./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_12-ptr_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 38b53e6a 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_e8fc0173-de8c-49b4-a8b3-05c063f3d187/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8fc0173-de8c-49b4-a8b3-05c063f3d187/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8fc0173-de8c-49b4-a8b3-05c063f3d187/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8fc0173-de8c-49b4-a8b3-05c063f3d187/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_12-ptr_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8fc0173-de8c-49b4-a8b3-05c063f3d187/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8fc0173-de8c-49b4-a8b3-05c063f3d187/bin/uautomizer-ZsLfNo2U6R --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 7cd6aaa75855c8ee03a174376352b142cf57dd56532b968b1b6c916585172927 --- 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-38b53e6 [2022-11-25 17:04:21,662 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 17:04:21,664 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 17:04:21,685 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 17:04:21,685 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 17:04:21,686 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 17:04:21,698 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 17:04:21,703 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 17:04:21,705 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 17:04:21,712 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 17:04:21,713 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 17:04:21,714 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 17:04:21,714 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 17:04:21,715 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 17:04:21,716 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 17:04:21,717 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 17:04:21,718 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 17:04:21,719 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 17:04:21,720 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 17:04:21,722 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 17:04:21,726 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 17:04:21,732 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 17:04:21,735 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 17:04:21,736 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 17:04:21,748 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 17:04:21,748 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 17:04:21,748 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 17:04:21,749 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 17:04:21,750 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 17:04:21,750 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 17:04:21,751 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 17:04:21,752 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 17:04:21,752 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 17:04:21,753 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 17:04:21,754 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 17:04:21,754 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 17:04:21,755 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 17:04:21,755 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 17:04:21,755 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 17:04:21,756 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 17:04:21,757 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 17:04:21,762 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8fc0173-de8c-49b4-a8b3-05c063f3d187/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-25 17:04:21,803 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 17:04:21,803 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 17:04:21,804 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 17:04:21,804 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 17:04:21,805 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 17:04:21,805 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 17:04:21,806 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 17:04:21,806 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 17:04:21,806 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 17:04:21,806 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 17:04:21,807 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 17:04:21,808 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 17:04:21,808 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 17:04:21,808 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 17:04:21,808 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 17:04:21,808 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 17:04:21,809 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 17:04:21,809 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 17:04:21,809 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-25 17:04:21,809 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 17:04:21,809 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 17:04:21,810 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 17:04:21,810 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 17:04:21,810 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 17:04:21,810 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 17:04:21,810 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 17:04:21,811 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:04:21,811 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 17:04:21,812 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 17:04:21,812 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 17:04:21,812 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 17:04:21,812 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 17:04:21,813 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 17:04:21,813 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 17:04:21,813 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 17:04:21,813 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 17:04:21,813 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_e8fc0173-de8c-49b4-a8b3-05c063f3d187/bin/uautomizer-ZsLfNo2U6R/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8fc0173-de8c-49b4-a8b3-05c063f3d187/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7cd6aaa75855c8ee03a174376352b142cf57dd56532b968b1b6c916585172927 [2022-11-25 17:04:22,114 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 17:04:22,149 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 17:04:22,151 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 17:04:22,152 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 17:04:22,153 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 17:04:22,154 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8fc0173-de8c-49b4-a8b3-05c063f3d187/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/goblint-regression/28-race_reach_12-ptr_racefree.i [2022-11-25 17:04:25,278 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 17:04:25,506 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 17:04:25,507 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8fc0173-de8c-49b4-a8b3-05c063f3d187/sv-benchmarks/c/goblint-regression/28-race_reach_12-ptr_racefree.i [2022-11-25 17:04:25,520 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8fc0173-de8c-49b4-a8b3-05c063f3d187/bin/uautomizer-ZsLfNo2U6R/data/e1363efe1/db7c4cd253bb45eeb7de7b87abe5af1d/FLAG8bfb29046 [2022-11-25 17:04:25,535 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8fc0173-de8c-49b4-a8b3-05c063f3d187/bin/uautomizer-ZsLfNo2U6R/data/e1363efe1/db7c4cd253bb45eeb7de7b87abe5af1d [2022-11-25 17:04:25,537 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 17:04:25,539 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 17:04:25,540 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 17:04:25,541 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 17:04:25,544 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 17:04:25,545 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:04:25" (1/1) ... [2022-11-25 17:04:25,546 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48050edd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:04:25, skipping insertion in model container [2022-11-25 17:04:25,546 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:04:25" (1/1) ... [2022-11-25 17:04:25,554 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 17:04:25,587 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 17:04:25,890 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_e8fc0173-de8c-49b4-a8b3-05c063f3d187/sv-benchmarks/c/goblint-regression/28-race_reach_12-ptr_racefree.i[30176,30189] [2022-11-25 17:04:25,926 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:04:25,944 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 17:04:26,005 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_e8fc0173-de8c-49b4-a8b3-05c063f3d187/sv-benchmarks/c/goblint-regression/28-race_reach_12-ptr_racefree.i[30176,30189] [2022-11-25 17:04:26,017 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:04:26,059 INFO L208 MainTranslator]: Completed translation [2022-11-25 17:04:26,060 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:04:26 WrapperNode [2022-11-25 17:04:26,060 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 17:04:26,062 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 17:04:26,062 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 17:04:26,062 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 17:04:26,070 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:04:26" (1/1) ... [2022-11-25 17:04:26,083 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:04:26" (1/1) ... [2022-11-25 17:04:26,105 INFO L138 Inliner]: procedures = 170, calls = 37, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 88 [2022-11-25 17:04:26,105 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 17:04:26,106 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 17:04:26,106 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 17:04:26,107 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 17:04:26,116 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:04:26" (1/1) ... [2022-11-25 17:04:26,117 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:04:26" (1/1) ... [2022-11-25 17:04:26,120 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:04:26" (1/1) ... [2022-11-25 17:04:26,120 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:04:26" (1/1) ... [2022-11-25 17:04:26,127 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:04:26" (1/1) ... [2022-11-25 17:04:26,132 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:04:26" (1/1) ... [2022-11-25 17:04:26,134 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:04:26" (1/1) ... [2022-11-25 17:04:26,135 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:04:26" (1/1) ... [2022-11-25 17:04:26,138 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 17:04:26,138 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 17:04:26,139 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 17:04:26,139 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 17:04:26,140 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:04:26" (1/1) ... [2022-11-25 17:04:26,147 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:04:26,160 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8fc0173-de8c-49b4-a8b3-05c063f3d187/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:04:26,173 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8fc0173-de8c-49b4-a8b3-05c063f3d187/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 17:04:26,204 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8fc0173-de8c-49b4-a8b3-05c063f3d187/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 17:04:26,224 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-25 17:04:26,224 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 17:04:26,224 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-25 17:04:26,224 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 17:04:26,225 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 17:04:26,225 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-25 17:04:26,225 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-25 17:04:26,225 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 17:04:26,225 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 17:04:26,226 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 17:04:26,226 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 17:04:26,227 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-25 17:04:26,352 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 17:04:26,354 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 17:04:26,697 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 17:04:26,706 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 17:04:26,706 INFO L300 CfgBuilder]: Removed 10 assume(true) statements. [2022-11-25 17:04:26,708 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:04:26 BoogieIcfgContainer [2022-11-25 17:04:26,708 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 17:04:26,719 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 17:04:26,720 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 17:04:26,726 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 17:04:26,726 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 05:04:25" (1/3) ... [2022-11-25 17:04:26,727 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22d17f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:04:26, skipping insertion in model container [2022-11-25 17:04:26,727 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:04:26" (2/3) ... [2022-11-25 17:04:26,728 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22d17f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:04:26, skipping insertion in model container [2022-11-25 17:04:26,728 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:04:26" (3/3) ... [2022-11-25 17:04:26,729 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_12-ptr_racefree.i [2022-11-25 17:04:26,740 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-25 17:04:26,751 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 17:04:26,751 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-11-25 17:04:26,752 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-25 17:04:26,869 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-11-25 17:04:26,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 129 places, 138 transitions, 284 flow [2022-11-25 17:04:26,982 INFO L130 PetriNetUnfolder]: 17/175 cut-off events. [2022-11-25 17:04:26,982 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-25 17:04:26,989 INFO L83 FinitePrefix]: Finished finitePrefix Result has 181 conditions, 175 events. 17/175 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 416 event pairs, 0 based on Foata normal form. 0/147 useless extension candidates. Maximal degree in co-relation 87. Up to 4 conditions per place. [2022-11-25 17:04:26,989 INFO L82 GeneralOperation]: Start removeDead. Operand has 129 places, 138 transitions, 284 flow [2022-11-25 17:04:26,995 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 127 places, 135 transitions, 278 flow [2022-11-25 17:04:26,999 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 17:04:27,015 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 127 places, 135 transitions, 278 flow [2022-11-25 17:04:27,018 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 127 places, 135 transitions, 278 flow [2022-11-25 17:04:27,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 127 places, 135 transitions, 278 flow [2022-11-25 17:04:27,115 INFO L130 PetriNetUnfolder]: 16/172 cut-off events. [2022-11-25 17:04:27,119 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-25 17:04:27,121 INFO L83 FinitePrefix]: Finished finitePrefix Result has 178 conditions, 172 events. 16/172 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 415 event pairs, 0 based on Foata normal form. 0/145 useless extension candidates. Maximal degree in co-relation 87. Up to 4 conditions per place. [2022-11-25 17:04:27,125 INFO L119 LiptonReduction]: Number of co-enabled transitions 3854 [2022-11-25 17:04:31,433 INFO L134 LiptonReduction]: Checked pairs total: 6497 [2022-11-25 17:04:31,434 INFO L136 LiptonReduction]: Total number of compositions: 126 [2022-11-25 17:04:31,464 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 17:04:31,472 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;@37c1ae92, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 17:04:31,473 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2022-11-25 17:04:31,479 INFO L130 PetriNetUnfolder]: 2/10 cut-off events. [2022-11-25 17:04:31,479 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 17:04:31,480 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:04:31,481 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-11-25 17:04:31,482 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-25 17:04:31,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:04:31,489 INFO L85 PathProgramCache]: Analyzing trace with hash 16158672, now seen corresponding path program 1 times [2022-11-25 17:04:31,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:04:31,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237682280] [2022-11-25 17:04:31,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:04:31,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:04:31,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:04:31,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:04:31,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:04:31,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237682280] [2022-11-25 17:04:31,798 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237682280] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:04:31,798 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:04:31,799 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 17:04:31,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334249591] [2022-11-25 17:04:31,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:04:31,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:04:31,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:04:31,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:04:31,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:04:31,884 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 264 [2022-11-25 17:04:31,889 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 41 transitions, 90 flow. Second operand has 3 states, 3 states have (on average 121.33333333333333) internal successors, (364), 3 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:04:31,889 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:04:31,890 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 264 [2022-11-25 17:04:31,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:04:32,033 INFO L130 PetriNetUnfolder]: 98/232 cut-off events. [2022-11-25 17:04:32,034 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-25 17:04:32,038 INFO L83 FinitePrefix]: Finished finitePrefix Result has 463 conditions, 232 events. 98/232 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 858 event pairs, 78 based on Foata normal form. 8/191 useless extension candidates. Maximal degree in co-relation 441. Up to 207 conditions per place. [2022-11-25 17:04:32,042 INFO L137 encePairwiseOnDemand]: 249/264 looper letters, 39 selfloop transitions, 2 changer transitions 0/44 dead transitions. [2022-11-25 17:04:32,043 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 44 transitions, 178 flow [2022-11-25 17:04:32,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:04:32,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:04:32,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 420 transitions. [2022-11-25 17:04:32,066 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5303030303030303 [2022-11-25 17:04:32,067 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 420 transitions. [2022-11-25 17:04:32,067 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 420 transitions. [2022-11-25 17:04:32,072 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:04:32,074 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 420 transitions. [2022-11-25 17:04:32,079 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 140.0) internal successors, (420), 3 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:04:32,095 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 264.0) internal successors, (1056), 4 states have internal predecessors, (1056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:04:32,099 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 264.0) internal successors, (1056), 4 states have internal predecessors, (1056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:04:32,101 INFO L175 Difference]: Start difference. First operand has 35 places, 41 transitions, 90 flow. Second operand 3 states and 420 transitions. [2022-11-25 17:04:32,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 44 transitions, 178 flow [2022-11-25 17:04:32,104 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 44 transitions, 178 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-25 17:04:32,106 INFO L231 Difference]: Finished difference. Result has 35 places, 29 transitions, 74 flow [2022-11-25 17:04:32,108 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=264, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=74, PETRI_PLACES=35, PETRI_TRANSITIONS=29} [2022-11-25 17:04:32,112 INFO L288 CegarLoopForPetriNet]: 35 programPoint places, 0 predicate places. [2022-11-25 17:04:32,112 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 29 transitions, 74 flow [2022-11-25 17:04:32,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 121.33333333333333) internal successors, (364), 3 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:04:32,113 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:04:32,113 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2022-11-25 17:04:32,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 17:04:32,114 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-25 17:04:32,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:04:32,125 INFO L85 PathProgramCache]: Analyzing trace with hash -1651368686, now seen corresponding path program 1 times [2022-11-25 17:04:32,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:04:32,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427595331] [2022-11-25 17:04:32,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:04:32,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:04:32,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 17:04:32,178 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 17:04:32,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 17:04:32,236 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 17:04:32,237 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-25 17:04:32,240 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2022-11-25 17:04:32,242 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2022-11-25 17:04:32,247 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2022-11-25 17:04:32,248 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 13 remaining) [2022-11-25 17:04:32,248 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 13 remaining) [2022-11-25 17:04:32,249 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 13 remaining) [2022-11-25 17:04:32,249 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 13 remaining) [2022-11-25 17:04:32,250 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 13 remaining) [2022-11-25 17:04:32,251 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 13 remaining) [2022-11-25 17:04:32,251 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 13 remaining) [2022-11-25 17:04:32,251 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 13 remaining) [2022-11-25 17:04:32,252 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2022-11-25 17:04:32,253 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2022-11-25 17:04:32,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 17:04:32,254 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-25 17:04:32,258 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-25 17:04:32,258 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-25 17:04:32,295 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-25 17:04:32,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 167 places, 181 transitions, 380 flow [2022-11-25 17:04:32,360 INFO L130 PetriNetUnfolder]: 31/292 cut-off events. [2022-11-25 17:04:32,361 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-25 17:04:32,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 306 conditions, 292 events. 31/292 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 906 event pairs, 0 based on Foata normal form. 0/239 useless extension candidates. Maximal degree in co-relation 177. Up to 8 conditions per place. [2022-11-25 17:04:32,364 INFO L82 GeneralOperation]: Start removeDead. Operand has 167 places, 181 transitions, 380 flow [2022-11-25 17:04:32,367 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 167 places, 181 transitions, 380 flow [2022-11-25 17:04:32,367 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 17:04:32,367 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 167 places, 181 transitions, 380 flow [2022-11-25 17:04:32,368 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 167 places, 181 transitions, 380 flow [2022-11-25 17:04:32,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 167 places, 181 transitions, 380 flow [2022-11-25 17:04:32,413 INFO L130 PetriNetUnfolder]: 31/292 cut-off events. [2022-11-25 17:04:32,413 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-25 17:04:32,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 306 conditions, 292 events. 31/292 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 906 event pairs, 0 based on Foata normal form. 0/239 useless extension candidates. Maximal degree in co-relation 177. Up to 8 conditions per place. [2022-11-25 17:04:32,423 INFO L119 LiptonReduction]: Number of co-enabled transitions 12628 [2022-11-25 17:04:37,294 INFO L134 LiptonReduction]: Checked pairs total: 26563 [2022-11-25 17:04:37,294 INFO L136 LiptonReduction]: Total number of compositions: 165 [2022-11-25 17:04:37,296 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 17:04:37,297 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;@37c1ae92, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 17:04:37,298 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2022-11-25 17:04:37,301 INFO L130 PetriNetUnfolder]: 3/15 cut-off events. [2022-11-25 17:04:37,301 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 17:04:37,302 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:04:37,302 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-11-25 17:04:37,302 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-25 17:04:37,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:04:37,303 INFO L85 PathProgramCache]: Analyzing trace with hash 872661249, now seen corresponding path program 1 times [2022-11-25 17:04:37,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:04:37,303 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561923108] [2022-11-25 17:04:37,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:04:37,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:04:37,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:04:37,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:04:37,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:04:37,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561923108] [2022-11-25 17:04:37,397 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561923108] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:04:37,400 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:04:37,400 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 17:04:37,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482581517] [2022-11-25 17:04:37,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:04:37,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:04:37,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:04:37,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:04:37,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:04:37,419 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 346 [2022-11-25 17:04:37,420 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 67 transitions, 152 flow. Second operand has 3 states, 3 states have (on average 156.33333333333334) internal successors, (469), 3 states have internal predecessors, (469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:04:37,420 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:04:37,421 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 346 [2022-11-25 17:04:37,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:04:38,252 INFO L130 PetriNetUnfolder]: 4085/6818 cut-off events. [2022-11-25 17:04:38,252 INFO L131 PetriNetUnfolder]: For 79/79 co-relation queries the response was YES. [2022-11-25 17:04:38,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13435 conditions, 6818 events. 4085/6818 cut-off events. For 79/79 co-relation queries the response was YES. Maximal size of possible extension queue 279. Compared 43219 event pairs, 4069 based on Foata normal form. 656/5434 useless extension candidates. Maximal degree in co-relation 10720. Up to 6533 conditions per place. [2022-11-25 17:04:38,291 INFO L137 encePairwiseOnDemand]: 329/346 looper letters, 43 selfloop transitions, 1 changer transitions 0/51 dead transitions. [2022-11-25 17:04:38,292 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 51 transitions, 208 flow [2022-11-25 17:04:38,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:04:38,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:04:38,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 525 transitions. [2022-11-25 17:04:38,294 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5057803468208093 [2022-11-25 17:04:38,294 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 525 transitions. [2022-11-25 17:04:38,294 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 525 transitions. [2022-11-25 17:04:38,295 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:04:38,295 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 525 transitions. [2022-11-25 17:04:38,297 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 175.0) internal successors, (525), 3 states have internal predecessors, (525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:04:38,301 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 346.0) internal successors, (1384), 4 states have internal predecessors, (1384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:04:38,302 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 346.0) internal successors, (1384), 4 states have internal predecessors, (1384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:04:38,302 INFO L175 Difference]: Start difference. First operand has 55 places, 67 transitions, 152 flow. Second operand 3 states and 525 transitions. [2022-11-25 17:04:38,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 51 transitions, 208 flow [2022-11-25 17:04:38,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 51 transitions, 208 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-25 17:04:38,307 INFO L231 Difference]: Finished difference. Result has 56 places, 51 transitions, 122 flow [2022-11-25 17:04:38,308 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=346, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=122, PETRI_PLACES=56, PETRI_TRANSITIONS=51} [2022-11-25 17:04:38,309 INFO L288 CegarLoopForPetriNet]: 55 programPoint places, 1 predicate places. [2022-11-25 17:04:38,309 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 51 transitions, 122 flow [2022-11-25 17:04:38,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 156.33333333333334) internal successors, (469), 3 states have internal predecessors, (469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:04:38,309 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:04:38,310 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-11-25 17:04:38,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-25 17:04:38,310 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-25 17:04:38,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:04:38,310 INFO L85 PathProgramCache]: Analyzing trace with hash 872661250, now seen corresponding path program 1 times [2022-11-25 17:04:38,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:04:38,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692057592] [2022-11-25 17:04:38,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:04:38,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:04:38,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:04:38,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:04:38,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:04:38,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692057592] [2022-11-25 17:04:38,391 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692057592] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:04:38,391 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:04:38,391 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 17:04:38,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027155547] [2022-11-25 17:04:38,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:04:38,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:04:38,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:04:38,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:04:38,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:04:38,408 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 346 [2022-11-25 17:04:38,409 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 51 transitions, 122 flow. Second operand has 3 states, 3 states have (on average 156.33333333333334) internal successors, (469), 3 states have internal predecessors, (469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:04:38,409 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:04:38,409 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 346 [2022-11-25 17:04:38,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:04:39,189 INFO L130 PetriNetUnfolder]: 4071/6813 cut-off events. [2022-11-25 17:04:39,189 INFO L131 PetriNetUnfolder]: For 80/80 co-relation queries the response was YES. [2022-11-25 17:04:39,197 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13422 conditions, 6813 events. 4071/6813 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 279. Compared 44081 event pairs, 1898 based on Foata normal form. 0/4801 useless extension candidates. Maximal degree in co-relation 13414. Up to 6486 conditions per place. [2022-11-25 17:04:39,227 INFO L137 encePairwiseOnDemand]: 342/346 looper letters, 57 selfloop transitions, 2 changer transitions 0/66 dead transitions. [2022-11-25 17:04:39,227 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 66 transitions, 270 flow [2022-11-25 17:04:39,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:04:39,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:04:39,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 526 transitions. [2022-11-25 17:04:39,229 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5067437379576107 [2022-11-25 17:04:39,229 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 526 transitions. [2022-11-25 17:04:39,230 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 526 transitions. [2022-11-25 17:04:39,230 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:04:39,230 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 526 transitions. [2022-11-25 17:04:39,231 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 175.33333333333334) internal successors, (526), 3 states have internal predecessors, (526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:04:39,233 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 346.0) internal successors, (1384), 4 states have internal predecessors, (1384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:04:39,234 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 346.0) internal successors, (1384), 4 states have internal predecessors, (1384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:04:39,234 INFO L175 Difference]: Start difference. First operand has 56 places, 51 transitions, 122 flow. Second operand 3 states and 526 transitions. [2022-11-25 17:04:39,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 66 transitions, 270 flow [2022-11-25 17:04:39,236 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 66 transitions, 269 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 17:04:39,237 INFO L231 Difference]: Finished difference. Result has 58 places, 52 transitions, 135 flow [2022-11-25 17:04:39,237 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=346, PETRI_DIFFERENCE_MINUEND_FLOW=121, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=135, PETRI_PLACES=58, PETRI_TRANSITIONS=52} [2022-11-25 17:04:39,238 INFO L288 CegarLoopForPetriNet]: 55 programPoint places, 3 predicate places. [2022-11-25 17:04:39,238 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 52 transitions, 135 flow [2022-11-25 17:04:39,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 156.33333333333334) internal successors, (469), 3 states have internal predecessors, (469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:04:39,239 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:04:39,239 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:04:39,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-25 17:04:39,239 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-25 17:04:39,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:04:39,239 INFO L85 PathProgramCache]: Analyzing trace with hash 1116837422, now seen corresponding path program 1 times [2022-11-25 17:04:39,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:04:39,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136364607] [2022-11-25 17:04:39,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:04:39,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:04:39,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:04:39,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:04:39,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:04:39,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136364607] [2022-11-25 17:04:39,448 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136364607] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:04:39,448 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:04:39,448 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 17:04:39,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947933523] [2022-11-25 17:04:39,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:04:39,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 17:04:39,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:04:39,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 17:04:39,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:04:39,557 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 346 [2022-11-25 17:04:39,558 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 52 transitions, 135 flow. Second operand has 5 states, 5 states have (on average 150.2) internal successors, (751), 5 states have internal predecessors, (751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:04:39,558 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:04:39,558 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 346 [2022-11-25 17:04:39,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:04:40,503 INFO L130 PetriNetUnfolder]: 4446/7358 cut-off events. [2022-11-25 17:04:40,503 INFO L131 PetriNetUnfolder]: For 532/532 co-relation queries the response was YES. [2022-11-25 17:04:40,514 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15212 conditions, 7358 events. 4446/7358 cut-off events. For 532/532 co-relation queries the response was YES. Maximal size of possible extension queue 276. Compared 47245 event pairs, 1480 based on Foata normal form. 0/5473 useless extension candidates. Maximal degree in co-relation 15202. Up to 5499 conditions per place. [2022-11-25 17:04:40,550 INFO L137 encePairwiseOnDemand]: 338/346 looper letters, 97 selfloop transitions, 14 changer transitions 0/118 dead transitions. [2022-11-25 17:04:40,550 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 118 transitions, 517 flow [2022-11-25 17:04:40,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 17:04:40,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-25 17:04:40,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1006 transitions. [2022-11-25 17:04:40,553 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.48458574181117536 [2022-11-25 17:04:40,553 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1006 transitions. [2022-11-25 17:04:40,553 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1006 transitions. [2022-11-25 17:04:40,554 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:04:40,554 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1006 transitions. [2022-11-25 17:04:40,556 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 167.66666666666666) internal successors, (1006), 6 states have internal predecessors, (1006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:04:40,560 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 346.0) internal successors, (2422), 7 states have internal predecessors, (2422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:04:40,561 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 346.0) internal successors, (2422), 7 states have internal predecessors, (2422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:04:40,562 INFO L175 Difference]: Start difference. First operand has 58 places, 52 transitions, 135 flow. Second operand 6 states and 1006 transitions. [2022-11-25 17:04:40,562 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 118 transitions, 517 flow [2022-11-25 17:04:40,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 118 transitions, 513 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 17:04:40,567 INFO L231 Difference]: Finished difference. Result has 64 places, 65 transitions, 214 flow [2022-11-25 17:04:40,567 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=346, PETRI_DIFFERENCE_MINUEND_FLOW=133, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=214, PETRI_PLACES=64, PETRI_TRANSITIONS=65} [2022-11-25 17:04:40,569 INFO L288 CegarLoopForPetriNet]: 55 programPoint places, 9 predicate places. [2022-11-25 17:04:40,569 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 65 transitions, 214 flow [2022-11-25 17:04:40,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 150.2) internal successors, (751), 5 states have internal predecessors, (751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:04:40,570 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:04:40,570 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-11-25 17:04:40,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-25 17:04:40,570 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-25 17:04:40,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:04:40,571 INFO L85 PathProgramCache]: Analyzing trace with hash 484354754, now seen corresponding path program 1 times [2022-11-25 17:04:40,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:04:40,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405970035] [2022-11-25 17:04:40,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:04:40,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:04:40,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:04:40,623 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 17:04:40,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:04:40,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405970035] [2022-11-25 17:04:40,624 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405970035] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:04:40,624 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:04:40,624 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:04:40,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111611943] [2022-11-25 17:04:40,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:04:40,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:04:40,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:04:40,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:04:40,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:04:40,635 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 346 [2022-11-25 17:04:40,636 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 65 transitions, 214 flow. Second operand has 3 states, 3 states have (on average 156.33333333333334) internal successors, (469), 3 states have internal predecessors, (469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:04:40,636 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:04:40,636 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 346 [2022-11-25 17:04:40,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:04:41,318 INFO L130 PetriNetUnfolder]: 4046/6577 cut-off events. [2022-11-25 17:04:41,319 INFO L131 PetriNetUnfolder]: For 1373/1373 co-relation queries the response was YES. [2022-11-25 17:04:41,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15383 conditions, 6577 events. 4046/6577 cut-off events. For 1373/1373 co-relation queries the response was YES. Maximal size of possible extension queue 269. Compared 42587 event pairs, 559 based on Foata normal form. 0/5420 useless extension candidates. Maximal degree in co-relation 15370. Up to 5391 conditions per place. [2022-11-25 17:04:41,355 INFO L137 encePairwiseOnDemand]: 342/346 looper letters, 84 selfloop transitions, 5 changer transitions 0/96 dead transitions. [2022-11-25 17:04:41,355 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 96 transitions, 481 flow [2022-11-25 17:04:41,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:04:41,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:04:41,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 533 transitions. [2022-11-25 17:04:41,358 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5134874759152216 [2022-11-25 17:04:41,358 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 533 transitions. [2022-11-25 17:04:41,358 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 533 transitions. [2022-11-25 17:04:41,358 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:04:41,359 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 533 transitions. [2022-11-25 17:04:41,360 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 177.66666666666666) internal successors, (533), 3 states have internal predecessors, (533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:04:41,362 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 346.0) internal successors, (1384), 4 states have internal predecessors, (1384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:04:41,363 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 346.0) internal successors, (1384), 4 states have internal predecessors, (1384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:04:41,363 INFO L175 Difference]: Start difference. First operand has 64 places, 65 transitions, 214 flow. Second operand 3 states and 533 transitions. [2022-11-25 17:04:41,363 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 96 transitions, 481 flow [2022-11-25 17:04:41,369 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 96 transitions, 481 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-25 17:04:41,371 INFO L231 Difference]: Finished difference. Result has 66 places, 65 transitions, 231 flow [2022-11-25 17:04:41,372 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=346, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=231, PETRI_PLACES=66, PETRI_TRANSITIONS=65} [2022-11-25 17:04:41,375 INFO L288 CegarLoopForPetriNet]: 55 programPoint places, 11 predicate places. [2022-11-25 17:04:41,375 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 65 transitions, 231 flow [2022-11-25 17:04:41,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 156.33333333333334) internal successors, (469), 3 states have internal predecessors, (469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:04:41,376 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:04:41,376 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:04:41,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-25 17:04:41,377 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-25 17:04:41,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:04:41,378 INFO L85 PathProgramCache]: Analyzing trace with hash -1415856547, now seen corresponding path program 1 times [2022-11-25 17:04:41,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:04:41,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843068672] [2022-11-25 17:04:41,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:04:41,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:04:41,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:04:41,611 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:04:41,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:04:41,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843068672] [2022-11-25 17:04:41,612 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843068672] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:04:41,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1971885046] [2022-11-25 17:04:41,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:04:41,612 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:04:41,613 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8fc0173-de8c-49b4-a8b3-05c063f3d187/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:04:41,616 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8fc0173-de8c-49b4-a8b3-05c063f3d187/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:04:41,619 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8fc0173-de8c-49b4-a8b3-05c063f3d187/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-25 17:04:41,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:04:41,717 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-25 17:04:41,721 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:04:41,806 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-25 17:04:41,807 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-25 17:04:41,837 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-25 17:04:41,962 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-25 17:04:41,980 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:04:41,980 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:04:42,024 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_54 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_54) c_t_funThread1of2ForFork0_~p~0.base) c_t_funThread1of2ForFork0_~p~0.offset) 2147483647)) is different from false [2022-11-25 17:04:42,092 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2022-11-25 17:04:42,092 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1971885046] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:04:42,092 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 17:04:42,092 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 9 [2022-11-25 17:04:42,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890466459] [2022-11-25 17:04:42,093 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 17:04:42,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-25 17:04:42,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:04:42,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-25 17:04:42,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=64, Unknown=3, NotChecked=16, Total=110 [2022-11-25 17:04:42,169 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 346 [2022-11-25 17:04:42,171 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 65 transitions, 231 flow. Second operand has 11 states, 11 states have (on average 130.1818181818182) internal successors, (1432), 11 states have internal predecessors, (1432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:04:42,172 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:04:42,172 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 346 [2022-11-25 17:04:42,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:04:43,310 INFO L130 PetriNetUnfolder]: 3967/6803 cut-off events. [2022-11-25 17:04:43,310 INFO L131 PetriNetUnfolder]: For 3458/3458 co-relation queries the response was YES. [2022-11-25 17:04:43,322 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16105 conditions, 6803 events. 3967/6803 cut-off events. For 3458/3458 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 44597 event pairs, 1027 based on Foata normal form. 61/5754 useless extension candidates. Maximal degree in co-relation 16089. Up to 4781 conditions per place. [2022-11-25 17:04:43,349 INFO L137 encePairwiseOnDemand]: 336/346 looper letters, 111 selfloop transitions, 19 changer transitions 0/137 dead transitions. [2022-11-25 17:04:43,350 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 137 transitions, 720 flow [2022-11-25 17:04:43,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 17:04:43,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-25 17:04:43,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 887 transitions. [2022-11-25 17:04:43,353 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4272639691714836 [2022-11-25 17:04:43,353 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 887 transitions. [2022-11-25 17:04:43,353 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 887 transitions. [2022-11-25 17:04:43,354 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:04:43,354 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 887 transitions. [2022-11-25 17:04:43,356 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 147.83333333333334) internal successors, (887), 6 states have internal predecessors, (887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:04:43,359 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 346.0) internal successors, (2422), 7 states have internal predecessors, (2422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:04:43,360 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 346.0) internal successors, (2422), 7 states have internal predecessors, (2422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:04:43,360 INFO L175 Difference]: Start difference. First operand has 66 places, 65 transitions, 231 flow. Second operand 6 states and 887 transitions. [2022-11-25 17:04:43,360 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 137 transitions, 720 flow [2022-11-25 17:04:43,369 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 137 transitions, 706 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 17:04:43,371 INFO L231 Difference]: Finished difference. Result has 73 places, 73 transitions, 332 flow [2022-11-25 17:04:43,372 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=346, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=332, PETRI_PLACES=73, PETRI_TRANSITIONS=73} [2022-11-25 17:04:43,373 INFO L288 CegarLoopForPetriNet]: 55 programPoint places, 18 predicate places. [2022-11-25 17:04:43,373 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 73 transitions, 332 flow [2022-11-25 17:04:43,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.1818181818182) internal successors, (1432), 11 states have internal predecessors, (1432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:04:43,374 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:04:43,374 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:04:43,380 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8fc0173-de8c-49b4-a8b3-05c063f3d187/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-25 17:04:43,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8fc0173-de8c-49b4-a8b3-05c063f3d187/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:04:43,580 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-25 17:04:43,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:04:43,580 INFO L85 PathProgramCache]: Analyzing trace with hash -719625749, now seen corresponding path program 1 times [2022-11-25 17:04:43,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:04:43,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43324176] [2022-11-25 17:04:43,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:04:43,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:04:43,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:04:43,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:04:43,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:04:43,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43324176] [2022-11-25 17:04:43,688 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43324176] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:04:43,688 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:04:43,689 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:04:43,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2980106] [2022-11-25 17:04:43,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:04:43,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:04:43,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:04:43,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:04:43,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:04:43,732 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 346 [2022-11-25 17:04:43,733 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 73 transitions, 332 flow. Second operand has 3 states, 3 states have (on average 156.0) internal successors, (468), 3 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:04:43,733 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:04:43,733 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 346 [2022-11-25 17:04:43,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:04:44,729 INFO L130 PetriNetUnfolder]: 5662/9652 cut-off events. [2022-11-25 17:04:44,730 INFO L131 PetriNetUnfolder]: For 7405/7405 co-relation queries the response was YES. [2022-11-25 17:04:44,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23966 conditions, 9652 events. 5662/9652 cut-off events. For 7405/7405 co-relation queries the response was YES. Maximal size of possible extension queue 357. Compared 66524 event pairs, 2778 based on Foata normal form. 0/8450 useless extension candidates. Maximal degree in co-relation 23946. Up to 5573 conditions per place. [2022-11-25 17:04:44,798 INFO L137 encePairwiseOnDemand]: 339/346 looper letters, 88 selfloop transitions, 13 changer transitions 0/108 dead transitions. [2022-11-25 17:04:44,798 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 108 transitions, 642 flow [2022-11-25 17:04:44,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:04:44,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:04:44,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 537 transitions. [2022-11-25 17:04:44,800 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5173410404624278 [2022-11-25 17:04:44,800 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 537 transitions. [2022-11-25 17:04:44,801 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 537 transitions. [2022-11-25 17:04:44,801 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:04:44,801 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 537 transitions. [2022-11-25 17:04:44,804 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 179.0) internal successors, (537), 3 states have internal predecessors, (537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:04:44,806 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 346.0) internal successors, (1384), 4 states have internal predecessors, (1384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:04:44,807 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 346.0) internal successors, (1384), 4 states have internal predecessors, (1384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:04:44,807 INFO L175 Difference]: Start difference. First operand has 73 places, 73 transitions, 332 flow. Second operand 3 states and 537 transitions. [2022-11-25 17:04:44,807 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 108 transitions, 642 flow [2022-11-25 17:04:44,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 108 transitions, 640 flow, removed 1 selfloop flow, removed 0 redundant places. [2022-11-25 17:04:44,818 INFO L231 Difference]: Finished difference. Result has 77 places, 77 transitions, 411 flow [2022-11-25 17:04:44,819 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=346, PETRI_DIFFERENCE_MINUEND_FLOW=330, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=411, PETRI_PLACES=77, PETRI_TRANSITIONS=77} [2022-11-25 17:04:44,820 INFO L288 CegarLoopForPetriNet]: 55 programPoint places, 22 predicate places. [2022-11-25 17:04:44,820 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 77 transitions, 411 flow [2022-11-25 17:04:44,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 156.0) internal successors, (468), 3 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:04:44,821 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:04:44,821 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:04:44,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-25 17:04:44,821 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-25 17:04:44,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:04:44,822 INFO L85 PathProgramCache]: Analyzing trace with hash -719625782, now seen corresponding path program 1 times [2022-11-25 17:04:44,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:04:44,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701557702] [2022-11-25 17:04:44,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:04:44,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:04:44,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:04:45,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:04:45,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:04:45,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701557702] [2022-11-25 17:04:45,068 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701557702] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:04:45,068 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:04:45,068 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 17:04:45,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913351112] [2022-11-25 17:04:45,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:04:45,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 17:04:45,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:04:45,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 17:04:45,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-25 17:04:45,348 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 346 [2022-11-25 17:04:45,349 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 77 transitions, 411 flow. Second operand has 7 states, 7 states have (on average 146.28571428571428) internal successors, (1024), 7 states have internal predecessors, (1024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:04:45,350 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:04:45,350 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 346 [2022-11-25 17:04:45,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:04:47,098 INFO L130 PetriNetUnfolder]: 6846/11610 cut-off events. [2022-11-25 17:04:47,098 INFO L131 PetriNetUnfolder]: For 16328/16328 co-relation queries the response was YES. [2022-11-25 17:04:47,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31783 conditions, 11610 events. 6846/11610 cut-off events. For 16328/16328 co-relation queries the response was YES. Maximal size of possible extension queue 441. Compared 82340 event pairs, 2138 based on Foata normal form. 153/10534 useless extension candidates. Maximal degree in co-relation 31761. Up to 7450 conditions per place. [2022-11-25 17:04:47,176 INFO L137 encePairwiseOnDemand]: 333/346 looper letters, 212 selfloop transitions, 45 changer transitions 0/264 dead transitions. [2022-11-25 17:04:47,176 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 264 transitions, 1583 flow [2022-11-25 17:04:47,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-25 17:04:47,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-25 17:04:47,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2119 transitions. [2022-11-25 17:04:47,182 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47109826589595377 [2022-11-25 17:04:47,183 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2119 transitions. [2022-11-25 17:04:47,183 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2119 transitions. [2022-11-25 17:04:47,184 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:04:47,184 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2119 transitions. [2022-11-25 17:04:47,188 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 163.0) internal successors, (2119), 13 states have internal predecessors, (2119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:04:47,195 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 346.0) internal successors, (4844), 14 states have internal predecessors, (4844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:04:47,197 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 346.0) internal successors, (4844), 14 states have internal predecessors, (4844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:04:47,197 INFO L175 Difference]: Start difference. First operand has 77 places, 77 transitions, 411 flow. Second operand 13 states and 2119 transitions. [2022-11-25 17:04:47,198 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 264 transitions, 1583 flow [2022-11-25 17:04:47,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 264 transitions, 1531 flow, removed 4 selfloop flow, removed 2 redundant places. [2022-11-25 17:04:47,254 INFO L231 Difference]: Finished difference. Result has 92 places, 101 transitions, 694 flow [2022-11-25 17:04:47,254 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=346, PETRI_DIFFERENCE_MINUEND_FLOW=383, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=694, PETRI_PLACES=92, PETRI_TRANSITIONS=101} [2022-11-25 17:04:47,255 INFO L288 CegarLoopForPetriNet]: 55 programPoint places, 37 predicate places. [2022-11-25 17:04:47,255 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 101 transitions, 694 flow [2022-11-25 17:04:47,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 146.28571428571428) internal successors, (1024), 7 states have internal predecessors, (1024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:04:47,256 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:04:47,256 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-11-25 17:04:47,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-25 17:04:47,257 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-25 17:04:47,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:04:47,257 INFO L85 PathProgramCache]: Analyzing trace with hash 1608494743, now seen corresponding path program 1 times [2022-11-25 17:04:47,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:04:47,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786998492] [2022-11-25 17:04:47,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:04:47,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:04:47,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 17:04:47,269 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 17:04:47,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 17:04:47,281 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 17:04:47,281 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-25 17:04:47,281 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2022-11-25 17:04:47,281 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2022-11-25 17:04:47,282 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2022-11-25 17:04:47,282 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2022-11-25 17:04:47,282 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2022-11-25 17:04:47,282 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2022-11-25 17:04:47,282 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2022-11-25 17:04:47,282 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2022-11-25 17:04:47,283 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 17 remaining) [2022-11-25 17:04:47,283 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 17 remaining) [2022-11-25 17:04:47,283 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 17 remaining) [2022-11-25 17:04:47,283 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2022-11-25 17:04:47,283 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2022-11-25 17:04:47,283 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2022-11-25 17:04:47,284 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2022-11-25 17:04:47,284 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2022-11-25 17:04:47,284 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2022-11-25 17:04:47,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-25 17:04:47,284 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:04:47,285 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-25 17:04:47,285 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-25 17:04:47,310 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-25 17:04:47,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 205 places, 224 transitions, 478 flow [2022-11-25 17:04:47,376 INFO L130 PetriNetUnfolder]: 50/450 cut-off events. [2022-11-25 17:04:47,376 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-11-25 17:04:47,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 478 conditions, 450 events. 50/450 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1596 event pairs, 1 based on Foata normal form. 0/364 useless extension candidates. Maximal degree in co-relation 300. Up to 16 conditions per place. [2022-11-25 17:04:47,380 INFO L82 GeneralOperation]: Start removeDead. Operand has 205 places, 224 transitions, 478 flow [2022-11-25 17:04:47,384 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 205 places, 224 transitions, 478 flow [2022-11-25 17:04:47,384 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 17:04:47,384 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 205 places, 224 transitions, 478 flow [2022-11-25 17:04:47,384 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 205 places, 224 transitions, 478 flow [2022-11-25 17:04:47,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 205 places, 224 transitions, 478 flow [2022-11-25 17:04:47,445 INFO L130 PetriNetUnfolder]: 50/450 cut-off events. [2022-11-25 17:04:47,445 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-11-25 17:04:47,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 478 conditions, 450 events. 50/450 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1596 event pairs, 1 based on Foata normal form. 0/364 useless extension candidates. Maximal degree in co-relation 300. Up to 16 conditions per place. [2022-11-25 17:04:47,468 INFO L119 LiptonReduction]: Number of co-enabled transitions 24354 [2022-11-25 17:04:53,375 INFO L134 LiptonReduction]: Checked pairs total: 56832 [2022-11-25 17:04:53,376 INFO L136 LiptonReduction]: Total number of compositions: 207 [2022-11-25 17:04:53,377 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 17:04:53,378 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;@37c1ae92, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 17:04:53,378 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2022-11-25 17:04:53,381 INFO L130 PetriNetUnfolder]: 3/15 cut-off events. [2022-11-25 17:04:53,381 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 17:04:53,381 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:04:53,381 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-11-25 17:04:53,381 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-25 17:04:53,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:04:53,382 INFO L85 PathProgramCache]: Analyzing trace with hash 1324450452, now seen corresponding path program 1 times [2022-11-25 17:04:53,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:04:53,382 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123042816] [2022-11-25 17:04:53,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:04:53,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:04:53,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:04:53,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:04:53,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:04:53,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123042816] [2022-11-25 17:04:53,422 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123042816] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:04:53,422 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:04:53,422 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 17:04:53,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643970848] [2022-11-25 17:04:53,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:04:53,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:04:53,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:04:53,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:04:53,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:04:53,434 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 431 [2022-11-25 17:04:53,435 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 90 transitions, 210 flow. Second operand has 3 states, 3 states have (on average 191.33333333333334) internal successors, (574), 3 states have internal predecessors, (574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:04:53,435 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:04:53,435 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 431 [2022-11-25 17:04:53,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:05:03,529 INFO L130 PetriNetUnfolder]: 91371/131311 cut-off events. [2022-11-25 17:05:03,530 INFO L131 PetriNetUnfolder]: For 2429/2429 co-relation queries the response was YES. [2022-11-25 17:05:03,666 INFO L83 FinitePrefix]: Finished finitePrefix Result has 259940 conditions, 131311 events. 91371/131311 cut-off events. For 2429/2429 co-relation queries the response was YES. Maximal size of possible extension queue 3647. Compared 999406 event pairs, 59320 based on Foata normal form. 17394/106032 useless extension candidates. Maximal degree in co-relation 22719. Up to 126980 conditions per place. [2022-11-25 17:05:04,243 INFO L137 encePairwiseOnDemand]: 405/431 looper letters, 72 selfloop transitions, 2 changer transitions 0/84 dead transitions. [2022-11-25 17:05:04,243 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 84 transitions, 346 flow [2022-11-25 17:05:04,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:05:04,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:05:04,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 674 transitions. [2022-11-25 17:05:04,249 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5212683681361175 [2022-11-25 17:05:04,250 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 674 transitions. [2022-11-25 17:05:04,250 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 674 transitions. [2022-11-25 17:05:04,250 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:05:04,251 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 674 transitions. [2022-11-25 17:05:04,252 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 224.66666666666666) internal successors, (674), 3 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:05:04,255 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 431.0) internal successors, (1724), 4 states have internal predecessors, (1724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:05:04,256 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 431.0) internal successors, (1724), 4 states have internal predecessors, (1724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:05:04,256 INFO L175 Difference]: Start difference. First operand has 73 places, 90 transitions, 210 flow. Second operand 3 states and 674 transitions. [2022-11-25 17:05:04,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 84 transitions, 346 flow [2022-11-25 17:05:04,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 84 transitions, 346 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-25 17:05:04,263 INFO L231 Difference]: Finished difference. Result has 76 places, 70 transitions, 184 flow [2022-11-25 17:05:04,263 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=431, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=184, PETRI_PLACES=76, PETRI_TRANSITIONS=70} [2022-11-25 17:05:04,264 INFO L288 CegarLoopForPetriNet]: 73 programPoint places, 3 predicate places. [2022-11-25 17:05:04,264 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 70 transitions, 184 flow [2022-11-25 17:05:04,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 191.33333333333334) internal successors, (574), 3 states have internal predecessors, (574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:05:04,265 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:05:04,265 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:05:04,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-25 17:05:04,266 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-25 17:05:04,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:05:04,267 INFO L85 PathProgramCache]: Analyzing trace with hash 1496334773, now seen corresponding path program 1 times [2022-11-25 17:05:04,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:05:04,267 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840026275] [2022-11-25 17:05:04,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:05:04,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:05:04,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:05:04,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:05:04,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:05:04,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840026275] [2022-11-25 17:05:04,393 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840026275] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:05:04,394 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:05:04,394 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 17:05:04,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063000089] [2022-11-25 17:05:04,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:05:04,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 17:05:04,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:05:04,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 17:05:04,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:05:04,562 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 431 [2022-11-25 17:05:04,564 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 70 transitions, 184 flow. Second operand has 5 states, 5 states have (on average 182.2) internal successors, (911), 5 states have internal predecessors, (911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:05:04,564 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:05:04,564 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 431 [2022-11-25 17:05:04,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:05:19,521 INFO L130 PetriNetUnfolder]: 133915/196657 cut-off events. [2022-11-25 17:05:19,521 INFO L131 PetriNetUnfolder]: For 9664/9664 co-relation queries the response was YES. [2022-11-25 17:05:19,736 INFO L83 FinitePrefix]: Finished finitePrefix Result has 398862 conditions, 196657 events. 133915/196657 cut-off events. For 9664/9664 co-relation queries the response was YES. Maximal size of possible extension queue 5542. Compared 1636458 event pairs, 35636 based on Foata normal form. 0/138852 useless extension candidates. Maximal degree in co-relation 398773. Up to 123016 conditions per place. [2022-11-25 17:05:20,274 INFO L137 encePairwiseOnDemand]: 418/431 looper letters, 180 selfloop transitions, 24 changer transitions 0/214 dead transitions. [2022-11-25 17:05:20,274 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 214 transitions, 941 flow [2022-11-25 17:05:20,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 17:05:20,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-25 17:05:20,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1291 transitions. [2022-11-25 17:05:20,278 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49922660479505027 [2022-11-25 17:05:20,278 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1291 transitions. [2022-11-25 17:05:20,278 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1291 transitions. [2022-11-25 17:05:20,279 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:05:20,279 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1291 transitions. [2022-11-25 17:05:20,282 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 215.16666666666666) internal successors, (1291), 6 states have internal predecessors, (1291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:05:20,286 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 431.0) internal successors, (3017), 7 states have internal predecessors, (3017), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:05:20,287 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 431.0) internal successors, (3017), 7 states have internal predecessors, (3017), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:05:20,287 INFO L175 Difference]: Start difference. First operand has 76 places, 70 transitions, 184 flow. Second operand 6 states and 1291 transitions. [2022-11-25 17:05:20,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 214 transitions, 941 flow [2022-11-25 17:05:20,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 214 transitions, 937 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 17:05:20,325 INFO L231 Difference]: Finished difference. Result has 85 places, 93 transitions, 354 flow [2022-11-25 17:05:20,325 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=431, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=354, PETRI_PLACES=85, PETRI_TRANSITIONS=93} [2022-11-25 17:05:20,326 INFO L288 CegarLoopForPetriNet]: 73 programPoint places, 12 predicate places. [2022-11-25 17:05:20,326 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 93 transitions, 354 flow [2022-11-25 17:05:20,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 182.2) internal successors, (911), 5 states have internal predecessors, (911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:05:20,326 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:05:20,327 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-11-25 17:05:20,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-25 17:05:20,327 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-25 17:05:20,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:05:20,327 INFO L85 PathProgramCache]: Analyzing trace with hash -1578921971, now seen corresponding path program 1 times [2022-11-25 17:05:20,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:05:20,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972942480] [2022-11-25 17:05:20,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:05:20,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:05:20,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:05:20,372 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:05:20,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:05:20,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972942480] [2022-11-25 17:05:20,373 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972942480] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:05:20,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [554430715] [2022-11-25 17:05:20,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:05:20,373 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:05:20,373 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8fc0173-de8c-49b4-a8b3-05c063f3d187/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:05:20,374 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8fc0173-de8c-49b4-a8b3-05c063f3d187/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:05:20,424 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8fc0173-de8c-49b4-a8b3-05c063f3d187/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-25 17:05:20,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:05:20,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 17:05:20,499 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:05:20,530 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:05:20,530 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:05:20,543 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [554430715] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:05:20,543 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 17:05:20,543 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2022-11-25 17:05:20,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198529380] [2022-11-25 17:05:20,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:05:20,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 17:05:20,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:05:20,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 17:05:20,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:05:20,558 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 431 [2022-11-25 17:05:20,560 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 93 transitions, 354 flow. Second operand has 4 states, 4 states have (on average 191.75) internal successors, (767), 4 states have internal predecessors, (767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:05:20,560 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:05:20,560 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 431 [2022-11-25 17:05:20,560 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand