./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread-lit/fkp2013_variant-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff14c49-fc4e-42f8-8d54-e9dfec562d32/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff14c49-fc4e-42f8-8d54-e9dfec562d32/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff14c49-fc4e-42f8-8d54-e9dfec562d32/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff14c49-fc4e-42f8-8d54-e9dfec562d32/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-lit/fkp2013_variant-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff14c49-fc4e-42f8-8d54-e9dfec562d32/bin/uautomizer-Dbtcem3rbc/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff14c49-fc4e-42f8-8d54-e9dfec562d32/bin/uautomizer-Dbtcem3rbc --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 37f99419c791b8329e91533415d896c367c9197a331e0ac4d97f5b27dc6c2be9 --- 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-5e519f3 [2022-11-02 21:09:20,200 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 21:09:20,203 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 21:09:20,261 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 21:09:20,262 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 21:09:20,267 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 21:09:20,268 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 21:09:20,273 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 21:09:20,275 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 21:09:20,278 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 21:09:20,279 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 21:09:20,282 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 21:09:20,283 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 21:09:20,290 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 21:09:20,291 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 21:09:20,294 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 21:09:20,295 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 21:09:20,296 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 21:09:20,298 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 21:09:20,302 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 21:09:20,309 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 21:09:20,311 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 21:09:20,312 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 21:09:20,314 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 21:09:20,318 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 21:09:20,319 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 21:09:20,319 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 21:09:20,320 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 21:09:20,321 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 21:09:20,322 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 21:09:20,322 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 21:09:20,323 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 21:09:20,324 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 21:09:20,325 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 21:09:20,327 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 21:09:20,327 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 21:09:20,328 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 21:09:20,328 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 21:09:20,329 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 21:09:20,330 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 21:09:20,331 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 21:09:20,332 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff14c49-fc4e-42f8-8d54-e9dfec562d32/bin/uautomizer-Dbtcem3rbc/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-02 21:09:20,355 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 21:09:20,355 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 21:09:20,356 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 21:09:20,356 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 21:09:20,357 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 21:09:20,357 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 21:09:20,358 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 21:09:20,358 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 21:09:20,359 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 21:09:20,359 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 21:09:20,359 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 21:09:20,360 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-02 21:09:20,360 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 21:09:20,360 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 21:09:20,360 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 21:09:20,361 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 21:09:20,361 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 21:09:20,361 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 21:09:20,361 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-02 21:09:20,362 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 21:09:20,362 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 21:09:20,362 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 21:09:20,363 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 21:09:20,363 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 21:09:20,363 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 21:09:20,363 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 21:09:20,364 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:09:20,364 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 21:09:20,364 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 21:09:20,365 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 21:09:20,365 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 21:09:20,365 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 21:09:20,365 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 21:09:20,366 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_aff14c49-fc4e-42f8-8d54-e9dfec562d32/bin/uautomizer-Dbtcem3rbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff14c49-fc4e-42f8-8d54-e9dfec562d32/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 37f99419c791b8329e91533415d896c367c9197a331e0ac4d97f5b27dc6c2be9 [2022-11-02 21:09:20,705 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 21:09:20,737 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 21:09:20,741 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 21:09:20,742 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 21:09:20,743 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 21:09:20,745 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff14c49-fc4e-42f8-8d54-e9dfec562d32/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/pthread-lit/fkp2013_variant-2.i [2022-11-02 21:09:20,833 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff14c49-fc4e-42f8-8d54-e9dfec562d32/bin/uautomizer-Dbtcem3rbc/data/4439fe21f/95d9d66917da460485582da7915082fc/FLAG515d5abf4 [2022-11-02 21:09:21,622 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 21:09:21,623 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff14c49-fc4e-42f8-8d54-e9dfec562d32/sv-benchmarks/c/pthread-lit/fkp2013_variant-2.i [2022-11-02 21:09:21,648 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff14c49-fc4e-42f8-8d54-e9dfec562d32/bin/uautomizer-Dbtcem3rbc/data/4439fe21f/95d9d66917da460485582da7915082fc/FLAG515d5abf4 [2022-11-02 21:09:21,896 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff14c49-fc4e-42f8-8d54-e9dfec562d32/bin/uautomizer-Dbtcem3rbc/data/4439fe21f/95d9d66917da460485582da7915082fc [2022-11-02 21:09:21,899 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 21:09:21,901 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 21:09:21,902 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 21:09:21,903 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 21:09:21,909 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 21:09:21,910 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:09:21" (1/1) ... [2022-11-02 21:09:21,912 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7121b025 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:09:21, skipping insertion in model container [2022-11-02 21:09:21,912 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:09:21" (1/1) ... [2022-11-02 21:09:21,920 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 21:09:21,961 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 21:09:22,500 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff14c49-fc4e-42f8-8d54-e9dfec562d32/sv-benchmarks/c/pthread-lit/fkp2013_variant-2.i[30003,30016] [2022-11-02 21:09:22,521 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:09:22,534 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 21:09:22,600 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff14c49-fc4e-42f8-8d54-e9dfec562d32/sv-benchmarks/c/pthread-lit/fkp2013_variant-2.i[30003,30016] [2022-11-02 21:09:22,613 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:09:22,666 INFO L208 MainTranslator]: Completed translation [2022-11-02 21:09:22,667 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:09:22 WrapperNode [2022-11-02 21:09:22,667 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 21:09:22,670 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 21:09:22,670 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 21:09:22,670 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 21:09:22,681 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:09:22" (1/1) ... [2022-11-02 21:09:22,713 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:09:22" (1/1) ... [2022-11-02 21:09:22,752 INFO L138 Inliner]: procedures = 172, calls = 18, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 66 [2022-11-02 21:09:22,753 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 21:09:22,754 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 21:09:22,754 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 21:09:22,755 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 21:09:22,766 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:09:22" (1/1) ... [2022-11-02 21:09:22,767 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:09:22" (1/1) ... [2022-11-02 21:09:22,783 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:09:22" (1/1) ... [2022-11-02 21:09:22,784 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:09:22" (1/1) ... [2022-11-02 21:09:22,789 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:09:22" (1/1) ... [2022-11-02 21:09:22,801 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:09:22" (1/1) ... [2022-11-02 21:09:22,809 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:09:22" (1/1) ... [2022-11-02 21:09:22,811 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:09:22" (1/1) ... [2022-11-02 21:09:22,814 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 21:09:22,822 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 21:09:22,822 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 21:09:22,823 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 21:09:22,825 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:09:22" (1/1) ... [2022-11-02 21:09:22,832 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:09:22,846 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff14c49-fc4e-42f8-8d54-e9dfec562d32/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:09:22,864 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff14c49-fc4e-42f8-8d54-e9dfec562d32/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 21:09:22,882 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff14c49-fc4e-42f8-8d54-e9dfec562d32/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 21:09:22,923 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2022-11-02 21:09:22,924 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2022-11-02 21:09:22,924 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2022-11-02 21:09:22,924 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2022-11-02 21:09:22,924 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-02 21:09:22,925 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 21:09:22,925 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 21:09:22,925 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 21:09:22,925 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 21:09:22,925 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 21:09:22,926 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 21:09:22,928 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-02 21:09:23,169 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 21:09:23,171 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 21:09:23,354 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 21:09:23,365 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 21:09:23,365 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-02 21:09:23,373 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:09:23 BoogieIcfgContainer [2022-11-02 21:09:23,373 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 21:09:23,376 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 21:09:23,376 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 21:09:23,384 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 21:09:23,384 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 09:09:21" (1/3) ... [2022-11-02 21:09:23,385 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1598f039 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:09:23, skipping insertion in model container [2022-11-02 21:09:23,385 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:09:22" (2/3) ... [2022-11-02 21:09:23,386 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1598f039 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:09:23, skipping insertion in model container [2022-11-02 21:09:23,386 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:09:23" (3/3) ... [2022-11-02 21:09:23,388 INFO L112 eAbstractionObserver]: Analyzing ICFG fkp2013_variant-2.i [2022-11-02 21:09:23,400 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-02 21:09:23,413 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 21:09:23,414 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-11-02 21:09:23,414 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-02 21:09:23,532 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-02 21:09:23,615 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-02 21:09:23,636 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 90 places, 87 transitions, 184 flow [2022-11-02 21:09:23,644 INFO L112 LiptonReduction]: Starting Lipton reduction on Petri net that has 90 places, 87 transitions, 184 flow [2022-11-02 21:09:23,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 90 places, 87 transitions, 184 flow [2022-11-02 21:09:23,762 INFO L130 PetriNetUnfolder]: 4/100 cut-off events. [2022-11-02 21:09:23,763 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-02 21:09:23,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108 conditions, 100 events. 4/100 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 118 event pairs, 0 based on Foata normal form. 0/90 useless extension candidates. Maximal degree in co-relation 67. Up to 4 conditions per place. [2022-11-02 21:09:23,773 INFO L118 LiptonReduction]: Number of co-enabled transitions 1392 [2022-11-02 21:09:28,387 INFO L133 LiptonReduction]: Checked pairs total: 1316 [2022-11-02 21:09:28,388 INFO L135 LiptonReduction]: Total number of compositions: 92 [2022-11-02 21:09:28,397 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 21 places, 15 transitions, 40 flow [2022-11-02 21:09:28,415 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 62 states, 51 states have (on average 2.4313725490196076) internal successors, (124), 61 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:28,435 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 21:09:28,443 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=FINITE_AUTOMATA, 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;@4198ccd5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 21:09:28,443 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2022-11-02 21:09:28,446 INFO L276 IsEmpty]: Start isEmpty. Operand has 62 states, 51 states have (on average 2.4313725490196076) internal successors, (124), 61 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:28,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-02 21:09:28,452 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:09:28,452 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-02 21:09:28,453 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-02 21:09:28,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:09:28,459 INFO L85 PathProgramCache]: Analyzing trace with hash 1322742164, now seen corresponding path program 1 times [2022-11-02 21:09:28,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:09:28,470 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35494904] [2022-11-02 21:09:28,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:09:28,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:09:28,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:28,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:09:28,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:09:28,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35494904] [2022-11-02 21:09:28,757 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35494904] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:09:28,758 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:09:28,758 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 21:09:28,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936409319] [2022-11-02 21:09:28,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:09:28,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:09:28,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:09:28,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:09:28,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:09:28,799 INFO L87 Difference]: Start difference. First operand has 62 states, 51 states have (on average 2.4313725490196076) internal successors, (124), 61 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:28,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:09:28,870 INFO L93 Difference]: Finished difference Result 46 states and 88 transitions. [2022-11-02 21:09:28,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:09:28,873 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-02 21:09:28,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:09:28,884 INFO L225 Difference]: With dead ends: 46 [2022-11-02 21:09:28,884 INFO L226 Difference]: Without dead ends: 46 [2022-11-02 21:09:28,885 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:09:28,891 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 4 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:09:28,894 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 2 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 21:09:28,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2022-11-02 21:09:28,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2022-11-02 21:09:28,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 41 states have (on average 2.1463414634146343) internal successors, (88), 45 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:28,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 88 transitions. [2022-11-02 21:09:28,955 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 88 transitions. Word has length 6 [2022-11-02 21:09:28,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:09:28,956 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 88 transitions. [2022-11-02 21:09:28,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:28,957 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 88 transitions. [2022-11-02 21:09:28,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-02 21:09:28,958 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:09:28,958 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-02 21:09:28,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 21:09:28,960 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-02 21:09:28,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:09:28,961 INFO L85 PathProgramCache]: Analyzing trace with hash 1322742150, now seen corresponding path program 1 times [2022-11-02 21:09:28,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:09:28,967 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982441289] [2022-11-02 21:09:28,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:09:28,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:09:29,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:29,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:09:29,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:09:29,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982441289] [2022-11-02 21:09:29,184 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982441289] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:09:29,185 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:09:29,186 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-02 21:09:29,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122384287] [2022-11-02 21:09:29,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:09:29,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:09:29,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:09:29,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:09:29,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:09:29,195 INFO L87 Difference]: Start difference. First operand 46 states and 88 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:29,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:09:29,231 INFO L93 Difference]: Finished difference Result 26 states and 42 transitions. [2022-11-02 21:09:29,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:09:29,232 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-02 21:09:29,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:09:29,234 INFO L225 Difference]: With dead ends: 26 [2022-11-02 21:09:29,236 INFO L226 Difference]: Without dead ends: 24 [2022-11-02 21:09:29,237 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:09:29,245 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 4 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:09:29,247 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 2 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 21:09:29,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-11-02 21:09:29,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2022-11-02 21:09:29,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.6956521739130435) internal successors, (39), 23 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:29,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 39 transitions. [2022-11-02 21:09:29,257 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 39 transitions. Word has length 6 [2022-11-02 21:09:29,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:09:29,258 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 39 transitions. [2022-11-02 21:09:29,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:29,258 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 39 transitions. [2022-11-02 21:09:29,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-02 21:09:29,261 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:09:29,261 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-11-02 21:09:29,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 21:09:29,262 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-02 21:09:29,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:09:29,263 INFO L85 PathProgramCache]: Analyzing trace with hash -155079215, now seen corresponding path program 1 times [2022-11-02 21:09:29,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:09:29,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179194758] [2022-11-02 21:09:29,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:09:29,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:09:29,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 21:09:29,319 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 21:09:29,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 21:09:29,360 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 21:09:29,363 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-02 21:09:29,365 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 8 remaining) [2022-11-02 21:09:29,367 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 8 remaining) [2022-11-02 21:09:29,368 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 8 remaining) [2022-11-02 21:09:29,368 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 8 remaining) [2022-11-02 21:09:29,368 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 8 remaining) [2022-11-02 21:09:29,369 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 8 remaining) [2022-11-02 21:09:29,369 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 8 remaining) [2022-11-02 21:09:29,369 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 8 remaining) [2022-11-02 21:09:29,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 21:09:29,372 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-11-02 21:09:29,377 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-02 21:09:29,377 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-02 21:09:29,424 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-02 21:09:29,427 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-02 21:09:29,428 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 117 places, 111 transitions, 246 flow [2022-11-02 21:09:29,429 INFO L112 LiptonReduction]: Starting Lipton reduction on Petri net that has 117 places, 111 transitions, 246 flow [2022-11-02 21:09:29,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 117 places, 111 transitions, 246 flow [2022-11-02 21:09:29,497 INFO L130 PetriNetUnfolder]: 5/134 cut-off events. [2022-11-02 21:09:29,499 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-02 21:09:29,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 148 conditions, 134 events. 5/134 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 185 event pairs, 0 based on Foata normal form. 0/118 useless extension candidates. Maximal degree in co-relation 143. Up to 6 conditions per place. [2022-11-02 21:09:29,524 INFO L118 LiptonReduction]: Number of co-enabled transitions 2356 [2022-11-02 21:09:33,665 INFO L133 LiptonReduction]: Checked pairs total: 2765 [2022-11-02 21:09:33,666 INFO L135 LiptonReduction]: Total number of compositions: 108 [2022-11-02 21:09:33,667 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 35 places, 25 transitions, 74 flow [2022-11-02 21:09:33,720 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 474 states, 429 states have (on average 3.1375291375291376) internal successors, (1346), 473 states have internal predecessors, (1346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:33,722 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 21:09:33,723 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=FINITE_AUTOMATA, 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;@4198ccd5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 21:09:33,723 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2022-11-02 21:09:33,726 INFO L276 IsEmpty]: Start isEmpty. Operand has 474 states, 429 states have (on average 3.1375291375291376) internal successors, (1346), 473 states have internal predecessors, (1346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:33,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-02 21:09:33,727 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:09:33,727 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:09:33,728 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-02 21:09:33,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:09:33,729 INFO L85 PathProgramCache]: Analyzing trace with hash 1241105531, now seen corresponding path program 1 times [2022-11-02 21:09:33,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:09:33,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624346354] [2022-11-02 21:09:33,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:09:33,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:09:33,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:33,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:09:33,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:09:33,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624346354] [2022-11-02 21:09:33,797 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624346354] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:09:33,797 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:09:33,797 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-02 21:09:33,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036938884] [2022-11-02 21:09:33,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:09:33,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:09:33,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:09:33,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:09:33,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:09:33,801 INFO L87 Difference]: Start difference. First operand has 474 states, 429 states have (on average 3.1375291375291376) internal successors, (1346), 473 states have internal predecessors, (1346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:33,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:09:33,861 INFO L93 Difference]: Finished difference Result 254 states and 628 transitions. [2022-11-02 21:09:33,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:09:33,862 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-02 21:09:33,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:09:33,867 INFO L225 Difference]: With dead ends: 254 [2022-11-02 21:09:33,868 INFO L226 Difference]: Without dead ends: 246 [2022-11-02 21:09:33,868 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:09:33,869 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 10 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:09:33,870 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 5 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 21:09:33,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2022-11-02 21:09:33,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 246. [2022-11-02 21:09:33,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 225 states have (on average 2.6933333333333334) internal successors, (606), 245 states have internal predecessors, (606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:33,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 606 transitions. [2022-11-02 21:09:33,897 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 606 transitions. Word has length 7 [2022-11-02 21:09:33,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:09:33,897 INFO L495 AbstractCegarLoop]: Abstraction has 246 states and 606 transitions. [2022-11-02 21:09:33,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:33,898 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 606 transitions. [2022-11-02 21:09:33,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-02 21:09:33,899 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:09:33,899 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:09:33,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-02 21:09:33,899 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-02 21:09:33,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:09:33,900 INFO L85 PathProgramCache]: Analyzing trace with hash -180440178, now seen corresponding path program 1 times [2022-11-02 21:09:33,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:09:33,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424176172] [2022-11-02 21:09:33,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:09:33,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:09:33,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:33,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:09:33,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:09:33,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424176172] [2022-11-02 21:09:33,949 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424176172] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:09:33,949 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:09:33,949 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 21:09:33,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572249244] [2022-11-02 21:09:33,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:09:33,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:09:33,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:09:33,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:09:33,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:09:33,952 INFO L87 Difference]: Start difference. First operand 246 states and 606 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:34,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:09:34,042 INFO L93 Difference]: Finished difference Result 234 states and 580 transitions. [2022-11-02 21:09:34,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:09:34,042 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-02 21:09:34,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:09:34,056 INFO L225 Difference]: With dead ends: 234 [2022-11-02 21:09:34,059 INFO L226 Difference]: Without dead ends: 234 [2022-11-02 21:09:34,059 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:09:34,060 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 3 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:09:34,061 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 6 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:09:34,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2022-11-02 21:09:34,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 234. [2022-11-02 21:09:34,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 215 states have (on average 2.697674418604651) internal successors, (580), 233 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:34,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 580 transitions. [2022-11-02 21:09:34,102 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 580 transitions. Word has length 8 [2022-11-02 21:09:34,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:09:34,103 INFO L495 AbstractCegarLoop]: Abstraction has 234 states and 580 transitions. [2022-11-02 21:09:34,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:34,103 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 580 transitions. [2022-11-02 21:09:34,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-02 21:09:34,105 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:09:34,105 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:09:34,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-02 21:09:34,107 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-02 21:09:34,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:09:34,108 INFO L85 PathProgramCache]: Analyzing trace with hash 175336731, now seen corresponding path program 1 times [2022-11-02 21:09:34,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:09:34,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442387511] [2022-11-02 21:09:34,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:09:34,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:09:34,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:34,205 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:09:34,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:09:34,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442387511] [2022-11-02 21:09:34,206 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442387511] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:09:34,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2087986586] [2022-11-02 21:09:34,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:09:34,206 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:09:34,207 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff14c49-fc4e-42f8-8d54-e9dfec562d32/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:09:34,220 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff14c49-fc4e-42f8-8d54-e9dfec562d32/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:09:34,252 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff14c49-fc4e-42f8-8d54-e9dfec562d32/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-02 21:09:34,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:34,361 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 21:09:34,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:09:34,411 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:09:34,411 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:09:34,444 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:09:34,445 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2087986586] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:09:34,445 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 21:09:34,445 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-11-02 21:09:34,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949687323] [2022-11-02 21:09:34,446 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 21:09:34,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:09:34,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:09:34,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:09:34,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:09:34,448 INFO L87 Difference]: Start difference. First operand 234 states and 580 transitions. Second operand has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:34,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:09:34,546 INFO L93 Difference]: Finished difference Result 208 states and 509 transitions. [2022-11-02 21:09:34,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 21:09:34,547 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-02 21:09:34,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:09:34,549 INFO L225 Difference]: With dead ends: 208 [2022-11-02 21:09:34,549 INFO L226 Difference]: Without dead ends: 208 [2022-11-02 21:09:34,550 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:09:34,551 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 58 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:09:34,552 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 8 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:09:34,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2022-11-02 21:09:34,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 208. [2022-11-02 21:09:34,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 194 states have (on average 2.6237113402061856) internal successors, (509), 207 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:34,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 509 transitions. [2022-11-02 21:09:34,577 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 509 transitions. Word has length 12 [2022-11-02 21:09:34,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:09:34,578 INFO L495 AbstractCegarLoop]: Abstraction has 208 states and 509 transitions. [2022-11-02 21:09:34,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:34,578 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 509 transitions. [2022-11-02 21:09:34,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-02 21:09:34,579 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:09:34,579 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:09:34,622 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff14c49-fc4e-42f8-8d54-e9dfec562d32/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-02 21:09:34,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff14c49-fc4e-42f8-8d54-e9dfec562d32/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:09:34,807 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-02 21:09:34,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:09:34,807 INFO L85 PathProgramCache]: Analyzing trace with hash 175336732, now seen corresponding path program 1 times [2022-11-02 21:09:34,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:09:34,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398484191] [2022-11-02 21:09:34,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:09:34,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:09:34,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:34,905 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:09:34,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:09:34,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398484191] [2022-11-02 21:09:34,906 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398484191] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:09:34,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1633409988] [2022-11-02 21:09:34,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:09:34,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:09:34,907 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff14c49-fc4e-42f8-8d54-e9dfec562d32/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:09:34,908 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff14c49-fc4e-42f8-8d54-e9dfec562d32/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:09:34,921 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff14c49-fc4e-42f8-8d54-e9dfec562d32/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-02 21:09:35,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:35,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 21:09:35,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:09:35,067 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:09:35,067 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:09:35,068 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1633409988] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:09:35,068 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 21:09:35,068 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2022-11-02 21:09:35,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333011036] [2022-11-02 21:09:35,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:09:35,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:09:35,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:09:35,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:09:35,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:09:35,070 INFO L87 Difference]: Start difference. First operand 208 states and 509 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:35,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:09:35,127 INFO L93 Difference]: Finished difference Result 182 states and 438 transitions. [2022-11-02 21:09:35,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 21:09:35,127 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-02 21:09:35,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:09:35,132 INFO L225 Difference]: With dead ends: 182 [2022-11-02 21:09:35,133 INFO L226 Difference]: Without dead ends: 182 [2022-11-02 21:09:35,134 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:09:35,144 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 15 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:09:35,144 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 7 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 21:09:35,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2022-11-02 21:09:35,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2022-11-02 21:09:35,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 173 states have (on average 2.531791907514451) internal successors, (438), 181 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:35,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 438 transitions. [2022-11-02 21:09:35,171 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 438 transitions. Word has length 12 [2022-11-02 21:09:35,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:09:35,178 INFO L495 AbstractCegarLoop]: Abstraction has 182 states and 438 transitions. [2022-11-02 21:09:35,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:35,179 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 438 transitions. [2022-11-02 21:09:35,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-02 21:09:35,180 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:09:35,180 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:09:35,220 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff14c49-fc4e-42f8-8d54-e9dfec562d32/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-02 21:09:35,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff14c49-fc4e-42f8-8d54-e9dfec562d32/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:09:35,381 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-02 21:09:35,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:09:35,382 INFO L85 PathProgramCache]: Analyzing trace with hash 1140634100, now seen corresponding path program 1 times [2022-11-02 21:09:35,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:09:35,382 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515371461] [2022-11-02 21:09:35,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:09:35,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:09:35,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:35,463 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 21:09:35,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:09:35,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515371461] [2022-11-02 21:09:35,464 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515371461] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:09:35,464 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:09:35,464 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:09:35,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131547461] [2022-11-02 21:09:35,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:09:35,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:09:35,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:09:35,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:09:35,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:09:35,466 INFO L87 Difference]: Start difference. First operand 182 states and 438 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:35,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:09:35,577 INFO L93 Difference]: Finished difference Result 200 states and 459 transitions. [2022-11-02 21:09:35,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 21:09:35,578 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-02 21:09:35,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:09:35,585 INFO L225 Difference]: With dead ends: 200 [2022-11-02 21:09:35,585 INFO L226 Difference]: Without dead ends: 200 [2022-11-02 21:09:35,585 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:09:35,587 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 58 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:09:35,589 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 14 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:09:35,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2022-11-02 21:09:35,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 170. [2022-11-02 21:09:35,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 163 states have (on average 2.5153374233128836) internal successors, (410), 169 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:35,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 410 transitions. [2022-11-02 21:09:35,614 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 410 transitions. Word has length 13 [2022-11-02 21:09:35,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:09:35,615 INFO L495 AbstractCegarLoop]: Abstraction has 170 states and 410 transitions. [2022-11-02 21:09:35,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:35,616 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 410 transitions. [2022-11-02 21:09:35,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-02 21:09:35,621 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:09:35,622 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:09:35,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-02 21:09:35,622 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-02 21:09:35,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:09:35,623 INFO L85 PathProgramCache]: Analyzing trace with hash 1140634114, now seen corresponding path program 1 times [2022-11-02 21:09:35,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:09:35,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020532887] [2022-11-02 21:09:35,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:09:35,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:09:35,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:35,741 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 21:09:35,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:09:35,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020532887] [2022-11-02 21:09:35,741 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020532887] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:09:35,742 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:09:35,742 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:09:35,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992541901] [2022-11-02 21:09:35,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:09:35,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:09:35,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:09:35,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:09:35,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:09:35,743 INFO L87 Difference]: Start difference. First operand 170 states and 410 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:35,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:09:35,853 INFO L93 Difference]: Finished difference Result 188 states and 431 transitions. [2022-11-02 21:09:35,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 21:09:35,854 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-02 21:09:35,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:09:35,856 INFO L225 Difference]: With dead ends: 188 [2022-11-02 21:09:35,856 INFO L226 Difference]: Without dead ends: 184 [2022-11-02 21:09:35,856 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:09:35,857 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 43 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:09:35,857 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 19 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:09:35,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2022-11-02 21:09:35,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 154. [2022-11-02 21:09:35,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 149 states have (on average 2.4966442953020134) internal successors, (372), 153 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:35,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 372 transitions. [2022-11-02 21:09:35,866 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 372 transitions. Word has length 13 [2022-11-02 21:09:35,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:09:35,866 INFO L495 AbstractCegarLoop]: Abstraction has 154 states and 372 transitions. [2022-11-02 21:09:35,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:35,866 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 372 transitions. [2022-11-02 21:09:35,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-02 21:09:35,867 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:09:35,867 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:09:35,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-02 21:09:35,868 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-02 21:09:35,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:09:35,868 INFO L85 PathProgramCache]: Analyzing trace with hash 1140668096, now seen corresponding path program 1 times [2022-11-02 21:09:35,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:09:35,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686814404] [2022-11-02 21:09:35,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:09:35,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:09:35,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:35,984 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 21:09:35,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:09:35,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686814404] [2022-11-02 21:09:35,985 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686814404] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:09:35,985 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:09:35,985 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:09:35,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72566021] [2022-11-02 21:09:35,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:09:35,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:09:35,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:09:35,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:09:35,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:09:35,987 INFO L87 Difference]: Start difference. First operand 154 states and 372 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:36,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:09:36,091 INFO L93 Difference]: Finished difference Result 172 states and 393 transitions. [2022-11-02 21:09:36,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 21:09:36,103 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-02 21:09:36,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:09:36,104 INFO L225 Difference]: With dead ends: 172 [2022-11-02 21:09:36,104 INFO L226 Difference]: Without dead ends: 172 [2022-11-02 21:09:36,104 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:09:36,105 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 36 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:09:36,105 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 19 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:09:36,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2022-11-02 21:09:36,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 142. [2022-11-02 21:09:36,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 139 states have (on average 2.4748201438848922) internal successors, (344), 141 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:36,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 344 transitions. [2022-11-02 21:09:36,112 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 344 transitions. Word has length 13 [2022-11-02 21:09:36,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:09:36,112 INFO L495 AbstractCegarLoop]: Abstraction has 142 states and 344 transitions. [2022-11-02 21:09:36,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:36,112 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 344 transitions. [2022-11-02 21:09:36,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-02 21:09:36,113 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:09:36,113 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:09:36,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-02 21:09:36,113 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-02 21:09:36,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:09:36,114 INFO L85 PathProgramCache]: Analyzing trace with hash 1140668054, now seen corresponding path program 1 times [2022-11-02 21:09:36,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:09:36,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880185699] [2022-11-02 21:09:36,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:09:36,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:09:36,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:36,253 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 21:09:36,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:09:36,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880185699] [2022-11-02 21:09:36,254 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880185699] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:09:36,254 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:09:36,254 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:09:36,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370355597] [2022-11-02 21:09:36,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:09:36,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:09:36,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:09:36,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:09:36,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:09:36,256 INFO L87 Difference]: Start difference. First operand 142 states and 344 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:36,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:09:36,372 INFO L93 Difference]: Finished difference Result 160 states and 365 transitions. [2022-11-02 21:09:36,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 21:09:36,372 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-02 21:09:36,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:09:36,374 INFO L225 Difference]: With dead ends: 160 [2022-11-02 21:09:36,374 INFO L226 Difference]: Without dead ends: 154 [2022-11-02 21:09:36,375 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:09:36,375 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 47 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:09:36,377 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 14 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:09:36,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2022-11-02 21:09:36,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 124. [2022-11-02 21:09:36,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 123 states have (on average 2.4634146341463414) internal successors, (303), 123 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:36,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 303 transitions. [2022-11-02 21:09:36,385 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 303 transitions. Word has length 13 [2022-11-02 21:09:36,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:09:36,386 INFO L495 AbstractCegarLoop]: Abstraction has 124 states and 303 transitions. [2022-11-02 21:09:36,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:36,386 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 303 transitions. [2022-11-02 21:09:36,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-02 21:09:36,387 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:09:36,387 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:09:36,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-02 21:09:36,388 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-02 21:09:36,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:09:36,388 INFO L85 PathProgramCache]: Analyzing trace with hash 994908113, now seen corresponding path program 1 times [2022-11-02 21:09:36,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:09:36,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317572573] [2022-11-02 21:09:36,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:09:36,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:09:36,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 21:09:36,415 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 21:09:36,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 21:09:36,438 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 21:09:36,438 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-02 21:09:36,438 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 10 remaining) [2022-11-02 21:09:36,439 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 10 remaining) [2022-11-02 21:09:36,439 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 10 remaining) [2022-11-02 21:09:36,439 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 10 remaining) [2022-11-02 21:09:36,439 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 10 remaining) [2022-11-02 21:09:36,440 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 10 remaining) [2022-11-02 21:09:36,440 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 10 remaining) [2022-11-02 21:09:36,440 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 10 remaining) [2022-11-02 21:09:36,440 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 10 remaining) [2022-11-02 21:09:36,441 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 10 remaining) [2022-11-02 21:09:36,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-02 21:09:36,443 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:09:36,443 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-02 21:09:36,444 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-02 21:09:36,483 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-02 21:09:36,487 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-02 21:09:36,487 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 144 places, 135 transitions, 312 flow [2022-11-02 21:09:36,487 INFO L112 LiptonReduction]: Starting Lipton reduction on Petri net that has 144 places, 135 transitions, 312 flow [2022-11-02 21:09:36,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 144 places, 135 transitions, 312 flow [2022-11-02 21:09:36,547 INFO L130 PetriNetUnfolder]: 6/168 cut-off events. [2022-11-02 21:09:36,547 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-11-02 21:09:36,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 189 conditions, 168 events. 6/168 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 248 event pairs, 0 based on Foata normal form. 0/146 useless extension candidates. Maximal degree in co-relation 182. Up to 8 conditions per place. [2022-11-02 21:09:36,557 INFO L118 LiptonReduction]: Number of co-enabled transitions 3540 [2022-11-02 21:09:40,643 INFO L133 LiptonReduction]: Checked pairs total: 4619 [2022-11-02 21:09:40,643 INFO L135 LiptonReduction]: Total number of compositions: 137 [2022-11-02 21:09:40,644 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 46 places, 32 transitions, 106 flow [2022-11-02 21:09:40,768 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 2414 states, 2271 states have (on average 3.852928225451343) internal successors, (8750), 2413 states have internal predecessors, (8750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:40,769 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 21:09:40,770 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=FINITE_AUTOMATA, 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;@4198ccd5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 21:09:40,770 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2022-11-02 21:09:40,780 INFO L276 IsEmpty]: Start isEmpty. Operand has 2414 states, 2271 states have (on average 3.852928225451343) internal successors, (8750), 2413 states have internal predecessors, (8750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:40,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-02 21:09:40,780 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:09:40,781 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:09:40,781 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-02 21:09:40,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:09:40,782 INFO L85 PathProgramCache]: Analyzing trace with hash 1206981199, now seen corresponding path program 1 times [2022-11-02 21:09:40,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:09:40,782 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326567668] [2022-11-02 21:09:40,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:09:40,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:09:40,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:40,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:09:40,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:09:40,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326567668] [2022-11-02 21:09:40,829 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326567668] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:09:40,830 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:09:40,830 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-02 21:09:40,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356898750] [2022-11-02 21:09:40,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:09:40,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:09:40,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:09:40,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:09:40,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:09:40,841 INFO L87 Difference]: Start difference. First operand has 2414 states, 2271 states have (on average 3.852928225451343) internal successors, (8750), 2413 states have internal predecessors, (8750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:40,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:09:40,932 INFO L93 Difference]: Finished difference Result 2122 states and 6640 transitions. [2022-11-02 21:09:40,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:09:40,933 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-02 21:09:40,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:09:40,953 INFO L225 Difference]: With dead ends: 2122 [2022-11-02 21:09:40,953 INFO L226 Difference]: Without dead ends: 2110 [2022-11-02 21:09:40,954 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:09:40,954 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 15 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:09:40,955 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 5 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:09:40,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2110 states. [2022-11-02 21:09:41,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2110 to 1810. [2022-11-02 21:09:41,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1810 states, 1709 states have (on average 3.564657694558221) internal successors, (6092), 1809 states have internal predecessors, (6092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:41,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1810 states to 1810 states and 6092 transitions. [2022-11-02 21:09:41,044 INFO L78 Accepts]: Start accepts. Automaton has 1810 states and 6092 transitions. Word has length 7 [2022-11-02 21:09:41,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:09:41,044 INFO L495 AbstractCegarLoop]: Abstraction has 1810 states and 6092 transitions. [2022-11-02 21:09:41,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:41,045 INFO L276 IsEmpty]: Start isEmpty. Operand 1810 states and 6092 transitions. [2022-11-02 21:09:41,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-02 21:09:41,046 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:09:41,046 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:09:41,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-02 21:09:41,048 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-02 21:09:41,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:09:41,049 INFO L85 PathProgramCache]: Analyzing trace with hash 1206981200, now seen corresponding path program 1 times [2022-11-02 21:09:41,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:09:41,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817863779] [2022-11-02 21:09:41,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:09:41,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:09:41,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:41,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:09:41,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:09:41,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817863779] [2022-11-02 21:09:41,101 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817863779] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:09:41,101 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:09:41,101 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-02 21:09:41,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244877352] [2022-11-02 21:09:41,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:09:41,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:09:41,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:09:41,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:09:41,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:09:41,107 INFO L87 Difference]: Start difference. First operand 1810 states and 6092 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:41,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:09:41,184 INFO L93 Difference]: Finished difference Result 1262 states and 3864 transitions. [2022-11-02 21:09:41,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:09:41,185 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-02 21:09:41,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:09:41,195 INFO L225 Difference]: With dead ends: 1262 [2022-11-02 21:09:41,195 INFO L226 Difference]: Without dead ends: 1260 [2022-11-02 21:09:41,195 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:09:41,197 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 12 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:09:41,198 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 5 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:09:41,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1260 states. [2022-11-02 21:09:41,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1260 to 1212. [2022-11-02 21:09:41,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1212 states, 1145 states have (on average 3.314410480349345) internal successors, (3795), 1211 states have internal predecessors, (3795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:41,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1212 states to 1212 states and 3795 transitions. [2022-11-02 21:09:41,252 INFO L78 Accepts]: Start accepts. Automaton has 1212 states and 3795 transitions. Word has length 7 [2022-11-02 21:09:41,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:09:41,252 INFO L495 AbstractCegarLoop]: Abstraction has 1212 states and 3795 transitions. [2022-11-02 21:09:41,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:41,253 INFO L276 IsEmpty]: Start isEmpty. Operand 1212 states and 3795 transitions. [2022-11-02 21:09:41,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-02 21:09:41,254 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:09:41,254 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:09:41,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-02 21:09:41,255 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-02 21:09:41,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:09:41,255 INFO L85 PathProgramCache]: Analyzing trace with hash -1238295535, now seen corresponding path program 1 times [2022-11-02 21:09:41,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:09:41,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198935321] [2022-11-02 21:09:41,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:09:41,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:09:41,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:41,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:09:41,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:09:41,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198935321] [2022-11-02 21:09:41,295 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198935321] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:09:41,295 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:09:41,295 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 21:09:41,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78065065] [2022-11-02 21:09:41,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:09:41,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:09:41,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:09:41,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:09:41,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:09:41,297 INFO L87 Difference]: Start difference. First operand 1212 states and 3795 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:41,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:09:41,356 INFO L93 Difference]: Finished difference Result 1200 states and 3769 transitions. [2022-11-02 21:09:41,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:09:41,357 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-02 21:09:41,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:09:41,366 INFO L225 Difference]: With dead ends: 1200 [2022-11-02 21:09:41,367 INFO L226 Difference]: Without dead ends: 1200 [2022-11-02 21:09:41,367 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:09:41,369 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 3 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:09:41,369 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 6 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 21:09:41,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1200 states. [2022-11-02 21:09:41,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1200 to 1200. [2022-11-02 21:09:41,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1200 states, 1135 states have (on average 3.320704845814978) internal successors, (3769), 1199 states have internal predecessors, (3769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:41,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1200 states to 1200 states and 3769 transitions. [2022-11-02 21:09:41,482 INFO L78 Accepts]: Start accepts. Automaton has 1200 states and 3769 transitions. Word has length 8 [2022-11-02 21:09:41,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:09:41,482 INFO L495 AbstractCegarLoop]: Abstraction has 1200 states and 3769 transitions. [2022-11-02 21:09:41,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:41,483 INFO L276 IsEmpty]: Start isEmpty. Operand 1200 states and 3769 transitions. [2022-11-02 21:09:41,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-02 21:09:41,485 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:09:41,485 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:09:41,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-02 21:09:41,486 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-02 21:09:41,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:09:41,487 INFO L85 PathProgramCache]: Analyzing trace with hash -979185548, now seen corresponding path program 1 times [2022-11-02 21:09:41,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:09:41,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011601738] [2022-11-02 21:09:41,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:09:41,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:09:41,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:41,554 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:09:41,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:09:41,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011601738] [2022-11-02 21:09:41,555 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011601738] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:09:41,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1934407474] [2022-11-02 21:09:41,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:09:41,556 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:09:41,556 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff14c49-fc4e-42f8-8d54-e9dfec562d32/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:09:41,557 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff14c49-fc4e-42f8-8d54-e9dfec562d32/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:09:41,577 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff14c49-fc4e-42f8-8d54-e9dfec562d32/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-02 21:09:41,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:41,671 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 21:09:41,672 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:09:41,699 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:09:41,699 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:09:41,747 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:09:41,747 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1934407474] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:09:41,747 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 21:09:41,748 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-11-02 21:09:41,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852760110] [2022-11-02 21:09:41,748 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 21:09:41,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:09:41,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:09:41,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:09:41,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:09:41,751 INFO L87 Difference]: Start difference. First operand 1200 states and 3769 transitions. Second operand has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:41,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:09:41,880 INFO L93 Difference]: Finished difference Result 1048 states and 3269 transitions. [2022-11-02 21:09:41,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 21:09:41,880 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-02 21:09:41,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:09:41,890 INFO L225 Difference]: With dead ends: 1048 [2022-11-02 21:09:41,891 INFO L226 Difference]: Without dead ends: 1048 [2022-11-02 21:09:41,891 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:09:41,892 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 85 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:09:41,892 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 10 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:09:41,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1048 states. [2022-11-02 21:09:41,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1048 to 1048. [2022-11-02 21:09:41,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1048 states, 1001 states have (on average 3.265734265734266) internal successors, (3269), 1047 states have internal predecessors, (3269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:41,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1048 states to 1048 states and 3269 transitions. [2022-11-02 21:09:41,942 INFO L78 Accepts]: Start accepts. Automaton has 1048 states and 3269 transitions. Word has length 12 [2022-11-02 21:09:41,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:09:41,943 INFO L495 AbstractCegarLoop]: Abstraction has 1048 states and 3269 transitions. [2022-11-02 21:09:41,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:41,943 INFO L276 IsEmpty]: Start isEmpty. Operand 1048 states and 3269 transitions. [2022-11-02 21:09:41,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-02 21:09:41,944 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:09:41,944 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:09:41,991 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff14c49-fc4e-42f8-8d54-e9dfec562d32/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-02 21:09:42,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff14c49-fc4e-42f8-8d54-e9dfec562d32/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-02 21:09:42,171 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-02 21:09:42,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:09:42,171 INFO L85 PathProgramCache]: Analyzing trace with hash -979185493, now seen corresponding path program 1 times [2022-11-02 21:09:42,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:09:42,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150409007] [2022-11-02 21:09:42,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:09:42,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:09:42,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:42,229 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:09:42,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:09:42,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150409007] [2022-11-02 21:09:42,230 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1150409007] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:09:42,231 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:09:42,231 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 21:09:42,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066833453] [2022-11-02 21:09:42,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:09:42,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:09:42,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:09:42,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:09:42,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:09:42,233 INFO L87 Difference]: Start difference. First operand 1048 states and 3269 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:42,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:09:42,280 INFO L93 Difference]: Finished difference Result 896 states and 2769 transitions. [2022-11-02 21:09:42,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:09:42,281 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-02 21:09:42,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:09:42,288 INFO L225 Difference]: With dead ends: 896 [2022-11-02 21:09:42,288 INFO L226 Difference]: Without dead ends: 896 [2022-11-02 21:09:42,290 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:09:42,291 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 17 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:09:42,291 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 4 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 21:09:42,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 896 states. [2022-11-02 21:09:42,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 896 to 896. [2022-11-02 21:09:42,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 896 states, 867 states have (on average 3.1937716262975777) internal successors, (2769), 895 states have internal predecessors, (2769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:42,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 896 states to 896 states and 2769 transitions. [2022-11-02 21:09:42,327 INFO L78 Accepts]: Start accepts. Automaton has 896 states and 2769 transitions. Word has length 12 [2022-11-02 21:09:42,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:09:42,327 INFO L495 AbstractCegarLoop]: Abstraction has 896 states and 2769 transitions. [2022-11-02 21:09:42,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:42,328 INFO L276 IsEmpty]: Start isEmpty. Operand 896 states and 2769 transitions. [2022-11-02 21:09:42,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-02 21:09:42,328 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:09:42,329 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:09:42,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-02 21:09:42,329 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-02 21:09:42,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:09:42,330 INFO L85 PathProgramCache]: Analyzing trace with hash 839176036, now seen corresponding path program 1 times [2022-11-02 21:09:42,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:09:42,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741326504] [2022-11-02 21:09:42,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:09:42,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:09:42,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:42,412 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:09:42,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:09:42,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741326504] [2022-11-02 21:09:42,413 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741326504] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:09:42,413 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:09:42,413 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:09:42,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437930346] [2022-11-02 21:09:42,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:09:42,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:09:42,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:09:42,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:09:42,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:09:42,416 INFO L87 Difference]: Start difference. First operand 896 states and 2769 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:42,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:09:42,600 INFO L93 Difference]: Finished difference Result 1192 states and 3383 transitions. [2022-11-02 21:09:42,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 21:09:42,601 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-02 21:09:42,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:09:42,610 INFO L225 Difference]: With dead ends: 1192 [2022-11-02 21:09:42,610 INFO L226 Difference]: Without dead ends: 1192 [2022-11-02 21:09:42,610 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:09:42,611 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 54 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:09:42,612 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 21 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:09:42,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1192 states. [2022-11-02 21:09:42,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1192 to 890. [2022-11-02 21:09:42,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 890 states, 864 states have (on average 3.212962962962963) internal successors, (2776), 889 states have internal predecessors, (2776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:42,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 890 states to 890 states and 2776 transitions. [2022-11-02 21:09:42,653 INFO L78 Accepts]: Start accepts. Automaton has 890 states and 2776 transitions. Word has length 13 [2022-11-02 21:09:42,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:09:42,654 INFO L495 AbstractCegarLoop]: Abstraction has 890 states and 2776 transitions. [2022-11-02 21:09:42,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:42,654 INFO L276 IsEmpty]: Start isEmpty. Operand 890 states and 2776 transitions. [2022-11-02 21:09:42,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-02 21:09:42,655 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:09:42,655 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:09:42,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-02 21:09:42,655 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-02 21:09:42,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:09:42,656 INFO L85 PathProgramCache]: Analyzing trace with hash 839175991, now seen corresponding path program 1 times [2022-11-02 21:09:42,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:09:42,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561162218] [2022-11-02 21:09:42,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:09:42,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:09:42,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:42,747 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:09:42,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:09:42,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561162218] [2022-11-02 21:09:42,748 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561162218] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:09:42,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [928759923] [2022-11-02 21:09:42,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:09:42,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:09:42,749 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff14c49-fc4e-42f8-8d54-e9dfec562d32/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:09:42,751 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff14c49-fc4e-42f8-8d54-e9dfec562d32/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:09:42,778 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff14c49-fc4e-42f8-8d54-e9dfec562d32/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-02 21:09:42,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:42,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 21:09:42,877 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:09:42,914 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:09:42,915 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:09:42,964 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:09:42,964 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [928759923] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:09:42,964 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 21:09:42,964 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-11-02 21:09:42,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280019795] [2022-11-02 21:09:42,965 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 21:09:42,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 21:09:42,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:09:42,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 21:09:42,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:09:42,968 INFO L87 Difference]: Start difference. First operand 890 states and 2776 transitions. Second operand has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:43,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:09:43,164 INFO L93 Difference]: Finished difference Result 1240 states and 3447 transitions. [2022-11-02 21:09:43,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 21:09:43,165 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-02 21:09:43,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:09:43,175 INFO L225 Difference]: With dead ends: 1240 [2022-11-02 21:09:43,175 INFO L226 Difference]: Without dead ends: 1232 [2022-11-02 21:09:43,176 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2022-11-02 21:09:43,177 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 74 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:09:43,177 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 25 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 21:09:43,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1232 states. [2022-11-02 21:09:43,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1232 to 836. [2022-11-02 21:09:43,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 836 states, 813 states have (on average 3.177121771217712) internal successors, (2583), 835 states have internal predecessors, (2583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:43,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 836 states to 836 states and 2583 transitions. [2022-11-02 21:09:43,215 INFO L78 Accepts]: Start accepts. Automaton has 836 states and 2583 transitions. Word has length 13 [2022-11-02 21:09:43,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:09:43,216 INFO L495 AbstractCegarLoop]: Abstraction has 836 states and 2583 transitions. [2022-11-02 21:09:43,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:43,216 INFO L276 IsEmpty]: Start isEmpty. Operand 836 states and 2583 transitions. [2022-11-02 21:09:43,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-02 21:09:43,217 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:09:43,217 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:09:43,263 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff14c49-fc4e-42f8-8d54-e9dfec562d32/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-02 21:09:43,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff14c49-fc4e-42f8-8d54-e9dfec562d32/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:09:43,435 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-02 21:09:43,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:09:43,435 INFO L85 PathProgramCache]: Analyzing trace with hash -289776335, now seen corresponding path program 1 times [2022-11-02 21:09:43,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:09:43,435 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554808349] [2022-11-02 21:09:43,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:09:43,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:09:43,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:43,532 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 21:09:43,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:09:43,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554808349] [2022-11-02 21:09:43,533 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554808349] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:09:43,533 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:09:43,533 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:09:43,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670036866] [2022-11-02 21:09:43,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:09:43,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:09:43,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:09:43,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:09:43,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:09:43,535 INFO L87 Difference]: Start difference. First operand 836 states and 2583 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:43,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:09:43,689 INFO L93 Difference]: Finished difference Result 1048 states and 2955 transitions. [2022-11-02 21:09:43,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 21:09:43,689 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-02 21:09:43,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:09:43,696 INFO L225 Difference]: With dead ends: 1048 [2022-11-02 21:09:43,697 INFO L226 Difference]: Without dead ends: 1048 [2022-11-02 21:09:43,697 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:09:43,698 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 54 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:09:43,698 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 21 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:09:43,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1048 states. [2022-11-02 21:09:43,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1048 to 818. [2022-11-02 21:09:43,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 818 states, 798 states have (on average 3.107769423558897) internal successors, (2480), 817 states have internal predecessors, (2480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:43,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 818 states to 818 states and 2480 transitions. [2022-11-02 21:09:43,733 INFO L78 Accepts]: Start accepts. Automaton has 818 states and 2480 transitions. Word has length 13 [2022-11-02 21:09:43,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:09:43,733 INFO L495 AbstractCegarLoop]: Abstraction has 818 states and 2480 transitions. [2022-11-02 21:09:43,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:43,733 INFO L276 IsEmpty]: Start isEmpty. Operand 818 states and 2480 transitions. [2022-11-02 21:09:43,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-02 21:09:43,734 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:09:43,734 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:09:43,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-02 21:09:43,735 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-02 21:09:43,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:09:43,736 INFO L85 PathProgramCache]: Analyzing trace with hash -289776334, now seen corresponding path program 1 times [2022-11-02 21:09:43,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:09:43,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017328715] [2022-11-02 21:09:43,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:09:43,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:09:43,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:43,790 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 21:09:43,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:09:43,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017328715] [2022-11-02 21:09:43,791 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017328715] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:09:43,791 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:09:43,791 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:09:43,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783386845] [2022-11-02 21:09:43,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:09:43,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:09:43,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:09:43,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:09:43,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:09:43,793 INFO L87 Difference]: Start difference. First operand 818 states and 2480 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:43,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:09:43,932 INFO L93 Difference]: Finished difference Result 990 states and 2734 transitions. [2022-11-02 21:09:43,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 21:09:43,932 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-02 21:09:43,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:09:43,938 INFO L225 Difference]: With dead ends: 990 [2022-11-02 21:09:43,939 INFO L226 Difference]: Without dead ends: 974 [2022-11-02 21:09:43,939 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:09:43,939 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 62 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:09:43,940 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 16 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:09:43,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 974 states. [2022-11-02 21:09:43,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 974 to 702. [2022-11-02 21:09:43,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 702 states, 685 states have (on average 3.091970802919708) internal successors, (2118), 701 states have internal predecessors, (2118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:43,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 702 states to 702 states and 2118 transitions. [2022-11-02 21:09:43,966 INFO L78 Accepts]: Start accepts. Automaton has 702 states and 2118 transitions. Word has length 13 [2022-11-02 21:09:43,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:09:43,966 INFO L495 AbstractCegarLoop]: Abstraction has 702 states and 2118 transitions. [2022-11-02 21:09:43,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:43,967 INFO L276 IsEmpty]: Start isEmpty. Operand 702 states and 2118 transitions. [2022-11-02 21:09:43,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-02 21:09:43,968 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:09:43,968 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:09:43,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-02 21:09:43,968 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-02 21:09:43,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:09:43,969 INFO L85 PathProgramCache]: Analyzing trace with hash -1356213333, now seen corresponding path program 1 times [2022-11-02 21:09:43,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:09:43,969 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552504983] [2022-11-02 21:09:43,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:09:43,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:09:43,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:44,032 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-02 21:09:44,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:09:44,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552504983] [2022-11-02 21:09:44,033 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552504983] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:09:44,033 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:09:44,033 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:09:44,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548087649] [2022-11-02 21:09:44,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:09:44,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:09:44,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:09:44,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:09:44,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:09:44,035 INFO L87 Difference]: Start difference. First operand 702 states and 2118 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:44,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:09:44,182 INFO L93 Difference]: Finished difference Result 876 states and 2449 transitions. [2022-11-02 21:09:44,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 21:09:44,182 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-02 21:09:44,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:09:44,188 INFO L225 Difference]: With dead ends: 876 [2022-11-02 21:09:44,189 INFO L226 Difference]: Without dead ends: 876 [2022-11-02 21:09:44,189 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:09:44,190 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 51 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:09:44,190 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 21 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:09:44,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 876 states. [2022-11-02 21:09:44,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 876 to 690. [2022-11-02 21:09:44,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 690 states, 675 states have (on average 3.031111111111111) internal successors, (2046), 689 states have internal predecessors, (2046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:44,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 690 states to 690 states and 2046 transitions. [2022-11-02 21:09:44,225 INFO L78 Accepts]: Start accepts. Automaton has 690 states and 2046 transitions. Word has length 17 [2022-11-02 21:09:44,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:09:44,226 INFO L495 AbstractCegarLoop]: Abstraction has 690 states and 2046 transitions. [2022-11-02 21:09:44,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:44,226 INFO L276 IsEmpty]: Start isEmpty. Operand 690 states and 2046 transitions. [2022-11-02 21:09:44,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-02 21:09:44,228 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:09:44,228 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:09:44,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-02 21:09:44,228 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-02 21:09:44,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:09:44,229 INFO L85 PathProgramCache]: Analyzing trace with hash -1356213332, now seen corresponding path program 1 times [2022-11-02 21:09:44,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:09:44,229 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991736570] [2022-11-02 21:09:44,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:09:44,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:09:44,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:44,293 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-02 21:09:44,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:09:44,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991736570] [2022-11-02 21:09:44,294 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991736570] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:09:44,294 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:09:44,294 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:09:44,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177311077] [2022-11-02 21:09:44,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:09:44,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:09:44,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:09:44,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:09:44,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:09:44,296 INFO L87 Difference]: Start difference. First operand 690 states and 2046 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:44,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:09:44,415 INFO L93 Difference]: Finished difference Result 792 states and 2193 transitions. [2022-11-02 21:09:44,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 21:09:44,415 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-02 21:09:44,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:09:44,430 INFO L225 Difference]: With dead ends: 792 [2022-11-02 21:09:44,431 INFO L226 Difference]: Without dead ends: 776 [2022-11-02 21:09:44,431 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:09:44,432 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 58 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:09:44,433 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 16 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:09:44,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 776 states. [2022-11-02 21:09:44,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 776 to 594. [2022-11-02 21:09:44,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 594 states, 581 states have (on average 2.981067125645439) internal successors, (1732), 593 states have internal predecessors, (1732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:44,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 594 states to 594 states and 1732 transitions. [2022-11-02 21:09:44,452 INFO L78 Accepts]: Start accepts. Automaton has 594 states and 1732 transitions. Word has length 17 [2022-11-02 21:09:44,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:09:44,454 INFO L495 AbstractCegarLoop]: Abstraction has 594 states and 1732 transitions. [2022-11-02 21:09:44,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:44,454 INFO L276 IsEmpty]: Start isEmpty. Operand 594 states and 1732 transitions. [2022-11-02 21:09:44,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-02 21:09:44,455 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:09:44,456 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:09:44,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-02 21:09:44,456 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-02 21:09:44,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:09:44,457 INFO L85 PathProgramCache]: Analyzing trace with hash 899901355, now seen corresponding path program 1 times [2022-11-02 21:09:44,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:09:44,457 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741510587] [2022-11-02 21:09:44,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:09:44,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:09:44,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 21:09:44,472 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 21:09:44,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 21:09:44,487 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 21:09:44,487 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-02 21:09:44,488 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (11 of 12 remaining) [2022-11-02 21:09:44,488 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 12 remaining) [2022-11-02 21:09:44,488 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 12 remaining) [2022-11-02 21:09:44,488 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 12 remaining) [2022-11-02 21:09:44,488 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 12 remaining) [2022-11-02 21:09:44,489 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 12 remaining) [2022-11-02 21:09:44,489 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 12 remaining) [2022-11-02 21:09:44,489 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 12 remaining) [2022-11-02 21:09:44,489 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 12 remaining) [2022-11-02 21:09:44,490 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 12 remaining) [2022-11-02 21:09:44,490 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 12 remaining) [2022-11-02 21:09:44,490 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 12 remaining) [2022-11-02 21:09:44,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-02 21:09:44,491 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:09:44,491 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-02 21:09:44,491 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-11-02 21:09:44,517 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-02 21:09:44,519 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-02 21:09:44,519 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 171 places, 159 transitions, 382 flow [2022-11-02 21:09:44,520 INFO L112 LiptonReduction]: Starting Lipton reduction on Petri net that has 171 places, 159 transitions, 382 flow [2022-11-02 21:09:44,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 171 places, 159 transitions, 382 flow [2022-11-02 21:09:44,548 INFO L130 PetriNetUnfolder]: 7/202 cut-off events. [2022-11-02 21:09:44,549 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2022-11-02 21:09:44,550 INFO L83 FinitePrefix]: Finished finitePrefix Result has 231 conditions, 202 events. 7/202 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 310 event pairs, 0 based on Foata normal form. 0/174 useless extension candidates. Maximal degree in co-relation 222. Up to 10 conditions per place. [2022-11-02 21:09:44,555 INFO L118 LiptonReduction]: Number of co-enabled transitions 4944 [2022-11-02 21:09:49,263 INFO L133 LiptonReduction]: Checked pairs total: 6728 [2022-11-02 21:09:49,263 INFO L135 LiptonReduction]: Total number of compositions: 161 [2022-11-02 21:09:49,264 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 57 places, 39 transitions, 142 flow [2022-11-02 21:09:50,049 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 12164 states, 11721 states have (on average 4.587577851719137) internal successors, (53771), 12163 states have internal predecessors, (53771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:50,050 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 21:09:50,051 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=FINITE_AUTOMATA, 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;@4198ccd5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 21:09:50,051 INFO L358 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2022-11-02 21:09:50,075 INFO L276 IsEmpty]: Start isEmpty. Operand has 12164 states, 11721 states have (on average 4.587577851719137) internal successors, (53771), 12163 states have internal predecessors, (53771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:50,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-02 21:09:50,076 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:09:50,076 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:09:50,077 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-02 21:09:50,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:09:50,078 INFO L85 PathProgramCache]: Analyzing trace with hash -1903767147, now seen corresponding path program 1 times [2022-11-02 21:09:50,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:09:50,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917848985] [2022-11-02 21:09:50,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:09:50,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:09:50,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:50,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:09:50,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:09:50,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917848985] [2022-11-02 21:09:50,171 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917848985] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:09:50,171 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:09:50,171 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-02 21:09:50,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083227663] [2022-11-02 21:09:50,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:09:50,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:09:50,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:09:50,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:09:50,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:09:50,193 INFO L87 Difference]: Start difference. First operand has 12164 states, 11721 states have (on average 4.587577851719137) internal successors, (53771), 12163 states have internal predecessors, (53771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:50,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:09:50,394 INFO L93 Difference]: Finished difference Result 7344 states and 28945 transitions. [2022-11-02 21:09:50,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:09:50,395 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-02 21:09:50,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:09:50,532 INFO L225 Difference]: With dead ends: 7344 [2022-11-02 21:09:50,532 INFO L226 Difference]: Without dead ends: 7298 [2022-11-02 21:09:50,534 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:09:50,535 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 14 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:09:50,537 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 5 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:09:50,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7298 states. [2022-11-02 21:09:50,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7298 to 7298. [2022-11-02 21:09:50,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7298 states, 6967 states have (on average 4.122290799483278) internal successors, (28720), 7297 states have internal predecessors, (28720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:50,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7298 states to 7298 states and 28720 transitions. [2022-11-02 21:09:50,958 INFO L78 Accepts]: Start accepts. Automaton has 7298 states and 28720 transitions. Word has length 7 [2022-11-02 21:09:50,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:09:50,958 INFO L495 AbstractCegarLoop]: Abstraction has 7298 states and 28720 transitions. [2022-11-02 21:09:50,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:50,959 INFO L276 IsEmpty]: Start isEmpty. Operand 7298 states and 28720 transitions. [2022-11-02 21:09:50,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-02 21:09:50,959 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:09:50,959 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:09:50,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-11-02 21:09:50,960 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-02 21:09:50,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:09:50,960 INFO L85 PathProgramCache]: Analyzing trace with hash 1112752770, now seen corresponding path program 1 times [2022-11-02 21:09:50,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:09:50,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625318069] [2022-11-02 21:09:50,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:09:50,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:09:51,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:51,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:09:51,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:09:51,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625318069] [2022-11-02 21:09:51,082 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625318069] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:09:51,082 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:09:51,083 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 21:09:51,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765959756] [2022-11-02 21:09:51,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:09:51,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:09:51,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:09:51,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:09:51,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:09:51,085 INFO L87 Difference]: Start difference. First operand 7298 states and 28720 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:51,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:09:51,229 INFO L93 Difference]: Finished difference Result 7286 states and 28694 transitions. [2022-11-02 21:09:51,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:09:51,230 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-02 21:09:51,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:09:51,415 INFO L225 Difference]: With dead ends: 7286 [2022-11-02 21:09:51,417 INFO L226 Difference]: Without dead ends: 7286 [2022-11-02 21:09:51,417 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:09:51,418 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 3 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:09:51,418 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 6 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:09:51,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7286 states. [2022-11-02 21:09:51,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7286 to 7286. [2022-11-02 21:09:51,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7286 states, 6957 states have (on average 4.124478942072733) internal successors, (28694), 7285 states have internal predecessors, (28694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:51,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7286 states to 7286 states and 28694 transitions. [2022-11-02 21:09:51,803 INFO L78 Accepts]: Start accepts. Automaton has 7286 states and 28694 transitions. Word has length 8 [2022-11-02 21:09:51,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:09:51,803 INFO L495 AbstractCegarLoop]: Abstraction has 7286 states and 28694 transitions. [2022-11-02 21:09:51,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:51,804 INFO L276 IsEmpty]: Start isEmpty. Operand 7286 states and 28694 transitions. [2022-11-02 21:09:51,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-02 21:09:51,804 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:09:51,805 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:09:51,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-11-02 21:09:51,805 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-02 21:09:51,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:09:51,806 INFO L85 PathProgramCache]: Analyzing trace with hash -1878709324, now seen corresponding path program 1 times [2022-11-02 21:09:51,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:09:51,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140934137] [2022-11-02 21:09:51,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:09:51,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:09:51,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:51,861 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:09:51,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:09:51,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140934137] [2022-11-02 21:09:51,861 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140934137] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:09:51,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [213069123] [2022-11-02 21:09:51,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:09:51,862 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:09:51,862 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff14c49-fc4e-42f8-8d54-e9dfec562d32/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:09:51,864 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff14c49-fc4e-42f8-8d54-e9dfec562d32/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:09:51,886 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff14c49-fc4e-42f8-8d54-e9dfec562d32/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-02 21:09:52,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:52,010 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 21:09:52,011 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:09:52,032 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:09:52,032 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:09:52,062 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:09:52,063 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [213069123] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:09:52,063 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 21:09:52,063 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-11-02 21:09:52,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680751836] [2022-11-02 21:09:52,064 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 21:09:52,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:09:52,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:09:52,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:09:52,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:09:52,066 INFO L87 Difference]: Start difference. First operand 7286 states and 28694 transitions. Second operand has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:52,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:09:52,414 INFO L93 Difference]: Finished difference Result 6352 states and 24917 transitions. [2022-11-02 21:09:52,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 21:09:52,415 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-02 21:09:52,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:09:52,467 INFO L225 Difference]: With dead ends: 6352 [2022-11-02 21:09:52,467 INFO L226 Difference]: Without dead ends: 6352 [2022-11-02 21:09:52,468 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:09:52,469 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 89 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:09:52,469 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 13 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 21:09:52,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6352 states. [2022-11-02 21:09:52,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6352 to 6352. [2022-11-02 21:09:52,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6352 states, 6112 states have (on average 4.076734293193717) internal successors, (24917), 6351 states have internal predecessors, (24917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:52,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6352 states to 6352 states and 24917 transitions. [2022-11-02 21:09:52,991 INFO L78 Accepts]: Start accepts. Automaton has 6352 states and 24917 transitions. Word has length 12 [2022-11-02 21:09:52,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:09:52,993 INFO L495 AbstractCegarLoop]: Abstraction has 6352 states and 24917 transitions. [2022-11-02 21:09:52,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:52,994 INFO L276 IsEmpty]: Start isEmpty. Operand 6352 states and 24917 transitions. [2022-11-02 21:09:52,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-02 21:09:52,994 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:09:52,995 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:09:53,038 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff14c49-fc4e-42f8-8d54-e9dfec562d32/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-02 21:09:53,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff14c49-fc4e-42f8-8d54-e9dfec562d32/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-11-02 21:09:53,212 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-02 21:09:53,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:09:53,213 INFO L85 PathProgramCache]: Analyzing trace with hash -1878709273, now seen corresponding path program 1 times [2022-11-02 21:09:53,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:09:53,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842516375] [2022-11-02 21:09:53,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:09:53,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:09:53,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:53,275 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:09:53,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:09:53,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842516375] [2022-11-02 21:09:53,276 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842516375] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:09:53,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1912785958] [2022-11-02 21:09:53,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:09:53,277 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:09:53,277 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff14c49-fc4e-42f8-8d54-e9dfec562d32/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:09:53,279 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff14c49-fc4e-42f8-8d54-e9dfec562d32/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:09:53,310 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff14c49-fc4e-42f8-8d54-e9dfec562d32/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-02 21:09:53,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:53,426 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 21:09:53,429 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:09:53,452 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:09:53,452 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:09:53,452 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1912785958] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:09:53,453 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 21:09:53,453 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2022-11-02 21:09:53,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847011160] [2022-11-02 21:09:53,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:09:53,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:09:53,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:09:53,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:09:53,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:09:53,455 INFO L87 Difference]: Start difference. First operand 6352 states and 24917 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:53,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:09:53,583 INFO L93 Difference]: Finished difference Result 5418 states and 21140 transitions. [2022-11-02 21:09:53,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 21:09:53,583 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-02 21:09:53,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:09:53,631 INFO L225 Difference]: With dead ends: 5418 [2022-11-02 21:09:53,631 INFO L226 Difference]: Without dead ends: 5418 [2022-11-02 21:09:53,632 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:09:53,632 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 43 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:09:53,634 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 6 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:09:53,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5418 states. [2022-11-02 21:09:53,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5418 to 5418. [2022-11-02 21:09:53,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5418 states, 5267 states have (on average 4.013670020884754) internal successors, (21140), 5417 states have internal predecessors, (21140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:54,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5418 states to 5418 states and 21140 transitions. [2022-11-02 21:09:54,015 INFO L78 Accepts]: Start accepts. Automaton has 5418 states and 21140 transitions. Word has length 12 [2022-11-02 21:09:54,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:09:54,015 INFO L495 AbstractCegarLoop]: Abstraction has 5418 states and 21140 transitions. [2022-11-02 21:09:54,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:54,016 INFO L276 IsEmpty]: Start isEmpty. Operand 5418 states and 21140 transitions. [2022-11-02 21:09:54,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-02 21:09:54,016 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:09:54,017 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:09:54,058 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff14c49-fc4e-42f8-8d54-e9dfec562d32/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-02 21:09:54,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff14c49-fc4e-42f8-8d54-e9dfec562d32/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-11-02 21:09:54,242 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-02 21:09:54,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:09:54,242 INFO L85 PathProgramCache]: Analyzing trace with hash 1408786364, now seen corresponding path program 1 times [2022-11-02 21:09:54,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:09:54,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778131492] [2022-11-02 21:09:54,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:09:54,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:09:54,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:54,311 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:09:54,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:09:54,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778131492] [2022-11-02 21:09:54,312 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778131492] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:09:54,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [40752234] [2022-11-02 21:09:54,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:09:54,313 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:09:54,313 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff14c49-fc4e-42f8-8d54-e9dfec562d32/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:09:54,314 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff14c49-fc4e-42f8-8d54-e9dfec562d32/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:09:54,322 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff14c49-fc4e-42f8-8d54-e9dfec562d32/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-02 21:09:54,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:54,465 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 21:09:54,466 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:09:54,503 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:09:54,503 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:09:54,503 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [40752234] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:09:54,504 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 21:09:54,504 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2022-11-02 21:09:54,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555654826] [2022-11-02 21:09:54,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:09:54,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:09:54,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:09:54,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:09:54,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:09:54,506 INFO L87 Difference]: Start difference. First operand 5418 states and 21140 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:54,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:09:54,783 INFO L93 Difference]: Finished difference Result 7942 states and 27116 transitions. [2022-11-02 21:09:54,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 21:09:54,784 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-02 21:09:54,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:09:54,834 INFO L225 Difference]: With dead ends: 7942 [2022-11-02 21:09:54,835 INFO L226 Difference]: Without dead ends: 7942 [2022-11-02 21:09:54,835 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-02 21:09:54,836 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 70 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:09:54,837 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 21 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 21:09:54,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7942 states. [2022-11-02 21:09:55,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7942 to 5718. [2022-11-02 21:09:55,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5718 states, 5585 states have (on average 3.866069829901522) internal successors, (21592), 5717 states have internal predecessors, (21592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:55,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5718 states to 5718 states and 21592 transitions. [2022-11-02 21:09:55,180 INFO L78 Accepts]: Start accepts. Automaton has 5718 states and 21592 transitions. Word has length 13 [2022-11-02 21:09:55,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:09:55,180 INFO L495 AbstractCegarLoop]: Abstraction has 5718 states and 21592 transitions. [2022-11-02 21:09:55,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:55,181 INFO L276 IsEmpty]: Start isEmpty. Operand 5718 states and 21592 transitions. [2022-11-02 21:09:55,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-02 21:09:55,181 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:09:55,181 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:09:55,229 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff14c49-fc4e-42f8-8d54-e9dfec562d32/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-02 21:09:55,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff14c49-fc4e-42f8-8d54-e9dfec562d32/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-11-02 21:09:55,399 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-02 21:09:55,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:09:55,400 INFO L85 PathProgramCache]: Analyzing trace with hash 1408786365, now seen corresponding path program 1 times [2022-11-02 21:09:55,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:09:55,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157150877] [2022-11-02 21:09:55,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:09:55,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:09:55,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:55,467 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:09:55,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:09:55,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157150877] [2022-11-02 21:09:55,468 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157150877] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:09:55,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1046160621] [2022-11-02 21:09:55,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:09:55,469 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:09:55,469 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff14c49-fc4e-42f8-8d54-e9dfec562d32/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:09:55,470 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff14c49-fc4e-42f8-8d54-e9dfec562d32/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:09:55,480 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff14c49-fc4e-42f8-8d54-e9dfec562d32/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-02 21:09:55,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:55,605 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 21:09:55,606 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:09:55,648 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:09:55,649 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:09:55,698 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:09:55,698 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1046160621] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:09:55,698 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 21:09:55,699 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 8 [2022-11-02 21:09:55,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740290820] [2022-11-02 21:09:55,699 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 21:09:55,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 21:09:55,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:09:55,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 21:09:55,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-02 21:09:55,701 INFO L87 Difference]: Start difference. First operand 5718 states and 21592 transitions. Second operand has 10 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 9 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:56,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:09:56,259 INFO L93 Difference]: Finished difference Result 8012 states and 26381 transitions. [2022-11-02 21:09:56,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 21:09:56,260 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 9 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-02 21:09:56,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:09:56,307 INFO L225 Difference]: With dead ends: 8012 [2022-11-02 21:09:56,307 INFO L226 Difference]: Without dead ends: 7998 [2022-11-02 21:09:56,307 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=101, Invalid=171, Unknown=0, NotChecked=0, Total=272 [2022-11-02 21:09:56,315 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 227 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 284 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 227 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 21:09:56,315 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [227 Valid, 31 Invalid, 312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 284 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 21:09:56,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7998 states. [2022-11-02 21:09:56,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7998 to 5218. [2022-11-02 21:09:56,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5218 states, 5129 states have (on average 3.77539481380386) internal successors, (19364), 5217 states have internal predecessors, (19364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:56,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5218 states to 5218 states and 19364 transitions. [2022-11-02 21:09:56,616 INFO L78 Accepts]: Start accepts. Automaton has 5218 states and 19364 transitions. Word has length 13 [2022-11-02 21:09:56,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:09:56,616 INFO L495 AbstractCegarLoop]: Abstraction has 5218 states and 19364 transitions. [2022-11-02 21:09:56,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 9 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:56,617 INFO L276 IsEmpty]: Start isEmpty. Operand 5218 states and 19364 transitions. [2022-11-02 21:09:56,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-02 21:09:56,618 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:09:56,618 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:09:56,663 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff14c49-fc4e-42f8-8d54-e9dfec562d32/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-02 21:09:56,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff14c49-fc4e-42f8-8d54-e9dfec562d32/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:09:56,833 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-02 21:09:56,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:09:56,833 INFO L85 PathProgramCache]: Analyzing trace with hash 1889834986, now seen corresponding path program 1 times [2022-11-02 21:09:56,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:09:56,834 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522918053] [2022-11-02 21:09:56,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:09:56,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:09:56,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:56,984 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 21:09:56,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:09:56,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522918053] [2022-11-02 21:09:56,985 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522918053] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:09:56,985 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:09:56,986 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:09:56,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766592114] [2022-11-02 21:09:56,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:09:56,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:09:56,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:09:56,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:09:56,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:09:56,988 INFO L87 Difference]: Start difference. First operand 5218 states and 19364 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:57,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:09:57,390 INFO L93 Difference]: Finished difference Result 7626 states and 26110 transitions. [2022-11-02 21:09:57,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 21:09:57,391 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-02 21:09:57,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:09:57,427 INFO L225 Difference]: With dead ends: 7626 [2022-11-02 21:09:57,427 INFO L226 Difference]: Without dead ends: 7626 [2022-11-02 21:09:57,427 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:09:57,428 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 86 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:09:57,428 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 21 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 21:09:57,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7626 states. [2022-11-02 21:09:57,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7626 to 5490. [2022-11-02 21:09:57,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5490 states, 5409 states have (on average 3.7962654834535035) internal successors, (20534), 5489 states have internal predecessors, (20534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:57,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5490 states to 5490 states and 20534 transitions. [2022-11-02 21:09:57,655 INFO L78 Accepts]: Start accepts. Automaton has 5490 states and 20534 transitions. Word has length 13 [2022-11-02 21:09:57,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:09:57,656 INFO L495 AbstractCegarLoop]: Abstraction has 5490 states and 20534 transitions. [2022-11-02 21:09:57,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:57,656 INFO L276 IsEmpty]: Start isEmpty. Operand 5490 states and 20534 transitions. [2022-11-02 21:09:57,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-02 21:09:57,657 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:09:57,657 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:09:57,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-11-02 21:09:57,658 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-02 21:09:57,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:09:57,659 INFO L85 PathProgramCache]: Analyzing trace with hash 1889834971, now seen corresponding path program 1 times [2022-11-02 21:09:57,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:09:57,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268855160] [2022-11-02 21:09:57,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:09:57,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:09:57,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:57,737 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 21:09:57,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:09:57,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268855160] [2022-11-02 21:09:57,738 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268855160] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:09:57,738 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:09:57,738 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:09:57,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325937482] [2022-11-02 21:09:57,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:09:57,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:09:57,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:09:57,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:09:57,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:09:57,741 INFO L87 Difference]: Start difference. First operand 5490 states and 20534 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:58,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:09:58,040 INFO L93 Difference]: Finished difference Result 6946 states and 23666 transitions. [2022-11-02 21:09:58,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 21:09:58,041 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-02 21:09:58,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:09:58,075 INFO L225 Difference]: With dead ends: 6946 [2022-11-02 21:09:58,075 INFO L226 Difference]: Without dead ends: 6916 [2022-11-02 21:09:58,076 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:09:58,077 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 88 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:09:58,077 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 16 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 21:09:58,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6916 states. [2022-11-02 21:09:58,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6916 to 4946. [2022-11-02 21:09:58,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4946 states, 4869 states have (on average 3.7531320599712465) internal successors, (18274), 4945 states have internal predecessors, (18274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:58,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4946 states to 4946 states and 18274 transitions. [2022-11-02 21:09:58,279 INFO L78 Accepts]: Start accepts. Automaton has 4946 states and 18274 transitions. Word has length 13 [2022-11-02 21:09:58,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:09:58,280 INFO L495 AbstractCegarLoop]: Abstraction has 4946 states and 18274 transitions. [2022-11-02 21:09:58,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:58,280 INFO L276 IsEmpty]: Start isEmpty. Operand 4946 states and 18274 transitions. [2022-11-02 21:09:58,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-02 21:09:58,282 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:09:58,282 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:09:58,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-11-02 21:09:58,283 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-02 21:09:58,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:09:58,284 INFO L85 PathProgramCache]: Analyzing trace with hash -133226796, now seen corresponding path program 1 times [2022-11-02 21:09:58,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:09:58,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591752877] [2022-11-02 21:09:58,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:09:58,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:09:58,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:58,377 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-02 21:09:58,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:09:58,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591752877] [2022-11-02 21:09:58,377 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591752877] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:09:58,378 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:09:58,378 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:09:58,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956368494] [2022-11-02 21:09:58,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:09:58,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:09:58,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:09:58,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:09:58,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:09:58,380 INFO L87 Difference]: Start difference. First operand 4946 states and 18274 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:58,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:09:58,706 INFO L93 Difference]: Finished difference Result 6748 states and 23095 transitions. [2022-11-02 21:09:58,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 21:09:58,707 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-02 21:09:58,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:09:58,737 INFO L225 Difference]: With dead ends: 6748 [2022-11-02 21:09:58,737 INFO L226 Difference]: Without dead ends: 6748 [2022-11-02 21:09:58,738 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:09:58,738 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 81 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:09:58,739 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 21 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 21:09:58,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6748 states. [2022-11-02 21:09:58,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6748 to 4980. [2022-11-02 21:09:58,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4980 states, 4910 states have (on average 3.7391038696537677) internal successors, (18359), 4979 states have internal predecessors, (18359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:58,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4980 states to 4980 states and 18359 transitions. [2022-11-02 21:09:58,941 INFO L78 Accepts]: Start accepts. Automaton has 4980 states and 18359 transitions. Word has length 17 [2022-11-02 21:09:58,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:09:58,941 INFO L495 AbstractCegarLoop]: Abstraction has 4980 states and 18359 transitions. [2022-11-02 21:09:58,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:58,943 INFO L276 IsEmpty]: Start isEmpty. Operand 4980 states and 18359 transitions. [2022-11-02 21:09:58,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-02 21:09:58,944 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:09:58,944 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:09:58,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-11-02 21:09:58,945 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-02 21:09:58,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:09:58,946 INFO L85 PathProgramCache]: Analyzing trace with hash -133226795, now seen corresponding path program 1 times [2022-11-02 21:09:58,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:09:58,946 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350161665] [2022-11-02 21:09:58,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:09:58,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:09:58,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:59,037 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-02 21:09:59,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:09:59,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350161665] [2022-11-02 21:09:59,038 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350161665] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:09:59,038 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:09:59,038 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:09:59,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820500957] [2022-11-02 21:09:59,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:09:59,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:09:59,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:09:59,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:09:59,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:09:59,041 INFO L87 Difference]: Start difference. First operand 4980 states and 18359 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:59,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:09:59,244 INFO L93 Difference]: Finished difference Result 6070 states and 20580 transitions. [2022-11-02 21:09:59,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 21:09:59,245 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-02 21:09:59,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:09:59,270 INFO L225 Difference]: With dead ends: 6070 [2022-11-02 21:09:59,271 INFO L226 Difference]: Without dead ends: 6026 [2022-11-02 21:09:59,271 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:09:59,271 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 92 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:09:59,272 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 14 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:09:59,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6026 states. [2022-11-02 21:09:59,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6026 to 4308. [2022-11-02 21:09:59,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4308 states, 4245 states have (on average 3.7081272084805654) internal successors, (15741), 4307 states have internal predecessors, (15741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:59,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4308 states to 4308 states and 15741 transitions. [2022-11-02 21:09:59,432 INFO L78 Accepts]: Start accepts. Automaton has 4308 states and 15741 transitions. Word has length 17 [2022-11-02 21:09:59,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:09:59,432 INFO L495 AbstractCegarLoop]: Abstraction has 4308 states and 15741 transitions. [2022-11-02 21:09:59,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:59,433 INFO L276 IsEmpty]: Start isEmpty. Operand 4308 states and 15741 transitions. [2022-11-02 21:09:59,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-02 21:09:59,434 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:09:59,434 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:09:59,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-11-02 21:09:59,435 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-02 21:09:59,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:09:59,435 INFO L85 PathProgramCache]: Analyzing trace with hash 1666297825, now seen corresponding path program 1 times [2022-11-02 21:09:59,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:09:59,436 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131599892] [2022-11-02 21:09:59,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:09:59,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:09:59,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:59,557 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:09:59,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:09:59,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131599892] [2022-11-02 21:09:59,558 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131599892] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:09:59,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2012143411] [2022-11-02 21:09:59,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:09:59,559 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:09:59,559 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff14c49-fc4e-42f8-8d54-e9dfec562d32/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:09:59,563 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff14c49-fc4e-42f8-8d54-e9dfec562d32/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:09:59,573 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff14c49-fc4e-42f8-8d54-e9dfec562d32/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-02 21:09:59,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:59,736 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-02 21:09:59,738 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:09:59,793 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:09:59,794 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:09:59,891 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:09:59,892 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2012143411] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:09:59,892 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 21:09:59,892 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2022-11-02 21:09:59,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212385066] [2022-11-02 21:09:59,893 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 21:09:59,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-02 21:09:59,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:09:59,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-02 21:09:59,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2022-11-02 21:09:59,895 INFO L87 Difference]: Start difference. First operand 4308 states and 15741 transitions. Second operand has 14 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 13 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:00,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:10:00,967 INFO L93 Difference]: Finished difference Result 9070 states and 28068 transitions. [2022-11-02 21:10:00,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-02 21:10:00,967 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 13 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-11-02 21:10:00,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:10:01,008 INFO L225 Difference]: With dead ends: 9070 [2022-11-02 21:10:01,009 INFO L226 Difference]: Without dead ends: 9070 [2022-11-02 21:10:01,010 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 389 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=447, Invalid=1113, Unknown=0, NotChecked=0, Total=1560 [2022-11-02 21:10:01,010 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 410 mSDsluCounter, 341 mSDsCounter, 0 mSdLazyCounter, 667 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 410 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 740 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 667 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-02 21:10:01,011 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [410 Valid, 96 Invalid, 740 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 667 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-02 21:10:01,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9070 states. [2022-11-02 21:10:01,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9070 to 4442. [2022-11-02 21:10:01,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4442 states, 4382 states have (on average 3.702875399361022) internal successors, (16226), 4441 states have internal predecessors, (16226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:01,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4442 states to 4442 states and 16226 transitions. [2022-11-02 21:10:01,265 INFO L78 Accepts]: Start accepts. Automaton has 4442 states and 16226 transitions. Word has length 19 [2022-11-02 21:10:01,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:10:01,265 INFO L495 AbstractCegarLoop]: Abstraction has 4442 states and 16226 transitions. [2022-11-02 21:10:01,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 13 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:01,266 INFO L276 IsEmpty]: Start isEmpty. Operand 4442 states and 16226 transitions. [2022-11-02 21:10:01,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-02 21:10:01,268 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:10:01,268 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:10:01,317 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff14c49-fc4e-42f8-8d54-e9dfec562d32/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-02 21:10:01,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff14c49-fc4e-42f8-8d54-e9dfec562d32/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:10:01,483 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-02 21:10:01,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:10:01,483 INFO L85 PathProgramCache]: Analyzing trace with hash 1666297844, now seen corresponding path program 1 times [2022-11-02 21:10:01,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:10:01,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843653060] [2022-11-02 21:10:01,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:10:01,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:10:01,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:01,600 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:10:01,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:10:01,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843653060] [2022-11-02 21:10:01,601 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843653060] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:10:01,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1185006645] [2022-11-02 21:10:01,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:10:01,602 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:10:01,602 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff14c49-fc4e-42f8-8d54-e9dfec562d32/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:10:01,603 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff14c49-fc4e-42f8-8d54-e9dfec562d32/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:10:01,630 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff14c49-fc4e-42f8-8d54-e9dfec562d32/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-02 21:10:01,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:01,782 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-02 21:10:01,785 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:10:01,836 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:10:01,836 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:10:01,837 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1185006645] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:10:01,837 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 21:10:01,837 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-02 21:10:01,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007237836] [2022-11-02 21:10:01,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:10:01,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:10:01,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:10:01,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:10:01,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-11-02 21:10:01,840 INFO L87 Difference]: Start difference. First operand 4442 states and 16226 transitions. Second operand has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:02,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:10:02,286 INFO L93 Difference]: Finished difference Result 6578 states and 21664 transitions. [2022-11-02 21:10:02,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-02 21:10:02,286 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-11-02 21:10:02,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:10:02,315 INFO L225 Difference]: With dead ends: 6578 [2022-11-02 21:10:02,315 INFO L226 Difference]: Without dead ends: 6560 [2022-11-02 21:10:02,315 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=170, Unknown=0, NotChecked=0, Total=240 [2022-11-02 21:10:02,316 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 141 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 344 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 21:10:02,316 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 47 Invalid, 370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 344 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 21:10:02,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6560 states. [2022-11-02 21:10:02,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6560 to 4320. [2022-11-02 21:10:02,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4320 states, 4260 states have (on average 3.702112676056338) internal successors, (15771), 4319 states have internal predecessors, (15771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:02,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4320 states to 4320 states and 15771 transitions. [2022-11-02 21:10:02,493 INFO L78 Accepts]: Start accepts. Automaton has 4320 states and 15771 transitions. Word has length 19 [2022-11-02 21:10:02,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:10:02,494 INFO L495 AbstractCegarLoop]: Abstraction has 4320 states and 15771 transitions. [2022-11-02 21:10:02,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:02,494 INFO L276 IsEmpty]: Start isEmpty. Operand 4320 states and 15771 transitions. [2022-11-02 21:10:02,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-02 21:10:02,496 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:10:02,496 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:10:02,531 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff14c49-fc4e-42f8-8d54-e9dfec562d32/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-02 21:10:02,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff14c49-fc4e-42f8-8d54-e9dfec562d32/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2022-11-02 21:10:02,697 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-02 21:10:02,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:10:02,697 INFO L85 PathProgramCache]: Analyzing trace with hash -1917960023, now seen corresponding path program 1 times [2022-11-02 21:10:02,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:10:02,698 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187007168] [2022-11-02 21:10:02,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:10:02,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:10:02,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:02,810 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-02 21:10:02,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:10:02,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187007168] [2022-11-02 21:10:02,811 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187007168] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:10:02,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [115643183] [2022-11-02 21:10:02,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:10:02,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:10:02,813 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff14c49-fc4e-42f8-8d54-e9dfec562d32/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:10:02,814 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff14c49-fc4e-42f8-8d54-e9dfec562d32/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:10:02,842 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff14c49-fc4e-42f8-8d54-e9dfec562d32/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-02 21:10:02,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:03,000 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-02 21:10:03,001 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:10:03,060 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-02 21:10:03,060 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:10:03,061 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [115643183] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:10:03,061 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 21:10:03,061 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-02 21:10:03,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493849517] [2022-11-02 21:10:03,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:10:03,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:10:03,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:10:03,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:10:03,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-11-02 21:10:03,065 INFO L87 Difference]: Start difference. First operand 4320 states and 15771 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:03,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:10:03,514 INFO L93 Difference]: Finished difference Result 6240 states and 20605 transitions. [2022-11-02 21:10:03,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-02 21:10:03,514 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-11-02 21:10:03,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:10:03,539 INFO L225 Difference]: With dead ends: 6240 [2022-11-02 21:10:03,539 INFO L226 Difference]: Without dead ends: 6240 [2022-11-02 21:10:03,540 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=170, Unknown=0, NotChecked=0, Total=240 [2022-11-02 21:10:03,540 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 154 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 345 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 21:10:03,541 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 46 Invalid, 366 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 345 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 21:10:03,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6240 states. [2022-11-02 21:10:03,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6240 to 4474. [2022-11-02 21:10:03,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4474 states, 4414 states have (on average 3.6859990937924785) internal successors, (16270), 4473 states have internal predecessors, (16270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:03,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4474 states to 4474 states and 16270 transitions. [2022-11-02 21:10:03,743 INFO L78 Accepts]: Start accepts. Automaton has 4474 states and 16270 transitions. Word has length 19 [2022-11-02 21:10:03,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:10:03,743 INFO L495 AbstractCegarLoop]: Abstraction has 4474 states and 16270 transitions. [2022-11-02 21:10:03,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:03,744 INFO L276 IsEmpty]: Start isEmpty. Operand 4474 states and 16270 transitions. [2022-11-02 21:10:03,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-02 21:10:03,745 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:10:03,746 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:10:03,776 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff14c49-fc4e-42f8-8d54-e9dfec562d32/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-02 21:10:03,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff14c49-fc4e-42f8-8d54-e9dfec562d32/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2022-11-02 21:10:03,954 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-02 21:10:03,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:10:03,955 INFO L85 PathProgramCache]: Analyzing trace with hash -1917960022, now seen corresponding path program 1 times [2022-11-02 21:10:03,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:10:03,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685251229] [2022-11-02 21:10:03,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:10:03,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:10:03,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:04,079 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-02 21:10:04,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:10:04,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685251229] [2022-11-02 21:10:04,080 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685251229] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:10:04,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1852397732] [2022-11-02 21:10:04,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:10:04,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:10:04,082 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff14c49-fc4e-42f8-8d54-e9dfec562d32/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:10:04,083 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff14c49-fc4e-42f8-8d54-e9dfec562d32/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:10:04,087 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff14c49-fc4e-42f8-8d54-e9dfec562d32/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-02 21:10:04,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:04,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-02 21:10:04,259 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:10:04,318 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-02 21:10:04,319 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:10:04,410 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-02 21:10:04,411 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1852397732] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:10:04,411 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 21:10:04,411 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2022-11-02 21:10:04,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291116804] [2022-11-02 21:10:04,412 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 21:10:04,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-02 21:10:04,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:10:04,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-02 21:10:04,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2022-11-02 21:10:04,414 INFO L87 Difference]: Start difference. First operand 4474 states and 16270 transitions. Second operand has 14 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:05,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:10:05,354 INFO L93 Difference]: Finished difference Result 8392 states and 26005 transitions. [2022-11-02 21:10:05,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-02 21:10:05,355 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-11-02 21:10:05,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:10:05,386 INFO L225 Difference]: With dead ends: 8392 [2022-11-02 21:10:05,386 INFO L226 Difference]: Without dead ends: 8368 [2022-11-02 21:10:05,387 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 323 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=410, Invalid=996, Unknown=0, NotChecked=0, Total=1406 [2022-11-02 21:10:05,387 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 445 mSDsluCounter, 267 mSDsCounter, 0 mSdLazyCounter, 579 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 445 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 631 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 579 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-02 21:10:05,388 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [445 Valid, 79 Invalid, 631 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 579 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-02 21:10:05,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8368 states. [2022-11-02 21:10:05,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8368 to 4194. [2022-11-02 21:10:05,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4194 states, 4137 states have (on average 3.700265893159294) internal successors, (15308), 4193 states have internal predecessors, (15308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:05,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4194 states to 4194 states and 15308 transitions. [2022-11-02 21:10:05,568 INFO L78 Accepts]: Start accepts. Automaton has 4194 states and 15308 transitions. Word has length 19 [2022-11-02 21:10:05,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:10:05,569 INFO L495 AbstractCegarLoop]: Abstraction has 4194 states and 15308 transitions. [2022-11-02 21:10:05,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:05,569 INFO L276 IsEmpty]: Start isEmpty. Operand 4194 states and 15308 transitions. [2022-11-02 21:10:05,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-02 21:10:05,570 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:10:05,571 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:10:05,605 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff14c49-fc4e-42f8-8d54-e9dfec562d32/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-02 21:10:05,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff14c49-fc4e-42f8-8d54-e9dfec562d32/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2022-11-02 21:10:05,771 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-02 21:10:05,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:10:05,772 INFO L85 PathProgramCache]: Analyzing trace with hash 245060212, now seen corresponding path program 2 times [2022-11-02 21:10:05,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:10:05,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61250994] [2022-11-02 21:10:05,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:10:05,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:10:05,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:05,896 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 21:10:05,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:10:05,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61250994] [2022-11-02 21:10:05,897 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61250994] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:10:05,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1998574562] [2022-11-02 21:10:05,897 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 21:10:05,897 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:10:05,898 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff14c49-fc4e-42f8-8d54-e9dfec562d32/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:10:05,899 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff14c49-fc4e-42f8-8d54-e9dfec562d32/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:10:05,930 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff14c49-fc4e-42f8-8d54-e9dfec562d32/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-02 21:10:06,082 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 21:10:06,082 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 21:10:06,084 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-02 21:10:06,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:10:06,143 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 21:10:06,143 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:10:06,144 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1998574562] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:10:06,144 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 21:10:06,144 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-02 21:10:06,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629866055] [2022-11-02 21:10:06,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:10:06,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:10:06,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:10:06,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:10:06,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-11-02 21:10:06,147 INFO L87 Difference]: Start difference. First operand 4194 states and 15308 transitions. Second operand has 7 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:06,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:10:06,650 INFO L93 Difference]: Finished difference Result 6466 states and 21176 transitions. [2022-11-02 21:10:06,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-02 21:10:06,651 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-11-02 21:10:06,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:10:06,686 INFO L225 Difference]: With dead ends: 6466 [2022-11-02 21:10:06,687 INFO L226 Difference]: Without dead ends: 6448 [2022-11-02 21:10:06,687 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=170, Unknown=0, NotChecked=0, Total=240 [2022-11-02 21:10:06,688 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 136 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 351 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 351 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 21:10:06,688 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 51 Invalid, 375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 351 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 21:10:06,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6448 states. [2022-11-02 21:10:06,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6448 to 3972. [2022-11-02 21:10:06,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3972 states, 3918 states have (on average 3.7128637059724348) internal successors, (14547), 3971 states have internal predecessors, (14547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:06,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3972 states to 3972 states and 14547 transitions. [2022-11-02 21:10:06,899 INFO L78 Accepts]: Start accepts. Automaton has 3972 states and 14547 transitions. Word has length 19 [2022-11-02 21:10:06,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:10:06,900 INFO L495 AbstractCegarLoop]: Abstraction has 3972 states and 14547 transitions. [2022-11-02 21:10:06,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:06,900 INFO L276 IsEmpty]: Start isEmpty. Operand 3972 states and 14547 transitions. [2022-11-02 21:10:06,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-02 21:10:06,902 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:10:06,902 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:10:06,952 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff14c49-fc4e-42f8-8d54-e9dfec562d32/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-02 21:10:07,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff14c49-fc4e-42f8-8d54-e9dfec562d32/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2022-11-02 21:10:07,127 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-02 21:10:07,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:10:07,127 INFO L85 PathProgramCache]: Analyzing trace with hash 726141783, now seen corresponding path program 1 times [2022-11-02 21:10:07,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:10:07,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547935024] [2022-11-02 21:10:07,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:10:07,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:10:07,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:07,281 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 21:10:07,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:10:07,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547935024] [2022-11-02 21:10:07,282 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547935024] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:10:07,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [534114392] [2022-11-02 21:10:07,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:10:07,283 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:10:07,283 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff14c49-fc4e-42f8-8d54-e9dfec562d32/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:10:07,285 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff14c49-fc4e-42f8-8d54-e9dfec562d32/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:10:07,289 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff14c49-fc4e-42f8-8d54-e9dfec562d32/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-02 21:10:07,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:07,460 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 21:10:07,461 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:10:07,510 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 21:10:07,510 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:10:07,511 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [534114392] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:10:07,511 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 21:10:07,511 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 9 [2022-11-02 21:10:07,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196141937] [2022-11-02 21:10:07,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:10:07,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:10:07,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:10:07,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:10:07,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-11-02 21:10:07,516 INFO L87 Difference]: Start difference. First operand 3972 states and 14547 transitions. Second operand has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:07,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:10:07,774 INFO L93 Difference]: Finished difference Result 4518 states and 15098 transitions. [2022-11-02 21:10:07,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 21:10:07,775 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-11-02 21:10:07,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:10:07,797 INFO L225 Difference]: With dead ends: 4518 [2022-11-02 21:10:07,798 INFO L226 Difference]: Without dead ends: 4518 [2022-11-02 21:10:07,798 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2022-11-02 21:10:07,799 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 64 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:10:07,799 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 20 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 21:10:07,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4518 states. [2022-11-02 21:10:07,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4518 to 3190. [2022-11-02 21:10:07,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3190 states, 3159 states have (on average 3.6150680595125038) internal successors, (11420), 3189 states have internal predecessors, (11420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:07,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3190 states to 3190 states and 11420 transitions. [2022-11-02 21:10:07,925 INFO L78 Accepts]: Start accepts. Automaton has 3190 states and 11420 transitions. Word has length 19 [2022-11-02 21:10:07,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:10:07,925 INFO L495 AbstractCegarLoop]: Abstraction has 3190 states and 11420 transitions. [2022-11-02 21:10:07,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:07,925 INFO L276 IsEmpty]: Start isEmpty. Operand 3190 states and 11420 transitions. [2022-11-02 21:10:07,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-02 21:10:07,927 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:10:07,928 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:10:07,980 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff14c49-fc4e-42f8-8d54-e9dfec562d32/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-02 21:10:08,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff14c49-fc4e-42f8-8d54-e9dfec562d32/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2022-11-02 21:10:08,143 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-02 21:10:08,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:10:08,143 INFO L85 PathProgramCache]: Analyzing trace with hash 726141768, now seen corresponding path program 1 times [2022-11-02 21:10:08,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:10:08,143 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760584566] [2022-11-02 21:10:08,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:10:08,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:10:08,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:08,252 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 21:10:08,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:10:08,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760584566] [2022-11-02 21:10:08,253 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760584566] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:10:08,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1893374640] [2022-11-02 21:10:08,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:10:08,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:10:08,254 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff14c49-fc4e-42f8-8d54-e9dfec562d32/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:10:08,255 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff14c49-fc4e-42f8-8d54-e9dfec562d32/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:10:08,295 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff14c49-fc4e-42f8-8d54-e9dfec562d32/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-02 21:10:08,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:08,449 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-02 21:10:08,457 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:10:08,508 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 21:10:08,508 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:10:08,615 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 21:10:08,615 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1893374640] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:10:08,615 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 21:10:08,616 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2022-11-02 21:10:08,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351381612] [2022-11-02 21:10:08,616 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 21:10:08,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-02 21:10:08,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:10:08,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-02 21:10:08,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2022-11-02 21:10:08,618 INFO L87 Difference]: Start difference. First operand 3190 states and 11420 transitions. Second operand has 14 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 13 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:09,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:10:09,477 INFO L93 Difference]: Finished difference Result 6406 states and 19988 transitions. [2022-11-02 21:10:09,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-02 21:10:09,478 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 13 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-11-02 21:10:09,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:10:09,509 INFO L225 Difference]: With dead ends: 6406 [2022-11-02 21:10:09,510 INFO L226 Difference]: Without dead ends: 6364 [2022-11-02 21:10:09,517 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 298 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=393, Invalid=939, Unknown=0, NotChecked=0, Total=1332 [2022-11-02 21:10:09,524 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 412 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 464 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 412 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 518 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 464 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-02 21:10:09,524 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [412 Valid, 75 Invalid, 518 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 464 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-02 21:10:09,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6364 states. [2022-11-02 21:10:09,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6364 to 3020. [2022-11-02 21:10:09,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3020 states, 2992 states have (on average 3.6193181818181817) internal successors, (10829), 3019 states have internal predecessors, (10829), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:09,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3020 states to 3020 states and 10829 transitions. [2022-11-02 21:10:09,712 INFO L78 Accepts]: Start accepts. Automaton has 3020 states and 10829 transitions. Word has length 19 [2022-11-02 21:10:09,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:10:09,713 INFO L495 AbstractCegarLoop]: Abstraction has 3020 states and 10829 transitions. [2022-11-02 21:10:09,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 13 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:09,714 INFO L276 IsEmpty]: Start isEmpty. Operand 3020 states and 10829 transitions. [2022-11-02 21:10:09,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-02 21:10:09,719 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:10:09,719 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:10:09,769 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff14c49-fc4e-42f8-8d54-e9dfec562d32/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-02 21:10:09,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff14c49-fc4e-42f8-8d54-e9dfec562d32/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:10:09,943 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-02 21:10:09,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:10:09,943 INFO L85 PathProgramCache]: Analyzing trace with hash 818099241, now seen corresponding path program 2 times [2022-11-02 21:10:09,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:10:09,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850212350] [2022-11-02 21:10:09,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:10:09,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:10:09,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:10,047 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-02 21:10:10,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:10:10,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850212350] [2022-11-02 21:10:10,048 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850212350] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:10:10,048 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:10:10,048 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 21:10:10,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917571218] [2022-11-02 21:10:10,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:10:10,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:10:10,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:10:10,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:10:10,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:10:10,050 INFO L87 Difference]: Start difference. First operand 3020 states and 10829 transitions. Second operand has 7 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:10,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:10:10,486 INFO L93 Difference]: Finished difference Result 4656 states and 15031 transitions. [2022-11-02 21:10:10,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-02 21:10:10,486 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-11-02 21:10:10,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:10:10,503 INFO L225 Difference]: With dead ends: 4656 [2022-11-02 21:10:10,503 INFO L226 Difference]: Without dead ends: 4630 [2022-11-02 21:10:10,503 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2022-11-02 21:10:10,504 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 140 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 355 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 21:10:10,504 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 52 Invalid, 373 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 355 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 21:10:10,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4630 states. [2022-11-02 21:10:10,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4630 to 2738. [2022-11-02 21:10:10,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2738 states, 2713 states have (on average 3.657206044968669) internal successors, (9922), 2737 states have internal predecessors, (9922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:10,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2738 states to 2738 states and 9922 transitions. [2022-11-02 21:10:10,617 INFO L78 Accepts]: Start accepts. Automaton has 2738 states and 9922 transitions. Word has length 19 [2022-11-02 21:10:10,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:10:10,617 INFO L495 AbstractCegarLoop]: Abstraction has 2738 states and 9922 transitions. [2022-11-02 21:10:10,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:10,618 INFO L276 IsEmpty]: Start isEmpty. Operand 2738 states and 9922 transitions. [2022-11-02 21:10:10,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-02 21:10:10,620 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:10:10,621 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:10:10,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-11-02 21:10:10,621 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-02 21:10:10,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:10:10,622 INFO L85 PathProgramCache]: Analyzing trace with hash 2007795321, now seen corresponding path program 1 times [2022-11-02 21:10:10,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:10:10,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834392051] [2022-11-02 21:10:10,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:10:10,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:10:10,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:10,710 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-02 21:10:10,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:10:10,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834392051] [2022-11-02 21:10:10,711 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834392051] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:10:10,711 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:10:10,712 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:10:10,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764764579] [2022-11-02 21:10:10,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:10:10,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:10:10,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:10:10,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:10:10,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:10:10,714 INFO L87 Difference]: Start difference. First operand 2738 states and 9922 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:10,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:10:10,879 INFO L93 Difference]: Finished difference Result 3422 states and 11652 transitions. [2022-11-02 21:10:10,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 21:10:10,880 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-11-02 21:10:10,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:10:10,892 INFO L225 Difference]: With dead ends: 3422 [2022-11-02 21:10:10,892 INFO L226 Difference]: Without dead ends: 3374 [2022-11-02 21:10:10,892 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:10:10,893 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 81 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:10:10,894 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 14 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:10:10,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3374 states. [2022-11-02 21:10:10,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3374 to 2516. [2022-11-02 21:10:10,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2516 states, 2493 states have (on average 3.6185318892900122) internal successors, (9021), 2515 states have internal predecessors, (9021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:10,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2516 states to 2516 states and 9021 transitions. [2022-11-02 21:10:10,997 INFO L78 Accepts]: Start accepts. Automaton has 2516 states and 9021 transitions. Word has length 21 [2022-11-02 21:10:10,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:10:10,997 INFO L495 AbstractCegarLoop]: Abstraction has 2516 states and 9021 transitions. [2022-11-02 21:10:10,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:10,998 INFO L276 IsEmpty]: Start isEmpty. Operand 2516 states and 9021 transitions. [2022-11-02 21:10:11,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-02 21:10:11,002 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:10:11,002 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:10:11,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-11-02 21:10:11,002 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-02 21:10:11,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:10:11,003 INFO L85 PathProgramCache]: Analyzing trace with hash 2104464082, now seen corresponding path program 1 times [2022-11-02 21:10:11,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:10:11,003 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200497599] [2022-11-02 21:10:11,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:10:11,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:10:11,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 21:10:11,022 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 21:10:11,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 21:10:11,041 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 21:10:11,042 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-02 21:10:11,042 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (13 of 14 remaining) [2022-11-02 21:10:11,042 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 14 remaining) [2022-11-02 21:10:11,043 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 14 remaining) [2022-11-02 21:10:11,043 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 14 remaining) [2022-11-02 21:10:11,043 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 14 remaining) [2022-11-02 21:10:11,043 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 14 remaining) [2022-11-02 21:10:11,044 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 14 remaining) [2022-11-02 21:10:11,044 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 14 remaining) [2022-11-02 21:10:11,044 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 14 remaining) [2022-11-02 21:10:11,044 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 14 remaining) [2022-11-02 21:10:11,045 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 14 remaining) [2022-11-02 21:10:11,045 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 14 remaining) [2022-11-02 21:10:11,045 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 14 remaining) [2022-11-02 21:10:11,045 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 14 remaining) [2022-11-02 21:10:11,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-11-02 21:10:11,046 INFO L444 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:10:11,047 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-02 21:10:11,047 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2022-11-02 21:10:11,082 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-02 21:10:11,086 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-02 21:10:11,086 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 198 places, 183 transitions, 456 flow [2022-11-02 21:10:11,086 INFO L112 LiptonReduction]: Starting Lipton reduction on Petri net that has 198 places, 183 transitions, 456 flow [2022-11-02 21:10:11,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 198 places, 183 transitions, 456 flow [2022-11-02 21:10:11,133 INFO L130 PetriNetUnfolder]: 8/236 cut-off events. [2022-11-02 21:10:11,133 INFO L131 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2022-11-02 21:10:11,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 274 conditions, 236 events. 8/236 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 370 event pairs, 0 based on Foata normal form. 0/202 useless extension candidates. Maximal degree in co-relation 263. Up to 12 conditions per place. [2022-11-02 21:10:11,144 INFO L118 LiptonReduction]: Number of co-enabled transitions 6568 [2022-11-02 21:10:15,831 INFO L133 LiptonReduction]: Checked pairs total: 8567 [2022-11-02 21:10:15,832 INFO L135 LiptonReduction]: Total number of compositions: 185 [2022-11-02 21:10:15,832 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 68 places, 46 transitions, 182 flow [2022-11-02 21:10:18,558 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 60916 states, 59576 states have (on average 5.3358902913925075) internal successors, (317891), 60915 states have internal predecessors, (317891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:18,559 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 21:10:18,560 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=FINITE_AUTOMATA, 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;@4198ccd5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 21:10:18,560 INFO L358 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2022-11-02 21:10:18,716 INFO L276 IsEmpty]: Start isEmpty. Operand has 60916 states, 59576 states have (on average 5.3358902913925075) internal successors, (317891), 60915 states have internal predecessors, (317891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:18,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-02 21:10:18,717 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:10:18,717 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:10:18,717 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-11-02 21:10:18,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:10:18,718 INFO L85 PathProgramCache]: Analyzing trace with hash 351549571, now seen corresponding path program 1 times [2022-11-02 21:10:18,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:10:18,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612379322] [2022-11-02 21:10:18,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:10:18,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:10:18,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:18,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:10:18,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:10:18,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612379322] [2022-11-02 21:10:18,764 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612379322] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:10:18,764 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:10:18,765 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-02 21:10:18,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472937] [2022-11-02 21:10:18,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:10:18,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:10:18,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:10:18,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:10:18,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:10:18,898 INFO L87 Difference]: Start difference. First operand has 60916 states, 59576 states have (on average 5.3358902913925075) internal successors, (317891), 60915 states have internal predecessors, (317891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:19,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:10:19,475 INFO L93 Difference]: Finished difference Result 40704 states and 194041 transitions. [2022-11-02 21:10:19,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:10:19,475 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-02 21:10:19,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:10:19,757 INFO L225 Difference]: With dead ends: 40704 [2022-11-02 21:10:19,758 INFO L226 Difference]: Without dead ends: 40592 [2022-11-02 21:10:19,758 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:10:19,758 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 16 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:10:19,759 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 5 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:10:19,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40592 states. [2022-11-02 21:10:21,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40592 to 40592. [2022-11-02 21:10:22,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40592 states, 39483 states have (on average 4.898437302130031) internal successors, (193405), 40591 states have internal predecessors, (193405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:22,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40592 states to 40592 states and 193405 transitions. [2022-11-02 21:10:22,720 INFO L78 Accepts]: Start accepts. Automaton has 40592 states and 193405 transitions. Word has length 7 [2022-11-02 21:10:22,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:10:22,720 INFO L495 AbstractCegarLoop]: Abstraction has 40592 states and 193405 transitions. [2022-11-02 21:10:22,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:22,720 INFO L276 IsEmpty]: Start isEmpty. Operand 40592 states and 193405 transitions. [2022-11-02 21:10:22,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-02 21:10:22,721 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:10:22,721 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:10:22,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-11-02 21:10:22,721 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-11-02 21:10:22,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:10:22,723 INFO L85 PathProgramCache]: Analyzing trace with hash -1986874297, now seen corresponding path program 1 times [2022-11-02 21:10:22,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:10:22,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053086359] [2022-11-02 21:10:22,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:10:22,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:10:22,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:22,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:10:22,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:10:22,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053086359] [2022-11-02 21:10:22,779 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053086359] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:10:22,780 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:10:22,780 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 21:10:22,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086415529] [2022-11-02 21:10:22,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:10:22,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:10:22,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:10:22,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:10:22,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:10:22,781 INFO L87 Difference]: Start difference. First operand 40592 states and 193405 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:23,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:10:23,743 INFO L93 Difference]: Finished difference Result 40580 states and 193379 transitions. [2022-11-02 21:10:23,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:10:23,744 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-02 21:10:23,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:10:24,085 INFO L225 Difference]: With dead ends: 40580 [2022-11-02 21:10:24,085 INFO L226 Difference]: Without dead ends: 40580 [2022-11-02 21:10:24,086 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:10:24,086 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 3 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:10:24,087 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 6 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:10:24,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40580 states. [2022-11-02 21:10:25,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40580 to 40580. [2022-11-02 21:10:25,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40580 states, 39473 states have (on average 4.899019583006106) internal successors, (193379), 40579 states have internal predecessors, (193379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:26,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40580 states to 40580 states and 193379 transitions. [2022-11-02 21:10:26,403 INFO L78 Accepts]: Start accepts. Automaton has 40580 states and 193379 transitions. Word has length 8 [2022-11-02 21:10:26,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:10:26,404 INFO L495 AbstractCegarLoop]: Abstraction has 40580 states and 193379 transitions. [2022-11-02 21:10:26,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:26,404 INFO L276 IsEmpty]: Start isEmpty. Operand 40580 states and 193379 transitions. [2022-11-02 21:10:26,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-02 21:10:26,404 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:10:26,405 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:10:26,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-11-02 21:10:26,405 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-11-02 21:10:26,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:10:26,405 INFO L85 PathProgramCache]: Analyzing trace with hash 1605617071, now seen corresponding path program 1 times [2022-11-02 21:10:26,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:10:26,406 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699891586] [2022-11-02 21:10:26,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:10:26,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:10:26,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:26,481 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:10:26,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:10:26,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699891586] [2022-11-02 21:10:26,482 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699891586] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:10:26,482 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:10:26,482 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 21:10:26,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588010740] [2022-11-02 21:10:26,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:10:26,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:10:26,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:10:26,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:10:26,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:10:26,484 INFO L87 Difference]: Start difference. First operand 40580 states and 193379 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:26,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:10:26,856 INFO L93 Difference]: Finished difference Result 35380 states and 168123 transitions. [2022-11-02 21:10:26,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:10:26,857 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-02 21:10:26,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:10:27,529 INFO L225 Difference]: With dead ends: 35380 [2022-11-02 21:10:27,529 INFO L226 Difference]: Without dead ends: 35380 [2022-11-02 21:10:27,529 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:10:27,529 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 28 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:10:27,530 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 4 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:10:27,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35380 states. [2022-11-02 21:10:28,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35380 to 35380. [2022-11-02 21:10:28,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35380 states, 34573 states have (on average 4.86284094524629) internal successors, (168123), 35379 states have internal predecessors, (168123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:29,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35380 states to 35380 states and 168123 transitions. [2022-11-02 21:10:29,420 INFO L78 Accepts]: Start accepts. Automaton has 35380 states and 168123 transitions. Word has length 12 [2022-11-02 21:10:29,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:10:29,434 INFO L495 AbstractCegarLoop]: Abstraction has 35380 states and 168123 transitions. [2022-11-02 21:10:29,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:29,435 INFO L276 IsEmpty]: Start isEmpty. Operand 35380 states and 168123 transitions. [2022-11-02 21:10:29,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-02 21:10:29,435 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:10:29,436 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:10:29,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-11-02 21:10:29,436 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-11-02 21:10:29,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:10:29,436 INFO L85 PathProgramCache]: Analyzing trace with hash 1605616998, now seen corresponding path program 1 times [2022-11-02 21:10:29,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:10:29,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308630037] [2022-11-02 21:10:29,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:10:29,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:10:29,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:29,502 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:10:29,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:10:29,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308630037] [2022-11-02 21:10:29,503 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308630037] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:10:29,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [704148900] [2022-11-02 21:10:29,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:10:29,503 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:10:29,503 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff14c49-fc4e-42f8-8d54-e9dfec562d32/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:10:29,523 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff14c49-fc4e-42f8-8d54-e9dfec562d32/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:10:29,583 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff14c49-fc4e-42f8-8d54-e9dfec562d32/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-02 21:10:29,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:29,759 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 21:10:29,760 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:10:29,776 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:10:29,776 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:10:29,797 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:10:29,797 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [704148900] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:10:29,797 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 21:10:29,797 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-11-02 21:10:29,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069858357] [2022-11-02 21:10:29,798 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 21:10:29,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:10:29,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:10:29,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:10:29,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:10:29,799 INFO L87 Difference]: Start difference. First operand 35380 states and 168123 transitions. Second operand has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:30,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:10:30,201 INFO L93 Difference]: Finished difference Result 34446 states and 164346 transitions. [2022-11-02 21:10:30,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 21:10:30,201 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-02 21:10:30,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:10:30,895 INFO L225 Difference]: With dead ends: 34446 [2022-11-02 21:10:30,895 INFO L226 Difference]: Without dead ends: 34446 [2022-11-02 21:10:30,896 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:10:30,896 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 79 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:10:30,896 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 9 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:10:31,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34446 states. [2022-11-02 21:10:32,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34446 to 34446. [2022-11-02 21:10:32,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34446 states, 33728 states have (on average 4.872687381404175) internal successors, (164346), 34445 states have internal predecessors, (164346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:32,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34446 states to 34446 states and 164346 transitions. [2022-11-02 21:10:32,472 INFO L78 Accepts]: Start accepts. Automaton has 34446 states and 164346 transitions. Word has length 12 [2022-11-02 21:10:32,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:10:32,472 INFO L495 AbstractCegarLoop]: Abstraction has 34446 states and 164346 transitions. [2022-11-02 21:10:32,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:32,473 INFO L276 IsEmpty]: Start isEmpty. Operand 34446 states and 164346 transitions. [2022-11-02 21:10:32,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-02 21:10:32,474 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:10:32,474 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:10:32,512 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff14c49-fc4e-42f8-8d54-e9dfec562d32/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-11-02 21:10:32,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff14c49-fc4e-42f8-8d54-e9dfec562d32/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2022-11-02 21:10:32,679 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-11-02 21:10:32,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:10:32,679 INFO L85 PathProgramCache]: Analyzing trace with hash -1762393271, now seen corresponding path program 1 times [2022-11-02 21:10:32,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:10:32,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340522959] [2022-11-02 21:10:32,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:10:32,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:10:32,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:32,737 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 21:10:32,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:10:32,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340522959] [2022-11-02 21:10:32,737 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340522959] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:10:32,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1170688368] [2022-11-02 21:10:32,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:10:32,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:10:32,738 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff14c49-fc4e-42f8-8d54-e9dfec562d32/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:10:32,739 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff14c49-fc4e-42f8-8d54-e9dfec562d32/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:10:32,762 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff14c49-fc4e-42f8-8d54-e9dfec562d32/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-02 21:10:32,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:32,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 21:10:32,888 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:10:32,915 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 21:10:32,915 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:10:32,947 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 21:10:32,948 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1170688368] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:10:32,948 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 21:10:32,948 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 8 [2022-11-02 21:10:32,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023666559] [2022-11-02 21:10:32,948 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 21:10:32,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 21:10:32,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:10:32,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 21:10:32,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-02 21:10:32,949 INFO L87 Difference]: Start difference. First operand 34446 states and 164346 transitions. Second operand has 10 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 9 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:34,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:10:34,491 INFO L93 Difference]: Finished difference Result 75936 states and 299643 transitions. [2022-11-02 21:10:34,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 21:10:34,492 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 9 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-02 21:10:34,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:10:34,918 INFO L225 Difference]: With dead ends: 75936 [2022-11-02 21:10:34,918 INFO L226 Difference]: Without dead ends: 75936 [2022-11-02 21:10:34,918 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=101, Invalid=171, Unknown=0, NotChecked=0, Total=272 [2022-11-02 21:10:34,919 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 344 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 334 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 344 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 21:10:34,919 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [344 Valid, 33 Invalid, 371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 334 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 21:10:35,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75936 states. [2022-11-02 21:10:37,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75936 to 43096. [2022-11-02 21:10:37,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43096 states, 42434 states have (on average 4.6420558985719) internal successors, (196981), 43095 states have internal predecessors, (196981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:37,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43096 states to 43096 states and 196981 transitions. [2022-11-02 21:10:37,553 INFO L78 Accepts]: Start accepts. Automaton has 43096 states and 196981 transitions. Word has length 13 [2022-11-02 21:10:37,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:10:37,553 INFO L495 AbstractCegarLoop]: Abstraction has 43096 states and 196981 transitions. [2022-11-02 21:10:37,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 9 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:37,553 INFO L276 IsEmpty]: Start isEmpty. Operand 43096 states and 196981 transitions. [2022-11-02 21:10:37,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-02 21:10:37,554 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:10:37,554 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:10:37,608 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff14c49-fc4e-42f8-8d54-e9dfec562d32/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-11-02 21:10:37,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff14c49-fc4e-42f8-8d54-e9dfec562d32/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2022-11-02 21:10:37,771 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-11-02 21:10:37,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:10:37,771 INFO L85 PathProgramCache]: Analyzing trace with hash -1762393270, now seen corresponding path program 1 times [2022-11-02 21:10:37,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:10:37,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121574375] [2022-11-02 21:10:37,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:10:37,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:10:37,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:37,822 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 21:10:37,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:10:37,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121574375] [2022-11-02 21:10:37,823 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121574375] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:10:37,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1439512150] [2022-11-02 21:10:37,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:10:37,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:10:37,823 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff14c49-fc4e-42f8-8d54-e9dfec562d32/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:10:37,824 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff14c49-fc4e-42f8-8d54-e9dfec562d32/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:10:37,854 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff14c49-fc4e-42f8-8d54-e9dfec562d32/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-11-02 21:10:38,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:38,001 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 21:10:38,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:10:38,034 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 21:10:38,034 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:10:38,035 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1439512150] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:10:38,035 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 21:10:38,035 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2022-11-02 21:10:38,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805132302] [2022-11-02 21:10:38,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:10:38,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:10:38,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:10:38,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:10:38,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:10:38,038 INFO L87 Difference]: Start difference. First operand 43096 states and 196981 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:39,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:10:39,289 INFO L93 Difference]: Finished difference Result 54600 states and 225415 transitions. [2022-11-02 21:10:39,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 21:10:39,290 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-02 21:10:39,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:10:39,650 INFO L225 Difference]: With dead ends: 54600 [2022-11-02 21:10:39,650 INFO L226 Difference]: Without dead ends: 54578 [2022-11-02 21:10:39,650 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-02 21:10:39,651 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 87 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:10:39,651 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 21 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 21:10:39,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54578 states. [2022-11-02 21:10:41,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54578 to 41662. [2022-11-02 21:10:41,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41662 states, 41196 states have (on average 4.518836780269929) internal successors, (186158), 41661 states have internal predecessors, (186158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:41,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41662 states to 41662 states and 186158 transitions. [2022-11-02 21:10:41,883 INFO L78 Accepts]: Start accepts. Automaton has 41662 states and 186158 transitions. Word has length 13 [2022-11-02 21:10:41,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:10:41,884 INFO L495 AbstractCegarLoop]: Abstraction has 41662 states and 186158 transitions. [2022-11-02 21:10:41,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:41,884 INFO L276 IsEmpty]: Start isEmpty. Operand 41662 states and 186158 transitions. [2022-11-02 21:10:41,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-02 21:10:41,884 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:10:41,884 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:10:41,909 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff14c49-fc4e-42f8-8d54-e9dfec562d32/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2022-11-02 21:10:42,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff14c49-fc4e-42f8-8d54-e9dfec562d32/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2022-11-02 21:10:42,085 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-11-02 21:10:42,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:10:42,086 INFO L85 PathProgramCache]: Analyzing trace with hash -1765205024, now seen corresponding path program 1 times [2022-11-02 21:10:42,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:10:42,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491900346] [2022-11-02 21:10:42,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:10:42,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:10:42,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:42,133 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 21:10:42,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:10:42,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491900346] [2022-11-02 21:10:42,134 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491900346] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:10:42,134 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:10:42,134 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:10:42,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181476395] [2022-11-02 21:10:42,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:10:42,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:10:42,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:10:42,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:10:42,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:10:42,136 INFO L87 Difference]: Start difference. First operand 41662 states and 186158 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:43,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:10:43,619 INFO L93 Difference]: Finished difference Result 65572 states and 271497 transitions. [2022-11-02 21:10:43,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 21:10:43,620 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-02 21:10:43,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:10:44,010 INFO L225 Difference]: With dead ends: 65572 [2022-11-02 21:10:44,010 INFO L226 Difference]: Without dead ends: 65572 [2022-11-02 21:10:44,010 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:10:44,011 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 111 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:10:44,011 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 21 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 21:10:44,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65572 states. [2022-11-02 21:10:45,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65572 to 46606. [2022-11-02 21:10:46,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46606 states, 46146 states have (on average 4.559745156676635) internal successors, (210414), 46605 states have internal predecessors, (210414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:46,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46606 states to 46606 states and 210414 transitions. [2022-11-02 21:10:46,288 INFO L78 Accepts]: Start accepts. Automaton has 46606 states and 210414 transitions. Word has length 13 [2022-11-02 21:10:46,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:10:46,289 INFO L495 AbstractCegarLoop]: Abstraction has 46606 states and 210414 transitions. [2022-11-02 21:10:46,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:46,289 INFO L276 IsEmpty]: Start isEmpty. Operand 46606 states and 210414 transitions. [2022-11-02 21:10:46,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-02 21:10:46,289 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:10:46,289 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:10:46,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2022-11-02 21:10:46,289 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-11-02 21:10:46,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:10:46,290 INFO L85 PathProgramCache]: Analyzing trace with hash -1765205023, now seen corresponding path program 1 times [2022-11-02 21:10:46,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:10:46,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007784986] [2022-11-02 21:10:46,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:10:46,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:10:46,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:46,351 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 21:10:46,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:10:46,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007784986] [2022-11-02 21:10:46,351 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007784986] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:10:46,352 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:10:46,352 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:10:46,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350914036] [2022-11-02 21:10:46,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:10:46,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:10:46,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:10:46,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:10:46,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:10:46,353 INFO L87 Difference]: Start difference. First operand 46606 states and 210414 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:47,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:10:47,658 INFO L93 Difference]: Finished difference Result 59550 states and 244946 transitions. [2022-11-02 21:10:47,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 21:10:47,658 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-02 21:10:47,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:10:48,072 INFO L225 Difference]: With dead ends: 59550 [2022-11-02 21:10:48,072 INFO L226 Difference]: Without dead ends: 59500 [2022-11-02 21:10:48,072 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:10:48,073 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 123 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:10:48,073 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 14 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:10:48,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59500 states. [2022-11-02 21:10:50,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59500 to 43144. [2022-11-02 21:10:50,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43144 states, 42710 states have (on average 4.494333879653477) internal successors, (191953), 43143 states have internal predecessors, (191953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:50,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43144 states to 43144 states and 191953 transitions. [2022-11-02 21:10:50,369 INFO L78 Accepts]: Start accepts. Automaton has 43144 states and 191953 transitions. Word has length 13 [2022-11-02 21:10:50,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:10:50,369 INFO L495 AbstractCegarLoop]: Abstraction has 43144 states and 191953 transitions. [2022-11-02 21:10:50,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:50,370 INFO L276 IsEmpty]: Start isEmpty. Operand 43144 states and 191953 transitions. [2022-11-02 21:10:50,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-02 21:10:50,370 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:10:50,370 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:10:50,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2022-11-02 21:10:50,370 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-11-02 21:10:50,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:10:50,371 INFO L85 PathProgramCache]: Analyzing trace with hash 555957005, now seen corresponding path program 1 times [2022-11-02 21:10:50,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:10:50,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400411736] [2022-11-02 21:10:50,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:10:50,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:10:50,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:50,425 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-02 21:10:50,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:10:50,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400411736] [2022-11-02 21:10:50,426 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400411736] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:10:50,426 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:10:50,426 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:10:50,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906890893] [2022-11-02 21:10:50,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:10:50,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:10:50,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:10:50,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:10:50,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:10:50,428 INFO L87 Difference]: Start difference. First operand 43144 states and 191953 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:51,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:10:51,723 INFO L93 Difference]: Finished difference Result 62102 states and 257132 transitions. [2022-11-02 21:10:51,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 21:10:51,723 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-02 21:10:51,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:10:52,073 INFO L225 Difference]: With dead ends: 62102 [2022-11-02 21:10:52,074 INFO L226 Difference]: Without dead ends: 62102 [2022-11-02 21:10:52,074 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:10:52,074 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 126 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:10:52,075 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 14 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:10:52,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62102 states. [2022-11-02 21:10:53,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62102 to 44282. [2022-11-02 21:10:53,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44282 states, 43853 states have (on average 4.488678083597473) internal successors, (196842), 44281 states have internal predecessors, (196842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:54,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44282 states to 44282 states and 196842 transitions. [2022-11-02 21:10:54,195 INFO L78 Accepts]: Start accepts. Automaton has 44282 states and 196842 transitions. Word has length 17 [2022-11-02 21:10:54,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:10:54,196 INFO L495 AbstractCegarLoop]: Abstraction has 44282 states and 196842 transitions. [2022-11-02 21:10:54,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:54,196 INFO L276 IsEmpty]: Start isEmpty. Operand 44282 states and 196842 transitions. [2022-11-02 21:10:54,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-02 21:10:54,197 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:10:54,197 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:10:54,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2022-11-02 21:10:54,197 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-11-02 21:10:54,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:10:54,197 INFO L85 PathProgramCache]: Analyzing trace with hash 555957006, now seen corresponding path program 1 times [2022-11-02 21:10:54,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:10:54,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232132398] [2022-11-02 21:10:54,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:10:54,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:10:54,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:54,259 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-02 21:10:54,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:10:54,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232132398] [2022-11-02 21:10:54,259 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232132398] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:10:54,259 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:10:54,260 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:10:54,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041620055] [2022-11-02 21:10:54,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:10:54,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:10:54,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:10:54,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:10:54,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:10:54,261 INFO L87 Difference]: Start difference. First operand 44282 states and 196842 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:55,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:10:55,506 INFO L93 Difference]: Finished difference Result 55672 states and 227137 transitions. [2022-11-02 21:10:55,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 21:10:55,512 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-02 21:10:55,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:10:55,883 INFO L225 Difference]: With dead ends: 55672 [2022-11-02 21:10:55,883 INFO L226 Difference]: Without dead ends: 55588 [2022-11-02 21:10:55,884 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:10:55,884 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 98 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:10:55,884 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 21 Invalid, 265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 21:10:56,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55588 states.