./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_79-equ_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7999f3c-855d-4206-9166-12499a0bae02/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7999f3c-855d-4206-9166-12499a0bae02/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_d7999f3c-855d-4206-9166-12499a0bae02/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7999f3c-855d-4206-9166-12499a0bae02/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_79-equ_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7999f3c-855d-4206-9166-12499a0bae02/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_d7999f3c-855d-4206-9166-12499a0bae02/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 5ac72ff2379990464c5f55660be1e08b12557a61aceeef8401296ef66be035fc --- 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 13:28:29,543 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 13:28:29,544 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 13:28:29,561 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 13:28:29,561 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 13:28:29,562 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 13:28:29,563 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 13:28:29,565 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 13:28:29,566 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 13:28:29,567 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 13:28:29,568 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 13:28:29,569 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 13:28:29,569 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 13:28:29,570 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 13:28:29,571 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 13:28:29,572 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 13:28:29,573 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 13:28:29,574 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 13:28:29,575 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 13:28:29,577 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 13:28:29,578 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 13:28:29,579 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 13:28:29,580 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 13:28:29,581 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 13:28:29,584 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 13:28:29,584 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 13:28:29,585 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 13:28:29,585 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 13:28:29,586 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 13:28:29,587 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 13:28:29,587 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 13:28:29,588 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 13:28:29,588 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 13:28:29,589 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 13:28:29,590 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 13:28:29,590 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 13:28:29,590 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 13:28:29,591 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 13:28:29,591 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 13:28:29,592 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 13:28:29,592 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 13:28:29,593 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7999f3c-855d-4206-9166-12499a0bae02/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-12-13 13:28:29,612 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 13:28:29,612 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 13:28:29,612 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 13:28:29,612 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 13:28:29,618 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 13:28:29,618 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 13:28:29,619 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 13:28:29,619 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 13:28:29,619 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 13:28:29,619 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 13:28:29,619 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 13:28:29,620 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 13:28:29,620 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 13:28:29,620 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 13:28:29,620 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 13:28:29,620 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 13:28:29,621 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 13:28:29,621 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 13:28:29,621 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-13 13:28:29,621 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 13:28:29,621 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 13:28:29,621 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 13:28:29,622 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 13:28:29,622 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 13:28:29,622 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 13:28:29,622 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 13:28:29,622 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 13:28:29,623 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 13:28:29,623 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 13:28:29,623 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 13:28:29,623 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 13:28:29,623 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 13:28:29,624 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 13:28:29,624 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 13:28:29,624 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 13:28:29,624 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 13:28:29,624 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 13:28:29,624 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_d7999f3c-855d-4206-9166-12499a0bae02/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7999f3c-855d-4206-9166-12499a0bae02/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5ac72ff2379990464c5f55660be1e08b12557a61aceeef8401296ef66be035fc [2022-12-13 13:28:29,809 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 13:28:29,826 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 13:28:29,828 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 13:28:29,829 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 13:28:29,829 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 13:28:29,830 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7999f3c-855d-4206-9166-12499a0bae02/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/goblint-regression/28-race_reach_79-equ_racefree.i [2022-12-13 13:28:32,426 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 13:28:32,703 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 13:28:32,704 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7999f3c-855d-4206-9166-12499a0bae02/sv-benchmarks/c/goblint-regression/28-race_reach_79-equ_racefree.i [2022-12-13 13:28:32,716 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7999f3c-855d-4206-9166-12499a0bae02/bin/uautomizer-uyxdKDjOR8/data/4f85d9dcb/c097dc3ac2d14c3ebab63189adc38868/FLAG9fb06bc82 [2022-12-13 13:28:32,727 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7999f3c-855d-4206-9166-12499a0bae02/bin/uautomizer-uyxdKDjOR8/data/4f85d9dcb/c097dc3ac2d14c3ebab63189adc38868 [2022-12-13 13:28:32,730 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 13:28:32,731 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 13:28:32,732 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 13:28:32,732 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 13:28:32,734 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 13:28:32,735 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 01:28:32" (1/1) ... [2022-12-13 13:28:32,736 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78805a2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:28:32, skipping insertion in model container [2022-12-13 13:28:32,736 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 01:28:32" (1/1) ... [2022-12-13 13:28:32,741 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 13:28:32,778 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 13:28:33,145 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_d7999f3c-855d-4206-9166-12499a0bae02/sv-benchmarks/c/goblint-regression/28-race_reach_79-equ_racefree.i[47038,47051] [2022-12-13 13:28:33,169 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 13:28:33,182 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 13:28:33,212 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_d7999f3c-855d-4206-9166-12499a0bae02/sv-benchmarks/c/goblint-regression/28-race_reach_79-equ_racefree.i[47038,47051] [2022-12-13 13:28:33,224 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 13:28:33,261 INFO L208 MainTranslator]: Completed translation [2022-12-13 13:28:33,261 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:28:33 WrapperNode [2022-12-13 13:28:33,261 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 13:28:33,262 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 13:28:33,262 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 13:28:33,262 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 13:28:33,267 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:28:33" (1/1) ... [2022-12-13 13:28:33,282 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:28:33" (1/1) ... [2022-12-13 13:28:33,307 INFO L138 Inliner]: procedures = 271, calls = 56, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 217 [2022-12-13 13:28:33,308 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 13:28:33,308 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 13:28:33,309 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 13:28:33,309 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 13:28:33,317 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:28:33" (1/1) ... [2022-12-13 13:28:33,318 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:28:33" (1/1) ... [2022-12-13 13:28:33,321 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:28:33" (1/1) ... [2022-12-13 13:28:33,321 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:28:33" (1/1) ... [2022-12-13 13:28:33,328 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:28:33" (1/1) ... [2022-12-13 13:28:33,333 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:28:33" (1/1) ... [2022-12-13 13:28:33,335 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:28:33" (1/1) ... [2022-12-13 13:28:33,337 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:28:33" (1/1) ... [2022-12-13 13:28:33,340 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 13:28:33,341 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 13:28:33,341 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 13:28:33,341 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 13:28:33,342 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:28:33" (1/1) ... [2022-12-13 13:28:33,347 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 13:28:33,355 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7999f3c-855d-4206-9166-12499a0bae02/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:28:33,367 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7999f3c-855d-4206-9166-12499a0bae02/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 13:28:33,369 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7999f3c-855d-4206-9166-12499a0bae02/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 13:28:33,393 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 13:28:33,394 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 13:28:33,394 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 13:28:33,394 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 13:28:33,394 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-12-13 13:28:33,394 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 13:28:33,394 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-12-13 13:28:33,395 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-12-13 13:28:33,395 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 13:28:33,395 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 13:28:33,395 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 13:28:33,396 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 13:28:33,501 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 13:28:33,502 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 13:28:33,763 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 13:28:33,772 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 13:28:33,772 INFO L300 CfgBuilder]: Removed 22 assume(true) statements. [2022-12-13 13:28:33,775 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 01:28:33 BoogieIcfgContainer [2022-12-13 13:28:33,775 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 13:28:33,778 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 13:28:33,778 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 13:28:33,781 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 13:28:33,782 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 01:28:32" (1/3) ... [2022-12-13 13:28:33,782 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3070e0cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 01:28:33, skipping insertion in model container [2022-12-13 13:28:33,782 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:28:33" (2/3) ... [2022-12-13 13:28:33,783 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3070e0cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 01:28:33, skipping insertion in model container [2022-12-13 13:28:33,783 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 01:28:33" (3/3) ... [2022-12-13 13:28:33,784 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_79-equ_racefree.i [2022-12-13 13:28:33,793 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 13:28:33,804 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 13:28:33,804 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2022-12-13 13:28:33,804 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 13:28:33,864 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-12-13 13:28:33,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 210 places, 236 transitions, 480 flow [2022-12-13 13:28:33,995 INFO L130 PetriNetUnfolder]: 43/315 cut-off events. [2022-12-13 13:28:33,995 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 13:28:34,003 INFO L83 FinitePrefix]: Finished finitePrefix Result has 321 conditions, 315 events. 43/315 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1019 event pairs, 0 based on Foata normal form. 0/249 useless extension candidates. Maximal degree in co-relation 153. Up to 8 conditions per place. [2022-12-13 13:28:34,003 INFO L82 GeneralOperation]: Start removeDead. Operand has 210 places, 236 transitions, 480 flow [2022-12-13 13:28:34,010 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 207 places, 231 transitions, 470 flow [2022-12-13 13:28:34,014 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 13:28:34,022 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 207 places, 231 transitions, 470 flow [2022-12-13 13:28:34,025 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 207 places, 231 transitions, 470 flow [2022-12-13 13:28:34,025 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 207 places, 231 transitions, 470 flow [2022-12-13 13:28:34,079 INFO L130 PetriNetUnfolder]: 41/310 cut-off events. [2022-12-13 13:28:34,079 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 13:28:34,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 316 conditions, 310 events. 41/310 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1035 event pairs, 0 based on Foata normal form. 0/246 useless extension candidates. Maximal degree in co-relation 153. Up to 8 conditions per place. [2022-12-13 13:28:34,087 INFO L119 LiptonReduction]: Number of co-enabled transitions 11570 [2022-12-13 13:28:41,050 INFO L134 LiptonReduction]: Checked pairs total: 30467 [2022-12-13 13:28:41,050 INFO L136 LiptonReduction]: Total number of compositions: 222 [2022-12-13 13:28:41,060 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 13:28:41,064 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;@5ec52663, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 13:28:41,064 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2022-12-13 13:28:41,065 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2022-12-13 13:28:41,065 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 13:28:41,065 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:28:41,066 INFO L209 CegarLoopForPetriNet]: trace histogram [1] [2022-12-13 13:28:41,066 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-12-13 13:28:41,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:28:41,069 INFO L85 PathProgramCache]: Analyzing trace with hash 899, now seen corresponding path program 1 times [2022-12-13 13:28:41,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:28:41,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824255149] [2022-12-13 13:28:41,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:28:41,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:28:41,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:41,154 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 13:28:41,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:28:41,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824255149] [2022-12-13 13:28:41,155 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824255149] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:28:41,155 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:28:41,155 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-12-13 13:28:41,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569601788] [2022-12-13 13:28:41,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:28:41,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 13:28:41,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:28:41,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 13:28:41,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 13:28:41,180 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 458 [2022-12-13 13:28:41,182 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 84 transitions, 176 flow. Second operand has 2 states, 2 states have (on average 208.5) internal successors, (417), 2 states have internal predecessors, (417), 0 states have call successors, (0), 0 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 13:28:41,182 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:28:41,183 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 458 [2022-12-13 13:28:41,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:28:41,349 INFO L130 PetriNetUnfolder]: 522/1136 cut-off events. [2022-12-13 13:28:41,349 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 13:28:41,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2184 conditions, 1136 events. 522/1136 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 6522 event pairs, 475 based on Foata normal form. 212/993 useless extension candidates. Maximal degree in co-relation 2119. Up to 1042 conditions per place. [2022-12-13 13:28:41,354 INFO L137 encePairwiseOnDemand]: 431/458 looper letters, 49 selfloop transitions, 0 changer transitions 0/57 dead transitions. [2022-12-13 13:28:41,354 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 57 transitions, 220 flow [2022-12-13 13:28:41,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 13:28:41,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-12-13 13:28:41,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 492 transitions. [2022-12-13 13:28:41,364 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.537117903930131 [2022-12-13 13:28:41,365 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 492 transitions. [2022-12-13 13:28:41,365 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 492 transitions. [2022-12-13 13:28:41,366 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:28:41,368 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 492 transitions. [2022-12-13 13:28:41,370 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 246.0) internal successors, (492), 2 states have internal predecessors, (492), 0 states have call successors, (0), 0 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 13:28:41,375 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 458.0) internal successors, (1374), 3 states have internal predecessors, (1374), 0 states have call successors, (0), 0 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 13:28:41,376 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 458.0) internal successors, (1374), 3 states have internal predecessors, (1374), 0 states have call successors, (0), 0 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 13:28:41,377 INFO L175 Difference]: Start difference. First operand has 63 places, 84 transitions, 176 flow. Second operand 2 states and 492 transitions. [2022-12-13 13:28:41,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 57 transitions, 220 flow [2022-12-13 13:28:41,380 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 57 transitions, 220 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 13:28:41,381 INFO L231 Difference]: Finished difference. Result has 59 places, 57 transitions, 122 flow [2022-12-13 13:28:41,383 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=458, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=122, PETRI_PLACES=59, PETRI_TRANSITIONS=57} [2022-12-13 13:28:41,385 INFO L288 CegarLoopForPetriNet]: 63 programPoint places, -4 predicate places. [2022-12-13 13:28:41,386 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 57 transitions, 122 flow [2022-12-13 13:28:41,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 208.5) internal successors, (417), 2 states have internal predecessors, (417), 0 states have call successors, (0), 0 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 13:28:41,386 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:28:41,386 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-12-13 13:28:41,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 13:28:41,386 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-12-13 13:28:41,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:28:41,387 INFO L85 PathProgramCache]: Analyzing trace with hash 27739087, now seen corresponding path program 1 times [2022-12-13 13:28:41,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:28:41,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923717993] [2022-12-13 13:28:41,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:28:41,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:28:41,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:41,534 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 13:28:41,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:28:41,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923717993] [2022-12-13 13:28:41,534 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923717993] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:28:41,534 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:28:41,535 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 13:28:41,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230149172] [2022-12-13 13:28:41,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:28:41,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 13:28:41,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:28:41,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 13:28:41,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 13:28:41,548 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 204 out of 458 [2022-12-13 13:28:41,549 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 57 transitions, 122 flow. Second operand has 3 states, 3 states have (on average 205.33333333333334) internal successors, (616), 3 states have internal predecessors, (616), 0 states have call successors, (0), 0 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 13:28:41,549 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:28:41,549 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 204 of 458 [2022-12-13 13:28:41,550 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:28:41,702 INFO L130 PetriNetUnfolder]: 458/1006 cut-off events. [2022-12-13 13:28:41,702 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 13:28:41,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1955 conditions, 1006 events. 458/1006 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 6403 event pairs, 0 based on Foata normal form. 0/719 useless extension candidates. Maximal degree in co-relation 1951. Up to 901 conditions per place. [2022-12-13 13:28:41,706 INFO L137 encePairwiseOnDemand]: 453/458 looper letters, 65 selfloop transitions, 2 changer transitions 0/75 dead transitions. [2022-12-13 13:28:41,706 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 75 transitions, 292 flow [2022-12-13 13:28:41,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 13:28:41,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 13:28:41,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 682 transitions. [2022-12-13 13:28:41,708 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4963609898107715 [2022-12-13 13:28:41,708 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 682 transitions. [2022-12-13 13:28:41,708 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 682 transitions. [2022-12-13 13:28:41,709 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:28:41,709 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 682 transitions. [2022-12-13 13:28:41,710 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 227.33333333333334) internal successors, (682), 3 states have internal predecessors, (682), 0 states have call successors, (0), 0 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 13:28:41,713 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 458.0) internal successors, (1832), 4 states have internal predecessors, (1832), 0 states have call successors, (0), 0 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 13:28:41,713 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 458.0) internal successors, (1832), 4 states have internal predecessors, (1832), 0 states have call successors, (0), 0 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 13:28:41,714 INFO L175 Difference]: Start difference. First operand has 59 places, 57 transitions, 122 flow. Second operand 3 states and 682 transitions. [2022-12-13 13:28:41,714 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 75 transitions, 292 flow [2022-12-13 13:28:41,715 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 75 transitions, 292 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 13:28:41,716 INFO L231 Difference]: Finished difference. Result has 60 places, 55 transitions, 126 flow [2022-12-13 13:28:41,716 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=458, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=126, PETRI_PLACES=60, PETRI_TRANSITIONS=55} [2022-12-13 13:28:41,717 INFO L288 CegarLoopForPetriNet]: 63 programPoint places, -3 predicate places. [2022-12-13 13:28:41,717 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 55 transitions, 126 flow [2022-12-13 13:28:41,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 205.33333333333334) internal successors, (616), 3 states have internal predecessors, (616), 0 states have call successors, (0), 0 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 13:28:41,718 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:28:41,718 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2022-12-13 13:28:41,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 13:28:41,718 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-12-13 13:28:41,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:28:41,719 INFO L85 PathProgramCache]: Analyzing trace with hash 887537725, now seen corresponding path program 1 times [2022-12-13 13:28:41,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:28:41,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203573827] [2022-12-13 13:28:41,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:28:41,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:28:41,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 13:28:41,744 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 13:28:41,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 13:28:41,770 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 13:28:41,770 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 13:28:41,771 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 21 remaining) [2022-12-13 13:28:41,772 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 21 remaining) [2022-12-13 13:28:41,773 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 21 remaining) [2022-12-13 13:28:41,773 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 21 remaining) [2022-12-13 13:28:41,773 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 21 remaining) [2022-12-13 13:28:41,773 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 21 remaining) [2022-12-13 13:28:41,773 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 21 remaining) [2022-12-13 13:28:41,773 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 21 remaining) [2022-12-13 13:28:41,773 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 21 remaining) [2022-12-13 13:28:41,773 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 21 remaining) [2022-12-13 13:28:41,774 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 21 remaining) [2022-12-13 13:28:41,774 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 21 remaining) [2022-12-13 13:28:41,774 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 21 remaining) [2022-12-13 13:28:41,774 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 21 remaining) [2022-12-13 13:28:41,774 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 21 remaining) [2022-12-13 13:28:41,774 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 21 remaining) [2022-12-13 13:28:41,774 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 21 remaining) [2022-12-13 13:28:41,774 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 21 remaining) [2022-12-13 13:28:41,774 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 21 remaining) [2022-12-13 13:28:41,775 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 21 remaining) [2022-12-13 13:28:41,775 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 21 remaining) [2022-12-13 13:28:41,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 13:28:41,775 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-12-13 13:28:41,777 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-13 13:28:41,777 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-12-13 13:28:41,802 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-13 13:28:41,810 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 266 places, 303 transitions, 624 flow [2022-12-13 13:28:41,858 INFO L130 PetriNetUnfolder]: 72/498 cut-off events. [2022-12-13 13:28:41,858 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-12-13 13:28:41,860 INFO L83 FinitePrefix]: Finished finitePrefix Result has 512 conditions, 498 events. 72/498 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1977 event pairs, 0 based on Foata normal form. 0/388 useless extension candidates. Maximal degree in co-relation 317. Up to 12 conditions per place. [2022-12-13 13:28:41,860 INFO L82 GeneralOperation]: Start removeDead. Operand has 266 places, 303 transitions, 624 flow [2022-12-13 13:28:41,863 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 265 places, 301 transitions, 620 flow [2022-12-13 13:28:41,863 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 13:28:41,863 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 265 places, 301 transitions, 620 flow [2022-12-13 13:28:41,864 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 265 places, 301 transitions, 620 flow [2022-12-13 13:28:41,864 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 265 places, 301 transitions, 620 flow [2022-12-13 13:28:41,904 INFO L130 PetriNetUnfolder]: 71/496 cut-off events. [2022-12-13 13:28:41,904 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-12-13 13:28:41,906 INFO L83 FinitePrefix]: Finished finitePrefix Result has 510 conditions, 496 events. 71/496 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1989 event pairs, 0 based on Foata normal form. 0/387 useless extension candidates. Maximal degree in co-relation 315. Up to 12 conditions per place. [2022-12-13 13:28:41,918 INFO L119 LiptonReduction]: Number of co-enabled transitions 34060 [2022-12-13 13:28:48,736 INFO L134 LiptonReduction]: Checked pairs total: 85557 [2022-12-13 13:28:48,737 INFO L136 LiptonReduction]: Total number of compositions: 279 [2022-12-13 13:28:48,738 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 13:28:48,738 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;@5ec52663, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 13:28:48,739 INFO L358 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2022-12-13 13:28:48,739 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2022-12-13 13:28:48,739 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 13:28:48,739 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:28:48,739 INFO L209 CegarLoopForPetriNet]: trace histogram [1] [2022-12-13 13:28:48,740 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-12-13 13:28:48,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:28:48,740 INFO L85 PathProgramCache]: Analyzing trace with hash 1544, now seen corresponding path program 1 times [2022-12-13 13:28:48,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:28:48,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442645359] [2022-12-13 13:28:48,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:28:48,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:28:48,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:48,746 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 13:28:48,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:28:48,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442645359] [2022-12-13 13:28:48,746 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442645359] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:28:48,746 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:28:48,746 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-12-13 13:28:48,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742080001] [2022-12-13 13:28:48,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:28:48,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 13:28:48,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:28:48,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 13:28:48,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 13:28:48,748 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 261 out of 582 [2022-12-13 13:28:48,748 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 118 transitions, 254 flow. Second operand has 2 states, 2 states have (on average 261.5) internal successors, (523), 2 states have internal predecessors, (523), 0 states have call successors, (0), 0 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 13:28:48,748 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:28:48,748 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 261 of 582 [2022-12-13 13:28:48,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:28:50,561 INFO L130 PetriNetUnfolder]: 19099/30153 cut-off events. [2022-12-13 13:28:50,561 INFO L131 PetriNetUnfolder]: For 129/129 co-relation queries the response was YES. [2022-12-13 13:28:50,584 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58293 conditions, 30153 events. 19099/30153 cut-off events. For 129/129 co-relation queries the response was YES. Maximal size of possible extension queue 1138. Compared 225506 event pairs, 17746 based on Foata normal form. 4547/26117 useless extension candidates. Maximal degree in co-relation 24424. Up to 28026 conditions per place. [2022-12-13 13:28:50,686 INFO L137 encePairwiseOnDemand]: 546/582 looper letters, 69 selfloop transitions, 0 changer transitions 0/82 dead transitions. [2022-12-13 13:28:50,687 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 82 transitions, 320 flow [2022-12-13 13:28:50,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 13:28:50,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-12-13 13:28:50,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 627 transitions. [2022-12-13 13:28:50,690 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.538659793814433 [2022-12-13 13:28:50,690 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 627 transitions. [2022-12-13 13:28:50,690 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 627 transitions. [2022-12-13 13:28:50,691 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:28:50,691 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 627 transitions. [2022-12-13 13:28:50,692 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 313.5) internal successors, (627), 2 states have internal predecessors, (627), 0 states have call successors, (0), 0 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 13:28:50,693 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 582.0) internal successors, (1746), 3 states have internal predecessors, (1746), 0 states have call successors, (0), 0 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 13:28:50,694 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 582.0) internal successors, (1746), 3 states have internal predecessors, (1746), 0 states have call successors, (0), 0 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 13:28:50,694 INFO L175 Difference]: Start difference. First operand has 86 places, 118 transitions, 254 flow. Second operand 2 states and 627 transitions. [2022-12-13 13:28:50,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 82 transitions, 320 flow [2022-12-13 13:28:50,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 82 transitions, 320 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 13:28:50,697 INFO L231 Difference]: Finished difference. Result has 83 places, 82 transitions, 182 flow [2022-12-13 13:28:50,697 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=582, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=182, PETRI_PLACES=83, PETRI_TRANSITIONS=82} [2022-12-13 13:28:50,697 INFO L288 CegarLoopForPetriNet]: 86 programPoint places, -3 predicate places. [2022-12-13 13:28:50,697 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 82 transitions, 182 flow [2022-12-13 13:28:50,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 261.5) internal successors, (523), 2 states have internal predecessors, (523), 0 states have call successors, (0), 0 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 13:28:50,698 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:28:50,698 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 13:28:50,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 13:28:50,698 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-12-13 13:28:50,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:28:50,699 INFO L85 PathProgramCache]: Analyzing trace with hash 1479009662, now seen corresponding path program 1 times [2022-12-13 13:28:50,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:28:50,699 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437154760] [2022-12-13 13:28:50,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:28:50,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:28:50,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:50,758 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 13:28:50,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:28:50,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437154760] [2022-12-13 13:28:50,758 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437154760] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:28:50,758 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:28:50,758 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 13:28:50,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553434275] [2022-12-13 13:28:50,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:28:50,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 13:28:50,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:28:50,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 13:28:50,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 13:28:50,767 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 257 out of 582 [2022-12-13 13:28:50,768 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 82 transitions, 182 flow. Second operand has 3 states, 3 states have (on average 258.3333333333333) internal successors, (775), 3 states have internal predecessors, (775), 0 states have call successors, (0), 0 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 13:28:50,768 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:28:50,768 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 257 of 582 [2022-12-13 13:28:50,768 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:28:52,354 INFO L130 PetriNetUnfolder]: 18578/29452 cut-off events. [2022-12-13 13:28:52,354 INFO L131 PetriNetUnfolder]: For 87/87 co-relation queries the response was YES. [2022-12-13 13:28:52,376 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57413 conditions, 29452 events. 18578/29452 cut-off events. For 87/87 co-relation queries the response was YES. Maximal size of possible extension queue 1098. Compared 223143 event pairs, 8532 based on Foata normal form. 0/21023 useless extension candidates. Maximal degree in co-relation 57408. Up to 27806 conditions per place. [2022-12-13 13:28:52,447 INFO L137 encePairwiseOnDemand]: 577/582 looper letters, 86 selfloop transitions, 2 changer transitions 0/101 dead transitions. [2022-12-13 13:28:52,447 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 101 transitions, 396 flow [2022-12-13 13:28:52,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 13:28:52,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 13:28:52,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 862 transitions. [2022-12-13 13:28:52,449 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4936998854524628 [2022-12-13 13:28:52,449 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 862 transitions. [2022-12-13 13:28:52,449 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 862 transitions. [2022-12-13 13:28:52,449 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:28:52,449 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 862 transitions. [2022-12-13 13:28:52,451 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 287.3333333333333) internal successors, (862), 3 states have internal predecessors, (862), 0 states have call successors, (0), 0 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 13:28:52,453 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 582.0) internal successors, (2328), 4 states have internal predecessors, (2328), 0 states have call successors, (0), 0 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 13:28:52,454 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 582.0) internal successors, (2328), 4 states have internal predecessors, (2328), 0 states have call successors, (0), 0 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 13:28:52,454 INFO L175 Difference]: Start difference. First operand has 83 places, 82 transitions, 182 flow. Second operand 3 states and 862 transitions. [2022-12-13 13:28:52,454 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 101 transitions, 396 flow [2022-12-13 13:28:52,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 101 transitions, 396 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 13:28:52,456 INFO L231 Difference]: Finished difference. Result has 86 places, 83 transitions, 198 flow [2022-12-13 13:28:52,456 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=582, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=198, PETRI_PLACES=86, PETRI_TRANSITIONS=83} [2022-12-13 13:28:52,456 INFO L288 CegarLoopForPetriNet]: 86 programPoint places, 0 predicate places. [2022-12-13 13:28:52,457 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 83 transitions, 198 flow [2022-12-13 13:28:52,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 258.3333333333333) internal successors, (775), 3 states have internal predecessors, (775), 0 states have call successors, (0), 0 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 13:28:52,457 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:28:52,457 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:28:52,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 13:28:52,457 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-12-13 13:28:52,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:28:52,458 INFO L85 PathProgramCache]: Analyzing trace with hash -563832365, now seen corresponding path program 1 times [2022-12-13 13:28:52,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:28:52,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784784501] [2022-12-13 13:28:52,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:28:52,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:28:52,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:52,574 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 13:28:52,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:28:52,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784784501] [2022-12-13 13:28:52,575 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784784501] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:28:52,575 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:28:52,575 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 13:28:52,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881147028] [2022-12-13 13:28:52,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:28:52,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 13:28:52,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:28:52,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 13:28:52,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 13:28:52,669 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 249 out of 582 [2022-12-13 13:28:52,670 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 83 transitions, 198 flow. Second operand has 4 states, 4 states have (on average 250.5) internal successors, (1002), 4 states have internal predecessors, (1002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:28:52,670 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:28:52,670 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 249 of 582 [2022-12-13 13:28:52,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:28:54,669 INFO L130 PetriNetUnfolder]: 20011/32432 cut-off events. [2022-12-13 13:28:54,670 INFO L131 PetriNetUnfolder]: For 890/890 co-relation queries the response was YES. [2022-12-13 13:28:54,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64706 conditions, 32432 events. 20011/32432 cut-off events. For 890/890 co-relation queries the response was YES. Maximal size of possible extension queue 1261. Compared 253885 event pairs, 7144 based on Foata normal form. 0/24679 useless extension candidates. Maximal degree in co-relation 64699. Up to 22847 conditions per place. [2022-12-13 13:28:54,780 INFO L137 encePairwiseOnDemand]: 567/582 looper letters, 157 selfloop transitions, 12 changer transitions 0/182 dead transitions. [2022-12-13 13:28:54,780 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 182 transitions, 770 flow [2022-12-13 13:28:54,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 13:28:54,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 13:28:54,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1173 transitions. [2022-12-13 13:28:54,782 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5038659793814433 [2022-12-13 13:28:54,782 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1173 transitions. [2022-12-13 13:28:54,782 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1173 transitions. [2022-12-13 13:28:54,783 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:28:54,783 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1173 transitions. [2022-12-13 13:28:54,784 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 293.25) internal successors, (1173), 4 states have internal predecessors, (1173), 0 states have call successors, (0), 0 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 13:28:54,787 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 582.0) internal successors, (2910), 5 states have internal predecessors, (2910), 0 states have call successors, (0), 0 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 13:28:54,788 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 582.0) internal successors, (2910), 5 states have internal predecessors, (2910), 0 states have call successors, (0), 0 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 13:28:54,788 INFO L175 Difference]: Start difference. First operand has 86 places, 83 transitions, 198 flow. Second operand 4 states and 1173 transitions. [2022-12-13 13:28:54,788 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 182 transitions, 770 flow [2022-12-13 13:28:54,790 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 182 transitions, 767 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 13:28:54,791 INFO L231 Difference]: Finished difference. Result has 91 places, 94 transitions, 302 flow [2022-12-13 13:28:54,791 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=582, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=302, PETRI_PLACES=91, PETRI_TRANSITIONS=94} [2022-12-13 13:28:54,792 INFO L288 CegarLoopForPetriNet]: 86 programPoint places, 5 predicate places. [2022-12-13 13:28:54,792 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 94 transitions, 302 flow [2022-12-13 13:28:54,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 250.5) internal successors, (1002), 4 states have internal predecessors, (1002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:28:54,792 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:28:54,792 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-12-13 13:28:54,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 13:28:54,793 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-12-13 13:28:54,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:28:54,793 INFO L85 PathProgramCache]: Analyzing trace with hash -1786422279, now seen corresponding path program 1 times [2022-12-13 13:28:54,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:28:54,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160971238] [2022-12-13 13:28:54,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:28:54,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:28:54,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:54,827 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:28:54,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:28:54,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160971238] [2022-12-13 13:28:54,828 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160971238] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:28:54,828 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:28:54,828 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 13:28:54,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291719855] [2022-12-13 13:28:54,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:28:54,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 13:28:54,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:28:54,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 13:28:54,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 13:28:54,838 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 257 out of 582 [2022-12-13 13:28:54,838 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 94 transitions, 302 flow. Second operand has 3 states, 3 states have (on average 259.3333333333333) internal successors, (778), 3 states have internal predecessors, (778), 0 states have call successors, (0), 0 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 13:28:54,839 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:28:54,839 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 257 of 582 [2022-12-13 13:28:54,839 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:28:56,700 INFO L130 PetriNetUnfolder]: 19376/31427 cut-off events. [2022-12-13 13:28:56,700 INFO L131 PetriNetUnfolder]: For 6744/6744 co-relation queries the response was YES. [2022-12-13 13:28:56,732 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70985 conditions, 31427 events. 19376/31427 cut-off events. For 6744/6744 co-relation queries the response was YES. Maximal size of possible extension queue 1233. Compared 244132 event pairs, 17654 based on Foata normal form. 0/25803 useless extension candidates. Maximal degree in co-relation 70976. Up to 29679 conditions per place. [2022-12-13 13:28:56,808 INFO L137 encePairwiseOnDemand]: 580/582 looper letters, 79 selfloop transitions, 1 changer transitions 0/93 dead transitions. [2022-12-13 13:28:56,808 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 93 transitions, 458 flow [2022-12-13 13:28:56,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 13:28:56,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 13:28:56,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 840 transitions. [2022-12-13 13:28:56,810 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.48109965635738833 [2022-12-13 13:28:56,810 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 840 transitions. [2022-12-13 13:28:56,810 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 840 transitions. [2022-12-13 13:28:56,811 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:28:56,811 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 840 transitions. [2022-12-13 13:28:56,812 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 280.0) internal successors, (840), 3 states have internal predecessors, (840), 0 states have call successors, (0), 0 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 13:28:56,814 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 582.0) internal successors, (2328), 4 states have internal predecessors, (2328), 0 states have call successors, (0), 0 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 13:28:56,815 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 582.0) internal successors, (2328), 4 states have internal predecessors, (2328), 0 states have call successors, (0), 0 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 13:28:56,815 INFO L175 Difference]: Start difference. First operand has 91 places, 94 transitions, 302 flow. Second operand 3 states and 840 transitions. [2022-12-13 13:28:56,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 93 transitions, 458 flow [2022-12-13 13:28:56,828 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 93 transitions, 458 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 13:28:56,829 INFO L231 Difference]: Finished difference. Result has 92 places, 93 transitions, 300 flow [2022-12-13 13:28:56,830 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=582, PETRI_DIFFERENCE_MINUEND_FLOW=298, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=300, PETRI_PLACES=92, PETRI_TRANSITIONS=93} [2022-12-13 13:28:56,830 INFO L288 CegarLoopForPetriNet]: 86 programPoint places, 6 predicate places. [2022-12-13 13:28:56,830 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 93 transitions, 300 flow [2022-12-13 13:28:56,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 259.3333333333333) internal successors, (778), 3 states have internal predecessors, (778), 0 states have call successors, (0), 0 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 13:28:56,831 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:28:56,831 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-12-13 13:28:56,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 13:28:56,832 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-12-13 13:28:56,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:28:56,832 INFO L85 PathProgramCache]: Analyzing trace with hash -1786422202, now seen corresponding path program 1 times [2022-12-13 13:28:56,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:28:56,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676627394] [2022-12-13 13:28:56,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:28:56,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:28:56,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:56,862 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 13:28:56,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:28:56,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676627394] [2022-12-13 13:28:56,863 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676627394] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:28:56,863 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:28:56,863 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 13:28:56,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843150927] [2022-12-13 13:28:56,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:28:56,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 13:28:56,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:28:56,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 13:28:56,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 13:28:56,871 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 256 out of 582 [2022-12-13 13:28:56,871 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 93 transitions, 300 flow. Second operand has 3 states, 3 states have (on average 258.3333333333333) internal successors, (775), 3 states have internal predecessors, (775), 0 states have call successors, (0), 0 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 13:28:56,872 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:28:56,872 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 256 of 582 [2022-12-13 13:28:56,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:28:58,949 INFO L130 PetriNetUnfolder]: 18616/30117 cut-off events. [2022-12-13 13:28:58,949 INFO L131 PetriNetUnfolder]: For 6053/6053 co-relation queries the response was YES. [2022-12-13 13:28:58,996 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68128 conditions, 30117 events. 18616/30117 cut-off events. For 6053/6053 co-relation queries the response was YES. Maximal size of possible extension queue 1245. Compared 238355 event pairs, 3503 based on Foata normal form. 0/25011 useless extension candidates. Maximal degree in co-relation 68118. Up to 26968 conditions per place. [2022-12-13 13:28:59,090 INFO L137 encePairwiseOnDemand]: 578/582 looper letters, 114 selfloop transitions, 5 changer transitions 0/132 dead transitions. [2022-12-13 13:28:59,090 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 132 transitions, 660 flow [2022-12-13 13:28:59,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 13:28:59,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 13:28:59,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 872 transitions. [2022-12-13 13:28:59,093 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49942726231386025 [2022-12-13 13:28:59,093 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 872 transitions. [2022-12-13 13:28:59,093 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 872 transitions. [2022-12-13 13:28:59,093 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:28:59,093 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 872 transitions. [2022-12-13 13:28:59,095 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 290.6666666666667) internal successors, (872), 3 states have internal predecessors, (872), 0 states have call successors, (0), 0 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 13:28:59,097 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 582.0) internal successors, (2328), 4 states have internal predecessors, (2328), 0 states have call successors, (0), 0 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 13:28:59,098 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 582.0) internal successors, (2328), 4 states have internal predecessors, (2328), 0 states have call successors, (0), 0 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 13:28:59,098 INFO L175 Difference]: Start difference. First operand has 92 places, 93 transitions, 300 flow. Second operand 3 states and 872 transitions. [2022-12-13 13:28:59,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 132 transitions, 660 flow [2022-12-13 13:28:59,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 132 transitions, 659 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 13:28:59,108 INFO L231 Difference]: Finished difference. Result has 93 places, 93 transitions, 316 flow [2022-12-13 13:28:59,108 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=582, PETRI_DIFFERENCE_MINUEND_FLOW=295, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=316, PETRI_PLACES=93, PETRI_TRANSITIONS=93} [2022-12-13 13:28:59,109 INFO L288 CegarLoopForPetriNet]: 86 programPoint places, 7 predicate places. [2022-12-13 13:28:59,109 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 93 transitions, 316 flow [2022-12-13 13:28:59,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 258.3333333333333) internal successors, (775), 3 states have internal predecessors, (775), 0 states have call successors, (0), 0 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 13:28:59,109 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:28:59,109 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:28:59,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 13:28:59,110 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-12-13 13:28:59,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:28:59,110 INFO L85 PathProgramCache]: Analyzing trace with hash 474985667, now seen corresponding path program 1 times [2022-12-13 13:28:59,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:28:59,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4741312] [2022-12-13 13:28:59,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:28:59,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:28:59,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:59,183 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 13:28:59,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:28:59,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4741312] [2022-12-13 13:28:59,184 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4741312] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:28:59,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1833529431] [2022-12-13 13:28:59,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:28:59,184 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:28:59,185 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7999f3c-855d-4206-9166-12499a0bae02/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:28:59,186 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7999f3c-855d-4206-9166-12499a0bae02/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:28:59,187 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7999f3c-855d-4206-9166-12499a0bae02/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 13:28:59,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:59,247 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 13:28:59,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:28:59,507 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 13:28:59,507 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 13:28:59,524 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 13:28:59,524 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1833529431] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 13:28:59,524 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 13:28:59,524 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2022-12-13 13:28:59,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536658137] [2022-12-13 13:28:59,525 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 13:28:59,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 13:28:59,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:28:59,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 13:28:59,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-12-13 13:28:59,540 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 256 out of 582 [2022-12-13 13:28:59,543 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 93 transitions, 316 flow. Second operand has 6 states, 6 states have (on average 258.1666666666667) internal successors, (1549), 6 states have internal predecessors, (1549), 0 states have call successors, (0), 0 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 13:28:59,543 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:28:59,543 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 256 of 582 [2022-12-13 13:28:59,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:28:59,908 INFO L130 PetriNetUnfolder]: 1646/3131 cut-off events. [2022-12-13 13:28:59,908 INFO L131 PetriNetUnfolder]: For 3048/3048 co-relation queries the response was YES. [2022-12-13 13:28:59,915 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9029 conditions, 3131 events. 1646/3131 cut-off events. For 3048/3048 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 21284 event pairs, 188 based on Foata normal form. 363/3223 useless extension candidates. Maximal degree in co-relation 9019. Up to 1981 conditions per place. [2022-12-13 13:28:59,926 INFO L137 encePairwiseOnDemand]: 579/582 looper letters, 99 selfloop transitions, 3 changer transitions 0/111 dead transitions. [2022-12-13 13:28:59,926 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 111 transitions, 573 flow [2022-12-13 13:28:59,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 13:28:59,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 13:28:59,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1375 transitions. [2022-12-13 13:28:59,931 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4725085910652921 [2022-12-13 13:28:59,931 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1375 transitions. [2022-12-13 13:28:59,931 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1375 transitions. [2022-12-13 13:28:59,932 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:28:59,932 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1375 transitions. [2022-12-13 13:28:59,936 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 275.0) internal successors, (1375), 5 states have internal predecessors, (1375), 0 states have call successors, (0), 0 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 13:28:59,940 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 582.0) internal successors, (3492), 6 states have internal predecessors, (3492), 0 states have call successors, (0), 0 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 13:28:59,941 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 582.0) internal successors, (3492), 6 states have internal predecessors, (3492), 0 states have call successors, (0), 0 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 13:28:59,941 INFO L175 Difference]: Start difference. First operand has 93 places, 93 transitions, 316 flow. Second operand 5 states and 1375 transitions. [2022-12-13 13:28:59,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 111 transitions, 573 flow [2022-12-13 13:28:59,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 111 transitions, 565 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-12-13 13:28:59,948 INFO L231 Difference]: Finished difference. Result has 68 places, 56 transitions, 203 flow [2022-12-13 13:28:59,948 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=582, PETRI_DIFFERENCE_MINUEND_FLOW=197, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=203, PETRI_PLACES=68, PETRI_TRANSITIONS=56} [2022-12-13 13:28:59,949 INFO L288 CegarLoopForPetriNet]: 86 programPoint places, -18 predicate places. [2022-12-13 13:28:59,949 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 56 transitions, 203 flow [2022-12-13 13:28:59,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 258.1666666666667) internal successors, (1549), 6 states have internal predecessors, (1549), 0 states have call successors, (0), 0 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 13:28:59,950 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:28:59,950 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-12-13 13:28:59,956 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7999f3c-855d-4206-9166-12499a0bae02/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 13:29:00,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7999f3c-855d-4206-9166-12499a0bae02/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:29:00,152 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-12-13 13:29:00,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:29:00,154 INFO L85 PathProgramCache]: Analyzing trace with hash 1235228840, now seen corresponding path program 1 times [2022-12-13 13:29:00,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:29:00,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528528655] [2022-12-13 13:29:00,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:29:00,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:29:00,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 13:29:00,198 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 13:29:00,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 13:29:00,213 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 13:29:00,213 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 13:29:00,214 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (24 of 25 remaining) [2022-12-13 13:29:00,214 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 25 remaining) [2022-12-13 13:29:00,214 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 25 remaining) [2022-12-13 13:29:00,214 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 25 remaining) [2022-12-13 13:29:00,214 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 25 remaining) [2022-12-13 13:29:00,214 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 25 remaining) [2022-12-13 13:29:00,215 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 25 remaining) [2022-12-13 13:29:00,215 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 25 remaining) [2022-12-13 13:29:00,215 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 25 remaining) [2022-12-13 13:29:00,215 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 25 remaining) [2022-12-13 13:29:00,215 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 25 remaining) [2022-12-13 13:29:00,215 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 25 remaining) [2022-12-13 13:29:00,216 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 25 remaining) [2022-12-13 13:29:00,216 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 25 remaining) [2022-12-13 13:29:00,216 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 25 remaining) [2022-12-13 13:29:00,216 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 25 remaining) [2022-12-13 13:29:00,216 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 25 remaining) [2022-12-13 13:29:00,216 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 25 remaining) [2022-12-13 13:29:00,216 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 25 remaining) [2022-12-13 13:29:00,217 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 25 remaining) [2022-12-13 13:29:00,217 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 25 remaining) [2022-12-13 13:29:00,217 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 25 remaining) [2022-12-13 13:29:00,217 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 25 remaining) [2022-12-13 13:29:00,217 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 25 remaining) [2022-12-13 13:29:00,217 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 25 remaining) [2022-12-13 13:29:00,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 13:29:00,218 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:29:00,218 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-13 13:29:00,218 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-12-13 13:29:00,242 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-12-13 13:29:00,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 322 places, 370 transitions, 770 flow [2022-12-13 13:29:00,346 INFO L130 PetriNetUnfolder]: 106/722 cut-off events. [2022-12-13 13:29:00,346 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-12-13 13:29:00,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 750 conditions, 722 events. 106/722 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 3135 event pairs, 1 based on Foata normal form. 0/560 useless extension candidates. Maximal degree in co-relation 506. Up to 16 conditions per place. [2022-12-13 13:29:00,351 INFO L82 GeneralOperation]: Start removeDead. Operand has 322 places, 370 transitions, 770 flow [2022-12-13 13:29:00,357 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 321 places, 368 transitions, 766 flow [2022-12-13 13:29:00,357 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 13:29:00,358 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 321 places, 368 transitions, 766 flow [2022-12-13 13:29:00,358 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 321 places, 368 transitions, 766 flow [2022-12-13 13:29:00,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 321 places, 368 transitions, 766 flow [2022-12-13 13:29:00,456 INFO L130 PetriNetUnfolder]: 105/720 cut-off events. [2022-12-13 13:29:00,456 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-12-13 13:29:00,460 INFO L83 FinitePrefix]: Finished finitePrefix Result has 748 conditions, 720 events. 105/720 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 3155 event pairs, 1 based on Foata normal form. 0/559 useless extension candidates. Maximal degree in co-relation 504. Up to 16 conditions per place. [2022-12-13 13:29:00,486 INFO L119 LiptonReduction]: Number of co-enabled transitions 64350 [2022-12-13 13:29:06,231 INFO L134 LiptonReduction]: Checked pairs total: 145583 [2022-12-13 13:29:06,231 INFO L136 LiptonReduction]: Total number of compositions: 317 [2022-12-13 13:29:06,233 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 13:29:06,233 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;@5ec52663, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 13:29:06,233 INFO L358 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2022-12-13 13:29:06,234 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2022-12-13 13:29:06,234 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 13:29:06,234 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:29:06,234 INFO L209 CegarLoopForPetriNet]: trace histogram [1] [2022-12-13 13:29:06,234 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2022-12-13 13:29:06,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:29:06,234 INFO L85 PathProgramCache]: Analyzing trace with hash 2307, now seen corresponding path program 1 times [2022-12-13 13:29:06,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:29:06,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785865402] [2022-12-13 13:29:06,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:29:06,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:29:06,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:29:06,239 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 13:29:06,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:29:06,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785865402] [2022-12-13 13:29:06,239 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785865402] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:29:06,239 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:29:06,239 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-12-13 13:29:06,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230625248] [2022-12-13 13:29:06,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:29:06,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 13:29:06,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:29:06,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 13:29:06,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 13:29:06,241 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 314 out of 687 [2022-12-13 13:29:06,242 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 150 transitions, 330 flow. Second operand has 2 states, 2 states have (on average 314.5) internal successors, (629), 2 states have internal predecessors, (629), 0 states have call successors, (0), 0 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 13:29:06,242 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:29:06,242 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 314 of 687 [2022-12-13 13:29:06,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:29:49,571 INFO L130 PetriNetUnfolder]: 574191/784747 cut-off events. [2022-12-13 13:29:49,571 INFO L131 PetriNetUnfolder]: For 5000/5000 co-relation queries the response was YES. [2022-12-13 13:29:50,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1541881 conditions, 784747 events. 574191/784747 cut-off events. For 5000/5000 co-relation queries the response was YES. Maximal size of possible extension queue 20408. Compared 6365625 event pairs, 546591 based on Foata normal form. 122718/675767 useless extension candidates. Maximal degree in co-relation 230072. Up to 754192 conditions per place. [2022-12-13 13:29:53,230 INFO L137 encePairwiseOnDemand]: 642/687 looper letters, 90 selfloop transitions, 0 changer transitions 0/105 dead transitions. [2022-12-13 13:29:53,230 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 105 transitions, 420 flow [2022-12-13 13:29:53,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 13:29:53,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-12-13 13:29:53,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 763 transitions. [2022-12-13 13:29:53,233 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5553129548762736 [2022-12-13 13:29:53,233 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 763 transitions. [2022-12-13 13:29:53,233 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 763 transitions. [2022-12-13 13:29:53,233 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:29:53,233 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 763 transitions. [2022-12-13 13:29:53,235 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 381.5) internal successors, (763), 2 states have internal predecessors, (763), 0 states have call successors, (0), 0 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 13:29:53,236 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 687.0) internal successors, (2061), 3 states have internal predecessors, (2061), 0 states have call successors, (0), 0 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 13:29:53,237 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 687.0) internal successors, (2061), 3 states have internal predecessors, (2061), 0 states have call successors, (0), 0 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 13:29:53,237 INFO L175 Difference]: Start difference. First operand has 109 places, 150 transitions, 330 flow. Second operand 2 states and 763 transitions. [2022-12-13 13:29:53,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 105 transitions, 420 flow [2022-12-13 13:29:53,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 105 transitions, 420 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 13:29:53,246 INFO L231 Difference]: Finished difference. Result has 106 places, 105 transitions, 240 flow [2022-12-13 13:29:53,246 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=687, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=240, PETRI_PLACES=106, PETRI_TRANSITIONS=105} [2022-12-13 13:29:53,247 INFO L288 CegarLoopForPetriNet]: 109 programPoint places, -3 predicate places. [2022-12-13 13:29:53,247 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 105 transitions, 240 flow [2022-12-13 13:29:53,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 314.5) internal successors, (629), 2 states have internal predecessors, (629), 0 states have call successors, (0), 0 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 13:29:53,248 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:29:53,248 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 13:29:53,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-13 13:29:53,248 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2022-12-13 13:29:53,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:29:53,248 INFO L85 PathProgramCache]: Analyzing trace with hash -2098449269, now seen corresponding path program 1 times [2022-12-13 13:29:53,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:29:53,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194796462] [2022-12-13 13:29:53,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:29:53,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:29:53,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:29:53,275 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 13:29:53,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:29:53,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194796462] [2022-12-13 13:29:53,275 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194796462] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:29:53,275 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:29:53,275 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 13:29:53,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673545000] [2022-12-13 13:29:53,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:29:53,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 13:29:53,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:29:53,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 13:29:53,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 13:29:53,285 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 309 out of 687 [2022-12-13 13:29:53,286 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 105 transitions, 240 flow. Second operand has 3 states, 3 states have (on average 310.3333333333333) internal successors, (931), 3 states have internal predecessors, (931), 0 states have call successors, (0), 0 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 13:29:53,287 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:29:53,287 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 309 of 687 [2022-12-13 13:29:53,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:30:34,573 INFO L130 PetriNetUnfolder]: 536632/745492 cut-off events. [2022-12-13 13:30:34,573 INFO L131 PetriNetUnfolder]: For 3530/3530 co-relation queries the response was YES. [2022-12-13 13:30:35,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1469627 conditions, 745492 events. 536632/745492 cut-off events. For 3530/3530 co-relation queries the response was YES. Maximal size of possible extension queue 19783. Compared 6418033 event pairs, 80871 based on Foata normal form. 0/528868 useless extension candidates. Maximal degree in co-relation 1469621. Up to 646093 conditions per place. [2022-12-13 13:30:38,004 INFO L137 encePairwiseOnDemand]: 682/687 looper letters, 141 selfloop transitions, 3 changer transitions 0/159 dead transitions. [2022-12-13 13:30:38,004 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 159 transitions, 636 flow [2022-12-13 13:30:38,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 13:30:38,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 13:30:38,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1073 transitions. [2022-12-13 13:30:38,007 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5206210577389617 [2022-12-13 13:30:38,008 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1073 transitions. [2022-12-13 13:30:38,008 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1073 transitions. [2022-12-13 13:30:38,008 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:30:38,008 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1073 transitions. [2022-12-13 13:30:38,010 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 357.6666666666667) internal successors, (1073), 3 states have internal predecessors, (1073), 0 states have call successors, (0), 0 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 13:30:38,013 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 687.0) internal successors, (2748), 4 states have internal predecessors, (2748), 0 states have call successors, (0), 0 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 13:30:38,014 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 687.0) internal successors, (2748), 4 states have internal predecessors, (2748), 0 states have call successors, (0), 0 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 13:30:38,014 INFO L175 Difference]: Start difference. First operand has 106 places, 105 transitions, 240 flow. Second operand 3 states and 1073 transitions. [2022-12-13 13:30:38,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 159 transitions, 636 flow [2022-12-13 13:30:38,016 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 159 transitions, 636 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 13:30:38,018 INFO L231 Difference]: Finished difference. Result has 109 places, 105 transitions, 256 flow [2022-12-13 13:30:38,018 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=687, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=256, PETRI_PLACES=109, PETRI_TRANSITIONS=105} [2022-12-13 13:30:38,019 INFO L288 CegarLoopForPetriNet]: 109 programPoint places, 0 predicate places. [2022-12-13 13:30:38,019 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 105 transitions, 256 flow [2022-12-13 13:30:38,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 310.3333333333333) internal successors, (931), 3 states have internal predecessors, (931), 0 states have call successors, (0), 0 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 13:30:38,020 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:30:38,020 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 13:30:38,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-13 13:30:38,020 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2022-12-13 13:30:38,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:30:38,020 INFO L85 PathProgramCache]: Analyzing trace with hash -2098449369, now seen corresponding path program 1 times [2022-12-13 13:30:38,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:30:38,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169753487] [2022-12-13 13:30:38,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:30:38,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:30:38,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:30:38,063 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 13:30:38,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:30:38,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169753487] [2022-12-13 13:30:38,064 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169753487] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:30:38,064 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:30:38,064 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 13:30:38,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778114072] [2022-12-13 13:30:38,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:30:38,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 13:30:38,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:30:38,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 13:30:38,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 13:30:38,075 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 310 out of 687 [2022-12-13 13:30:38,077 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 105 transitions, 256 flow. Second operand has 3 states, 3 states have (on average 311.3333333333333) internal successors, (934), 3 states have internal predecessors, (934), 0 states have call successors, (0), 0 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 13:30:38,077 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:30:38,077 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 310 of 687 [2022-12-13 13:30:38,077 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:31:20,424 INFO L130 PetriNetUnfolder]: 550482/755711 cut-off events. [2022-12-13 13:31:20,425 INFO L131 PetriNetUnfolder]: For 54608/54608 co-relation queries the response was YES. [2022-12-13 13:31:21,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1521542 conditions, 755711 events. 550482/755711 cut-off events. For 54608/54608 co-relation queries the response was YES. Maximal size of possible extension queue 19762. Compared 6156008 event pairs, 345948 based on Foata normal form. 18/551089 useless extension candidates. Maximal degree in co-relation 1521534. Up to 726713 conditions per place. [2022-12-13 13:31:24,355 INFO L137 encePairwiseOnDemand]: 684/687 looper letters, 107 selfloop transitions, 2 changer transitions 0/124 dead transitions. [2022-12-13 13:31:24,355 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 124 transitions, 516 flow [2022-12-13 13:31:24,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 13:31:24,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 13:31:24,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1040 transitions. [2022-12-13 13:31:24,358 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5046094129063562 [2022-12-13 13:31:24,359 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1040 transitions. [2022-12-13 13:31:24,359 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1040 transitions. [2022-12-13 13:31:24,359 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:31:24,359 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1040 transitions. [2022-12-13 13:31:24,361 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 346.6666666666667) internal successors, (1040), 3 states have internal predecessors, (1040), 0 states have call successors, (0), 0 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 13:31:24,363 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 687.0) internal successors, (2748), 4 states have internal predecessors, (2748), 0 states have call successors, (0), 0 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 13:31:24,364 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 687.0) internal successors, (2748), 4 states have internal predecessors, (2748), 0 states have call successors, (0), 0 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 13:31:24,364 INFO L175 Difference]: Start difference. First operand has 109 places, 105 transitions, 256 flow. Second operand 3 states and 1040 transitions. [2022-12-13 13:31:24,364 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 124 transitions, 516 flow [2022-12-13 13:31:24,415 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 124 transitions, 508 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 13:31:24,417 INFO L231 Difference]: Finished difference. Result has 110 places, 106 transitions, 264 flow [2022-12-13 13:31:24,417 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=687, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=264, PETRI_PLACES=110, PETRI_TRANSITIONS=106} [2022-12-13 13:31:24,417 INFO L288 CegarLoopForPetriNet]: 109 programPoint places, 1 predicate places. [2022-12-13 13:31:24,417 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 106 transitions, 264 flow [2022-12-13 13:31:24,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 311.3333333333333) internal successors, (934), 3 states have internal predecessors, (934), 0 states have call successors, (0), 0 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 13:31:24,418 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:31:24,418 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:31:24,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-13 13:31:24,418 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2022-12-13 13:31:24,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:31:24,418 INFO L85 PathProgramCache]: Analyzing trace with hash -1280388925, now seen corresponding path program 1 times [2022-12-13 13:31:24,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:31:24,419 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611604790] [2022-12-13 13:31:24,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:31:24,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:31:24,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:31:24,483 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 13:31:24,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:31:24,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611604790] [2022-12-13 13:31:24,483 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611604790] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:31:24,483 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:31:24,483 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 13:31:24,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376704059] [2022-12-13 13:31:24,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:31:24,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 13:31:24,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:31:24,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 13:31:24,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 13:31:24,596 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 300 out of 687 [2022-12-13 13:31:24,598 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 106 transitions, 264 flow. Second operand has 4 states, 4 states have (on average 301.75) internal successors, (1207), 4 states have internal predecessors, (1207), 0 states have call successors, (0), 0 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 13:31:24,598 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:31:24,598 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 300 of 687 [2022-12-13 13:31:24,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:32:17,583 INFO L130 PetriNetUnfolder]: 650327/905905 cut-off events. [2022-12-13 13:32:17,583 INFO L131 PetriNetUnfolder]: For 48447/48447 co-relation queries the response was YES. [2022-12-13 13:32:19,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1830923 conditions, 905905 events. 650327/905905 cut-off events. For 48447/48447 co-relation queries the response was YES. Maximal size of possible extension queue 26296. Compared 7801696 event pairs, 200820 based on Foata normal form. 0/686057 useless extension candidates. Maximal degree in co-relation 1830914. Up to 666766 conditions per place. [2022-12-13 13:32:22,487 INFO L137 encePairwiseOnDemand]: 662/687 looper letters, 203 selfloop transitions, 17 changer transitions 0/235 dead transitions. [2022-12-13 13:32:22,487 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 235 transitions, 1024 flow [2022-12-13 13:32:22,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 13:32:22,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 13:32:22,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1435 transitions. [2022-12-13 13:32:22,494 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.522197962154294 [2022-12-13 13:32:22,494 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1435 transitions. [2022-12-13 13:32:22,495 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1435 transitions. [2022-12-13 13:32:22,495 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:32:22,495 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1435 transitions. [2022-12-13 13:32:22,497 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 358.75) internal successors, (1435), 4 states have internal predecessors, (1435), 0 states have call successors, (0), 0 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 13:32:22,500 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 687.0) internal successors, (3435), 5 states have internal predecessors, (3435), 0 states have call successors, (0), 0 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 13:32:22,501 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 687.0) internal successors, (3435), 5 states have internal predecessors, (3435), 0 states have call successors, (0), 0 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 13:32:22,501 INFO L175 Difference]: Start difference. First operand has 110 places, 106 transitions, 264 flow. Second operand 4 states and 1435 transitions. [2022-12-13 13:32:22,501 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 235 transitions, 1024 flow [2022-12-13 13:32:22,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 235 transitions, 1021 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 13:32:22,554 INFO L231 Difference]: Finished difference. Result has 115 places, 122 transitions, 424 flow [2022-12-13 13:32:22,554 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=687, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=424, PETRI_PLACES=115, PETRI_TRANSITIONS=122} [2022-12-13 13:32:22,554 INFO L288 CegarLoopForPetriNet]: 109 programPoint places, 6 predicate places. [2022-12-13 13:32:22,554 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 122 transitions, 424 flow [2022-12-13 13:32:22,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 301.75) internal successors, (1207), 4 states have internal predecessors, (1207), 0 states have call successors, (0), 0 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 13:32:22,555 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:32:22,555 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-12-13 13:32:22,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-13 13:32:22,555 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2022-12-13 13:32:22,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:32:22,556 INFO L85 PathProgramCache]: Analyzing trace with hash 359769587, now seen corresponding path program 1 times [2022-12-13 13:32:22,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:32:22,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272666307] [2022-12-13 13:32:22,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:32:22,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:32:22,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:32:22,579 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:32:22,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:32:22,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272666307] [2022-12-13 13:32:22,580 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272666307] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:32:22,580 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:32:22,580 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 13:32:22,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169738180] [2022-12-13 13:32:22,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:32:22,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 13:32:22,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:32:22,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 13:32:22,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 13:32:22,589 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 310 out of 687 [2022-12-13 13:32:22,590 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 122 transitions, 424 flow. Second operand has 3 states, 3 states have (on average 312.3333333333333) internal successors, (937), 3 states have internal predecessors, (937), 0 states have call successors, (0), 0 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 13:32:22,590 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:32:22,590 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 310 of 687 [2022-12-13 13:32:22,590 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:33:19,218 INFO L130 PetriNetUnfolder]: 628318/876622 cut-off events. [2022-12-13 13:33:19,218 INFO L131 PetriNetUnfolder]: For 257667/257703 co-relation queries the response was YES. [2022-12-13 13:33:21,093 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2080325 conditions, 876622 events. 628318/876622 cut-off events. For 257667/257703 co-relation queries the response was YES. Maximal size of possible extension queue 25428. Compared 7519901 event pairs, 562086 based on Foata normal form. 8318/741512 useless extension candidates. Maximal degree in co-relation 2080314. Up to 848750 conditions per place. [2022-12-13 13:33:23,933 INFO L137 encePairwiseOnDemand]: 685/687 looper letters, 105 selfloop transitions, 1 changer transitions 0/121 dead transitions. [2022-12-13 13:33:23,933 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 121 transitions, 632 flow [2022-12-13 13:33:23,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 13:33:23,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 13:33:23,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1019 transitions. [2022-12-13 13:33:23,936 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49442018437651625 [2022-12-13 13:33:23,936 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1019 transitions. [2022-12-13 13:33:23,936 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1019 transitions. [2022-12-13 13:33:23,937 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:33:23,937 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1019 transitions. [2022-12-13 13:33:23,938 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 339.6666666666667) internal successors, (1019), 3 states have internal predecessors, (1019), 0 states have call successors, (0), 0 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 13:33:23,940 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 687.0) internal successors, (2748), 4 states have internal predecessors, (2748), 0 states have call successors, (0), 0 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 13:33:23,940 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 687.0) internal successors, (2748), 4 states have internal predecessors, (2748), 0 states have call successors, (0), 0 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 13:33:23,940 INFO L175 Difference]: Start difference. First operand has 115 places, 122 transitions, 424 flow. Second operand 3 states and 1019 transitions. [2022-12-13 13:33:23,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 121 transitions, 632 flow [2022-12-13 13:33:24,137 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 121 transitions, 632 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 13:33:24,138 INFO L231 Difference]: Finished difference. Result has 116 places, 121 transitions, 422 flow [2022-12-13 13:33:24,138 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=687, PETRI_DIFFERENCE_MINUEND_FLOW=420, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=422, PETRI_PLACES=116, PETRI_TRANSITIONS=121} [2022-12-13 13:33:24,139 INFO L288 CegarLoopForPetriNet]: 109 programPoint places, 7 predicate places. [2022-12-13 13:33:24,139 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 121 transitions, 422 flow [2022-12-13 13:33:24,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 312.3333333333333) internal successors, (937), 3 states have internal predecessors, (937), 0 states have call successors, (0), 0 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 13:33:24,139 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:33:24,139 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:33:24,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-13 13:33:24,139 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2022-12-13 13:33:24,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:33:24,140 INFO L85 PathProgramCache]: Analyzing trace with hash -1722284055, now seen corresponding path program 1 times [2022-12-13 13:33:24,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:33:24,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521083249] [2022-12-13 13:33:24,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:33:24,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:33:24,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:33:24,177 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 13:33:24,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:33:24,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521083249] [2022-12-13 13:33:24,178 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521083249] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:33:24,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [225310795] [2022-12-13 13:33:24,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:33:24,178 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:33:24,178 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7999f3c-855d-4206-9166-12499a0bae02/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:33:24,179 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7999f3c-855d-4206-9166-12499a0bae02/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:33:24,180 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7999f3c-855d-4206-9166-12499a0bae02/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 13:33:24,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:33:24,243 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 13:33:24,245 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:33:24,274 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 13:33:24,275 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 13:33:24,286 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 13:33:24,286 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [225310795] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 13:33:24,286 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 13:33:24,286 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2022-12-13 13:33:24,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683749803] [2022-12-13 13:33:24,287 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 13:33:24,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 13:33:24,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:33:24,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 13:33:24,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-12-13 13:33:24,300 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 309 out of 687 [2022-12-13 13:33:24,301 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 121 transitions, 422 flow. Second operand has 6 states, 6 states have (on average 311.1666666666667) internal successors, (1867), 6 states have internal predecessors, (1867), 0 states have call successors, (0), 0 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 13:33:24,301 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:33:24,301 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 309 of 687 [2022-12-13 13:33:24,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:33:30,261 INFO L130 PetriNetUnfolder]: 60117/92652 cut-off events. [2022-12-13 13:33:30,261 INFO L131 PetriNetUnfolder]: For 65163/65163 co-relation queries the response was YES. [2022-12-13 13:33:30,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 262672 conditions, 92652 events. 60117/92652 cut-off events. For 65163/65163 co-relation queries the response was YES. Maximal size of possible extension queue 3948. Compared 785456 event pairs, 1587 based on Foata normal form. 8363/91832 useless extension candidates. Maximal degree in co-relation 262660. Up to 59851 conditions per place. [2022-12-13 13:33:30,705 INFO L137 encePairwiseOnDemand]: 684/687 looper letters, 194 selfloop transitions, 4 changer transitions 0/209 dead transitions. [2022-12-13 13:33:30,705 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 209 transitions, 1135 flow [2022-12-13 13:33:30,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 13:33:30,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 13:33:30,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2027 transitions. [2022-12-13 13:33:30,709 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49175157690441534 [2022-12-13 13:33:30,709 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2027 transitions. [2022-12-13 13:33:30,709 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2027 transitions. [2022-12-13 13:33:30,710 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:33:30,710 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2027 transitions. [2022-12-13 13:33:30,712 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 337.8333333333333) internal successors, (2027), 6 states have internal predecessors, (2027), 0 states have call successors, (0), 0 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 13:33:30,715 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 687.0) internal successors, (4809), 7 states have internal predecessors, (4809), 0 states have call successors, (0), 0 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 13:33:30,715 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 687.0) internal successors, (4809), 7 states have internal predecessors, (4809), 0 states have call successors, (0), 0 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 13:33:30,715 INFO L175 Difference]: Start difference. First operand has 116 places, 121 transitions, 422 flow. Second operand 6 states and 2027 transitions. [2022-12-13 13:33:30,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 209 transitions, 1135 flow [2022-12-13 13:33:30,773 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 209 transitions, 1128 flow, removed 3 selfloop flow, removed 1 redundant places. [2022-12-13 13:33:30,775 INFO L231 Difference]: Finished difference. Result has 92 places, 86 transitions, 324 flow [2022-12-13 13:33:30,776 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=687, PETRI_DIFFERENCE_MINUEND_FLOW=310, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=324, PETRI_PLACES=92, PETRI_TRANSITIONS=86} [2022-12-13 13:33:30,776 INFO L288 CegarLoopForPetriNet]: 109 programPoint places, -17 predicate places. [2022-12-13 13:33:30,776 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 86 transitions, 324 flow [2022-12-13 13:33:30,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 311.1666666666667) internal successors, (1867), 6 states have internal predecessors, (1867), 0 states have call successors, (0), 0 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 13:33:30,777 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:33:30,777 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:33:30,782 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7999f3c-855d-4206-9166-12499a0bae02/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-12-13 13:33:30,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7999f3c-855d-4206-9166-12499a0bae02/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-12-13 13:33:30,978 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2022-12-13 13:33:30,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:33:30,980 INFO L85 PathProgramCache]: Analyzing trace with hash -1438764806, now seen corresponding path program 1 times [2022-12-13 13:33:30,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:33:30,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478323385] [2022-12-13 13:33:30,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:33:30,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:33:31,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:33:31,210 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 13:33:31,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:33:31,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478323385] [2022-12-13 13:33:31,210 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478323385] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:33:31,210 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:33:31,210 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 13:33:31,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76836338] [2022-12-13 13:33:31,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:33:31,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 13:33:31,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:33:31,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 13:33:31,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 13:33:31,400 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 296 out of 687 [2022-12-13 13:33:31,402 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 86 transitions, 324 flow. Second operand has 6 states, 6 states have (on average 297.8333333333333) internal successors, (1787), 6 states have internal predecessors, (1787), 0 states have call successors, (0), 0 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 13:33:31,402 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:33:31,402 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 296 of 687 [2022-12-13 13:33:31,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:33:39,339 INFO L130 PetriNetUnfolder]: 79695/117624 cut-off events. [2022-12-13 13:33:39,340 INFO L131 PetriNetUnfolder]: For 118909/119121 co-relation queries the response was YES. [2022-12-13 13:33:39,569 INFO L83 FinitePrefix]: Finished finitePrefix Result has 328248 conditions, 117624 events. 79695/117624 cut-off events. For 118909/119121 co-relation queries the response was YES. Maximal size of possible extension queue 4888. Compared 960197 event pairs, 13645 based on Foata normal form. 732/108112 useless extension candidates. Maximal degree in co-relation 328236. Up to 60439 conditions per place. [2022-12-13 13:33:39,964 INFO L137 encePairwiseOnDemand]: 663/687 looper letters, 284 selfloop transitions, 51 changer transitions 0/346 dead transitions. [2022-12-13 13:33:39,964 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 346 transitions, 1842 flow [2022-12-13 13:33:39,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 13:33:39,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-13 13:33:39,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2999 transitions. [2022-12-13 13:33:39,969 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.48503962477761603 [2022-12-13 13:33:39,969 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2999 transitions. [2022-12-13 13:33:39,969 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2999 transitions. [2022-12-13 13:33:39,971 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:33:39,972 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2999 transitions. [2022-12-13 13:33:39,978 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 333.22222222222223) internal successors, (2999), 9 states have internal predecessors, (2999), 0 states have call successors, (0), 0 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 13:33:39,982 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 687.0) internal successors, (6870), 10 states have internal predecessors, (6870), 0 states have call successors, (0), 0 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 13:33:39,982 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 687.0) internal successors, (6870), 10 states have internal predecessors, (6870), 0 states have call successors, (0), 0 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 13:33:39,983 INFO L175 Difference]: Start difference. First operand has 92 places, 86 transitions, 324 flow. Second operand 9 states and 2999 transitions. [2022-12-13 13:33:39,983 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 346 transitions, 1842 flow [2022-12-13 13:33:40,029 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 346 transitions, 1797 flow, removed 16 selfloop flow, removed 3 redundant places. [2022-12-13 13:33:40,031 INFO L231 Difference]: Finished difference. Result has 104 places, 124 transitions, 769 flow [2022-12-13 13:33:40,031 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=687, PETRI_DIFFERENCE_MINUEND_FLOW=315, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=769, PETRI_PLACES=104, PETRI_TRANSITIONS=124} [2022-12-13 13:33:40,031 INFO L288 CegarLoopForPetriNet]: 109 programPoint places, -5 predicate places. [2022-12-13 13:33:40,031 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 124 transitions, 769 flow [2022-12-13 13:33:40,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 297.8333333333333) internal successors, (1787), 6 states have internal predecessors, (1787), 0 states have call successors, (0), 0 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 13:33:40,032 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:33:40,032 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:33:40,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-12-13 13:33:40,032 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2022-12-13 13:33:40,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:33:40,032 INFO L85 PathProgramCache]: Analyzing trace with hash -1438764692, now seen corresponding path program 1 times [2022-12-13 13:33:40,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:33:40,033 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493509061] [2022-12-13 13:33:40,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:33:40,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:33:40,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:33:40,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:33:40,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:33:40,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493509061] [2022-12-13 13:33:40,080 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493509061] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:33:40,080 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:33:40,081 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 13:33:40,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207539950] [2022-12-13 13:33:40,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:33:40,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 13:33:40,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:33:40,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 13:33:40,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 13:33:40,143 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 303 out of 687 [2022-12-13 13:33:40,144 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 124 transitions, 769 flow. Second operand has 3 states, 3 states have (on average 306.6666666666667) internal successors, (920), 3 states have internal predecessors, (920), 0 states have call successors, (0), 0 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 13:33:40,144 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:33:40,144 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 303 of 687 [2022-12-13 13:33:40,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:33:52,645 INFO L130 PetriNetUnfolder]: 105938/161019 cut-off events. [2022-12-13 13:33:52,646 INFO L131 PetriNetUnfolder]: For 332940/334002 co-relation queries the response was YES. [2022-12-13 13:33:53,101 INFO L83 FinitePrefix]: Finished finitePrefix Result has 535778 conditions, 161019 events. 105938/161019 cut-off events. For 332940/334002 co-relation queries the response was YES. Maximal size of possible extension queue 6639. Compared 1432757 event pairs, 37008 based on Foata normal form. 4586/159626 useless extension candidates. Maximal degree in co-relation 535761. Up to 83481 conditions per place. [2022-12-13 13:33:53,682 INFO L137 encePairwiseOnDemand]: 667/687 looper letters, 154 selfloop transitions, 46 changer transitions 0/211 dead transitions. [2022-12-13 13:33:53,682 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 211 transitions, 1683 flow [2022-12-13 13:33:53,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 13:33:53,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 13:33:53,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1027 transitions. [2022-12-13 13:33:53,685 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4983017952450267 [2022-12-13 13:33:53,685 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1027 transitions. [2022-12-13 13:33:53,685 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1027 transitions. [2022-12-13 13:33:53,686 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:33:53,686 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1027 transitions. [2022-12-13 13:33:53,687 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 342.3333333333333) internal successors, (1027), 3 states have internal predecessors, (1027), 0 states have call successors, (0), 0 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 13:33:53,689 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 687.0) internal successors, (2748), 4 states have internal predecessors, (2748), 0 states have call successors, (0), 0 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 13:33:53,689 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 687.0) internal successors, (2748), 4 states have internal predecessors, (2748), 0 states have call successors, (0), 0 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 13:33:53,689 INFO L175 Difference]: Start difference. First operand has 104 places, 124 transitions, 769 flow. Second operand 3 states and 1027 transitions. [2022-12-13 13:33:53,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 211 transitions, 1683 flow [2022-12-13 13:33:55,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 211 transitions, 1639 flow, removed 6 selfloop flow, removed 2 redundant places. [2022-12-13 13:33:55,150 INFO L231 Difference]: Finished difference. Result has 106 places, 162 transitions, 1312 flow [2022-12-13 13:33:55,150 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=687, PETRI_DIFFERENCE_MINUEND_FLOW=740, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1312, PETRI_PLACES=106, PETRI_TRANSITIONS=162} [2022-12-13 13:33:55,150 INFO L288 CegarLoopForPetriNet]: 109 programPoint places, -3 predicate places. [2022-12-13 13:33:55,150 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 162 transitions, 1312 flow [2022-12-13 13:33:55,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 306.6666666666667) internal successors, (920), 3 states have internal predecessors, (920), 0 states have call successors, (0), 0 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 13:33:55,151 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:33:55,151 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:33:55,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-12-13 13:33:55,151 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2022-12-13 13:33:55,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:33:55,151 INFO L85 PathProgramCache]: Analyzing trace with hash 1062144930, now seen corresponding path program 1 times [2022-12-13 13:33:55,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:33:55,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595392466] [2022-12-13 13:33:55,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:33:55,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:33:55,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:33:55,273 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 13:33:55,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:33:55,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595392466] [2022-12-13 13:33:55,274 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595392466] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:33:55,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1009638478] [2022-12-13 13:33:55,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:33:55,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:33:55,274 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7999f3c-855d-4206-9166-12499a0bae02/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:33:55,275 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7999f3c-855d-4206-9166-12499a0bae02/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:33:55,276 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7999f3c-855d-4206-9166-12499a0bae02/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 13:33:55,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:33:55,354 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 13 conjunts are in the unsatisfiable core [2022-12-13 13:33:55,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:33:55,438 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-13 13:33:55,438 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 127 treesize of output 129 [2022-12-13 13:33:55,447 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 111 treesize of output 111 [2022-12-13 13:33:55,637 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-13 13:33:55,663 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-13 13:33:55,673 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 13:33:55,673 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 13:33:55,673 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1009638478] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:33:55,673 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 13:33:55,673 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 7 [2022-12-13 13:33:55,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530926506] [2022-12-13 13:33:55,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:33:55,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 13:33:55,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:33:55,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 13:33:55,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-12-13 13:33:55,766 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 300 out of 687 [2022-12-13 13:33:55,767 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 162 transitions, 1312 flow. Second operand has 5 states, 5 states have (on average 302.6) internal successors, (1513), 5 states have internal predecessors, (1513), 0 states have call successors, (0), 0 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 13:33:55,767 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:33:55,767 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 300 of 687 [2022-12-13 13:33:55,767 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:34:09,324 INFO L130 PetriNetUnfolder]: 104056/159993 cut-off events. [2022-12-13 13:34:09,324 INFO L131 PetriNetUnfolder]: For 489168/489294 co-relation queries the response was YES. [2022-12-13 13:34:09,816 INFO L83 FinitePrefix]: Finished finitePrefix Result has 589341 conditions, 159993 events. 104056/159993 cut-off events. For 489168/489294 co-relation queries the response was YES. Maximal size of possible extension queue 6395. Compared 1433669 event pairs, 54505 based on Foata normal form. 1736/155845 useless extension candidates. Maximal degree in co-relation 589322. Up to 117459 conditions per place. [2022-12-13 13:34:10,530 INFO L137 encePairwiseOnDemand]: 671/687 looper letters, 171 selfloop transitions, 39 changer transitions 0/221 dead transitions. [2022-12-13 13:34:10,530 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 221 transitions, 2140 flow [2022-12-13 13:34:10,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 13:34:10,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 13:34:10,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1305 transitions. [2022-12-13 13:34:10,533 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47489082969432317 [2022-12-13 13:34:10,533 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1305 transitions. [2022-12-13 13:34:10,533 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1305 transitions. [2022-12-13 13:34:10,534 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:34:10,534 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1305 transitions. [2022-12-13 13:34:10,535 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 326.25) internal successors, (1305), 4 states have internal predecessors, (1305), 0 states have call successors, (0), 0 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 13:34:10,537 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 687.0) internal successors, (3435), 5 states have internal predecessors, (3435), 0 states have call successors, (0), 0 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 13:34:10,538 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 687.0) internal successors, (3435), 5 states have internal predecessors, (3435), 0 states have call successors, (0), 0 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 13:34:10,538 INFO L175 Difference]: Start difference. First operand has 106 places, 162 transitions, 1312 flow. Second operand 4 states and 1305 transitions. [2022-12-13 13:34:10,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 221 transitions, 2140 flow [2022-12-13 13:34:12,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 221 transitions, 2012 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 13:34:12,458 INFO L231 Difference]: Finished difference. Result has 109 places, 183 transitions, 1639 flow [2022-12-13 13:34:12,458 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=687, PETRI_DIFFERENCE_MINUEND_FLOW=1220, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1639, PETRI_PLACES=109, PETRI_TRANSITIONS=183} [2022-12-13 13:34:12,458 INFO L288 CegarLoopForPetriNet]: 109 programPoint places, 0 predicate places. [2022-12-13 13:34:12,458 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 183 transitions, 1639 flow [2022-12-13 13:34:12,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 302.6) internal successors, (1513), 5 states have internal predecessors, (1513), 0 states have call successors, (0), 0 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 13:34:12,459 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:34:12,459 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:34:12,464 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7999f3c-855d-4206-9166-12499a0bae02/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 13:34:12,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7999f3c-855d-4206-9166-12499a0bae02/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:34:12,660 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2022-12-13 13:34:12,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:34:12,661 INFO L85 PathProgramCache]: Analyzing trace with hash 1062144816, now seen corresponding path program 1 times [2022-12-13 13:34:12,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:34:12,662 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285404663] [2022-12-13 13:34:12,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:34:12,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:34:12,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:34:12,788 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 13:34:12,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:34:12,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285404663] [2022-12-13 13:34:12,789 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285404663] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:34:12,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1954280575] [2022-12-13 13:34:12,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:34:12,789 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:34:12,789 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7999f3c-855d-4206-9166-12499a0bae02/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:34:12,790 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7999f3c-855d-4206-9166-12499a0bae02/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:34:12,791 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7999f3c-855d-4206-9166-12499a0bae02/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 13:34:12,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:34:12,859 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 16 conjunts are in the unsatisfiable core [2022-12-13 13:34:12,861 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:34:12,920 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-13 13:34:12,920 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 127 treesize of output 129 [2022-12-13 13:34:12,928 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 111 treesize of output 111 [2022-12-13 13:34:12,953 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-13 13:34:13,006 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2022-12-13 13:34:13,027 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-13 13:34:13,035 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 13:34:13,035 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 13:34:13,035 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1954280575] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:34:13,035 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 13:34:13,035 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 8 [2022-12-13 13:34:13,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900733180] [2022-12-13 13:34:13,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:34:13,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 13:34:13,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:34:13,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 13:34:13,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-12-13 13:34:13,185 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 297 out of 687 [2022-12-13 13:34:13,186 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 183 transitions, 1639 flow. Second operand has 6 states, 6 states have (on average 299.1666666666667) internal successors, (1795), 6 states have internal predecessors, (1795), 0 states have call successors, (0), 0 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 13:34:13,186 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:34:13,186 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 297 of 687 [2022-12-13 13:34:13,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:34:26,615 INFO L130 PetriNetUnfolder]: 99940/154130 cut-off events. [2022-12-13 13:34:26,615 INFO L131 PetriNetUnfolder]: For 462727/462757 co-relation queries the response was YES. [2022-12-13 13:34:27,110 INFO L83 FinitePrefix]: Finished finitePrefix Result has 565678 conditions, 154130 events. 99940/154130 cut-off events. For 462727/462757 co-relation queries the response was YES. Maximal size of possible extension queue 6163. Compared 1382619 event pairs, 31271 based on Foata normal form. 779/149264 useless extension candidates. Maximal degree in co-relation 565657. Up to 123703 conditions per place. [2022-12-13 13:34:27,688 INFO L137 encePairwiseOnDemand]: 676/687 looper letters, 252 selfloop transitions, 28 changer transitions 0/291 dead transitions. [2022-12-13 13:34:27,688 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 291 transitions, 2781 flow [2022-12-13 13:34:27,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 13:34:27,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 13:34:27,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1632 transitions. [2022-12-13 13:34:27,691 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47510917030567684 [2022-12-13 13:34:27,691 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1632 transitions. [2022-12-13 13:34:27,691 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1632 transitions. [2022-12-13 13:34:27,692 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:34:27,692 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1632 transitions. [2022-12-13 13:34:27,694 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 326.4) internal successors, (1632), 5 states have internal predecessors, (1632), 0 states have call successors, (0), 0 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 13:34:27,696 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 687.0) internal successors, (4122), 6 states have internal predecessors, (4122), 0 states have call successors, (0), 0 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 13:34:27,697 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 687.0) internal successors, (4122), 6 states have internal predecessors, (4122), 0 states have call successors, (0), 0 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 13:34:27,697 INFO L175 Difference]: Start difference. First operand has 109 places, 183 transitions, 1639 flow. Second operand 5 states and 1632 transitions. [2022-12-13 13:34:27,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 291 transitions, 2781 flow [2022-12-13 13:34:36,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 291 transitions, 2772 flow, removed 4 selfloop flow, removed 1 redundant places. [2022-12-13 13:34:36,101 INFO L231 Difference]: Finished difference. Result has 113 places, 195 transitions, 1886 flow [2022-12-13 13:34:36,102 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=687, PETRI_DIFFERENCE_MINUEND_FLOW=1606, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1886, PETRI_PLACES=113, PETRI_TRANSITIONS=195} [2022-12-13 13:34:36,102 INFO L288 CegarLoopForPetriNet]: 109 programPoint places, 4 predicate places. [2022-12-13 13:34:36,102 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 195 transitions, 1886 flow [2022-12-13 13:34:36,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 299.1666666666667) internal successors, (1795), 6 states have internal predecessors, (1795), 0 states have call successors, (0), 0 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 13:34:36,102 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:34:36,102 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2022-12-13 13:34:36,106 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7999f3c-855d-4206-9166-12499a0bae02/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 13:34:36,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7999f3c-855d-4206-9166-12499a0bae02/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable19 [2022-12-13 13:34:36,304 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2022-12-13 13:34:36,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:34:36,305 INFO L85 PathProgramCache]: Analyzing trace with hash 571769860, now seen corresponding path program 1 times [2022-12-13 13:34:36,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:34:36,306 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337128007] [2022-12-13 13:34:36,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:34:36,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:34:36,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 13:34:36,343 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 13:34:36,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 13:34:36,358 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 13:34:36,359 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 13:34:36,359 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (28 of 29 remaining) [2022-12-13 13:34:36,359 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 29 remaining) [2022-12-13 13:34:36,359 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 29 remaining) [2022-12-13 13:34:36,359 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 29 remaining) [2022-12-13 13:34:36,359 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 29 remaining) [2022-12-13 13:34:36,359 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 29 remaining) [2022-12-13 13:34:36,359 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 29 remaining) [2022-12-13 13:34:36,360 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 29 remaining) [2022-12-13 13:34:36,360 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 29 remaining) [2022-12-13 13:34:36,360 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 29 remaining) [2022-12-13 13:34:36,360 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 29 remaining) [2022-12-13 13:34:36,360 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 29 remaining) [2022-12-13 13:34:36,360 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 29 remaining) [2022-12-13 13:34:36,360 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 29 remaining) [2022-12-13 13:34:36,360 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 29 remaining) [2022-12-13 13:34:36,360 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 29 remaining) [2022-12-13 13:34:36,360 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 29 remaining) [2022-12-13 13:34:36,360 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 29 remaining) [2022-12-13 13:34:36,361 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 29 remaining) [2022-12-13 13:34:36,361 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 29 remaining) [2022-12-13 13:34:36,361 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 29 remaining) [2022-12-13 13:34:36,361 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 29 remaining) [2022-12-13 13:34:36,361 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 29 remaining) [2022-12-13 13:34:36,361 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 29 remaining) [2022-12-13 13:34:36,361 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 29 remaining) [2022-12-13 13:34:36,361 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 29 remaining) [2022-12-13 13:34:36,361 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 29 remaining) [2022-12-13 13:34:36,361 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 29 remaining) [2022-12-13 13:34:36,361 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 29 remaining) [2022-12-13 13:34:36,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-12-13 13:34:36,362 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:34:36,362 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-13 13:34:36,362 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-12-13 13:34:36,387 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-12-13 13:34:36,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 378 places, 437 transitions, 918 flow [2022-12-13 13:34:36,546 INFO L130 PetriNetUnfolder]: 152/1030 cut-off events. [2022-12-13 13:34:36,546 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2022-12-13 13:34:36,555 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1085 conditions, 1030 events. 152/1030 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 4818 event pairs, 6 based on Foata normal form. 0/800 useless extension candidates. Maximal degree in co-relation 742. Up to 32 conditions per place. [2022-12-13 13:34:36,555 INFO L82 GeneralOperation]: Start removeDead. Operand has 378 places, 437 transitions, 918 flow [2022-12-13 13:34:36,563 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 377 places, 435 transitions, 914 flow [2022-12-13 13:34:36,563 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 13:34:36,563 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 377 places, 435 transitions, 914 flow [2022-12-13 13:34:36,563 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 377 places, 435 transitions, 914 flow [2022-12-13 13:34:36,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 377 places, 435 transitions, 914 flow [2022-12-13 13:34:36,691 INFO L130 PetriNetUnfolder]: 151/1028 cut-off events. [2022-12-13 13:34:36,691 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2022-12-13 13:34:36,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1083 conditions, 1028 events. 151/1028 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 4836 event pairs, 6 based on Foata normal form. 0/799 useless extension candidates. Maximal degree in co-relation 740. Up to 32 conditions per place. [2022-12-13 13:34:36,739 INFO L119 LiptonReduction]: Number of co-enabled transitions 103480 [2022-12-13 13:34:42,621 INFO L134 LiptonReduction]: Checked pairs total: 262878 [2022-12-13 13:34:42,621 INFO L136 LiptonReduction]: Total number of compositions: 358 [2022-12-13 13:34:42,622 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 13:34:42,623 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;@5ec52663, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 13:34:42,623 INFO L358 AbstractCegarLoop]: Starting to check reachability of 33 error locations. [2022-12-13 13:34:42,624 INFO L130 PetriNetUnfolder]: 0/1 cut-off events. [2022-12-13 13:34:42,624 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 13:34:42,624 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:34:42,624 INFO L209 CegarLoopForPetriNet]: trace histogram [1] [2022-12-13 13:34:42,624 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2022-12-13 13:34:42,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:34:42,625 INFO L85 PathProgramCache]: Analyzing trace with hash 3166, now seen corresponding path program 1 times [2022-12-13 13:34:42,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:34:42,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049727275] [2022-12-13 13:34:42,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:34:42,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:34:42,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:34:42,629 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 13:34:42,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:34:42,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049727275] [2022-12-13 13:34:42,629 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049727275] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:34:42,629 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:34:42,630 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-12-13 13:34:42,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920987742] [2022-12-13 13:34:42,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:34:42,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 13:34:42,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:34:42,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 13:34:42,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 13:34:42,631 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 367 out of 795 [2022-12-13 13:34:42,632 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 190 transitions, 424 flow. Second operand has 2 states, 2 states have (on average 367.5) internal successors, (735), 2 states have internal predecessors, (735), 0 states have call successors, (0), 0 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 13:34:42,632 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:34:42,632 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 367 of 795 [2022-12-13 13:34:42,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand