Result has 144 places, 131 transitions, 387 flow [2022-12-13 19:55:50,269 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=691, PETRI_DIFFERENCE_MINUEND_FLOW=303, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=387, PETRI_PLACES=144, PETRI_TRANSITIONS=131} [2022-12-13 19:55:50,269 INFO L288 CegarLoopForPetriNet]: 118 programPoint places, 26 predicate places. [2022-12-13 19:55:50,269 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 131 transitions, 387 flow [2022-12-13 19:55:50,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 318.61538461538464) internal successors, (4142), 13 states have internal predecessors, (4142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:55:50,270 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:55:50,270 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 2, 2, 1, 1, 1, 1, 1, 1] [2022-12-13 19:55:50,274 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76dcb35c-fd1f-4c82-9d0e-c3c9238dcceb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-13 19:55:50,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76dcb35c-fd1f-4c82-9d0e-c3c9238dcceb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-12-13 19:55:50,471 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2022-12-13 19:55:50,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:55:50,472 INFO L85 PathProgramCache]: Analyzing trace with hash -808502609, now seen corresponding path program 1 times [2022-12-13 19:55:50,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:55:50,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131538668] [2022-12-13 19:55:50,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:55:50,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:55:50,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:55:50,532 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-12-13 19:55:50,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:55:50,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131538668] [2022-12-13 19:55:50,532 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131538668] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:55:50,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [786129416] [2022-12-13 19:55:50,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:55:50,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:55:50,533 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76dcb35c-fd1f-4c82-9d0e-c3c9238dcceb/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:55:50,534 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76dcb35c-fd1f-4c82-9d0e-c3c9238dcceb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:55:50,534 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76dcb35c-fd1f-4c82-9d0e-c3c9238dcceb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 19:55:50,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:55:50,604 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 19:55:50,604 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:55:50,615 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-12-13 19:55:50,616 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 19:55:50,616 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [786129416] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:55:50,616 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 19:55:50,616 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2022-12-13 19:55:50,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379877276] [2022-12-13 19:55:50,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:55:50,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 19:55:50,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:55:50,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 19:55:50,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 19:55:50,626 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 318 out of 691 [2022-12-13 19:55:50,627 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 131 transitions, 387 flow. Second operand has 4 states, 4 states have (on average 320.25) internal successors, (1281), 4 states have internal predecessors, (1281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:55:50,627 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:55:50,627 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 318 of 691 [2022-12-13 19:55:50,627 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:55:55,907 INFO L130 PetriNetUnfolder]: 52036/80176 cut-off events. [2022-12-13 19:55:55,907 INFO L131 PetriNetUnfolder]: For 1256/1256 co-relation queries the response was YES. [2022-12-13 19:55:56,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 157895 conditions, 80176 events. 52036/80176 cut-off events. For 1256/1256 co-relation queries the response was YES. Maximal size of possible extension queue 2471. Compared 641863 event pairs, 22836 based on Foata normal form. 0/54792 useless extension candidates. Maximal degree in co-relation 157869. Up to 75739 conditions per place. [2022-12-13 19:55:56,440 INFO L137 encePairwiseOnDemand]: 688/691 looper letters, 135 selfloop transitions, 2 changer transitions 0/155 dead transitions. [2022-12-13 19:55:56,440 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 155 transitions, 707 flow [2022-12-13 19:55:56,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 19:55:56,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 19:55:56,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1400 transitions. [2022-12-13 19:55:56,443 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5065123010130246 [2022-12-13 19:55:56,443 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1400 transitions. [2022-12-13 19:55:56,443 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1400 transitions. [2022-12-13 19:55:56,444 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:55:56,444 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1400 transitions. [2022-12-13 19:55:56,446 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 350.0) internal successors, (1400), 4 states have internal predecessors, (1400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:55:56,448 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 691.0) internal successors, (3455), 5 states have internal predecessors, (3455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:55:56,448 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 691.0) internal successors, (3455), 5 states have internal predecessors, (3455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:55:56,448 INFO L175 Difference]: Start difference. First operand has 144 places, 131 transitions, 387 flow. Second operand 4 states and 1400 transitions. [2022-12-13 19:55:56,448 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 155 transitions, 707 flow [2022-12-13 19:55:56,450 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 155 transitions, 659 flow, removed 19 selfloop flow, removed 5 redundant places. [2022-12-13 19:55:56,452 INFO L231 Difference]: Finished difference. Result has 141 places, 130 transitions, 339 flow [2022-12-13 19:55:56,452 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=691, PETRI_DIFFERENCE_MINUEND_FLOW=335, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=339, PETRI_PLACES=141, PETRI_TRANSITIONS=130} [2022-12-13 19:55:56,452 INFO L288 CegarLoopForPetriNet]: 118 programPoint places, 23 predicate places. [2022-12-13 19:55:56,453 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 130 transitions, 339 flow [2022-12-13 19:55:56,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 320.25) internal successors, (1281), 4 states have internal predecessors, (1281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:55:56,453 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:55:56,453 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:55:56,457 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76dcb35c-fd1f-4c82-9d0e-c3c9238dcceb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-12-13 19:55:56,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76dcb35c-fd1f-4c82-9d0e-c3c9238dcceb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:55:56,654 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2022-12-13 19:55:56,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:55:56,656 INFO L85 PathProgramCache]: Analyzing trace with hash -419608330, now seen corresponding path program 1 times [2022-12-13 19:55:56,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:55:56,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000560713] [2022-12-13 19:55:56,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:55:56,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:55:56,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:55:57,141 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-12-13 19:55:57,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:55:57,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000560713] [2022-12-13 19:55:57,142 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000560713] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:55:57,142 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:55:57,142 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 19:55:57,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227219006] [2022-12-13 19:55:57,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:55:57,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 19:55:57,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:55:57,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 19:55:57,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-13 19:55:57,399 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 305 out of 691 [2022-12-13 19:55:57,400 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 130 transitions, 339 flow. Second operand has 6 states, 6 states have (on average 306.6666666666667) internal successors, (1840), 6 states have internal predecessors, (1840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:55:57,400 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:55:57,400 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 305 of 691 [2022-12-13 19:55:57,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:56:06,773 INFO L130 PetriNetUnfolder]: 94590/146200 cut-off events. [2022-12-13 19:56:06,773 INFO L131 PetriNetUnfolder]: For 2909/2909 co-relation queries the response was YES. [2022-12-13 19:56:07,325 INFO L83 FinitePrefix]: Finished finitePrefix Result has 289279 conditions, 146200 events. 94590/146200 cut-off events. For 2909/2909 co-relation queries the response was YES. Maximal size of possible extension queue 4106. Compared 1256689 event pairs, 18061 based on Foata normal form. 0/100829 useless extension candidates. Maximal degree in co-relation 289255. Up to 80024 conditions per place. [2022-12-13 19:56:07,835 INFO L137 encePairwiseOnDemand]: 673/691 looper letters, 363 selfloop transitions, 30 changer transitions 0/411 dead transitions. [2022-12-13 19:56:07,835 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 411 transitions, 1750 flow [2022-12-13 19:56:07,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 19:56:07,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 19:56:07,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2524 transitions. [2022-12-13 19:56:07,839 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5218110399007649 [2022-12-13 19:56:07,839 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2524 transitions. [2022-12-13 19:56:07,839 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2524 transitions. [2022-12-13 19:56:07,840 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:56:07,840 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2524 transitions. [2022-12-13 19:56:07,843 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 360.57142857142856) internal successors, (2524), 7 states have internal predecessors, (2524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:56:07,847 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 691.0) internal successors, (5528), 8 states have internal predecessors, (5528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:56:07,847 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 691.0) internal successors, (5528), 8 states have internal predecessors, (5528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:56:07,847 INFO L175 Difference]: Start difference. First operand has 141 places, 130 transitions, 339 flow. Second operand 7 states and 2524 transitions. [2022-12-13 19:56:07,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 411 transitions, 1750 flow [2022-12-13 19:56:07,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 411 transitions, 1744 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 19:56:07,857 INFO L231 Difference]: Finished difference. Result has 150 places, 159 transitions, 544 flow [2022-12-13 19:56:07,857 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=691, PETRI_DIFFERENCE_MINUEND_FLOW=336, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=544, PETRI_PLACES=150, PETRI_TRANSITIONS=159} [2022-12-13 19:56:07,857 INFO L288 CegarLoopForPetriNet]: 118 programPoint places, 32 predicate places. [2022-12-13 19:56:07,857 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 159 transitions, 544 flow [2022-12-13 19:56:07,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 306.6666666666667) internal successors, (1840), 6 states have internal predecessors, (1840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:56:07,858 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:56:07,858 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 2, 2, 1, 1, 1, 1, 1, 1] [2022-12-13 19:56:07,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-13 19:56:07,858 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2022-12-13 19:56:07,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:56:07,858 INFO L85 PathProgramCache]: Analyzing trace with hash -808502528, now seen corresponding path program 1 times [2022-12-13 19:56:07,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:56:07,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557226763] [2022-12-13 19:56:07,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:56:07,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:56:07,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:07,893 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2022-12-13 19:56:07,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:56:07,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557226763] [2022-12-13 19:56:07,893 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557226763] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:56:07,893 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:56:07,893 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 19:56:07,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815519240] [2022-12-13 19:56:07,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:56:07,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:56:07,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:56:07,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:56:07,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 19:56:07,902 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 317 out of 691 [2022-12-13 19:56:07,902 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 159 transitions, 544 flow. Second operand has 3 states, 3 states have (on average 320.0) internal successors, (960), 3 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:56:07,903 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:56:07,903 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 317 of 691 [2022-12-13 19:56:07,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:56:17,939 INFO L130 PetriNetUnfolder]: 92293/144165 cut-off events. [2022-12-13 19:56:17,939 INFO L131 PetriNetUnfolder]: For 32374/32374 co-relation queries the response was YES. [2022-12-13 19:56:18,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 321612 conditions, 144165 events. 92293/144165 cut-off events. For 32374/32374 co-relation queries the response was YES. Maximal size of possible extension queue 4021. Compared 1278263 event pairs, 9216 based on Foata normal form. 0/108520 useless extension candidates. Maximal degree in co-relation 321582. Up to 129492 conditions per place. [2022-12-13 19:56:19,038 INFO L137 encePairwiseOnDemand]: 687/691 looper letters, 192 selfloop transitions, 6 changer transitions 0/216 dead transitions. [2022-12-13 19:56:19,038 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 216 transitions, 1114 flow [2022-12-13 19:56:19,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:56:19,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 19:56:19,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1100 transitions. [2022-12-13 19:56:19,041 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5306319343945972 [2022-12-13 19:56:19,041 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1100 transitions. [2022-12-13 19:56:19,041 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1100 transitions. [2022-12-13 19:56:19,041 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:56:19,041 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1100 transitions. [2022-12-13 19:56:19,043 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 366.6666666666667) internal successors, (1100), 3 states have internal predecessors, (1100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:56:19,044 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 691.0) internal successors, (2764), 4 states have internal predecessors, (2764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:56:19,045 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 691.0) internal successors, (2764), 4 states have internal predecessors, (2764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:56:19,045 INFO L175 Difference]: Start difference. First operand has 150 places, 159 transitions, 544 flow. Second operand 3 states and 1100 transitions. [2022-12-13 19:56:19,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 216 transitions, 1114 flow [2022-12-13 19:56:19,202 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 216 transitions, 1114 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 19:56:19,203 INFO L231 Difference]: Finished difference. Result has 152 places, 159 transitions, 566 flow [2022-12-13 19:56:19,204 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=691, PETRI_DIFFERENCE_MINUEND_FLOW=540, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=566, PETRI_PLACES=152, PETRI_TRANSITIONS=159} [2022-12-13 19:56:19,204 INFO L288 CegarLoopForPetriNet]: 118 programPoint places, 34 predicate places. [2022-12-13 19:56:19,204 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 159 transitions, 566 flow [2022-12-13 19:56:19,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 320.0) internal successors, (960), 3 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:56:19,204 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:56:19,204 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 3, 2, 2, 1, 1, 1, 1, 1] [2022-12-13 19:56:19,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-13 19:56:19,204 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2022-12-13 19:56:19,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:56:19,205 INFO L85 PathProgramCache]: Analyzing trace with hash 418246692, now seen corresponding path program 1 times [2022-12-13 19:56:19,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:56:19,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033317915] [2022-12-13 19:56:19,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:56:19,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:56:19,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 19:56:19,218 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 19:56:19,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 19:56:19,230 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 19:56:19,230 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 19:56:19,230 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (34 of 35 remaining) [2022-12-13 19:56:19,230 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (33 of 35 remaining) [2022-12-13 19:56:19,230 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (32 of 35 remaining) [2022-12-13 19:56:19,230 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (31 of 35 remaining) [2022-12-13 19:56:19,231 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (30 of 35 remaining) [2022-12-13 19:56:19,231 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 35 remaining) [2022-12-13 19:56:19,231 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 35 remaining) [2022-12-13 19:56:19,231 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 35 remaining) [2022-12-13 19:56:19,231 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 35 remaining) [2022-12-13 19:56:19,231 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 35 remaining) [2022-12-13 19:56:19,231 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 35 remaining) [2022-12-13 19:56:19,231 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 35 remaining) [2022-12-13 19:56:19,231 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 35 remaining) [2022-12-13 19:56:19,231 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 35 remaining) [2022-12-13 19:56:19,232 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 35 remaining) [2022-12-13 19:56:19,232 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 35 remaining) [2022-12-13 19:56:19,232 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 35 remaining) [2022-12-13 19:56:19,232 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 35 remaining) [2022-12-13 19:56:19,232 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 35 remaining) [2022-12-13 19:56:19,232 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 35 remaining) [2022-12-13 19:56:19,232 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 35 remaining) [2022-12-13 19:56:19,232 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 35 remaining) [2022-12-13 19:56:19,232 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 35 remaining) [2022-12-13 19:56:19,232 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 35 remaining) [2022-12-13 19:56:19,233 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 35 remaining) [2022-12-13 19:56:19,233 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 35 remaining) [2022-12-13 19:56:19,233 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 35 remaining) [2022-12-13 19:56:19,233 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 35 remaining) [2022-12-13 19:56:19,233 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 35 remaining) [2022-12-13 19:56:19,233 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 35 remaining) [2022-12-13 19:56:19,233 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 35 remaining) [2022-12-13 19:56:19,233 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 35 remaining) [2022-12-13 19:56:19,233 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 35 remaining) [2022-12-13 19:56:19,234 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 35 remaining) [2022-12-13 19:56:19,234 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 35 remaining) [2022-12-13 19:56:19,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-13 19:56:19,234 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:56:19,234 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-13 19:56:19,235 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-12-13 19:56:19,263 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-12-13 19:56:19,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 396 places, 464 transitions, 958 flow [2022-12-13 19:56:19,393 INFO L130 PetriNetUnfolder]: 168/1050 cut-off events. [2022-12-13 19:56:19,393 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-12-13 19:56:19,405 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1078 conditions, 1050 events. 168/1050 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 5982 event pairs, 1 based on Foata normal form. 0/798 useless extension candidates. Maximal degree in co-relation 739. Up to 16 conditions per place. [2022-12-13 19:56:19,405 INFO L82 GeneralOperation]: Start removeDead. Operand has 396 places, 464 transitions, 958 flow [2022-12-13 19:56:19,414 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 396 places, 464 transitions, 958 flow [2022-12-13 19:56:19,414 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 19:56:19,414 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 396 places, 464 transitions, 958 flow [2022-12-13 19:56:19,414 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 396 places, 464 transitions, 958 flow [2022-12-13 19:56:19,414 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 396 places, 464 transitions, 958 flow [2022-12-13 19:56:19,533 INFO L130 PetriNetUnfolder]: 168/1050 cut-off events. [2022-12-13 19:56:19,533 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-12-13 19:56:19,545 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1078 conditions, 1050 events. 168/1050 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 5982 event pairs, 1 based on Foata normal form. 0/798 useless extension candidates. Maximal degree in co-relation 739. Up to 16 conditions per place. [2022-12-13 19:56:19,752 INFO L119 LiptonReduction]: Number of co-enabled transitions 127920 [2022-12-13 19:56:23,514 INFO L134 LiptonReduction]: Checked pairs total: 227943 [2022-12-13 19:56:23,515 INFO L136 LiptonReduction]: Total number of compositions: 377 [2022-12-13 19:56:23,516 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 19:56:23,516 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;@434e3756, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 19:56:23,516 INFO L358 AbstractCegarLoop]: Starting to check reachability of 41 error locations. [2022-12-13 19:56:23,517 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2022-12-13 19:56:23,517 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 19:56:23,517 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:56:23,517 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-12-13 19:56:23,517 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2022-12-13 19:56:23,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:56:23,518 INFO L85 PathProgramCache]: Analyzing trace with hash 90544, now seen corresponding path program 1 times [2022-12-13 19:56:23,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:56:23,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424479051] [2022-12-13 19:56:23,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:56:23,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:56:23,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:23,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:56:23,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:56:23,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424479051] [2022-12-13 19:56:23,532 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424479051] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:56:23,532 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:56:23,532 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 19:56:23,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60468350] [2022-12-13 19:56:23,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:56:23,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:56:23,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:56:23,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:56:23,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 19:56:23,542 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 387 out of 841 [2022-12-13 19:56:23,543 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 201 transitions, 432 flow. Second operand has 3 states, 3 states have (on average 387.6666666666667) internal successors, (1163), 3 states have internal predecessors, (1163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:56:23,543 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:56:23,543 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 387 of 841 [2022-12-13 19:56:23,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand