./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/06-symbeq_06-tricky_address1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e871e26a-9361-4831-974e-3d454bd61fe0/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e871e26a-9361-4831-974e-3d454bd61fe0/bin/uautomizer-vX5HgA9Q3a/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e871e26a-9361-4831-974e-3d454bd61fe0/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e871e26a-9361-4831-974e-3d454bd61fe0/bin/uautomizer-vX5HgA9Q3a/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/06-symbeq_06-tricky_address1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e871e26a-9361-4831-974e-3d454bd61fe0/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e871e26a-9361-4831-974e-3d454bd61fe0/bin/uautomizer-vX5HgA9Q3a --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 99f794c04b6feffb38c1e5c415a278bf34dda5287d389b184a9a7d818ab0b70e --- 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-b5237d8 [2022-11-21 13:48:03,167 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 13:48:03,169 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 13:48:03,187 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 13:48:03,188 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 13:48:03,189 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 13:48:03,190 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 13:48:03,192 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 13:48:03,193 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 13:48:03,194 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 13:48:03,195 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 13:48:03,196 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 13:48:03,196 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 13:48:03,197 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 13:48:03,198 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 13:48:03,199 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 13:48:03,200 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 13:48:03,201 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 13:48:03,203 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 13:48:03,205 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 13:48:03,206 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 13:48:03,207 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 13:48:03,209 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 13:48:03,209 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 13:48:03,213 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 13:48:03,214 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 13:48:03,214 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 13:48:03,215 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 13:48:03,215 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 13:48:03,216 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 13:48:03,217 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 13:48:03,218 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 13:48:03,218 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 13:48:03,219 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 13:48:03,220 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 13:48:03,220 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 13:48:03,221 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 13:48:03,221 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 13:48:03,222 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 13:48:03,222 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 13:48:03,223 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 13:48:03,228 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e871e26a-9361-4831-974e-3d454bd61fe0/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-21 13:48:03,256 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 13:48:03,260 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 13:48:03,261 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 13:48:03,261 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 13:48:03,262 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 13:48:03,262 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 13:48:03,263 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 13:48:03,263 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 13:48:03,263 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 13:48:03,264 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 13:48:03,265 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-21 13:48:03,265 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-21 13:48:03,265 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 13:48:03,265 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-21 13:48:03,266 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 13:48:03,266 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-21 13:48:03,266 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 13:48:03,266 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-21 13:48:03,266 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-21 13:48:03,267 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-21 13:48:03,267 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-21 13:48:03,267 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 13:48:03,267 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-21 13:48:03,268 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 13:48:03,268 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 13:48:03,268 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 13:48:03,268 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 13:48:03,268 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 13:48:03,269 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 13:48:03,269 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-21 13:48:03,270 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 13:48:03,270 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-21 13:48:03,270 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-21 13:48:03,270 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-21 13:48:03,271 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-21 13:48:03,271 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_e871e26a-9361-4831-974e-3d454bd61fe0/bin/uautomizer-vX5HgA9Q3a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e871e26a-9361-4831-974e-3d454bd61fe0/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 99f794c04b6feffb38c1e5c415a278bf34dda5287d389b184a9a7d818ab0b70e [2022-11-21 13:48:03,524 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 13:48:03,556 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 13:48:03,559 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 13:48:03,561 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 13:48:03,561 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 13:48:03,563 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e871e26a-9361-4831-974e-3d454bd61fe0/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/goblint-regression/06-symbeq_06-tricky_address1.i [2022-11-21 13:48:06,716 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 13:48:07,001 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 13:48:07,002 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e871e26a-9361-4831-974e-3d454bd61fe0/sv-benchmarks/c/goblint-regression/06-symbeq_06-tricky_address1.i [2022-11-21 13:48:07,020 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e871e26a-9361-4831-974e-3d454bd61fe0/bin/uautomizer-vX5HgA9Q3a/data/8ade80b4d/e9127352b63f4b0f82fe37f2b35ad6f1/FLAGb79cc80ea [2022-11-21 13:48:07,035 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e871e26a-9361-4831-974e-3d454bd61fe0/bin/uautomizer-vX5HgA9Q3a/data/8ade80b4d/e9127352b63f4b0f82fe37f2b35ad6f1 [2022-11-21 13:48:07,038 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 13:48:07,040 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 13:48:07,041 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 13:48:07,042 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 13:48:07,045 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 13:48:07,046 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:48:07" (1/1) ... [2022-11-21 13:48:07,047 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@514e6433 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:48:07, skipping insertion in model container [2022-11-21 13:48:07,048 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:48:07" (1/1) ... [2022-11-21 13:48:07,056 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 13:48:07,096 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 13:48:07,648 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 13:48:07,665 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 13:48:07,710 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 13:48:07,771 INFO L208 MainTranslator]: Completed translation [2022-11-21 13:48:07,771 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:48:07 WrapperNode [2022-11-21 13:48:07,771 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 13:48:07,772 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 13:48:07,772 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 13:48:07,773 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 13:48:07,781 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:48:07" (1/1) ... [2022-11-21 13:48:07,798 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:48:07" (1/1) ... [2022-11-21 13:48:07,824 INFO L138 Inliner]: procedures = 264, calls = 16, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 70 [2022-11-21 13:48:07,824 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 13:48:07,825 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 13:48:07,825 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 13:48:07,825 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 13:48:07,836 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:48:07" (1/1) ... [2022-11-21 13:48:07,836 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:48:07" (1/1) ... [2022-11-21 13:48:07,840 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:48:07" (1/1) ... [2022-11-21 13:48:07,840 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:48:07" (1/1) ... [2022-11-21 13:48:07,849 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:48:07" (1/1) ... [2022-11-21 13:48:07,853 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:48:07" (1/1) ... [2022-11-21 13:48:07,854 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:48:07" (1/1) ... [2022-11-21 13:48:07,856 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:48:07" (1/1) ... [2022-11-21 13:48:07,859 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 13:48:07,860 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 13:48:07,860 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 13:48:07,860 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 13:48:07,861 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:48:07" (1/1) ... [2022-11-21 13:48:07,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 13:48:07,881 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e871e26a-9361-4831-974e-3d454bd61fe0/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:48:07,895 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e871e26a-9361-4831-974e-3d454bd61fe0/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 13:48:07,922 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e871e26a-9361-4831-974e-3d454bd61fe0/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 13:48:07,959 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-21 13:48:07,959 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-21 13:48:07,960 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-21 13:48:07,960 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-21 13:48:07,961 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-21 13:48:07,961 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-21 13:48:07,961 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-21 13:48:07,962 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-21 13:48:07,963 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 13:48:07,963 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 13:48:07,964 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-21 13:48:08,254 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 13:48:08,256 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 13:48:08,495 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 13:48:08,503 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 13:48:08,503 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-21 13:48:08,505 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:48:08 BoogieIcfgContainer [2022-11-21 13:48:08,505 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 13:48:08,508 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 13:48:08,508 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 13:48:08,511 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 13:48:08,512 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 01:48:07" (1/3) ... [2022-11-21 13:48:08,512 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ea3748a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:48:08, skipping insertion in model container [2022-11-21 13:48:08,513 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:48:07" (2/3) ... [2022-11-21 13:48:08,513 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ea3748a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:48:08, skipping insertion in model container [2022-11-21 13:48:08,513 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:48:08" (3/3) ... [2022-11-21 13:48:08,515 INFO L112 eAbstractionObserver]: Analyzing ICFG 06-symbeq_06-tricky_address1.i [2022-11-21 13:48:08,525 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-21 13:48:08,537 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 13:48:08,538 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-11-21 13:48:08,538 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-21 13:48:08,598 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-21 13:48:08,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 87 places, 87 transitions, 179 flow [2022-11-21 13:48:08,698 INFO L130 PetriNetUnfolder]: 4/86 cut-off events. [2022-11-21 13:48:08,699 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-21 13:48:08,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 86 events. 4/86 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 72 event pairs, 0 based on Foata normal form. 0/76 useless extension candidates. Maximal degree in co-relation 47. Up to 2 conditions per place. [2022-11-21 13:48:08,704 INFO L82 GeneralOperation]: Start removeDead. Operand has 87 places, 87 transitions, 179 flow [2022-11-21 13:48:08,710 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 86 places, 86 transitions, 175 flow [2022-11-21 13:48:08,723 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 13:48:08,731 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;@7339f002, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 13:48:08,731 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2022-11-21 13:48:08,739 INFO L130 PetriNetUnfolder]: 1/19 cut-off events. [2022-11-21 13:48:08,739 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-21 13:48:08,740 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 13:48:08,740 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:48:08,741 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-11-21 13:48:08,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:48:08,747 INFO L85 PathProgramCache]: Analyzing trace with hash 1677450047, now seen corresponding path program 1 times [2022-11-21 13:48:08,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:48:08,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765956230] [2022-11-21 13:48:08,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:48:08,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:48:08,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:48:09,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:48:09,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:48:09,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765956230] [2022-11-21 13:48:09,123 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765956230] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:48:09,123 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:48:09,123 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 13:48:09,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963813536] [2022-11-21 13:48:09,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:48:09,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 13:48:09,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:48:09,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 13:48:09,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 13:48:09,192 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2022-11-21 13:48:09,198 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 86 transitions, 175 flow. Second operand has 4 states, 4 states have (on average 72.5) internal successors, (290), 4 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:48:09,199 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 13:48:09,199 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2022-11-21 13:48:09,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 13:48:09,342 INFO L130 PetriNetUnfolder]: 1/90 cut-off events. [2022-11-21 13:48:09,343 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-21 13:48:09,343 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115 conditions, 90 events. 1/90 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 72 event pairs, 0 based on Foata normal form. 2/83 useless extension candidates. Maximal degree in co-relation 62. Up to 14 conditions per place. [2022-11-21 13:48:09,345 INFO L137 encePairwiseOnDemand]: 77/87 looper letters, 16 selfloop transitions, 4 changer transitions 1/90 dead transitions. [2022-11-21 13:48:09,345 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 90 transitions, 223 flow [2022-11-21 13:48:09,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 13:48:09,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 13:48:09,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 382 transitions. [2022-11-21 13:48:09,361 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8781609195402299 [2022-11-21 13:48:09,362 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 382 transitions. [2022-11-21 13:48:09,363 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 382 transitions. [2022-11-21 13:48:09,365 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 13:48:09,368 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 382 transitions. [2022-11-21 13:48:09,373 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 76.4) internal successors, (382), 5 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:48:09,380 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 87.0) internal successors, (522), 6 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:48:09,380 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 87.0) internal successors, (522), 6 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:48:09,383 INFO L175 Difference]: Start difference. First operand has 86 places, 86 transitions, 175 flow. Second operand 5 states and 382 transitions. [2022-11-21 13:48:09,384 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 90 transitions, 223 flow [2022-11-21 13:48:09,387 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 90 transitions, 222 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-21 13:48:09,391 INFO L231 Difference]: Finished difference. Result has 92 places, 85 transitions, 198 flow [2022-11-21 13:48:09,393 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=198, PETRI_PLACES=92, PETRI_TRANSITIONS=85} [2022-11-21 13:48:09,397 INFO L288 CegarLoopForPetriNet]: 86 programPoint places, 6 predicate places. [2022-11-21 13:48:09,397 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 85 transitions, 198 flow [2022-11-21 13:48:09,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 72.5) internal successors, (290), 4 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:48:09,398 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 13:48:09,398 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:48:09,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-21 13:48:09,399 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-11-21 13:48:09,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:48:09,400 INFO L85 PathProgramCache]: Analyzing trace with hash 1414112580, now seen corresponding path program 1 times [2022-11-21 13:48:09,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:48:09,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064995649] [2022-11-21 13:48:09,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:48:09,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:48:09,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:48:09,502 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 13:48:09,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:48:09,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064995649] [2022-11-21 13:48:09,503 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064995649] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:48:09,504 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:48:09,504 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 13:48:09,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560348052] [2022-11-21 13:48:09,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:48:09,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 13:48:09,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:48:09,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 13:48:09,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 13:48:09,508 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2022-11-21 13:48:09,509 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 85 transitions, 198 flow. Second operand has 4 states, 4 states have (on average 74.25) internal successors, (297), 4 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:48:09,509 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 13:48:09,509 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2022-11-21 13:48:09,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 13:48:09,573 INFO L130 PetriNetUnfolder]: 1/88 cut-off events. [2022-11-21 13:48:09,573 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-21 13:48:09,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 127 conditions, 88 events. 1/88 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 68 event pairs, 0 based on Foata normal form. 1/84 useless extension candidates. Maximal degree in co-relation 86. Up to 7 conditions per place. [2022-11-21 13:48:09,575 INFO L137 encePairwiseOnDemand]: 81/87 looper letters, 8 selfloop transitions, 8 changer transitions 0/85 dead transitions. [2022-11-21 13:48:09,575 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 85 transitions, 228 flow [2022-11-21 13:48:09,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 13:48:09,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 13:48:09,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 369 transitions. [2022-11-21 13:48:09,579 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8482758620689655 [2022-11-21 13:48:09,579 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 369 transitions. [2022-11-21 13:48:09,579 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 369 transitions. [2022-11-21 13:48:09,580 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 13:48:09,580 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 369 transitions. [2022-11-21 13:48:09,585 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 73.8) internal successors, (369), 5 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:48:09,587 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 87.0) internal successors, (522), 6 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:48:09,588 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 87.0) internal successors, (522), 6 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:48:09,588 INFO L175 Difference]: Start difference. First operand has 92 places, 85 transitions, 198 flow. Second operand 5 states and 369 transitions. [2022-11-21 13:48:09,588 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 85 transitions, 228 flow [2022-11-21 13:48:09,590 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 85 transitions, 226 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-21 13:48:09,592 INFO L231 Difference]: Finished difference. Result has 94 places, 85 transitions, 216 flow [2022-11-21 13:48:09,592 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=216, PETRI_PLACES=94, PETRI_TRANSITIONS=85} [2022-11-21 13:48:09,593 INFO L288 CegarLoopForPetriNet]: 86 programPoint places, 8 predicate places. [2022-11-21 13:48:09,594 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 85 transitions, 216 flow [2022-11-21 13:48:09,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 74.25) internal successors, (297), 4 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:48:09,594 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 13:48:09,594 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:48:09,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-21 13:48:09,595 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-11-21 13:48:09,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:48:09,596 INFO L85 PathProgramCache]: Analyzing trace with hash 887817208, now seen corresponding path program 1 times [2022-11-21 13:48:09,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:48:09,597 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129845240] [2022-11-21 13:48:09,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:48:09,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:48:09,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:48:09,866 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:48:09,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:48:09,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129845240] [2022-11-21 13:48:09,867 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129845240] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 13:48:09,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1218857843] [2022-11-21 13:48:09,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:48:09,868 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:48:09,868 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e871e26a-9361-4831-974e-3d454bd61fe0/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:48:09,873 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e871e26a-9361-4831-974e-3d454bd61fe0/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 13:48:09,897 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e871e26a-9361-4831-974e-3d454bd61fe0/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-21 13:48:09,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:48:09,963 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-21 13:48:09,968 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:48:10,060 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:48:10,061 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 13:48:10,061 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1218857843] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:48:10,061 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 13:48:10,061 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-21 13:48:10,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672312965] [2022-11-21 13:48:10,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:48:10,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 13:48:10,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:48:10,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 13:48:10,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-21 13:48:10,065 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2022-11-21 13:48:10,066 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 85 transitions, 216 flow. Second operand has 6 states, 6 states have (on average 73.33333333333333) internal successors, (440), 6 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:48:10,066 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 13:48:10,066 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2022-11-21 13:48:10,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 13:48:10,180 INFO L130 PetriNetUnfolder]: 1/87 cut-off events. [2022-11-21 13:48:10,181 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2022-11-21 13:48:10,182 INFO L83 FinitePrefix]: Finished finitePrefix Result has 134 conditions, 87 events. 1/87 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 64 event pairs, 0 based on Foata normal form. 1/83 useless extension candidates. Maximal degree in co-relation 12. Up to 6 conditions per place. [2022-11-21 13:48:10,183 INFO L137 encePairwiseOnDemand]: 82/87 looper letters, 12 selfloop transitions, 6 changer transitions 0/87 dead transitions. [2022-11-21 13:48:10,183 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 87 transitions, 254 flow [2022-11-21 13:48:10,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 13:48:10,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-21 13:48:10,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 516 transitions. [2022-11-21 13:48:10,190 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8472906403940886 [2022-11-21 13:48:10,190 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 516 transitions. [2022-11-21 13:48:10,191 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 516 transitions. [2022-11-21 13:48:10,191 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 13:48:10,191 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 516 transitions. [2022-11-21 13:48:10,194 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 73.71428571428571) internal successors, (516), 7 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:48:10,197 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 87.0) internal successors, (696), 8 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:48:10,198 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 87.0) internal successors, (696), 8 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:48:10,198 INFO L175 Difference]: Start difference. First operand has 94 places, 85 transitions, 216 flow. Second operand 7 states and 516 transitions. [2022-11-21 13:48:10,198 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 87 transitions, 254 flow [2022-11-21 13:48:10,202 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 87 transitions, 242 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-21 13:48:10,206 INFO L231 Difference]: Finished difference. Result has 96 places, 84 transitions, 212 flow [2022-11-21 13:48:10,207 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=212, PETRI_PLACES=96, PETRI_TRANSITIONS=84} [2022-11-21 13:48:10,208 INFO L288 CegarLoopForPetriNet]: 86 programPoint places, 10 predicate places. [2022-11-21 13:48:10,208 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 84 transitions, 212 flow [2022-11-21 13:48:10,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 73.33333333333333) internal successors, (440), 6 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:48:10,209 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 13:48:10,210 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] [2022-11-21 13:48:10,238 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e871e26a-9361-4831-974e-3d454bd61fe0/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-21 13:48:10,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e871e26a-9361-4831-974e-3d454bd61fe0/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:48:10,439 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-11-21 13:48:10,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:48:10,440 INFO L85 PathProgramCache]: Analyzing trace with hash -988423937, now seen corresponding path program 1 times [2022-11-21 13:48:10,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:48:10,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754819871] [2022-11-21 13:48:10,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:48:10,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:48:10,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:48:10,615 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:48:10,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:48:10,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754819871] [2022-11-21 13:48:10,616 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754819871] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 13:48:10,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [363120897] [2022-11-21 13:48:10,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:48:10,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:48:10,617 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e871e26a-9361-4831-974e-3d454bd61fe0/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:48:10,622 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e871e26a-9361-4831-974e-3d454bd61fe0/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 13:48:10,641 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e871e26a-9361-4831-974e-3d454bd61fe0/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-21 13:48:10,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:48:10,707 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-21 13:48:10,708 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:48:10,741 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:48:10,741 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 13:48:10,783 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:48:10,783 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [363120897] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 13:48:10,784 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 13:48:10,784 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-21 13:48:10,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496190104] [2022-11-21 13:48:10,784 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 13:48:10,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-21 13:48:10,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:48:10,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-21 13:48:10,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-21 13:48:10,787 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2022-11-21 13:48:10,788 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 84 transitions, 212 flow. Second operand has 10 states, 10 states have (on average 73.7) internal successors, (737), 10 states have internal predecessors, (737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:48:10,788 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 13:48:10,789 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2022-11-21 13:48:10,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 13:48:10,915 INFO L130 PetriNetUnfolder]: 1/95 cut-off events. [2022-11-21 13:48:10,919 INFO L131 PetriNetUnfolder]: For 17/17 co-relation queries the response was YES. [2022-11-21 13:48:10,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 159 conditions, 95 events. 1/95 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 53 event pairs, 0 based on Foata normal form. 2/92 useless extension candidates. Maximal degree in co-relation 74. Up to 7 conditions per place. [2022-11-21 13:48:10,921 INFO L137 encePairwiseOnDemand]: 81/87 looper letters, 17 selfloop transitions, 9 changer transitions 0/95 dead transitions. [2022-11-21 13:48:10,921 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 95 transitions, 302 flow [2022-11-21 13:48:10,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-21 13:48:10,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-21 13:48:10,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 667 transitions. [2022-11-21 13:48:10,925 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8518518518518519 [2022-11-21 13:48:10,925 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 667 transitions. [2022-11-21 13:48:10,925 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 667 transitions. [2022-11-21 13:48:10,925 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 13:48:10,926 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 667 transitions. [2022-11-21 13:48:10,928 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.11111111111111) internal successors, (667), 9 states have internal predecessors, (667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:48:10,930 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:48:10,931 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:48:10,931 INFO L175 Difference]: Start difference. First operand has 96 places, 84 transitions, 212 flow. Second operand 9 states and 667 transitions. [2022-11-21 13:48:10,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 95 transitions, 302 flow [2022-11-21 13:48:10,934 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 95 transitions, 289 flow, removed 2 selfloop flow, removed 5 redundant places. [2022-11-21 13:48:10,936 INFO L231 Difference]: Finished difference. Result has 103 places, 88 transitions, 259 flow [2022-11-21 13:48:10,937 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=201, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=259, PETRI_PLACES=103, PETRI_TRANSITIONS=88} [2022-11-21 13:48:10,938 INFO L288 CegarLoopForPetriNet]: 86 programPoint places, 17 predicate places. [2022-11-21 13:48:10,939 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 88 transitions, 259 flow [2022-11-21 13:48:10,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 73.7) internal successors, (737), 10 states have internal predecessors, (737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:48:10,939 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 13:48:10,940 INFO L209 CegarLoopForPetriNet]: trace histogram [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] [2022-11-21 13:48:10,951 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e871e26a-9361-4831-974e-3d454bd61fe0/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-21 13:48:11,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e871e26a-9361-4831-974e-3d454bd61fe0/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:48:11,146 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-11-21 13:48:11,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:48:11,146 INFO L85 PathProgramCache]: Analyzing trace with hash -2045090657, now seen corresponding path program 2 times [2022-11-21 13:48:11,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:48:11,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918457039] [2022-11-21 13:48:11,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:48:11,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:48:11,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:48:11,383 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:48:11,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:48:11,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918457039] [2022-11-21 13:48:11,383 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918457039] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 13:48:11,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [513034692] [2022-11-21 13:48:11,384 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 13:48:11,384 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:48:11,384 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e871e26a-9361-4831-974e-3d454bd61fe0/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:48:11,386 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e871e26a-9361-4831-974e-3d454bd61fe0/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 13:48:11,405 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e871e26a-9361-4831-974e-3d454bd61fe0/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-21 13:48:11,481 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-21 13:48:11,481 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 13:48:11,482 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-21 13:48:11,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:48:11,582 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2022-11-21 13:48:11,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 13:48:11,934 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2022-11-21 13:48:11,977 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2022-11-21 13:48:12,016 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-21 13:48:12,016 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 13:48:12,016 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [513034692] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:48:12,016 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 13:48:12,017 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 16 [2022-11-21 13:48:12,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283732196] [2022-11-21 13:48:12,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:48:12,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-21 13:48:12,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:48:12,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-21 13:48:12,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2022-11-21 13:48:12,020 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 87 [2022-11-21 13:48:12,021 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 88 transitions, 259 flow. Second operand has 9 states, 9 states have (on average 61.333333333333336) internal successors, (552), 9 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:48:12,021 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 13:48:12,021 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 87 [2022-11-21 13:48:12,021 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 13:48:12,256 INFO L130 PetriNetUnfolder]: 37/230 cut-off events. [2022-11-21 13:48:12,257 INFO L131 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2022-11-21 13:48:12,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 389 conditions, 230 events. 37/230 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 903 event pairs, 2 based on Foata normal form. 0/210 useless extension candidates. Maximal degree in co-relation 307. Up to 40 conditions per place. [2022-11-21 13:48:12,259 INFO L137 encePairwiseOnDemand]: 75/87 looper letters, 30 selfloop transitions, 14 changer transitions 9/117 dead transitions. [2022-11-21 13:48:12,259 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 117 transitions, 423 flow [2022-11-21 13:48:12,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-21 13:48:12,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-21 13:48:12,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 715 transitions. [2022-11-21 13:48:12,263 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7471264367816092 [2022-11-21 13:48:12,263 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 715 transitions. [2022-11-21 13:48:12,263 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 715 transitions. [2022-11-21 13:48:12,264 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 13:48:12,264 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 715 transitions. [2022-11-21 13:48:12,266 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 65.0) internal successors, (715), 11 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:48:12,268 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 87.0) internal successors, (1044), 12 states have internal predecessors, (1044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:48:12,269 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 87.0) internal successors, (1044), 12 states have internal predecessors, (1044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:48:12,269 INFO L175 Difference]: Start difference. First operand has 103 places, 88 transitions, 259 flow. Second operand 11 states and 715 transitions. [2022-11-21 13:48:12,269 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 117 transitions, 423 flow [2022-11-21 13:48:12,272 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 117 transitions, 409 flow, removed 3 selfloop flow, removed 4 redundant places. [2022-11-21 13:48:12,274 INFO L231 Difference]: Finished difference. Result has 113 places, 94 transitions, 310 flow [2022-11-21 13:48:12,274 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=245, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=310, PETRI_PLACES=113, PETRI_TRANSITIONS=94} [2022-11-21 13:48:12,275 INFO L288 CegarLoopForPetriNet]: 86 programPoint places, 27 predicate places. [2022-11-21 13:48:12,275 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 94 transitions, 310 flow [2022-11-21 13:48:12,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 61.333333333333336) internal successors, (552), 9 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:48:12,276 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 13:48:12,276 INFO L209 CegarLoopForPetriNet]: trace histogram [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] [2022-11-21 13:48:12,286 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e871e26a-9361-4831-974e-3d454bd61fe0/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-21 13:48:12,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e871e26a-9361-4831-974e-3d454bd61fe0/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:48:12,482 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-11-21 13:48:12,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:48:12,482 INFO L85 PathProgramCache]: Analyzing trace with hash 1026699263, now seen corresponding path program 1 times [2022-11-21 13:48:12,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:48:12,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512077057] [2022-11-21 13:48:12,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:48:12,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:48:12,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:48:12,698 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:48:12,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:48:12,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512077057] [2022-11-21 13:48:12,699 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512077057] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 13:48:12,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1543386624] [2022-11-21 13:48:12,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:48:12,700 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:48:12,701 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e871e26a-9361-4831-974e-3d454bd61fe0/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:48:12,702 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e871e26a-9361-4831-974e-3d454bd61fe0/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 13:48:12,725 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e871e26a-9361-4831-974e-3d454bd61fe0/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-21 13:48:12,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:48:12,809 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-21 13:48:12,817 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:48:12,895 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:48:12,898 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 13:48:13,029 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:48:13,029 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1543386624] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 13:48:13,029 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 13:48:13,030 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-11-21 13:48:13,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672809569] [2022-11-21 13:48:13,030 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 13:48:13,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-21 13:48:13,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:48:13,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-21 13:48:13,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2022-11-21 13:48:13,034 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2022-11-21 13:48:13,036 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 94 transitions, 310 flow. Second operand has 18 states, 18 states have (on average 74.05555555555556) internal successors, (1333), 18 states have internal predecessors, (1333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:48:13,036 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 13:48:13,036 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2022-11-21 13:48:13,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 13:48:13,342 INFO L130 PetriNetUnfolder]: 2/141 cut-off events. [2022-11-21 13:48:13,343 INFO L131 PetriNetUnfolder]: For 70/72 co-relation queries the response was YES. [2022-11-21 13:48:13,343 INFO L83 FinitePrefix]: Finished finitePrefix Result has 316 conditions, 141 events. 2/141 cut-off events. For 70/72 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 119 event pairs, 0 based on Foata normal form. 4/142 useless extension candidates. Maximal degree in co-relation 275. Up to 9 conditions per place. [2022-11-21 13:48:13,344 INFO L137 encePairwiseOnDemand]: 81/87 looper letters, 33 selfloop transitions, 21 changer transitions 0/129 dead transitions. [2022-11-21 13:48:13,344 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 129 transitions, 580 flow [2022-11-21 13:48:13,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-21 13:48:13,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-21 13:48:13,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1549 transitions. [2022-11-21 13:48:13,349 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8478379857690203 [2022-11-21 13:48:13,350 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1549 transitions. [2022-11-21 13:48:13,350 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1549 transitions. [2022-11-21 13:48:13,351 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 13:48:13,351 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1549 transitions. [2022-11-21 13:48:13,356 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 73.76190476190476) internal successors, (1549), 21 states have internal predecessors, (1549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:48:13,360 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 87.0) internal successors, (1914), 22 states have internal predecessors, (1914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:48:13,361 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 87.0) internal successors, (1914), 22 states have internal predecessors, (1914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:48:13,362 INFO L175 Difference]: Start difference. First operand has 113 places, 94 transitions, 310 flow. Second operand 21 states and 1549 transitions. [2022-11-21 13:48:13,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 129 transitions, 580 flow [2022-11-21 13:48:13,365 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 129 transitions, 568 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-21 13:48:13,368 INFO L231 Difference]: Finished difference. Result has 133 places, 107 transitions, 462 flow [2022-11-21 13:48:13,368 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=298, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=462, PETRI_PLACES=133, PETRI_TRANSITIONS=107} [2022-11-21 13:48:13,369 INFO L288 CegarLoopForPetriNet]: 86 programPoint places, 47 predicate places. [2022-11-21 13:48:13,369 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 107 transitions, 462 flow [2022-11-21 13:48:13,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 74.05555555555556) internal successors, (1333), 18 states have internal predecessors, (1333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:48:13,370 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 13:48:13,371 INFO L209 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:48:13,382 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e871e26a-9361-4831-974e-3d454bd61fe0/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-21 13:48:13,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e871e26a-9361-4831-974e-3d454bd61fe0/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-21 13:48:13,577 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-11-21 13:48:13,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:48:13,577 INFO L85 PathProgramCache]: Analyzing trace with hash -1125676865, now seen corresponding path program 2 times [2022-11-21 13:48:13,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:48:13,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765535594] [2022-11-21 13:48:13,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:48:13,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:48:13,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:48:13,941 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:48:13,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:48:13,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765535594] [2022-11-21 13:48:13,942 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765535594] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 13:48:13,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [588517245] [2022-11-21 13:48:13,945 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 13:48:13,945 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:48:13,945 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e871e26a-9361-4831-974e-3d454bd61fe0/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:48:13,946 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e871e26a-9361-4831-974e-3d454bd61fe0/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 13:48:13,982 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e871e26a-9361-4831-974e-3d454bd61fe0/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-21 13:48:14,041 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-21 13:48:14,041 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 13:48:14,042 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-21 13:48:14,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:48:14,094 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2022-11-21 13:48:14,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 13:48:14,580 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2022-11-21 13:48:14,644 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2022-11-21 13:48:14,700 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2022-11-21 13:48:14,700 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 13:48:14,700 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [588517245] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:48:14,701 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 13:48:14,701 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [17] total 24 [2022-11-21 13:48:14,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263082853] [2022-11-21 13:48:14,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:48:14,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-21 13:48:14,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:48:14,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-21 13:48:14,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=453, Unknown=0, NotChecked=0, Total=552 [2022-11-21 13:48:14,704 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 87 [2022-11-21 13:48:14,705 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 107 transitions, 462 flow. Second operand has 9 states, 9 states have (on average 61.44444444444444) internal successors, (553), 9 states have internal predecessors, (553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:48:14,705 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 13:48:14,705 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 87 [2022-11-21 13:48:14,706 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 13:48:15,018 INFO L130 PetriNetUnfolder]: 27/229 cut-off events. [2022-11-21 13:48:15,018 INFO L131 PetriNetUnfolder]: For 163/167 co-relation queries the response was YES. [2022-11-21 13:48:15,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 486 conditions, 229 events. 27/229 cut-off events. For 163/167 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 725 event pairs, 2 based on Foata normal form. 6/221 useless extension candidates. Maximal degree in co-relation 365. Up to 29 conditions per place. [2022-11-21 13:48:15,023 INFO L137 encePairwiseOnDemand]: 75/87 looper letters, 27 selfloop transitions, 11 changer transitions 7/121 dead transitions. [2022-11-21 13:48:15,024 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 121 transitions, 576 flow [2022-11-21 13:48:15,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-21 13:48:15,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-21 13:48:15,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 706 transitions. [2022-11-21 13:48:15,027 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7377220480668757 [2022-11-21 13:48:15,027 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 706 transitions. [2022-11-21 13:48:15,027 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 706 transitions. [2022-11-21 13:48:15,028 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 13:48:15,028 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 706 transitions. [2022-11-21 13:48:15,030 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 64.18181818181819) internal successors, (706), 11 states have internal predecessors, (706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:48:15,033 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 87.0) internal successors, (1044), 12 states have internal predecessors, (1044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:48:15,033 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 87.0) internal successors, (1044), 12 states have internal predecessors, (1044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:48:15,033 INFO L175 Difference]: Start difference. First operand has 133 places, 107 transitions, 462 flow. Second operand 11 states and 706 transitions. [2022-11-21 13:48:15,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 121 transitions, 576 flow [2022-11-21 13:48:15,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 121 transitions, 527 flow, removed 15 selfloop flow, removed 8 redundant places. [2022-11-21 13:48:15,040 INFO L231 Difference]: Finished difference. Result has 135 places, 102 transitions, 416 flow [2022-11-21 13:48:15,040 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=409, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=416, PETRI_PLACES=135, PETRI_TRANSITIONS=102} [2022-11-21 13:48:15,042 INFO L288 CegarLoopForPetriNet]: 86 programPoint places, 49 predicate places. [2022-11-21 13:48:15,042 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 102 transitions, 416 flow [2022-11-21 13:48:15,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 61.44444444444444) internal successors, (553), 9 states have internal predecessors, (553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:48:15,043 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 13:48:15,043 INFO L209 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:48:15,060 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e871e26a-9361-4831-974e-3d454bd61fe0/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-21 13:48:15,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e871e26a-9361-4831-974e-3d454bd61fe0/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:48:15,250 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-11-21 13:48:15,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:48:15,250 INFO L85 PathProgramCache]: Analyzing trace with hash -1240098145, now seen corresponding path program 1 times [2022-11-21 13:48:15,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:48:15,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402089865] [2022-11-21 13:48:15,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:48:15,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:48:15,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:48:15,661 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:48:15,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:48:15,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402089865] [2022-11-21 13:48:15,661 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402089865] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 13:48:15,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [93884927] [2022-11-21 13:48:15,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:48:15,663 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:48:15,663 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e871e26a-9361-4831-974e-3d454bd61fe0/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:48:15,670 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e871e26a-9361-4831-974e-3d454bd61fe0/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 13:48:15,697 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e871e26a-9361-4831-974e-3d454bd61fe0/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-21 13:48:15,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:48:15,776 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-21 13:48:15,778 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:48:15,905 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:48:15,906 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 13:48:16,178 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:48:16,178 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [93884927] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 13:48:16,179 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 13:48:16,179 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 23 [2022-11-21 13:48:16,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727448247] [2022-11-21 13:48:16,179 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 13:48:16,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-21 13:48:16,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:48:16,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-21 13:48:16,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2022-11-21 13:48:16,183 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2022-11-21 13:48:16,185 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 102 transitions, 416 flow. Second operand has 23 states, 23 states have (on average 74.30434782608695) internal successors, (1709), 23 states have internal predecessors, (1709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:48:16,185 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 13:48:16,186 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2022-11-21 13:48:16,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 13:48:16,602 INFO L130 PetriNetUnfolder]: 1/147 cut-off events. [2022-11-21 13:48:16,602 INFO L131 PetriNetUnfolder]: For 189/189 co-relation queries the response was YES. [2022-11-21 13:48:16,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 402 conditions, 147 events. 1/147 cut-off events. For 189/189 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 54 event pairs, 0 based on Foata normal form. 3/148 useless extension candidates. Maximal degree in co-relation 366. Up to 12 conditions per place. [2022-11-21 13:48:16,604 INFO L137 encePairwiseOnDemand]: 81/87 looper letters, 45 selfloop transitions, 30 changer transitions 0/145 dead transitions. [2022-11-21 13:48:16,604 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 145 transitions, 764 flow [2022-11-21 13:48:16,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-21 13:48:16,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-11-21 13:48:16,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 2208 transitions. [2022-11-21 13:48:16,609 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8459770114942529 [2022-11-21 13:48:16,609 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 2208 transitions. [2022-11-21 13:48:16,609 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 2208 transitions. [2022-11-21 13:48:16,611 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 13:48:16,611 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 2208 transitions. [2022-11-21 13:48:16,616 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 73.6) internal successors, (2208), 30 states have internal predecessors, (2208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:48:16,622 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 87.0) internal successors, (2697), 31 states have internal predecessors, (2697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:48:16,623 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 87.0) internal successors, (2697), 31 states have internal predecessors, (2697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:48:16,624 INFO L175 Difference]: Start difference. First operand has 135 places, 102 transitions, 416 flow. Second operand 30 states and 2208 transitions. [2022-11-21 13:48:16,624 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 145 transitions, 764 flow [2022-11-21 13:48:16,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 145 transitions, 739 flow, removed 2 selfloop flow, removed 10 redundant places. [2022-11-21 13:48:16,630 INFO L231 Difference]: Finished difference. Result has 155 places, 112 transitions, 557 flow [2022-11-21 13:48:16,630 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=391, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=557, PETRI_PLACES=155, PETRI_TRANSITIONS=112} [2022-11-21 13:48:16,631 INFO L288 CegarLoopForPetriNet]: 86 programPoint places, 69 predicate places. [2022-11-21 13:48:16,631 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 112 transitions, 557 flow [2022-11-21 13:48:16,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 74.30434782608695) internal successors, (1709), 23 states have internal predecessors, (1709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:48:16,632 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 13:48:16,632 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:48:16,649 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e871e26a-9361-4831-974e-3d454bd61fe0/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-21 13:48:16,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e871e26a-9361-4831-974e-3d454bd61fe0/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:48:16,848 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-11-21 13:48:16,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:48:16,849 INFO L85 PathProgramCache]: Analyzing trace with hash -2104647484, now seen corresponding path program 2 times [2022-11-21 13:48:16,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:48:16,851 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458037088] [2022-11-21 13:48:16,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:48:16,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:48:16,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:48:17,346 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-21 13:48:17,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:48:17,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458037088] [2022-11-21 13:48:17,347 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458037088] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:48:17,347 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:48:17,347 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-21 13:48:17,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242287452] [2022-11-21 13:48:17,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:48:17,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-21 13:48:17,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:48:17,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-21 13:48:17,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-21 13:48:17,350 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 87 [2022-11-21 13:48:17,351 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 112 transitions, 557 flow. Second operand has 10 states, 10 states have (on average 59.3) internal successors, (593), 10 states have internal predecessors, (593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:48:17,351 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 13:48:17,351 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 87 [2022-11-21 13:48:17,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 13:48:17,641 INFO L130 PetriNetUnfolder]: 58/306 cut-off events. [2022-11-21 13:48:17,641 INFO L131 PetriNetUnfolder]: For 237/237 co-relation queries the response was YES. [2022-11-21 13:48:17,642 INFO L83 FinitePrefix]: Finished finitePrefix Result has 702 conditions, 306 events. 58/306 cut-off events. For 237/237 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 957 event pairs, 24 based on Foata normal form. 0/296 useless extension candidates. Maximal degree in co-relation 424. Up to 73 conditions per place. [2022-11-21 13:48:17,643 INFO L137 encePairwiseOnDemand]: 74/87 looper letters, 30 selfloop transitions, 12 changer transitions 14/141 dead transitions. [2022-11-21 13:48:17,643 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 141 transitions, 743 flow [2022-11-21 13:48:17,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-21 13:48:17,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-21 13:48:17,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 756 transitions. [2022-11-21 13:48:17,648 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7241379310344828 [2022-11-21 13:48:17,648 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 756 transitions. [2022-11-21 13:48:17,648 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 756 transitions. [2022-11-21 13:48:17,649 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 13:48:17,649 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 756 transitions. [2022-11-21 13:48:17,652 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 63.0) internal successors, (756), 12 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:48:17,655 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 87.0) internal successors, (1131), 13 states have internal predecessors, (1131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:48:17,655 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 87.0) internal successors, (1131), 13 states have internal predecessors, (1131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:48:17,655 INFO L175 Difference]: Start difference. First operand has 155 places, 112 transitions, 557 flow. Second operand 12 states and 756 transitions. [2022-11-21 13:48:17,656 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 141 transitions, 743 flow [2022-11-21 13:48:17,660 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 141 transitions, 697 flow, removed 5 selfloop flow, removed 18 redundant places. [2022-11-21 13:48:17,662 INFO L231 Difference]: Finished difference. Result has 154 places, 116 transitions, 572 flow [2022-11-21 13:48:17,662 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=511, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=572, PETRI_PLACES=154, PETRI_TRANSITIONS=116} [2022-11-21 13:48:17,663 INFO L288 CegarLoopForPetriNet]: 86 programPoint places, 68 predicate places. [2022-11-21 13:48:17,664 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 116 transitions, 572 flow [2022-11-21 13:48:17,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 59.3) internal successors, (593), 10 states have internal predecessors, (593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:48:17,664 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 13:48:17,664 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:48:17,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-21 13:48:17,665 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-11-21 13:48:17,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:48:17,665 INFO L85 PathProgramCache]: Analyzing trace with hash -538601876, now seen corresponding path program 1 times [2022-11-21 13:48:17,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:48:17,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831016511] [2022-11-21 13:48:17,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:48:17,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:48:17,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:48:18,632 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-21 13:48:18,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:48:18,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831016511] [2022-11-21 13:48:18,633 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831016511] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:48:18,633 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:48:18,634 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-21 13:48:18,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136426712] [2022-11-21 13:48:18,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:48:18,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-21 13:48:18,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:48:18,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-21 13:48:18,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2022-11-21 13:48:18,640 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 87 [2022-11-21 13:48:18,641 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 116 transitions, 572 flow. Second operand has 13 states, 13 states have (on average 52.46153846153846) internal successors, (682), 13 states have internal predecessors, (682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:48:18,641 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 13:48:18,641 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 87 [2022-11-21 13:48:18,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 13:48:19,365 INFO L130 PetriNetUnfolder]: 90/353 cut-off events. [2022-11-21 13:48:19,365 INFO L131 PetriNetUnfolder]: For 326/333 co-relation queries the response was YES. [2022-11-21 13:48:19,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 927 conditions, 353 events. 90/353 cut-off events. For 326/333 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1125 event pairs, 0 based on Foata normal form. 10/360 useless extension candidates. Maximal degree in co-relation 783. Up to 44 conditions per place. [2022-11-21 13:48:19,368 INFO L137 encePairwiseOnDemand]: 73/87 looper letters, 59 selfloop transitions, 21 changer transitions 20/177 dead transitions. [2022-11-21 13:48:19,369 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 177 transitions, 947 flow [2022-11-21 13:48:19,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-21 13:48:19,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2022-11-21 13:48:19,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 1274 transitions. [2022-11-21 13:48:19,373 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6366816591704147 [2022-11-21 13:48:19,373 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 1274 transitions. [2022-11-21 13:48:19,373 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 1274 transitions. [2022-11-21 13:48:19,375 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 13:48:19,376 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 1274 transitions. [2022-11-21 13:48:19,384 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 55.391304347826086) internal successors, (1274), 23 states have internal predecessors, (1274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:48:19,390 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 87.0) internal successors, (2088), 24 states have internal predecessors, (2088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:48:19,391 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 87.0) internal successors, (2088), 24 states have internal predecessors, (2088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:48:19,392 INFO L175 Difference]: Start difference. First operand has 154 places, 116 transitions, 572 flow. Second operand 23 states and 1274 transitions. [2022-11-21 13:48:19,392 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 177 transitions, 947 flow [2022-11-21 13:48:19,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 177 transitions, 927 flow, removed 2 selfloop flow, removed 8 redundant places. [2022-11-21 13:48:19,402 INFO L231 Difference]: Finished difference. Result has 166 places, 119 transitions, 609 flow [2022-11-21 13:48:19,403 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=546, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=609, PETRI_PLACES=166, PETRI_TRANSITIONS=119} [2022-11-21 13:48:19,405 INFO L288 CegarLoopForPetriNet]: 86 programPoint places, 80 predicate places. [2022-11-21 13:48:19,405 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 119 transitions, 609 flow [2022-11-21 13:48:19,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 52.46153846153846) internal successors, (682), 13 states have internal predecessors, (682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:48:19,406 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 13:48:19,406 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:48:19,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-21 13:48:19,407 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-11-21 13:48:19,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:48:19,407 INFO L85 PathProgramCache]: Analyzing trace with hash -156822107, now seen corresponding path program 1 times [2022-11-21 13:48:19,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:48:19,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394573577] [2022-11-21 13:48:19,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:48:19,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:48:19,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:48:20,223 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-21 13:48:20,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:48:20,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394573577] [2022-11-21 13:48:20,224 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394573577] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:48:20,224 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:48:20,224 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-21 13:48:20,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472349549] [2022-11-21 13:48:20,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:48:20,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-21 13:48:20,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:48:20,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-21 13:48:20,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2022-11-21 13:48:20,226 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 87 [2022-11-21 13:48:20,227 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 119 transitions, 609 flow. Second operand has 13 states, 13 states have (on average 50.61538461538461) internal successors, (658), 13 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:48:20,227 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 13:48:20,227 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 87 [2022-11-21 13:48:20,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 13:48:20,899 INFO L130 PetriNetUnfolder]: 71/325 cut-off events. [2022-11-21 13:48:20,899 INFO L131 PetriNetUnfolder]: For 374/395 co-relation queries the response was YES. [2022-11-21 13:48:20,900 INFO L83 FinitePrefix]: Finished finitePrefix Result has 845 conditions, 325 events. 71/325 cut-off events. For 374/395 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1003 event pairs, 0 based on Foata normal form. 16/338 useless extension candidates. Maximal degree in co-relation 635. Up to 61 conditions per place. [2022-11-21 13:48:20,902 INFO L137 encePairwiseOnDemand]: 72/87 looper letters, 52 selfloop transitions, 25 changer transitions 5/157 dead transitions. [2022-11-21 13:48:20,902 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 157 transitions, 889 flow [2022-11-21 13:48:20,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-21 13:48:20,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-21 13:48:20,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1113 transitions. [2022-11-21 13:48:20,905 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6091954022988506 [2022-11-21 13:48:20,905 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1113 transitions. [2022-11-21 13:48:20,905 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1113 transitions. [2022-11-21 13:48:20,906 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 13:48:20,906 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1113 transitions. [2022-11-21 13:48:20,908 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 53.0) internal successors, (1113), 21 states have internal predecessors, (1113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:48:20,911 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 87.0) internal successors, (1914), 22 states have internal predecessors, (1914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:48:20,912 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 87.0) internal successors, (1914), 22 states have internal predecessors, (1914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:48:20,912 INFO L175 Difference]: Start difference. First operand has 166 places, 119 transitions, 609 flow. Second operand 21 states and 1113 transitions. [2022-11-21 13:48:20,912 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 157 transitions, 889 flow [2022-11-21 13:48:20,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 157 transitions, 801 flow, removed 9 selfloop flow, removed 18 redundant places. [2022-11-21 13:48:20,920 INFO L231 Difference]: Finished difference. Result has 163 places, 122 transitions, 604 flow [2022-11-21 13:48:20,920 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=542, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=604, PETRI_PLACES=163, PETRI_TRANSITIONS=122} [2022-11-21 13:48:20,921 INFO L288 CegarLoopForPetriNet]: 86 programPoint places, 77 predicate places. [2022-11-21 13:48:20,921 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 122 transitions, 604 flow [2022-11-21 13:48:20,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 50.61538461538461) internal successors, (658), 13 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:48:20,922 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 13:48:20,922 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:48:20,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-21 13:48:20,922 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-11-21 13:48:20,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:48:20,923 INFO L85 PathProgramCache]: Analyzing trace with hash 483211269, now seen corresponding path program 1 times [2022-11-21 13:48:20,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:48:20,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157218915] [2022-11-21 13:48:20,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:48:20,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:48:20,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:48:21,642 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-21 13:48:21,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:48:21,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157218915] [2022-11-21 13:48:21,643 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157218915] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:48:21,643 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:48:21,643 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-21 13:48:21,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849923817] [2022-11-21 13:48:21,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:48:21,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-21 13:48:21,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:48:21,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-21 13:48:21,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2022-11-21 13:48:21,646 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 87 [2022-11-21 13:48:21,647 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 122 transitions, 604 flow. Second operand has 13 states, 13 states have (on average 52.53846153846154) internal successors, (683), 13 states have internal predecessors, (683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:48:21,647 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 13:48:21,647 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 87 [2022-11-21 13:48:21,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 13:48:22,372 INFO L130 PetriNetUnfolder]: 66/291 cut-off events. [2022-11-21 13:48:22,372 INFO L131 PetriNetUnfolder]: For 286/307 co-relation queries the response was YES. [2022-11-21 13:48:22,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 755 conditions, 291 events. 66/291 cut-off events. For 286/307 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 782 event pairs, 5 based on Foata normal form. 18/306 useless extension candidates. Maximal degree in co-relation 585. Up to 50 conditions per place. [2022-11-21 13:48:22,374 INFO L137 encePairwiseOnDemand]: 73/87 looper letters, 27 selfloop transitions, 12 changer transitions 47/159 dead transitions. [2022-11-21 13:48:22,375 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 159 transitions, 865 flow [2022-11-21 13:48:22,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-21 13:48:22,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-21 13:48:22,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 999 transitions. [2022-11-21 13:48:22,377 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6379310344827587 [2022-11-21 13:48:22,377 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 999 transitions. [2022-11-21 13:48:22,377 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 999 transitions. [2022-11-21 13:48:22,378 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 13:48:22,378 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 999 transitions. [2022-11-21 13:48:22,380 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 55.5) internal successors, (999), 18 states have internal predecessors, (999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:48:22,383 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 87.0) internal successors, (1653), 19 states have internal predecessors, (1653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:48:22,384 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 87.0) internal successors, (1653), 19 states have internal predecessors, (1653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:48:22,384 INFO L175 Difference]: Start difference. First operand has 163 places, 122 transitions, 604 flow. Second operand 18 states and 999 transitions. [2022-11-21 13:48:22,384 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 159 transitions, 865 flow [2022-11-21 13:48:22,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 159 transitions, 790 flow, removed 6 selfloop flow, removed 17 redundant places. [2022-11-21 13:48:22,390 INFO L231 Difference]: Finished difference. Result has 162 places, 100 transitions, 508 flow [2022-11-21 13:48:22,391 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=543, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=508, PETRI_PLACES=162, PETRI_TRANSITIONS=100} [2022-11-21 13:48:22,391 INFO L288 CegarLoopForPetriNet]: 86 programPoint places, 76 predicate places. [2022-11-21 13:48:22,391 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 100 transitions, 508 flow [2022-11-21 13:48:22,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 52.53846153846154) internal successors, (683), 13 states have internal predecessors, (683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:48:22,392 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 13:48:22,392 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:48:22,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-21 13:48:22,393 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-11-21 13:48:22,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:48:22,393 INFO L85 PathProgramCache]: Analyzing trace with hash -566517831, now seen corresponding path program 1 times [2022-11-21 13:48:22,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:48:22,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789641078] [2022-11-21 13:48:22,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:48:22,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:48:22,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:48:23,200 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-21 13:48:23,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:48:23,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789641078] [2022-11-21 13:48:23,201 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789641078] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:48:23,201 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:48:23,201 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-21 13:48:23,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048284397] [2022-11-21 13:48:23,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:48:23,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-21 13:48:23,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:48:23,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-21 13:48:23,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2022-11-21 13:48:23,207 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 87 [2022-11-21 13:48:23,208 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 100 transitions, 508 flow. Second operand has 13 states, 13 states have (on average 50.69230769230769) internal successors, (659), 13 states have internal predecessors, (659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:48:23,208 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 13:48:23,208 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 87 [2022-11-21 13:48:23,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 13:48:23,713 INFO L130 PetriNetUnfolder]: 20/169 cut-off events. [2022-11-21 13:48:23,713 INFO L131 PetriNetUnfolder]: For 234/234 co-relation queries the response was YES. [2022-11-21 13:48:23,713 INFO L83 FinitePrefix]: Finished finitePrefix Result has 457 conditions, 169 events. 20/169 cut-off events. For 234/234 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 151 event pairs, 0 based on Foata normal form. 4/172 useless extension candidates. Maximal degree in co-relation 256. Up to 14 conditions per place. [2022-11-21 13:48:23,714 INFO L137 encePairwiseOnDemand]: 75/87 looper letters, 0 selfloop transitions, 0 changer transitions 109/109 dead transitions. [2022-11-21 13:48:23,714 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 109 transitions, 605 flow [2022-11-21 13:48:23,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-21 13:48:23,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-21 13:48:23,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 775 transitions. [2022-11-21 13:48:23,717 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5938697318007663 [2022-11-21 13:48:23,717 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 775 transitions. [2022-11-21 13:48:23,717 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 775 transitions. [2022-11-21 13:48:23,718 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 13:48:23,718 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 775 transitions. [2022-11-21 13:48:23,720 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 51.666666666666664) internal successors, (775), 15 states have internal predecessors, (775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:48:23,723 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 87.0) internal successors, (1392), 16 states have internal predecessors, (1392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:48:23,723 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 87.0) internal successors, (1392), 16 states have internal predecessors, (1392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:48:23,724 INFO L175 Difference]: Start difference. First operand has 162 places, 100 transitions, 508 flow. Second operand 15 states and 775 transitions. [2022-11-21 13:48:23,724 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 109 transitions, 605 flow [2022-11-21 13:48:23,728 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 109 transitions, 571 flow, removed 0 selfloop flow, removed 14 redundant places. [2022-11-21 13:48:23,729 INFO L231 Difference]: Finished difference. Result has 136 places, 0 transitions, 0 flow [2022-11-21 13:48:23,730 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=475, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=0, PETRI_PLACES=136, PETRI_TRANSITIONS=0} [2022-11-21 13:48:23,731 INFO L288 CegarLoopForPetriNet]: 86 programPoint places, 50 predicate places. [2022-11-21 13:48:23,731 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 0 transitions, 0 flow [2022-11-21 13:48:23,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 50.69230769230769) internal successors, (659), 13 states have internal predecessors, (659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:48:23,736 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 9 remaining) [2022-11-21 13:48:23,737 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 9 remaining) [2022-11-21 13:48:23,737 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 9 remaining) [2022-11-21 13:48:23,737 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 9 remaining) [2022-11-21 13:48:23,737 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 9 remaining) [2022-11-21 13:48:23,738 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 9 remaining) [2022-11-21 13:48:23,738 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 9 remaining) [2022-11-21 13:48:23,738 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 9 remaining) [2022-11-21 13:48:23,739 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 9 remaining) [2022-11-21 13:48:23,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-21 13:48:23,739 INFO L444 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:48:23,746 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-21 13:48:23,746 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-21 13:48:23,751 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 01:48:23 BasicIcfg [2022-11-21 13:48:23,752 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-21 13:48:23,752 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-21 13:48:23,752 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-21 13:48:23,753 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-21 13:48:23,753 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:48:08" (3/4) ... [2022-11-21 13:48:23,756 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-21 13:48:23,762 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2022-11-21 13:48:23,767 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2022-11-21 13:48:23,768 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-11-21 13:48:23,768 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-21 13:48:23,810 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e871e26a-9361-4831-974e-3d454bd61fe0/bin/uautomizer-vX5HgA9Q3a/witness.graphml [2022-11-21 13:48:23,811 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-21 13:48:23,812 INFO L158 Benchmark]: Toolchain (without parser) took 16771.95ms. Allocated memory was 176.2MB in the beginning and 308.3MB in the end (delta: 132.1MB). Free memory was 135.1MB in the beginning and 221.7MB in the end (delta: -86.6MB). Peak memory consumption was 47.1MB. Max. memory is 16.1GB. [2022-11-21 13:48:23,812 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 111.1MB. Free memory is still 51.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-21 13:48:23,812 INFO L158 Benchmark]: CACSL2BoogieTranslator took 730.51ms. Allocated memory is still 176.2MB. Free memory was 134.5MB in the beginning and 107.3MB in the end (delta: 27.3MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2022-11-21 13:48:23,813 INFO L158 Benchmark]: Boogie Procedure Inliner took 52.14ms. Allocated memory is still 176.2MB. Free memory was 107.3MB in the beginning and 104.6MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-21 13:48:23,813 INFO L158 Benchmark]: Boogie Preprocessor took 33.85ms. Allocated memory is still 176.2MB. Free memory was 104.6MB in the beginning and 103.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-21 13:48:23,814 INFO L158 Benchmark]: RCFGBuilder took 645.95ms. Allocated memory is still 176.2MB. Free memory was 103.1MB in the beginning and 139.1MB in the end (delta: -36.0MB). Peak memory consumption was 12.2MB. Max. memory is 16.1GB. [2022-11-21 13:48:23,814 INFO L158 Benchmark]: TraceAbstraction took 15244.31ms. Allocated memory was 176.2MB in the beginning and 308.3MB in the end (delta: 132.1MB). Free memory was 139.1MB in the beginning and 224.8MB in the end (delta: -85.7MB). Peak memory consumption was 47.4MB. Max. memory is 16.1GB. [2022-11-21 13:48:23,815 INFO L158 Benchmark]: Witness Printer took 58.71ms. Allocated memory is still 308.3MB. Free memory was 224.8MB in the beginning and 221.7MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-21 13:48:23,817 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 111.1MB. Free memory is still 51.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 730.51ms. Allocated memory is still 176.2MB. Free memory was 134.5MB in the beginning and 107.3MB in the end (delta: 27.3MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 52.14ms. Allocated memory is still 176.2MB. Free memory was 107.3MB in the beginning and 104.6MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 33.85ms. Allocated memory is still 176.2MB. Free memory was 104.6MB in the beginning and 103.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 645.95ms. Allocated memory is still 176.2MB. Free memory was 103.1MB in the beginning and 139.1MB in the end (delta: -36.0MB). Peak memory consumption was 12.2MB. Max. memory is 16.1GB. * TraceAbstraction took 15244.31ms. Allocated memory was 176.2MB in the beginning and 308.3MB in the end (delta: 132.1MB). Free memory was 139.1MB in the beginning and 224.8MB in the end (delta: -85.7MB). Peak memory consumption was 47.4MB. Max. memory is 16.1GB. * Witness Printer took 58.71ms. Allocated memory is still 308.3MB. Free memory was 224.8MB in the beginning and 221.7MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 936]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 936]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 943]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 943]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 931]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 931]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 112 locations, 9 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 15.1s, OverallIterations: 13, TraceHistogramMax: 10, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 5.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1495 SdHoareTripleChecker+Valid, 1.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1495 mSDsluCounter, 665 SdHoareTripleChecker+Invalid, 1.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 522 mSDsCounter, 52 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1431 IncrementalHoareTripleChecker+Invalid, 1483 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 52 mSolverCounterUnsat, 143 mSDtfsCounter, 1431 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 787 GetRequests, 508 SyntacticMatches, 11 SemanticMatches, 268 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1408 ImplicationChecksByTransitivity, 3.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=609occurred in iteration=10, InterpolantAutomatonStates: 188, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 7.3s InterpolantComputationTime, 1346 NumberOfCodeBlocks, 1276 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 1513 ConstructedInterpolants, 5 QuantifiedInterpolants, 9236 SizeOfPredicates, 39 NumberOfNonLiveVariables, 620 ConjunctsInSsa, 51 ConjunctsInUnsatCore, 22 InterpolantComputations, 10 PerfectInterpolantSequences, 1812/2532 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-21 13:48:23,839 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e871e26a-9361-4831-974e-3d454bd61fe0/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE