./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_86-lists_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f16cdb66-aaf6-4b62-9256-d78a20ed2c95/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f16cdb66-aaf6-4b62-9256-d78a20ed2c95/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f16cdb66-aaf6-4b62-9256-d78a20ed2c95/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f16cdb66-aaf6-4b62-9256-d78a20ed2c95/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_86-lists_racing.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f16cdb66-aaf6-4b62-9256-d78a20ed2c95/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f16cdb66-aaf6-4b62-9256-d78a20ed2c95/bin/uautomizer-TMbwUNV5ro --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash db5eab03de8fef3e653289c5dcf0b220be6d8b09a4df3c07d6d5a066426e755a --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-18 20:09:01,751 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 20:09:01,753 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 20:09:01,774 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 20:09:01,774 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 20:09:01,775 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 20:09:01,777 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 20:09:01,779 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 20:09:01,781 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 20:09:01,782 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 20:09:01,783 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 20:09:01,785 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 20:09:01,785 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 20:09:01,787 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 20:09:01,788 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 20:09:01,789 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 20:09:01,790 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 20:09:01,791 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 20:09:01,793 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 20:09:01,796 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 20:09:01,798 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 20:09:01,799 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 20:09:01,801 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 20:09:01,802 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 20:09:01,806 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 20:09:01,806 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 20:09:01,807 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 20:09:01,808 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 20:09:01,809 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 20:09:01,810 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 20:09:01,810 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 20:09:01,811 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 20:09:01,812 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 20:09:01,813 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 20:09:01,815 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 20:09:01,815 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 20:09:01,816 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 20:09:01,817 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 20:09:01,817 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 20:09:01,818 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 20:09:01,819 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 20:09:01,824 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f16cdb66-aaf6-4b62-9256-d78a20ed2c95/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-18 20:09:01,870 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 20:09:01,871 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 20:09:01,871 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 20:09:01,871 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 20:09:01,873 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 20:09:01,873 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 20:09:01,874 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 20:09:01,874 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 20:09:01,874 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 20:09:01,874 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 20:09:01,875 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 20:09:01,876 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 20:09:01,876 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 20:09:01,876 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 20:09:01,876 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 20:09:01,877 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 20:09:01,877 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 20:09:01,877 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 20:09:01,877 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-18 20:09:01,877 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 20:09:01,878 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 20:09:01,878 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 20:09:01,878 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 20:09:01,878 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 20:09:01,878 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 20:09:01,879 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 20:09:01,879 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:09:01,879 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 20:09:01,879 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 20:09:01,879 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 20:09:01,880 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 20:09:01,880 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 20:09:01,881 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 20:09:01,881 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 20:09:01,881 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 20:09:01,881 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f16cdb66-aaf6-4b62-9256-d78a20ed2c95/bin/uautomizer-TMbwUNV5ro/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f16cdb66-aaf6-4b62-9256-d78a20ed2c95/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> db5eab03de8fef3e653289c5dcf0b220be6d8b09a4df3c07d6d5a066426e755a [2022-11-18 20:09:02,161 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 20:09:02,188 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 20:09:02,193 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 20:09:02,194 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 20:09:02,195 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 20:09:02,196 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f16cdb66-aaf6-4b62-9256-d78a20ed2c95/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/goblint-regression/28-race_reach_86-lists_racing.i [2022-11-18 20:09:02,287 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f16cdb66-aaf6-4b62-9256-d78a20ed2c95/bin/uautomizer-TMbwUNV5ro/data/8be351b75/8926a5d3a5ba4ee49ae0a1c897e4381c/FLAGa6926242b [2022-11-18 20:09:03,050 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 20:09:03,061 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f16cdb66-aaf6-4b62-9256-d78a20ed2c95/sv-benchmarks/c/goblint-regression/28-race_reach_86-lists_racing.i [2022-11-18 20:09:03,089 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f16cdb66-aaf6-4b62-9256-d78a20ed2c95/bin/uautomizer-TMbwUNV5ro/data/8be351b75/8926a5d3a5ba4ee49ae0a1c897e4381c/FLAGa6926242b [2022-11-18 20:09:03,252 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f16cdb66-aaf6-4b62-9256-d78a20ed2c95/bin/uautomizer-TMbwUNV5ro/data/8be351b75/8926a5d3a5ba4ee49ae0a1c897e4381c [2022-11-18 20:09:03,255 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 20:09:03,256 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 20:09:03,258 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 20:09:03,258 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 20:09:03,262 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 20:09:03,263 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:09:03" (1/1) ... [2022-11-18 20:09:03,264 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36d7cffa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:09:03, skipping insertion in model container [2022-11-18 20:09:03,266 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:09:03" (1/1) ... [2022-11-18 20:09:03,274 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 20:09:03,339 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 20:09:03,836 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f16cdb66-aaf6-4b62-9256-d78a20ed2c95/sv-benchmarks/c/goblint-regression/28-race_reach_86-lists_racing.i[47038,47051] [2022-11-18 20:09:03,893 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:09:03,992 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 20:09:04,042 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f16cdb66-aaf6-4b62-9256-d78a20ed2c95/sv-benchmarks/c/goblint-regression/28-race_reach_86-lists_racing.i[47038,47051] [2022-11-18 20:09:04,068 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:09:04,147 INFO L208 MainTranslator]: Completed translation [2022-11-18 20:09:04,147 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:09:04 WrapperNode [2022-11-18 20:09:04,148 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 20:09:04,149 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 20:09:04,149 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 20:09:04,149 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 20:09:04,157 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:09:04" (1/1) ... [2022-11-18 20:09:04,187 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:09:04" (1/1) ... [2022-11-18 20:09:04,228 INFO L138 Inliner]: procedures = 278, calls = 60, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 241 [2022-11-18 20:09:04,229 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 20:09:04,235 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 20:09:04,235 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 20:09:04,235 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 20:09:04,246 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:09:04" (1/1) ... [2022-11-18 20:09:04,247 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:09:04" (1/1) ... [2022-11-18 20:09:04,253 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:09:04" (1/1) ... [2022-11-18 20:09:04,253 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:09:04" (1/1) ... [2022-11-18 20:09:04,264 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:09:04" (1/1) ... [2022-11-18 20:09:04,273 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:09:04" (1/1) ... [2022-11-18 20:09:04,276 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:09:04" (1/1) ... [2022-11-18 20:09:04,278 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:09:04" (1/1) ... [2022-11-18 20:09:04,282 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 20:09:04,283 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 20:09:04,283 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 20:09:04,283 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 20:09:04,285 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:09:04" (1/1) ... [2022-11-18 20:09:04,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:09:04,318 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f16cdb66-aaf6-4b62-9256-d78a20ed2c95/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:09:04,333 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f16cdb66-aaf6-4b62-9256-d78a20ed2c95/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 20:09:04,347 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f16cdb66-aaf6-4b62-9256-d78a20ed2c95/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 20:09:04,387 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 20:09:04,387 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-18 20:09:04,388 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2022-11-18 20:09:04,388 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2022-11-18 20:09:04,388 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 20:09:04,388 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 20:09:04,388 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2022-11-18 20:09:04,389 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2022-11-18 20:09:04,389 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 20:09:04,389 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-18 20:09:04,389 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-18 20:09:04,389 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 20:09:04,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-18 20:09:04,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 20:09:04,390 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 20:09:04,390 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 20:09:04,392 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-18 20:09:04,640 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 20:09:04,642 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 20:09:05,122 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 20:09:05,132 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 20:09:05,133 INFO L300 CfgBuilder]: Removed 16 assume(true) statements. [2022-11-18 20:09:05,135 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:09:05 BoogieIcfgContainer [2022-11-18 20:09:05,135 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 20:09:05,138 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 20:09:05,138 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 20:09:05,142 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 20:09:05,143 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:09:03" (1/3) ... [2022-11-18 20:09:05,144 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1468c832 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:09:05, skipping insertion in model container [2022-11-18 20:09:05,144 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:09:04" (2/3) ... [2022-11-18 20:09:05,144 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1468c832 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:09:05, skipping insertion in model container [2022-11-18 20:09:05,145 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:09:05" (3/3) ... [2022-11-18 20:09:05,146 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_86-lists_racing.i [2022-11-18 20:09:05,155 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 20:09:05,166 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 20:09:05,166 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2022-11-18 20:09:05,166 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 20:09:05,284 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-11-18 20:09:05,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 248 places, 268 transitions, 558 flow [2022-11-18 20:09:05,575 INFO L130 PetriNetUnfolder]: 54/500 cut-off events. [2022-11-18 20:09:05,575 INFO L131 PetriNetUnfolder]: For 8/16 co-relation queries the response was YES. [2022-11-18 20:09:05,594 INFO L83 FinitePrefix]: Finished finitePrefix Result has 520 conditions, 500 events. 54/500 cut-off events. For 8/16 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 2049 event pairs, 0 based on Foata normal form. 0/410 useless extension candidates. Maximal degree in co-relation 252. Up to 8 conditions per place. [2022-11-18 20:09:05,594 INFO L82 GeneralOperation]: Start removeDead. Operand has 248 places, 268 transitions, 558 flow [2022-11-18 20:09:05,611 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 248 places, 268 transitions, 558 flow [2022-11-18 20:09:05,635 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:09:05,644 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;@79ec6855, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:09:05,644 INFO L358 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2022-11-18 20:09:05,663 INFO L130 PetriNetUnfolder]: 5/84 cut-off events. [2022-11-18 20:09:05,663 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 20:09:05,664 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:09:05,664 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:09:05,665 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-11-18 20:09:05,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:09:05,674 INFO L85 PathProgramCache]: Analyzing trace with hash 823770833, now seen corresponding path program 1 times [2022-11-18 20:09:05,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:09:05,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606778854] [2022-11-18 20:09:05,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:09:05,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:09:05,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:05,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:09:05,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:09:05,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606778854] [2022-11-18 20:09:05,996 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606778854] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:09:05,996 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:09:05,997 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 20:09:05,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207083168] [2022-11-18 20:09:05,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:09:06,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-18 20:09:06,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:09:06,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-18 20:09:06,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 20:09:06,064 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 244 out of 268 [2022-11-18 20:09:06,073 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 268 transitions, 558 flow. Second operand has 2 states, 2 states have (on average 245.0) internal successors, (490), 2 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:09:06,073 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:09:06,073 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 244 of 268 [2022-11-18 20:09:06,074 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:09:06,235 INFO L130 PetriNetUnfolder]: 15/459 cut-off events. [2022-11-18 20:09:06,235 INFO L131 PetriNetUnfolder]: For 33/49 co-relation queries the response was YES. [2022-11-18 20:09:06,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 491 conditions, 459 events. 15/459 cut-off events. For 33/49 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1779 event pairs, 0 based on Foata normal form. 51/457 useless extension candidates. Maximal degree in co-relation 219. Up to 12 conditions per place. [2022-11-18 20:09:06,243 INFO L137 encePairwiseOnDemand]: 251/268 looper letters, 6 selfloop transitions, 0 changer transitions 0/250 dead transitions. [2022-11-18 20:09:06,243 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 250 transitions, 534 flow [2022-11-18 20:09:06,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-18 20:09:06,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-18 20:09:06,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 511 transitions. [2022-11-18 20:09:06,260 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9533582089552238 [2022-11-18 20:09:06,261 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 511 transitions. [2022-11-18 20:09:06,262 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 511 transitions. [2022-11-18 20:09:06,264 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:09:06,266 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 511 transitions. [2022-11-18 20:09:06,270 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 255.5) internal successors, (511), 2 states have internal predecessors, (511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:09:06,276 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 268.0) internal successors, (804), 3 states have internal predecessors, (804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:09:06,278 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 268.0) internal successors, (804), 3 states have internal predecessors, (804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:09:06,279 INFO L175 Difference]: Start difference. First operand has 248 places, 268 transitions, 558 flow. Second operand 2 states and 511 transitions. [2022-11-18 20:09:06,280 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 250 transitions, 534 flow [2022-11-18 20:09:06,285 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 250 transitions, 534 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 20:09:06,290 INFO L231 Difference]: Finished difference. Result has 248 places, 250 transitions, 522 flow [2022-11-18 20:09:06,292 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=268, PETRI_DIFFERENCE_MINUEND_FLOW=522, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=522, PETRI_PLACES=248, PETRI_TRANSITIONS=250} [2022-11-18 20:09:06,296 INFO L288 CegarLoopForPetriNet]: 248 programPoint places, 0 predicate places. [2022-11-18 20:09:06,296 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 250 transitions, 522 flow [2022-11-18 20:09:06,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 245.0) internal successors, (490), 2 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:09:06,297 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:09:06,297 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:09:06,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 20:09:06,298 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-11-18 20:09:06,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:09:06,299 INFO L85 PathProgramCache]: Analyzing trace with hash 952853552, now seen corresponding path program 1 times [2022-11-18 20:09:06,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:09:06,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536411402] [2022-11-18 20:09:06,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:09:06,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:09:06,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:06,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:09:06,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:09:06,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536411402] [2022-11-18 20:09:06,474 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536411402] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:09:06,475 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:09:06,475 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:09:06,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41088883] [2022-11-18 20:09:06,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:09:06,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:09:06,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:09:06,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:09:06,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:09:06,493 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 236 out of 268 [2022-11-18 20:09:06,494 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 250 transitions, 522 flow. Second operand has 3 states, 3 states have (on average 237.33333333333334) internal successors, (712), 3 states have internal predecessors, (712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:09:06,495 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:09:06,495 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 236 of 268 [2022-11-18 20:09:06,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:09:06,698 INFO L130 PetriNetUnfolder]: 15/478 cut-off events. [2022-11-18 20:09:06,699 INFO L131 PetriNetUnfolder]: For 33/49 co-relation queries the response was YES. [2022-11-18 20:09:06,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 524 conditions, 478 events. 15/478 cut-off events. For 33/49 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1775 event pairs, 0 based on Foata normal form. 0/423 useless extension candidates. Maximal degree in co-relation 519. Up to 20 conditions per place. [2022-11-18 20:09:06,703 INFO L137 encePairwiseOnDemand]: 265/268 looper letters, 17 selfloop transitions, 2 changer transitions 0/255 dead transitions. [2022-11-18 20:09:06,704 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 255 transitions, 570 flow [2022-11-18 20:09:06,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:09:06,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 20:09:06,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 728 transitions. [2022-11-18 20:09:06,707 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9054726368159204 [2022-11-18 20:09:06,708 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 728 transitions. [2022-11-18 20:09:06,708 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 728 transitions. [2022-11-18 20:09:06,709 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:09:06,709 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 728 transitions. [2022-11-18 20:09:06,711 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 242.66666666666666) internal successors, (728), 3 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:09:06,714 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 268.0) internal successors, (1072), 4 states have internal predecessors, (1072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:09:06,715 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 268.0) internal successors, (1072), 4 states have internal predecessors, (1072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:09:06,715 INFO L175 Difference]: Start difference. First operand has 248 places, 250 transitions, 522 flow. Second operand 3 states and 728 transitions. [2022-11-18 20:09:06,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 255 transitions, 570 flow [2022-11-18 20:09:06,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 255 transitions, 570 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 20:09:06,722 INFO L231 Difference]: Finished difference. Result has 251 places, 251 transitions, 534 flow [2022-11-18 20:09:06,723 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=268, PETRI_DIFFERENCE_MINUEND_FLOW=522, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=534, PETRI_PLACES=251, PETRI_TRANSITIONS=251} [2022-11-18 20:09:06,724 INFO L288 CegarLoopForPetriNet]: 248 programPoint places, 3 predicate places. [2022-11-18 20:09:06,724 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 251 transitions, 534 flow [2022-11-18 20:09:06,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 237.33333333333334) internal successors, (712), 3 states have internal predecessors, (712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:09:06,725 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:09:06,726 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:09:06,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 20:09:06,726 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-11-18 20:09:06,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:09:06,727 INFO L85 PathProgramCache]: Analyzing trace with hash -224756764, now seen corresponding path program 1 times [2022-11-18 20:09:06,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:09:06,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792738278] [2022-11-18 20:09:06,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:09:06,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:09:06,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:06,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:09:06,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:09:06,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792738278] [2022-11-18 20:09:06,959 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792738278] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:09:06,959 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:09:06,959 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:09:06,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775433390] [2022-11-18 20:09:06,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:09:06,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:09:06,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:09:06,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:09:06,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:09:06,968 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 268 [2022-11-18 20:09:06,970 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 251 transitions, 534 flow. Second operand has 4 states, 4 states have (on average 232.75) internal successors, (931), 4 states have internal predecessors, (931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:09:06,970 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:09:06,971 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 268 [2022-11-18 20:09:06,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:09:07,151 INFO L130 PetriNetUnfolder]: 15/477 cut-off events. [2022-11-18 20:09:07,151 INFO L131 PetriNetUnfolder]: For 34/50 co-relation queries the response was YES. [2022-11-18 20:09:07,155 INFO L83 FinitePrefix]: Finished finitePrefix Result has 538 conditions, 477 events. 15/477 cut-off events. For 34/50 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1791 event pairs, 0 based on Foata normal form. 0/425 useless extension candidates. Maximal degree in co-relation 531. Up to 25 conditions per place. [2022-11-18 20:09:07,157 INFO L137 encePairwiseOnDemand]: 262/268 looper letters, 23 selfloop transitions, 4 changer transitions 0/258 dead transitions. [2022-11-18 20:09:07,157 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 258 transitions, 602 flow [2022-11-18 20:09:07,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:09:07,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 20:09:07,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1184 transitions. [2022-11-18 20:09:07,163 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8835820895522388 [2022-11-18 20:09:07,163 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1184 transitions. [2022-11-18 20:09:07,163 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1184 transitions. [2022-11-18 20:09:07,164 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:09:07,164 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1184 transitions. [2022-11-18 20:09:07,167 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 236.8) internal successors, (1184), 5 states have internal predecessors, (1184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:09:07,170 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 268.0) internal successors, (1608), 6 states have internal predecessors, (1608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:09:07,171 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 268.0) internal successors, (1608), 6 states have internal predecessors, (1608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:09:07,171 INFO L175 Difference]: Start difference. First operand has 251 places, 251 transitions, 534 flow. Second operand 5 states and 1184 transitions. [2022-11-18 20:09:07,171 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 258 transitions, 602 flow [2022-11-18 20:09:07,175 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 258 transitions, 600 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 20:09:07,178 INFO L231 Difference]: Finished difference. Result has 257 places, 253 transitions, 558 flow [2022-11-18 20:09:07,179 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=268, PETRI_DIFFERENCE_MINUEND_FLOW=532, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=558, PETRI_PLACES=257, PETRI_TRANSITIONS=253} [2022-11-18 20:09:07,181 INFO L288 CegarLoopForPetriNet]: 248 programPoint places, 9 predicate places. [2022-11-18 20:09:07,182 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 253 transitions, 558 flow [2022-11-18 20:09:07,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 232.75) internal successors, (931), 4 states have internal predecessors, (931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:09:07,183 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:09:07,183 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:09:07,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 20:09:07,183 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-11-18 20:09:07,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:09:07,184 INFO L85 PathProgramCache]: Analyzing trace with hash -735730463, now seen corresponding path program 1 times [2022-11-18 20:09:07,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:09:07,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519236122] [2022-11-18 20:09:07,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:09:07,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:09:07,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:07,452 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:09:07,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:09:07,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519236122] [2022-11-18 20:09:07,453 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519236122] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:09:07,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1273078343] [2022-11-18 20:09:07,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:09:07,454 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:09:07,454 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f16cdb66-aaf6-4b62-9256-d78a20ed2c95/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:09:07,469 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f16cdb66-aaf6-4b62-9256-d78a20ed2c95/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:09:07,491 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f16cdb66-aaf6-4b62-9256-d78a20ed2c95/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 20:09:07,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:07,653 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 20:09:07,659 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:09:07,783 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:09:07,783 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:09:07,874 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:09:07,875 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1273078343] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:09:07,875 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:09:07,875 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-18 20:09:07,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581871669] [2022-11-18 20:09:07,876 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:09:07,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 20:09:07,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:09:07,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 20:09:07,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-18 20:09:07,884 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 268 [2022-11-18 20:09:07,888 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 253 transitions, 558 flow. Second operand has 10 states, 10 states have (on average 234.0) internal successors, (2340), 10 states have internal predecessors, (2340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:09:07,891 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:09:07,892 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 268 [2022-11-18 20:09:07,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:09:08,175 INFO L130 PetriNetUnfolder]: 15/497 cut-off events. [2022-11-18 20:09:08,175 INFO L131 PetriNetUnfolder]: For 40/56 co-relation queries the response was YES. [2022-11-18 20:09:08,179 INFO L83 FinitePrefix]: Finished finitePrefix Result has 585 conditions, 497 events. 15/497 cut-off events. For 40/56 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1696 event pairs, 0 based on Foata normal form. 3/450 useless extension candidates. Maximal degree in co-relation 575. Up to 16 conditions per place. [2022-11-18 20:09:08,182 INFO L137 encePairwiseOnDemand]: 260/268 looper letters, 26 selfloop transitions, 11 changer transitions 0/268 dead transitions. [2022-11-18 20:09:08,182 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 268 transitions, 670 flow [2022-11-18 20:09:08,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 20:09:08,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-18 20:09:08,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2581 transitions. [2022-11-18 20:09:08,194 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8755088195386703 [2022-11-18 20:09:08,194 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2581 transitions. [2022-11-18 20:09:08,194 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2581 transitions. [2022-11-18 20:09:08,196 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:09:08,197 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2581 transitions. [2022-11-18 20:09:08,204 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 234.63636363636363) internal successors, (2581), 11 states have internal predecessors, (2581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:09:08,211 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 268.0) internal successors, (3216), 12 states have internal predecessors, (3216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:09:08,213 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 268.0) internal successors, (3216), 12 states have internal predecessors, (3216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:09:08,213 INFO L175 Difference]: Start difference. First operand has 257 places, 253 transitions, 558 flow. Second operand 11 states and 2581 transitions. [2022-11-18 20:09:08,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 268 transitions, 670 flow [2022-11-18 20:09:08,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 268 transitions, 666 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-18 20:09:08,221 INFO L231 Difference]: Finished difference. Result has 270 places, 258 transitions, 620 flow [2022-11-18 20:09:08,222 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=268, PETRI_DIFFERENCE_MINUEND_FLOW=554, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=620, PETRI_PLACES=270, PETRI_TRANSITIONS=258} [2022-11-18 20:09:08,223 INFO L288 CegarLoopForPetriNet]: 248 programPoint places, 22 predicate places. [2022-11-18 20:09:08,224 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 258 transitions, 620 flow [2022-11-18 20:09:08,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 234.0) internal successors, (2340), 10 states have internal predecessors, (2340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:09:08,226 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:09:08,227 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:09:08,239 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f16cdb66-aaf6-4b62-9256-d78a20ed2c95/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-18 20:09:08,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f16cdb66-aaf6-4b62-9256-d78a20ed2c95/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:09:08,435 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-11-18 20:09:08,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:09:08,435 INFO L85 PathProgramCache]: Analyzing trace with hash 1319994086, now seen corresponding path program 1 times [2022-11-18 20:09:08,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:09:08,435 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433505301] [2022-11-18 20:09:08,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:09:08,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:09:08,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:08,666 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:09:08,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:09:08,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433505301] [2022-11-18 20:09:08,667 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433505301] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:09:08,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1831063273] [2022-11-18 20:09:08,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:09:08,668 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:09:08,668 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f16cdb66-aaf6-4b62-9256-d78a20ed2c95/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:09:08,669 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f16cdb66-aaf6-4b62-9256-d78a20ed2c95/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:09:08,695 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f16cdb66-aaf6-4b62-9256-d78a20ed2c95/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 20:09:08,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:08,827 INFO L263 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 20:09:08,829 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:09:08,905 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:09:08,905 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:09:08,906 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1831063273] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:09:08,906 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:09:08,906 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-18 20:09:08,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768256989] [2022-11-18 20:09:08,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:09:08,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:09:08,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:09:08,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:09:08,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:09:08,910 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 268 [2022-11-18 20:09:08,913 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 258 transitions, 620 flow. Second operand has 6 states, 6 states have (on average 233.66666666666666) internal successors, (1402), 6 states have internal predecessors, (1402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:09:08,913 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:09:08,913 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 268 [2022-11-18 20:09:08,913 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:09:09,117 INFO L130 PetriNetUnfolder]: 15/495 cut-off events. [2022-11-18 20:09:09,117 INFO L131 PetriNetUnfolder]: For 61/77 co-relation queries the response was YES. [2022-11-18 20:09:09,121 INFO L83 FinitePrefix]: Finished finitePrefix Result has 604 conditions, 495 events. 15/495 cut-off events. For 61/77 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1674 event pairs, 0 based on Foata normal form. 2/447 useless extension candidates. Maximal degree in co-relation 590. Up to 22 conditions per place. [2022-11-18 20:09:09,123 INFO L137 encePairwiseOnDemand]: 263/268 looper letters, 22 selfloop transitions, 8 changer transitions 0/261 dead transitions. [2022-11-18 20:09:09,123 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 261 transitions, 678 flow [2022-11-18 20:09:09,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:09:09,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 20:09:09,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1644 transitions. [2022-11-18 20:09:09,128 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8763326226012793 [2022-11-18 20:09:09,128 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1644 transitions. [2022-11-18 20:09:09,128 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1644 transitions. [2022-11-18 20:09:09,129 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:09:09,130 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1644 transitions. [2022-11-18 20:09:09,134 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 234.85714285714286) internal successors, (1644), 7 states have internal predecessors, (1644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:09:09,138 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 268.0) internal successors, (2144), 8 states have internal predecessors, (2144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:09:09,139 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 268.0) internal successors, (2144), 8 states have internal predecessors, (2144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:09:09,139 INFO L175 Difference]: Start difference. First operand has 270 places, 258 transitions, 620 flow. Second operand 7 states and 1644 transitions. [2022-11-18 20:09:09,140 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 261 transitions, 678 flow [2022-11-18 20:09:09,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 261 transitions, 664 flow, removed 4 selfloop flow, removed 3 redundant places. [2022-11-18 20:09:09,147 INFO L231 Difference]: Finished difference. Result has 270 places, 256 transitions, 608 flow [2022-11-18 20:09:09,148 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=268, PETRI_DIFFERENCE_MINUEND_FLOW=592, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=608, PETRI_PLACES=270, PETRI_TRANSITIONS=256} [2022-11-18 20:09:09,148 INFO L288 CegarLoopForPetriNet]: 248 programPoint places, 22 predicate places. [2022-11-18 20:09:09,149 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 256 transitions, 608 flow [2022-11-18 20:09:09,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 233.66666666666666) internal successors, (1402), 6 states have internal predecessors, (1402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:09:09,150 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:09:09,150 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:09:09,161 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f16cdb66-aaf6-4b62-9256-d78a20ed2c95/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-18 20:09:09,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f16cdb66-aaf6-4b62-9256-d78a20ed2c95/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:09:09,361 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-11-18 20:09:09,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:09:09,362 INFO L85 PathProgramCache]: Analyzing trace with hash -798197374, now seen corresponding path program 1 times [2022-11-18 20:09:09,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:09:09,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883586481] [2022-11-18 20:09:09,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:09:09,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:09:09,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:09,470 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-18 20:09:09,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:09:09,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883586481] [2022-11-18 20:09:09,471 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883586481] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:09:09,471 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:09:09,471 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:09:09,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053049469] [2022-11-18 20:09:09,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:09:09,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:09:09,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:09:09,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:09:09,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:09:09,475 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 268 [2022-11-18 20:09:09,476 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 256 transitions, 608 flow. Second operand has 4 states, 4 states have (on average 234.75) internal successors, (939), 4 states have internal predecessors, (939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:09:09,476 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:09:09,476 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 268 [2022-11-18 20:09:09,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:09:09,628 INFO L130 PetriNetUnfolder]: 15/494 cut-off events. [2022-11-18 20:09:09,628 INFO L131 PetriNetUnfolder]: For 62/78 co-relation queries the response was YES. [2022-11-18 20:09:09,631 INFO L83 FinitePrefix]: Finished finitePrefix Result has 602 conditions, 494 events. 15/494 cut-off events. For 62/78 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1674 event pairs, 0 based on Foata normal form. 1/445 useless extension candidates. Maximal degree in co-relation 587. Up to 17 conditions per place. [2022-11-18 20:09:09,633 INFO L137 encePairwiseOnDemand]: 262/268 looper letters, 13 selfloop transitions, 12 changer transitions 0/256 dead transitions. [2022-11-18 20:09:09,633 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 256 transitions, 656 flow [2022-11-18 20:09:09,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:09:09,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 20:09:09,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1174 transitions. [2022-11-18 20:09:09,640 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8761194029850746 [2022-11-18 20:09:09,640 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1174 transitions. [2022-11-18 20:09:09,640 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1174 transitions. [2022-11-18 20:09:09,641 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:09:09,641 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1174 transitions. [2022-11-18 20:09:09,644 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 234.8) internal successors, (1174), 5 states have internal predecessors, (1174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:09:09,647 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 268.0) internal successors, (1608), 6 states have internal predecessors, (1608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:09:09,650 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 268.0) internal successors, (1608), 6 states have internal predecessors, (1608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:09:09,650 INFO L175 Difference]: Start difference. First operand has 270 places, 256 transitions, 608 flow. Second operand 5 states and 1174 transitions. [2022-11-18 20:09:09,650 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 256 transitions, 656 flow [2022-11-18 20:09:09,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 256 transitions, 637 flow, removed 2 selfloop flow, removed 8 redundant places. [2022-11-18 20:09:09,658 INFO L231 Difference]: Finished difference. Result has 266 places, 256 transitions, 619 flow [2022-11-18 20:09:09,659 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=268, PETRI_DIFFERENCE_MINUEND_FLOW=583, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=619, PETRI_PLACES=266, PETRI_TRANSITIONS=256} [2022-11-18 20:09:09,662 INFO L288 CegarLoopForPetriNet]: 248 programPoint places, 18 predicate places. [2022-11-18 20:09:09,663 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 256 transitions, 619 flow [2022-11-18 20:09:09,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 234.75) internal successors, (939), 4 states have internal predecessors, (939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:09:09,663 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:09:09,663 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:09:09,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-18 20:09:09,664 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-11-18 20:09:09,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:09:09,664 INFO L85 PathProgramCache]: Analyzing trace with hash -629082237, now seen corresponding path program 2 times [2022-11-18 20:09:09,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:09:09,665 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568423173] [2022-11-18 20:09:09,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:09:09,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:09:09,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:09,852 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2022-11-18 20:09:09,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:09:09,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568423173] [2022-11-18 20:09:09,853 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568423173] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:09:09,853 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:09:09,853 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:09:09,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027968617] [2022-11-18 20:09:09,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:09:09,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:09:09,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:09:09,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:09:09,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:09:09,857 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 232 out of 268 [2022-11-18 20:09:09,858 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 256 transitions, 619 flow. Second operand has 4 states, 4 states have (on average 233.75) internal successors, (935), 4 states have internal predecessors, (935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:09:09,858 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:09:09,858 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 232 of 268 [2022-11-18 20:09:09,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:09:09,972 INFO L130 PetriNetUnfolder]: 10/374 cut-off events. [2022-11-18 20:09:09,972 INFO L131 PetriNetUnfolder]: For 55/101 co-relation queries the response was YES. [2022-11-18 20:09:09,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 467 conditions, 374 events. 10/374 cut-off events. For 55/101 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 923 event pairs, 0 based on Foata normal form. 6/345 useless extension candidates. Maximal degree in co-relation 456. Up to 15 conditions per place. [2022-11-18 20:09:09,976 INFO L137 encePairwiseOnDemand]: 261/268 looper letters, 14 selfloop transitions, 4 changer transitions 0/256 dead transitions. [2022-11-18 20:09:09,980 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 256 transitions, 655 flow [2022-11-18 20:09:09,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:09:09,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 20:09:09,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1181 transitions. [2022-11-18 20:09:09,985 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8813432835820896 [2022-11-18 20:09:09,985 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1181 transitions. [2022-11-18 20:09:09,986 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1181 transitions. [2022-11-18 20:09:09,986 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:09:09,987 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1181 transitions. [2022-11-18 20:09:09,989 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 236.2) internal successors, (1181), 5 states have internal predecessors, (1181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:09:09,992 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 268.0) internal successors, (1608), 6 states have internal predecessors, (1608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:09:09,993 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 268.0) internal successors, (1608), 6 states have internal predecessors, (1608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:09:09,993 INFO L175 Difference]: Start difference. First operand has 266 places, 256 transitions, 619 flow. Second operand 5 states and 1181 transitions. [2022-11-18 20:09:09,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 256 transitions, 655 flow [2022-11-18 20:09:09,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 256 transitions, 637 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 20:09:10,003 INFO L231 Difference]: Finished difference. Result has 266 places, 254 transitions, 609 flow [2022-11-18 20:09:10,004 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=268, PETRI_DIFFERENCE_MINUEND_FLOW=597, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=609, PETRI_PLACES=266, PETRI_TRANSITIONS=254} [2022-11-18 20:09:10,005 INFO L288 CegarLoopForPetriNet]: 248 programPoint places, 18 predicate places. [2022-11-18 20:09:10,005 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 254 transitions, 609 flow [2022-11-18 20:09:10,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 233.75) internal successors, (935), 4 states have internal predecessors, (935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:09:10,006 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:09:10,006 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:09:10,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-18 20:09:10,007 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-11-18 20:09:10,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:09:10,017 INFO L85 PathProgramCache]: Analyzing trace with hash 851622262, now seen corresponding path program 1 times [2022-11-18 20:09:10,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:09:10,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782436678] [2022-11-18 20:09:10,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:09:10,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:09:10,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:10,352 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 20:09:10,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:09:10,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782436678] [2022-11-18 20:09:10,355 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782436678] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:09:10,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [726230775] [2022-11-18 20:09:10,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:09:10,357 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:09:10,358 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f16cdb66-aaf6-4b62-9256-d78a20ed2c95/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:09:10,359 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f16cdb66-aaf6-4b62-9256-d78a20ed2c95/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:09:10,383 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f16cdb66-aaf6-4b62-9256-d78a20ed2c95/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 20:09:10,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:10,555 INFO L263 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 20:09:10,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:09:10,671 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 20:09:10,671 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:09:10,864 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 20:09:10,864 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [726230775] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:09:10,865 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:09:10,865 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-11-18 20:09:10,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457576612] [2022-11-18 20:09:10,865 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:09:10,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-18 20:09:10,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:09:10,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-18 20:09:10,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2022-11-18 20:09:10,873 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 268 [2022-11-18 20:09:10,878 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 254 transitions, 609 flow. Second operand has 18 states, 18 states have (on average 234.44444444444446) internal successors, (4220), 18 states have internal predecessors, (4220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:09:10,878 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:09:10,878 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 268 [2022-11-18 20:09:10,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:09:11,277 INFO L130 PetriNetUnfolder]: 10/446 cut-off events. [2022-11-18 20:09:11,277 INFO L131 PetriNetUnfolder]: For 85/99 co-relation queries the response was YES. [2022-11-18 20:09:11,280 INFO L83 FinitePrefix]: Finished finitePrefix Result has 625 conditions, 446 events. 10/446 cut-off events. For 85/99 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 926 event pairs, 0 based on Foata normal form. 4/416 useless extension candidates. Maximal degree in co-relation 612. Up to 15 conditions per place. [2022-11-18 20:09:11,282 INFO L137 encePairwiseOnDemand]: 262/268 looper letters, 45 selfloop transitions, 21 changer transitions 0/295 dead transitions. [2022-11-18 20:09:11,282 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 295 transitions, 907 flow [2022-11-18 20:09:11,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-18 20:09:11,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-18 20:09:11,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 4921 transitions. [2022-11-18 20:09:11,294 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8743781094527363 [2022-11-18 20:09:11,294 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 4921 transitions. [2022-11-18 20:09:11,294 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 4921 transitions. [2022-11-18 20:09:11,298 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:09:11,298 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 4921 transitions. [2022-11-18 20:09:11,310 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 234.33333333333334) internal successors, (4921), 21 states have internal predecessors, (4921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:09:11,321 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 268.0) internal successors, (5896), 22 states have internal predecessors, (5896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:09:11,325 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 268.0) internal successors, (5896), 22 states have internal predecessors, (5896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:09:11,325 INFO L175 Difference]: Start difference. First operand has 266 places, 254 transitions, 609 flow. Second operand 21 states and 4921 transitions. [2022-11-18 20:09:11,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 295 transitions, 907 flow [2022-11-18 20:09:11,328 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 295 transitions, 899 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-18 20:09:11,333 INFO L231 Difference]: Finished difference. Result has 287 places, 267 transitions, 757 flow [2022-11-18 20:09:11,333 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=268, PETRI_DIFFERENCE_MINUEND_FLOW=601, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=757, PETRI_PLACES=287, PETRI_TRANSITIONS=267} [2022-11-18 20:09:11,334 INFO L288 CegarLoopForPetriNet]: 248 programPoint places, 39 predicate places. [2022-11-18 20:09:11,334 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 267 transitions, 757 flow [2022-11-18 20:09:11,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 234.44444444444446) internal successors, (4220), 18 states have internal predecessors, (4220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:09:11,337 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:09:11,337 INFO L209 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:09:11,355 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f16cdb66-aaf6-4b62-9256-d78a20ed2c95/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-18 20:09:11,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f16cdb66-aaf6-4b62-9256-d78a20ed2c95/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-18 20:09:11,544 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-11-18 20:09:11,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:09:11,544 INFO L85 PathProgramCache]: Analyzing trace with hash 928374714, now seen corresponding path program 2 times [2022-11-18 20:09:11,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:09:11,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061046802] [2022-11-18 20:09:11,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:09:11,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:09:11,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:12,293 INFO L134 CoverageAnalysis]: Checked inductivity of 390 backedges. 0 proven. 385 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 20:09:12,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:09:12,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061046802] [2022-11-18 20:09:12,294 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061046802] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:09:12,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1632639699] [2022-11-18 20:09:12,295 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:09:12,295 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:09:12,295 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f16cdb66-aaf6-4b62-9256-d78a20ed2c95/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:09:12,305 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f16cdb66-aaf6-4b62-9256-d78a20ed2c95/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:09:12,310 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f16cdb66-aaf6-4b62-9256-d78a20ed2c95/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 20:09:12,577 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 20:09:12,577 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:09:12,580 INFO L263 TraceCheckSpWp]: Trace formula consists of 683 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-18 20:09:12,585 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:09:12,845 INFO L134 CoverageAnalysis]: Checked inductivity of 390 backedges. 0 proven. 385 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 20:09:12,845 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:09:13,382 INFO L134 CoverageAnalysis]: Checked inductivity of 390 backedges. 0 proven. 385 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 20:09:13,383 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1632639699] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:09:13,383 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:09:13,383 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 34 [2022-11-18 20:09:13,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115167497] [2022-11-18 20:09:13,384 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:09:13,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-11-18 20:09:13,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:09:13,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-11-18 20:09:13,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=306, Invalid=816, Unknown=0, NotChecked=0, Total=1122 [2022-11-18 20:09:13,393 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 268 [2022-11-18 20:09:13,401 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 267 transitions, 757 flow. Second operand has 34 states, 34 states have (on average 234.7058823529412) internal successors, (7980), 34 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:09:13,401 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:09:13,401 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 268 [2022-11-18 20:09:13,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:09:14,324 INFO L130 PetriNetUnfolder]: 10/590 cut-off events. [2022-11-18 20:09:14,324 INFO L131 PetriNetUnfolder]: For 432/446 co-relation queries the response was YES. [2022-11-18 20:09:14,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 998 conditions, 590 events. 10/590 cut-off events. For 432/446 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 925 event pairs, 0 based on Foata normal form. 8/564 useless extension candidates. Maximal degree in co-relation 981. Up to 19 conditions per place. [2022-11-18 20:09:14,329 INFO L137 encePairwiseOnDemand]: 262/268 looper letters, 85 selfloop transitions, 45 changer transitions 0/359 dead transitions. [2022-11-18 20:09:14,330 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 359 transitions, 1485 flow [2022-11-18 20:09:14,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-11-18 20:09:14,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2022-11-18 20:09:14,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 10533 transitions. [2022-11-18 20:09:14,350 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8733830845771144 [2022-11-18 20:09:14,351 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 10533 transitions. [2022-11-18 20:09:14,351 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 10533 transitions. [2022-11-18 20:09:14,358 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:09:14,358 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 10533 transitions. [2022-11-18 20:09:14,382 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 234.06666666666666) internal successors, (10533), 45 states have internal predecessors, (10533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:09:14,404 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 268.0) internal successors, (12328), 46 states have internal predecessors, (12328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:09:14,408 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 268.0) internal successors, (12328), 46 states have internal predecessors, (12328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:09:14,409 INFO L175 Difference]: Start difference. First operand has 287 places, 267 transitions, 757 flow. Second operand 45 states and 10533 transitions. [2022-11-18 20:09:14,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 359 transitions, 1485 flow [2022-11-18 20:09:14,414 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 359 transitions, 1419 flow, removed 26 selfloop flow, removed 7 redundant places. [2022-11-18 20:09:14,419 INFO L231 Difference]: Finished difference. Result has 333 places, 292 transitions, 1059 flow [2022-11-18 20:09:14,419 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=268, PETRI_DIFFERENCE_MINUEND_FLOW=723, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=1059, PETRI_PLACES=333, PETRI_TRANSITIONS=292} [2022-11-18 20:09:14,420 INFO L288 CegarLoopForPetriNet]: 248 programPoint places, 85 predicate places. [2022-11-18 20:09:14,420 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 292 transitions, 1059 flow [2022-11-18 20:09:14,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 234.7058823529412) internal successors, (7980), 34 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:09:14,423 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:09:14,423 INFO L209 CegarLoopForPetriNet]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:09:14,434 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f16cdb66-aaf6-4b62-9256-d78a20ed2c95/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-18 20:09:14,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f16cdb66-aaf6-4b62-9256-d78a20ed2c95/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:09:14,630 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-11-18 20:09:14,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:09:14,630 INFO L85 PathProgramCache]: Analyzing trace with hash 635060290, now seen corresponding path program 3 times [2022-11-18 20:09:14,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:09:14,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224443021] [2022-11-18 20:09:14,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:09:14,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:09:14,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:16,962 INFO L134 CoverageAnalysis]: Checked inductivity of 1910 backedges. 0 proven. 1905 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 20:09:16,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:09:16,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224443021] [2022-11-18 20:09:16,962 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224443021] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:09:16,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1773845406] [2022-11-18 20:09:16,962 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 20:09:16,965 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:09:16,965 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f16cdb66-aaf6-4b62-9256-d78a20ed2c95/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:09:16,966 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f16cdb66-aaf6-4b62-9256-d78a20ed2c95/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:09:16,983 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f16cdb66-aaf6-4b62-9256-d78a20ed2c95/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process