./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread-deagle/floating_read-10.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_da23da70-71c9-45a1-a198-a1841d2714ae/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da23da70-71c9-45a1-a198-a1841d2714ae/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_da23da70-71c9-45a1-a198-a1841d2714ae/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da23da70-71c9-45a1-a198-a1841d2714ae/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-deagle/floating_read-10.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da23da70-71c9-45a1-a198-a1841d2714ae/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_da23da70-71c9-45a1-a198-a1841d2714ae/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 8144e99ab74da6c65d7c38142aa4ddc1b99b688ea06937a7acd153b5a75ad731 --- 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 20:44:27,961 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:44:27,963 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:44:28,010 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:44:28,018 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:44:28,020 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:44:28,021 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:44:28,023 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:44:28,027 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:44:28,034 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:44:28,035 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:44:28,037 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:44:28,037 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:44:28,038 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:44:28,040 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:44:28,044 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:44:28,047 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:44:28,049 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:44:28,055 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:44:28,060 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:44:28,062 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:44:28,073 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:44:28,074 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:44:28,075 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:44:28,079 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:44:28,080 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:44:28,080 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:44:28,081 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:44:28,086 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:44:28,088 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:44:28,088 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:44:28,089 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:44:28,090 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:44:28,091 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:44:28,093 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:44:28,094 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:44:28,095 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:44:28,096 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:44:28,097 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:44:28,098 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:44:28,098 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:44:28,099 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da23da70-71c9-45a1-a198-a1841d2714ae/bin/uautomizer-Dbtcem3rbc/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-02 20:44:28,137 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:44:28,146 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:44:28,147 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:44:28,148 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:44:28,149 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:44:28,149 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:44:28,150 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:44:28,151 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:44:28,151 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:44:28,151 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:44:28,152 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 20:44:28,153 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-02 20:44:28,153 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:44:28,153 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 20:44:28,153 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:44:28,154 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:44:28,154 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:44:28,154 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:44:28,154 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-02 20:44:28,155 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 20:44:28,155 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:44:28,155 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:44:28,155 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:44:28,156 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:44:28,156 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:44:28,156 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:44:28,156 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:44:28,157 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:44:28,157 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:44:28,157 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:44:28,157 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:44:28,158 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:44:28,158 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:44:28,158 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_da23da70-71c9-45a1-a198-a1841d2714ae/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da23da70-71c9-45a1-a198-a1841d2714ae/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8144e99ab74da6c65d7c38142aa4ddc1b99b688ea06937a7acd153b5a75ad731 [2022-11-02 20:44:28,489 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:44:28,532 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:44:28,535 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:44:28,536 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:44:28,537 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:44:28,538 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da23da70-71c9-45a1-a198-a1841d2714ae/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/pthread-deagle/floating_read-10.i [2022-11-02 20:44:28,622 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da23da70-71c9-45a1-a198-a1841d2714ae/bin/uautomizer-Dbtcem3rbc/data/5fcb599b6/b09ea9bb1f1941fa878a107b25b52999/FLAGc2b0a50c9 [2022-11-02 20:44:29,270 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:44:29,271 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da23da70-71c9-45a1-a198-a1841d2714ae/sv-benchmarks/c/pthread-deagle/floating_read-10.i [2022-11-02 20:44:29,300 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da23da70-71c9-45a1-a198-a1841d2714ae/bin/uautomizer-Dbtcem3rbc/data/5fcb599b6/b09ea9bb1f1941fa878a107b25b52999/FLAGc2b0a50c9 [2022-11-02 20:44:29,520 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da23da70-71c9-45a1-a198-a1841d2714ae/bin/uautomizer-Dbtcem3rbc/data/5fcb599b6/b09ea9bb1f1941fa878a107b25b52999 [2022-11-02 20:44:29,523 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:44:29,524 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:44:29,526 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:44:29,526 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:44:29,530 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:44:29,530 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:44:29" (1/1) ... [2022-11-02 20:44:29,532 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@494a6bcd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:44:29, skipping insertion in model container [2022-11-02 20:44:29,532 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:44:29" (1/1) ... [2022-11-02 20:44:29,539 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:44:29,568 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:44:30,063 WARN L1543 CHandler]: Possible shadowing of function thread [2022-11-02 20:44:30,076 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_da23da70-71c9-45a1-a198-a1841d2714ae/sv-benchmarks/c/pthread-deagle/floating_read-10.i[31197,31210] [2022-11-02 20:44:30,081 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:44:30,089 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:44:30,141 WARN L1543 CHandler]: Possible shadowing of function thread [2022-11-02 20:44:30,145 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_da23da70-71c9-45a1-a198-a1841d2714ae/sv-benchmarks/c/pthread-deagle/floating_read-10.i[31197,31210] [2022-11-02 20:44:30,147 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:44:30,177 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:44:30,178 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:44:30 WrapperNode [2022-11-02 20:44:30,178 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:44:30,179 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:44:30,179 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:44:30,179 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:44:30,187 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:44:30" (1/1) ... [2022-11-02 20:44:30,219 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:44:30" (1/1) ... [2022-11-02 20:44:30,250 INFO L138 Inliner]: procedures = 162, calls = 17, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 56 [2022-11-02 20:44:30,250 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:44:30,251 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:44:30,252 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:44:30,252 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:44:30,261 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:44:30" (1/1) ... [2022-11-02 20:44:30,262 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:44:30" (1/1) ... [2022-11-02 20:44:30,276 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:44:30" (1/1) ... [2022-11-02 20:44:30,277 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:44:30" (1/1) ... [2022-11-02 20:44:30,283 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:44:30" (1/1) ... [2022-11-02 20:44:30,298 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:44:30" (1/1) ... [2022-11-02 20:44:30,300 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:44:30" (1/1) ... [2022-11-02 20:44:30,303 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:44:30" (1/1) ... [2022-11-02 20:44:30,305 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:44:30,311 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:44:30,312 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:44:30,312 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:44:30,313 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:44:30" (1/1) ... [2022-11-02 20:44:30,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:44:30,330 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da23da70-71c9-45a1-a198-a1841d2714ae/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:44:30,344 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da23da70-71c9-45a1-a198-a1841d2714ae/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:44:30,378 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da23da70-71c9-45a1-a198-a1841d2714ae/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:44:30,399 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-02 20:44:30,400 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-02 20:44:30,400 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-02 20:44:30,400 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 20:44:30,402 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 20:44:30,403 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 20:44:30,403 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 20:44:30,404 INFO L130 BoogieDeclarations]: Found specification of procedure thread [2022-11-02 20:44:30,404 INFO L138 BoogieDeclarations]: Found implementation of procedure thread [2022-11-02 20:44:30,404 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-02 20:44:30,404 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:44:30,405 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:44:30,406 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 20:44:30,632 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:44:30,647 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:44:30,833 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:44:30,839 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:44:30,840 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-02 20:44:30,843 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:44:30 BoogieIcfgContainer [2022-11-02 20:44:30,843 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:44:30,847 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:44:30,847 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:44:30,851 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:44:30,851 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:44:29" (1/3) ... [2022-11-02 20:44:30,852 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@157817be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:44:30, skipping insertion in model container [2022-11-02 20:44:30,852 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:44:30" (2/3) ... [2022-11-02 20:44:30,852 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@157817be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:44:30, skipping insertion in model container [2022-11-02 20:44:30,853 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:44:30" (3/3) ... [2022-11-02 20:44:30,854 INFO L112 eAbstractionObserver]: Analyzing ICFG floating_read-10.i [2022-11-02 20:44:30,863 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-02 20:44:30,873 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:44:30,873 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-11-02 20:44:30,874 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-02 20:44:30,926 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-11-02 20:44:30,958 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-02 20:44:30,972 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 65 places, 66 transitions, 140 flow [2022-11-02 20:44:30,975 INFO L112 LiptonReduction]: Starting Lipton reduction on Petri net that has 65 places, 66 transitions, 140 flow [2022-11-02 20:44:30,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 65 places, 66 transitions, 140 flow [2022-11-02 20:44:31,041 INFO L130 PetriNetUnfolder]: 7/87 cut-off events. [2022-11-02 20:44:31,041 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-02 20:44:31,044 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93 conditions, 87 events. 7/87 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 106 event pairs, 0 based on Foata normal form. 0/73 useless extension candidates. Maximal degree in co-relation 41. Up to 4 conditions per place. [2022-11-02 20:44:31,045 INFO L118 LiptonReduction]: Number of co-enabled transitions 310 [2022-11-02 20:44:33,207 INFO L133 LiptonReduction]: Checked pairs total: 317 [2022-11-02 20:44:33,207 INFO L135 LiptonReduction]: Total number of compositions: 61 [2022-11-02 20:44:33,217 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 17 places, 15 transitions, 38 flow [2022-11-02 20:44:33,231 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 26 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 25 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 20:44:33,256 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:44:33,264 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;@2a107e29, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:44:33,265 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-11-02 20:44:33,267 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 25 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 20:44:33,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-02 20:44:33,273 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:44:33,274 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-02 20:44:33,275 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2022-11-02 20:44:33,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:44:33,290 INFO L85 PathProgramCache]: Analyzing trace with hash 7774890, now seen corresponding path program 1 times [2022-11-02 20:44:33,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:44:33,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501880410] [2022-11-02 20:44:33,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:44:33,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:44:33,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:33,541 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 20:44:33,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:44:33,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501880410] [2022-11-02 20:44:33,542 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501880410] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:44:33,543 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:44:33,543 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-02 20:44:33,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961809151] [2022-11-02 20:44:33,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:44:33,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:44:33,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:44:33,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:44:33,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:44:33,577 INFO L87 Difference]: Start difference. First operand has 26 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 25 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) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states 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 20:44:33,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:44:33,621 INFO L93 Difference]: Finished difference Result 22 states and 27 transitions. [2022-11-02 20:44:33,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:44:33,624 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 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 4 [2022-11-02 20:44:33,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:44:33,631 INFO L225 Difference]: With dead ends: 22 [2022-11-02 20:44:33,632 INFO L226 Difference]: Without dead ends: 18 [2022-11-02 20:44:33,633 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 20:44:33,636 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 1 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:44:33,638 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 2 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:44:33,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-11-02 20:44:33,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2022-11-02 20:44:33,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 17 states have internal predecessors, (22), 0 states have call successors, (0), 0 states 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 20:44:33,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2022-11-02 20:44:33,674 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 4 [2022-11-02 20:44:33,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:44:33,674 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2022-11-02 20:44:33,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states 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 20:44:33,675 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2022-11-02 20:44:33,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-02 20:44:33,675 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:44:33,675 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2022-11-02 20:44:33,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:44:33,676 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2022-11-02 20:44:33,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:44:33,678 INFO L85 PathProgramCache]: Analyzing trace with hash -1118259562, now seen corresponding path program 1 times [2022-11-02 20:44:33,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:44:33,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872761647] [2022-11-02 20:44:33,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:44:33,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:44:33,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:44:33,732 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:44:33,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:44:33,787 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:44:33,787 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-02 20:44:33,789 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2022-11-02 20:44:33,791 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 5 remaining) [2022-11-02 20:44:33,792 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 5 remaining) [2022-11-02 20:44:33,792 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 5 remaining) [2022-11-02 20:44:33,793 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 5 remaining) [2022-11-02 20:44:33,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 20:44:33,796 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-02 20:44:33,798 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-02 20:44:33,798 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-02 20:44:33,823 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-02 20:44:33,825 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-02 20:44:33,825 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 73 places, 73 transitions, 164 flow [2022-11-02 20:44:33,826 INFO L112 LiptonReduction]: Starting Lipton reduction on Petri net that has 73 places, 73 transitions, 164 flow [2022-11-02 20:44:33,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 73 places, 73 transitions, 164 flow [2022-11-02 20:44:33,872 INFO L130 PetriNetUnfolder]: 13/152 cut-off events. [2022-11-02 20:44:33,872 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-02 20:44:33,873 INFO L83 FinitePrefix]: Finished finitePrefix Result has 166 conditions, 152 events. 13/152 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 276 event pairs, 0 based on Foata normal form. 0/125 useless extension candidates. Maximal degree in co-relation 89. Up to 8 conditions per place. [2022-11-02 20:44:33,875 INFO L118 LiptonReduction]: Number of co-enabled transitions 860 [2022-11-02 20:44:35,862 INFO L133 LiptonReduction]: Checked pairs total: 1061 [2022-11-02 20:44:35,863 INFO L135 LiptonReduction]: Total number of compositions: 62 [2022-11-02 20:44:35,864 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 23 places, 20 transitions, 58 flow [2022-11-02 20:44:35,873 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 89 states, 74 states have (on average 2.0135135135135136) internal successors, (149), 88 states have internal predecessors, (149), 0 states have call successors, (0), 0 states 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 20:44:35,874 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:44:35,875 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;@2a107e29, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:44:35,875 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-11-02 20:44:35,876 INFO L276 IsEmpty]: Start isEmpty. Operand has 89 states, 74 states have (on average 2.0135135135135136) internal successors, (149), 88 states have internal predecessors, (149), 0 states have call successors, (0), 0 states 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 20:44:35,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-02 20:44:35,877 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:44:35,877 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-02 20:44:35,877 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2022-11-02 20:44:35,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:44:35,878 INFO L85 PathProgramCache]: Analyzing trace with hash 376200321, now seen corresponding path program 1 times [2022-11-02 20:44:35,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:44:35,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283538299] [2022-11-02 20:44:35,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:44:35,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:44:35,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:35,937 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 20:44:35,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:44:35,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283538299] [2022-11-02 20:44:35,938 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283538299] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:44:35,938 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:44:35,938 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-02 20:44:35,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586773041] [2022-11-02 20:44:35,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:44:35,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:44:35,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:44:35,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:44:35,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:44:35,941 INFO L87 Difference]: Start difference. First operand has 89 states, 74 states have (on average 2.0135135135135136) internal successors, (149), 88 states have internal predecessors, (149), 0 states have call successors, (0), 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 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states 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 20:44:35,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:44:35,977 INFO L93 Difference]: Finished difference Result 85 states and 142 transitions. [2022-11-02 20:44:35,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:44:35,977 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 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 5 [2022-11-02 20:44:35,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:44:35,980 INFO L225 Difference]: With dead ends: 85 [2022-11-02 20:44:35,980 INFO L226 Difference]: Without dead ends: 75 [2022-11-02 20:44:35,980 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 20:44:35,981 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 1 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:44:35,982 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 6 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:44:35,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2022-11-02 20:44:35,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2022-11-02 20:44:35,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 66 states have (on average 1.9090909090909092) internal successors, (126), 74 states have internal predecessors, (126), 0 states have call successors, (0), 0 states 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 20:44:35,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 126 transitions. [2022-11-02 20:44:35,992 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 126 transitions. Word has length 5 [2022-11-02 20:44:35,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:44:35,992 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 126 transitions. [2022-11-02 20:44:35,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states 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 20:44:35,993 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 126 transitions. [2022-11-02 20:44:35,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-02 20:44:35,994 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:44:35,994 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-11-02 20:44:35,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 20:44:35,994 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2022-11-02 20:44:35,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:44:35,995 INFO L85 PathProgramCache]: Analyzing trace with hash 423711427, now seen corresponding path program 1 times [2022-11-02 20:44:35,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:44:35,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095817969] [2022-11-02 20:44:35,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:44:35,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:44:36,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:36,096 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 20:44:36,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:44:36,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095817969] [2022-11-02 20:44:36,097 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095817969] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:44:36,097 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:44:36,097 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:44:36,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111101770] [2022-11-02 20:44:36,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:44:36,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:44:36,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:44:36,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:44:36,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:44:36,099 INFO L87 Difference]: Start difference. First operand 75 states and 126 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states 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 20:44:36,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:44:36,127 INFO L93 Difference]: Finished difference Result 71 states and 118 transitions. [2022-11-02 20:44:36,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:44:36,128 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 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 9 [2022-11-02 20:44:36,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:44:36,129 INFO L225 Difference]: With dead ends: 71 [2022-11-02 20:44:36,129 INFO L226 Difference]: Without dead ends: 71 [2022-11-02 20:44:36,130 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 20:44:36,131 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 13 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:44:36,131 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 3 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:44:36,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2022-11-02 20:44:36,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2022-11-02 20:44:36,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 63 states have (on average 1.873015873015873) internal successors, (118), 70 states have internal predecessors, (118), 0 states have call successors, (0), 0 states 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 20:44:36,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 118 transitions. [2022-11-02 20:44:36,141 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 118 transitions. Word has length 9 [2022-11-02 20:44:36,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:44:36,142 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 118 transitions. [2022-11-02 20:44:36,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states 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 20:44:36,142 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 118 transitions. [2022-11-02 20:44:36,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-02 20:44:36,143 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:44:36,143 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-11-02 20:44:36,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-02 20:44:36,144 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2022-11-02 20:44:36,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:44:36,144 INFO L85 PathProgramCache]: Analyzing trace with hash 423711428, now seen corresponding path program 1 times [2022-11-02 20:44:36,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:44:36,145 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578601333] [2022-11-02 20:44:36,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:44:36,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:44:36,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:36,203 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:44:36,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:44:36,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578601333] [2022-11-02 20:44:36,204 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578601333] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:44:36,204 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:44:36,205 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:44:36,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745498057] [2022-11-02 20:44:36,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:44:36,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:44:36,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:44:36,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:44:36,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:44:36,207 INFO L87 Difference]: Start difference. First operand 71 states and 118 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states 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 20:44:36,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:44:36,235 INFO L93 Difference]: Finished difference Result 67 states and 110 transitions. [2022-11-02 20:44:36,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:44:36,236 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 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 9 [2022-11-02 20:44:36,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:44:36,237 INFO L225 Difference]: With dead ends: 67 [2022-11-02 20:44:36,237 INFO L226 Difference]: Without dead ends: 67 [2022-11-02 20:44:36,237 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 20:44:36,239 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 4 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:44:36,239 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 4 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:44:36,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2022-11-02 20:44:36,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2022-11-02 20:44:36,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 60 states have (on average 1.8333333333333333) internal successors, (110), 66 states have internal predecessors, (110), 0 states have call successors, (0), 0 states 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 20:44:36,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 110 transitions. [2022-11-02 20:44:36,252 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 110 transitions. Word has length 9 [2022-11-02 20:44:36,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:44:36,253 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 110 transitions. [2022-11-02 20:44:36,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states 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 20:44:36,253 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 110 transitions. [2022-11-02 20:44:36,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-02 20:44:36,254 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:44:36,254 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:44:36,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-02 20:44:36,255 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2022-11-02 20:44:36,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:44:36,255 INFO L85 PathProgramCache]: Analyzing trace with hash -1473859766, now seen corresponding path program 1 times [2022-11-02 20:44:36,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:44:36,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133329740] [2022-11-02 20:44:36,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:44:36,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:44:36,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:36,384 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:44:36,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:44:36,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133329740] [2022-11-02 20:44:36,385 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133329740] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:44:36,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2144625205] [2022-11-02 20:44:36,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:44:36,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:44:36,390 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da23da70-71c9-45a1-a198-a1841d2714ae/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:44:36,398 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da23da70-71c9-45a1-a198-a1841d2714ae/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:44:36,412 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da23da70-71c9-45a1-a198-a1841d2714ae/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-02 20:44:36,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:36,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 20:44:36,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:44:36,573 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:44:36,574 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:44:36,603 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:44:36,603 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2144625205] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:44:36,603 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:44:36,603 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-11-02 20:44:36,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095798134] [2022-11-02 20:44:36,604 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:44:36,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:44:36,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:44:36,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:44:36,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:44:36,606 INFO L87 Difference]: Start difference. First operand 67 states and 110 transitions. Second operand has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 6 states have internal predecessors, (24), 0 states have call successors, (0), 0 states 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 20:44:36,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:44:36,636 INFO L93 Difference]: Finished difference Result 31 states and 51 transitions. [2022-11-02 20:44:36,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:44:36,636 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 6 states have internal predecessors, (24), 0 states have call successors, (0), 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 11 [2022-11-02 20:44:36,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:44:36,637 INFO L225 Difference]: With dead ends: 31 [2022-11-02 20:44:36,637 INFO L226 Difference]: Without dead ends: 31 [2022-11-02 20:44:36,638 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 18 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 20:44:36,639 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 13 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:44:36,648 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 5 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:44:36,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-11-02 20:44:36,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2022-11-02 20:44:36,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.7) internal successors, (51), 30 states have internal predecessors, (51), 0 states have call successors, (0), 0 states 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 20:44:36,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 51 transitions. [2022-11-02 20:44:36,652 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 51 transitions. Word has length 11 [2022-11-02 20:44:36,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:44:36,653 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 51 transitions. [2022-11-02 20:44:36,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 6 states have internal predecessors, (24), 0 states have call successors, (0), 0 states 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 20:44:36,653 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 51 transitions. [2022-11-02 20:44:36,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-02 20:44:36,656 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:44:36,656 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-11-02 20:44:36,696 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da23da70-71c9-45a1-a198-a1841d2714ae/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-02 20:44:36,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da23da70-71c9-45a1-a198-a1841d2714ae/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-02 20:44:36,871 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2022-11-02 20:44:36,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:44:36,871 INFO L85 PathProgramCache]: Analyzing trace with hash -835189340, now seen corresponding path program 1 times [2022-11-02 20:44:36,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:44:36,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723020355] [2022-11-02 20:44:36,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:44:36,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:44:36,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:44:36,894 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:44:36,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:44:36,921 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:44:36,922 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-02 20:44:36,922 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2022-11-02 20:44:36,922 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 5 remaining) [2022-11-02 20:44:36,922 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 5 remaining) [2022-11-02 20:44:36,923 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 5 remaining) [2022-11-02 20:44:36,923 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 5 remaining) [2022-11-02 20:44:36,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-02 20:44:36,923 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-11-02 20:44:36,924 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-02 20:44:36,924 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-02 20:44:36,951 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-02 20:44:36,953 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-02 20:44:36,953 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 81 places, 80 transitions, 190 flow [2022-11-02 20:44:36,954 INFO L112 LiptonReduction]: Starting Lipton reduction on Petri net that has 81 places, 80 transitions, 190 flow [2022-11-02 20:44:36,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 81 places, 80 transitions, 190 flow [2022-11-02 20:44:37,038 INFO L130 PetriNetUnfolder]: 24/258 cut-off events. [2022-11-02 20:44:37,039 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-11-02 20:44:37,040 INFO L83 FinitePrefix]: Finished finitePrefix Result has 286 conditions, 258 events. 24/258 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 621 event pairs, 1 based on Foata normal form. 0/210 useless extension candidates. Maximal degree in co-relation 160. Up to 16 conditions per place. [2022-11-02 20:44:37,043 INFO L118 LiptonReduction]: Number of co-enabled transitions 1410 [2022-11-02 20:44:38,975 INFO L133 LiptonReduction]: Checked pairs total: 1668 [2022-11-02 20:44:38,975 INFO L135 LiptonReduction]: Total number of compositions: 67 [2022-11-02 20:44:38,976 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 27 places, 23 transitions, 76 flow [2022-11-02 20:44:39,011 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 251 states, 222 states have (on average 2.310810810810811) internal successors, (513), 250 states have internal predecessors, (513), 0 states have call successors, (0), 0 states 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 20:44:39,013 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:44:39,013 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;@2a107e29, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:44:39,014 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-11-02 20:44:39,015 INFO L276 IsEmpty]: Start isEmpty. Operand has 251 states, 222 states have (on average 2.310810810810811) internal successors, (513), 250 states have internal predecessors, (513), 0 states have call successors, (0), 0 states 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 20:44:39,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-02 20:44:39,015 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:44:39,016 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-02 20:44:39,016 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2022-11-02 20:44:39,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:44:39,017 INFO L85 PathProgramCache]: Analyzing trace with hash 523483904, now seen corresponding path program 1 times [2022-11-02 20:44:39,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:44:39,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288610175] [2022-11-02 20:44:39,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:44:39,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:44:39,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:39,070 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 20:44:39,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:44:39,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288610175] [2022-11-02 20:44:39,071 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288610175] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:44:39,071 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:44:39,071 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-02 20:44:39,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243546442] [2022-11-02 20:44:39,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:44:39,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:44:39,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:44:39,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:44:39,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:44:39,074 INFO L87 Difference]: Start difference. First operand has 251 states, 222 states have (on average 2.310810810810811) internal successors, (513), 250 states have internal predecessors, (513), 0 states have call successors, (0), 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 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states 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 20:44:39,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:44:39,130 INFO L93 Difference]: Finished difference Result 247 states and 506 transitions. [2022-11-02 20:44:39,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:44:39,136 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 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 5 [2022-11-02 20:44:39,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:44:39,140 INFO L225 Difference]: With dead ends: 247 [2022-11-02 20:44:39,144 INFO L226 Difference]: Without dead ends: 219 [2022-11-02 20:44:39,144 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 20:44:39,145 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 1 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:44:39,146 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 6 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:44:39,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2022-11-02 20:44:39,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 219. [2022-11-02 20:44:39,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 200 states have (on average 2.255) internal successors, (451), 218 states have internal predecessors, (451), 0 states have call successors, (0), 0 states 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 20:44:39,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 451 transitions. [2022-11-02 20:44:39,176 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 451 transitions. Word has length 5 [2022-11-02 20:44:39,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:44:39,177 INFO L495 AbstractCegarLoop]: Abstraction has 219 states and 451 transitions. [2022-11-02 20:44:39,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states 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 20:44:39,177 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 451 transitions. [2022-11-02 20:44:39,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-02 20:44:39,179 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:44:39,179 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-11-02 20:44:39,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-02 20:44:39,180 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2022-11-02 20:44:39,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:44:39,180 INFO L85 PathProgramCache]: Analyzing trace with hash -1711023969, now seen corresponding path program 1 times [2022-11-02 20:44:39,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:44:39,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742960556] [2022-11-02 20:44:39,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:44:39,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:44:39,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:39,276 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 20:44:39,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:44:39,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742960556] [2022-11-02 20:44:39,277 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742960556] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:44:39,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1034083961] [2022-11-02 20:44:39,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:44:39,278 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:44:39,278 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da23da70-71c9-45a1-a198-a1841d2714ae/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:44:39,283 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da23da70-71c9-45a1-a198-a1841d2714ae/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:44:39,314 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da23da70-71c9-45a1-a198-a1841d2714ae/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-02 20:44:39,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:39,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 20:44:39,394 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:44:39,423 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 20:44:39,424 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:44:39,424 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1034083961] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:44:39,424 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:44:39,429 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2022-11-02 20:44:39,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572097598] [2022-11-02 20:44:39,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:44:39,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:44:39,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:44:39,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:44:39,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:44:39,434 INFO L87 Difference]: Start difference. First operand 219 states and 451 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states 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 20:44:39,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:44:39,482 INFO L93 Difference]: Finished difference Result 207 states and 423 transitions. [2022-11-02 20:44:39,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:44:39,483 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 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 9 [2022-11-02 20:44:39,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:44:39,485 INFO L225 Difference]: With dead ends: 207 [2022-11-02 20:44:39,486 INFO L226 Difference]: Without dead ends: 207 [2022-11-02 20:44:39,486 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 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 20:44:39,487 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 31 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:44:39,487 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 5 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:44:39,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2022-11-02 20:44:39,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 207. [2022-11-02 20:44:39,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 190 states have (on average 2.2263157894736842) internal successors, (423), 206 states have internal predecessors, (423), 0 states have call successors, (0), 0 states 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 20:44:39,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 423 transitions. [2022-11-02 20:44:39,503 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 423 transitions. Word has length 9 [2022-11-02 20:44:39,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:44:39,504 INFO L495 AbstractCegarLoop]: Abstraction has 207 states and 423 transitions. [2022-11-02 20:44:39,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states 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 20:44:39,504 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 423 transitions. [2022-11-02 20:44:39,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-02 20:44:39,505 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:44:39,505 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-11-02 20:44:39,545 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da23da70-71c9-45a1-a198-a1841d2714ae/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-02 20:44:39,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da23da70-71c9-45a1-a198-a1841d2714ae/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:44:39,720 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2022-11-02 20:44:39,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:44:39,720 INFO L85 PathProgramCache]: Analyzing trace with hash -1711023989, now seen corresponding path program 1 times [2022-11-02 20:44:39,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:44:39,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221818387] [2022-11-02 20:44:39,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:44:39,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:44:39,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:39,783 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:44:39,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:44:39,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221818387] [2022-11-02 20:44:39,784 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221818387] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:44:39,784 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:44:39,784 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:44:39,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820752951] [2022-11-02 20:44:39,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:44:39,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:44:39,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:44:39,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:44:39,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:44:39,786 INFO L87 Difference]: Start difference. First operand 207 states and 423 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states 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 20:44:39,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:44:39,819 INFO L93 Difference]: Finished difference Result 195 states and 395 transitions. [2022-11-02 20:44:39,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:44:39,819 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 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 9 [2022-11-02 20:44:39,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:44:39,821 INFO L225 Difference]: With dead ends: 195 [2022-11-02 20:44:39,821 INFO L226 Difference]: Without dead ends: 195 [2022-11-02 20:44:39,821 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 20:44:39,822 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 6 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:44:39,823 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 4 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:44:39,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2022-11-02 20:44:39,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 195. [2022-11-02 20:44:39,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 180 states have (on average 2.1944444444444446) internal successors, (395), 194 states have internal predecessors, (395), 0 states have call successors, (0), 0 states 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 20:44:39,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 395 transitions. [2022-11-02 20:44:39,833 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 395 transitions. Word has length 9 [2022-11-02 20:44:39,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:44:39,834 INFO L495 AbstractCegarLoop]: Abstraction has 195 states and 395 transitions. [2022-11-02 20:44:39,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states 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 20:44:39,834 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 395 transitions. [2022-11-02 20:44:39,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-02 20:44:39,835 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:44:39,835 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:44:39,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-02 20:44:39,836 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2022-11-02 20:44:39,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:44:39,836 INFO L85 PathProgramCache]: Analyzing trace with hash 888657772, now seen corresponding path program 1 times [2022-11-02 20:44:39,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:44:39,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203424692] [2022-11-02 20:44:39,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:44:39,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:44:39,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:39,877 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:44:39,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:44:39,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203424692] [2022-11-02 20:44:39,886 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203424692] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:44:39,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [290812856] [2022-11-02 20:44:39,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:44:39,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:44:39,887 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da23da70-71c9-45a1-a198-a1841d2714ae/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:44:39,888 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da23da70-71c9-45a1-a198-a1841d2714ae/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:44:39,902 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da23da70-71c9-45a1-a198-a1841d2714ae/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-02 20:44:39,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:39,959 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 20:44:39,960 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:44:39,977 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:44:39,978 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:44:39,998 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:44:39,999 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [290812856] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:44:39,999 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:44:39,999 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-11-02 20:44:39,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414231670] [2022-11-02 20:44:39,999 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:44:40,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:44:40,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:44:40,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:44:40,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:44:40,001 INFO L87 Difference]: Start difference. First operand 195 states and 395 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states 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 20:44:40,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:44:40,040 INFO L93 Difference]: Finished difference Result 67 states and 139 transitions. [2022-11-02 20:44:40,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 20:44:40,042 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 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 11 [2022-11-02 20:44:40,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:44:40,043 INFO L225 Difference]: With dead ends: 67 [2022-11-02 20:44:40,043 INFO L226 Difference]: Without dead ends: 67 [2022-11-02 20:44:40,044 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 18 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 20:44:40,044 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 23 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 7 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 20:44:40,045 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 7 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:44:40,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2022-11-02 20:44:40,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2022-11-02 20:44:40,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 66 states have (on average 2.106060606060606) internal successors, (139), 66 states have internal predecessors, (139), 0 states have call successors, (0), 0 states 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 20:44:40,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 139 transitions. [2022-11-02 20:44:40,049 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 139 transitions. Word has length 11 [2022-11-02 20:44:40,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:44:40,049 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 139 transitions. [2022-11-02 20:44:40,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states 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 20:44:40,049 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 139 transitions. [2022-11-02 20:44:40,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-02 20:44:40,050 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:44:40,050 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2022-11-02 20:44:40,091 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da23da70-71c9-45a1-a198-a1841d2714ae/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-02 20:44:40,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da23da70-71c9-45a1-a198-a1841d2714ae/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:44:40,279 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2022-11-02 20:44:40,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:44:40,279 INFO L85 PathProgramCache]: Analyzing trace with hash 922991846, now seen corresponding path program 1 times [2022-11-02 20:44:40,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:44:40,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854309623] [2022-11-02 20:44:40,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:44:40,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:44:40,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:44:40,294 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:44:40,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:44:40,306 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:44:40,307 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-02 20:44:40,307 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2022-11-02 20:44:40,307 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 5 remaining) [2022-11-02 20:44:40,307 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 5 remaining) [2022-11-02 20:44:40,308 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 5 remaining) [2022-11-02 20:44:40,308 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 5 remaining) [2022-11-02 20:44:40,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-02 20:44:40,309 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-11-02 20:44:40,309 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-02 20:44:40,309 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-11-02 20:44:40,327 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-11-02 20:44:40,331 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-02 20:44:40,331 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 89 places, 87 transitions, 218 flow [2022-11-02 20:44:40,331 INFO L112 LiptonReduction]: Starting Lipton reduction on Petri net that has 89 places, 87 transitions, 218 flow [2022-11-02 20:44:40,332 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 89 places, 87 transitions, 218 flow [2022-11-02 20:44:40,428 INFO L130 PetriNetUnfolder]: 47/448 cut-off events. [2022-11-02 20:44:40,428 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2022-11-02 20:44:40,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 503 conditions, 448 events. 47/448 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1461 event pairs, 6 based on Foata normal form. 0/363 useless extension candidates. Maximal degree in co-relation 278. Up to 32 conditions per place. [2022-11-02 20:44:40,435 INFO L118 LiptonReduction]: Number of co-enabled transitions 2040 [2022-11-02 20:44:42,299 INFO L133 LiptonReduction]: Checked pairs total: 2679 [2022-11-02 20:44:42,299 INFO L135 LiptonReduction]: Total number of compositions: 70 [2022-11-02 20:44:42,300 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 26 transitions, 96 flow [2022-11-02 20:44:42,338 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 701 states, 646 states have (on average 2.626934984520124) internal successors, (1697), 700 states have internal predecessors, (1697), 0 states have call successors, (0), 0 states 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 20:44:42,340 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:44:42,341 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;@2a107e29, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:44:42,341 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-11-02 20:44:42,343 INFO L276 IsEmpty]: Start isEmpty. Operand has 701 states, 646 states have (on average 2.626934984520124) internal successors, (1697), 700 states have internal predecessors, (1697), 0 states have call successors, (0), 0 states 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 20:44:42,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-02 20:44:42,343 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:44:42,344 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-02 20:44:42,344 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2022-11-02 20:44:42,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:44:42,345 INFO L85 PathProgramCache]: Analyzing trace with hash 679567708, now seen corresponding path program 1 times [2022-11-02 20:44:42,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:44:42,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124893025] [2022-11-02 20:44:42,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:44:42,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:44:42,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:42,388 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 20:44:42,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:44:42,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124893025] [2022-11-02 20:44:42,388 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124893025] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:44:42,388 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:44:42,388 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-02 20:44:42,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356166541] [2022-11-02 20:44:42,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:44:42,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:44:42,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:44:42,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:44:42,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:44:42,394 INFO L87 Difference]: Start difference. First operand has 701 states, 646 states have (on average 2.626934984520124) internal successors, (1697), 700 states have internal predecessors, (1697), 0 states have call successors, (0), 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 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states 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 20:44:42,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:44:42,446 INFO L93 Difference]: Finished difference Result 699 states and 1693 transitions. [2022-11-02 20:44:42,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:44:42,447 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 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 5 [2022-11-02 20:44:42,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:44:42,452 INFO L225 Difference]: With dead ends: 699 [2022-11-02 20:44:42,453 INFO L226 Difference]: Without dead ends: 617 [2022-11-02 20:44:42,453 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 20:44:42,454 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 5 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:44:42,456 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 6 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:44:42,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 617 states. [2022-11-02 20:44:42,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 617 to 617. [2022-11-02 20:44:42,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 617 states, 579 states have (on average 2.5958549222797926) internal successors, (1503), 616 states have internal predecessors, (1503), 0 states have call successors, (0), 0 states 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 20:44:42,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 1503 transitions. [2022-11-02 20:44:42,486 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 1503 transitions. Word has length 5 [2022-11-02 20:44:42,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:44:42,486 INFO L495 AbstractCegarLoop]: Abstraction has 617 states and 1503 transitions. [2022-11-02 20:44:42,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states 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 20:44:42,487 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 1503 transitions. [2022-11-02 20:44:42,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-02 20:44:42,488 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:44:42,488 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-02 20:44:42,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-02 20:44:42,489 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2022-11-02 20:44:42,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:44:42,489 INFO L85 PathProgramCache]: Analyzing trace with hash 679567710, now seen corresponding path program 1 times [2022-11-02 20:44:42,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:44:42,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628430973] [2022-11-02 20:44:42,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:44:42,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:44:42,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:42,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:44:42,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:44:42,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628430973] [2022-11-02 20:44:42,534 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628430973] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:44:42,534 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:44:42,534 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-02 20:44:42,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128893213] [2022-11-02 20:44:42,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:44:42,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:44:42,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:44:42,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:44:42,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:44:42,536 INFO L87 Difference]: Start difference. First operand 617 states and 1503 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states 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 20:44:42,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:44:42,568 INFO L93 Difference]: Finished difference Result 587 states and 1424 transitions. [2022-11-02 20:44:42,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:44:42,568 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 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 5 [2022-11-02 20:44:42,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:44:42,572 INFO L225 Difference]: With dead ends: 587 [2022-11-02 20:44:42,572 INFO L226 Difference]: Without dead ends: 587 [2022-11-02 20:44:42,572 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 20:44:42,573 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 19 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 3 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 20:44:42,573 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 3 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:44:42,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 587 states. [2022-11-02 20:44:42,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 587 to 587. [2022-11-02 20:44:42,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 587 states, 553 states have (on average 2.5750452079566) internal successors, (1424), 586 states have internal predecessors, (1424), 0 states have call successors, (0), 0 states 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 20:44:42,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 587 states to 587 states and 1424 transitions. [2022-11-02 20:44:42,592 INFO L78 Accepts]: Start accepts. Automaton has 587 states and 1424 transitions. Word has length 5 [2022-11-02 20:44:42,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:44:42,592 INFO L495 AbstractCegarLoop]: Abstraction has 587 states and 1424 transitions. [2022-11-02 20:44:42,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states 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 20:44:42,592 INFO L276 IsEmpty]: Start isEmpty. Operand 587 states and 1424 transitions. [2022-11-02 20:44:42,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-02 20:44:42,593 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:44:42,593 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-11-02 20:44:42,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-02 20:44:42,593 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2022-11-02 20:44:42,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:44:42,594 INFO L85 PathProgramCache]: Analyzing trace with hash 1589099723, now seen corresponding path program 1 times [2022-11-02 20:44:42,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:44:42,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127525042] [2022-11-02 20:44:42,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:44:42,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:44:42,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:42,634 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:44:42,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:44:42,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127525042] [2022-11-02 20:44:42,635 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127525042] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:44:42,635 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:44:42,635 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:44:42,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720517295] [2022-11-02 20:44:42,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:44:42,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:44:42,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:44:42,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:44:42,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:44:42,637 INFO L87 Difference]: Start difference. First operand 587 states and 1424 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states 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 20:44:42,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:44:42,673 INFO L93 Difference]: Finished difference Result 559 states and 1348 transitions. [2022-11-02 20:44:42,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:44:42,673 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 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 9 [2022-11-02 20:44:42,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:44:42,677 INFO L225 Difference]: With dead ends: 559 [2022-11-02 20:44:42,677 INFO L226 Difference]: Without dead ends: 559 [2022-11-02 20:44:42,678 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 20:44:42,679 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 8 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:44:42,679 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 4 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:44:42,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 559 states. [2022-11-02 20:44:42,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 559 to 559. [2022-11-02 20:44:42,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 559 states, 528 states have (on average 2.553030303030303) internal successors, (1348), 558 states have internal predecessors, (1348), 0 states have call successors, (0), 0 states 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 20:44:42,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 559 states to 559 states and 1348 transitions. [2022-11-02 20:44:42,697 INFO L78 Accepts]: Start accepts. Automaton has 559 states and 1348 transitions. Word has length 9 [2022-11-02 20:44:42,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:44:42,697 INFO L495 AbstractCegarLoop]: Abstraction has 559 states and 1348 transitions. [2022-11-02 20:44:42,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states 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 20:44:42,698 INFO L276 IsEmpty]: Start isEmpty. Operand 559 states and 1348 transitions. [2022-11-02 20:44:42,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-02 20:44:42,699 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:44:42,699 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:44:42,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-02 20:44:42,700 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2022-11-02 20:44:42,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:44:42,700 INFO L85 PathProgramCache]: Analyzing trace with hash -1720521879, now seen corresponding path program 1 times [2022-11-02 20:44:42,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:44:42,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470233762] [2022-11-02 20:44:42,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:44:42,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:44:42,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:42,742 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:44:42,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:44:42,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470233762] [2022-11-02 20:44:42,743 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470233762] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:44:42,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [941328213] [2022-11-02 20:44:42,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:44:42,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:44:42,744 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da23da70-71c9-45a1-a198-a1841d2714ae/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:44:42,747 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da23da70-71c9-45a1-a198-a1841d2714ae/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:44:42,766 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da23da70-71c9-45a1-a198-a1841d2714ae/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-02 20:44:42,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:42,823 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 20:44:42,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:44:42,840 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:44:42,841 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:44:42,865 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:44:42,866 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [941328213] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:44:42,866 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:44:42,866 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2022-11-02 20:44:42,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703657730] [2022-11-02 20:44:42,866 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:44:42,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:44:42,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:44:42,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:44:42,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:44:42,868 INFO L87 Difference]: Start difference. First operand 559 states and 1348 transitions. Second operand has 6 states, 6 states have (on average 3.0) 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 20:44:42,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:44:42,934 INFO L93 Difference]: Finished difference Result 559 states and 1334 transitions. [2022-11-02 20:44:42,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 20:44:42,935 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) 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 11 [2022-11-02 20:44:42,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:44:42,938 INFO L225 Difference]: With dead ends: 559 [2022-11-02 20:44:42,938 INFO L226 Difference]: Without dead ends: 559 [2022-11-02 20:44:42,938 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:44:42,939 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 37 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:44:42,940 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 9 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:44:42,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 559 states. [2022-11-02 20:44:42,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 559 to 559. [2022-11-02 20:44:42,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 559 states, 528 states have (on average 2.5265151515151514) internal successors, (1334), 558 states have internal predecessors, (1334), 0 states have call successors, (0), 0 states 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 20:44:42,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 559 states to 559 states and 1334 transitions. [2022-11-02 20:44:42,957 INFO L78 Accepts]: Start accepts. Automaton has 559 states and 1334 transitions. Word has length 11 [2022-11-02 20:44:42,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:44:42,958 INFO L495 AbstractCegarLoop]: Abstraction has 559 states and 1334 transitions. [2022-11-02 20:44:42,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) 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 20:44:42,959 INFO L276 IsEmpty]: Start isEmpty. Operand 559 states and 1334 transitions. [2022-11-02 20:44:42,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-02 20:44:42,964 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:44:42,964 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2022-11-02 20:44:43,003 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da23da70-71c9-45a1-a198-a1841d2714ae/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-02 20:44:43,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da23da70-71c9-45a1-a198-a1841d2714ae/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-02 20:44:43,181 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2022-11-02 20:44:43,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:44:43,181 INFO L85 PathProgramCache]: Analyzing trace with hash 1713436660, now seen corresponding path program 1 times [2022-11-02 20:44:43,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:44:43,182 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33335355] [2022-11-02 20:44:43,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:44:43,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:44:43,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:44:43,198 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:44:43,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:44:43,213 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:44:43,213 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-02 20:44:43,213 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2022-11-02 20:44:43,213 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 5 remaining) [2022-11-02 20:44:43,213 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 5 remaining) [2022-11-02 20:44:43,214 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 5 remaining) [2022-11-02 20:44:43,214 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 5 remaining) [2022-11-02 20:44:43,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-02 20:44:43,214 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-11-02 20:44:43,215 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-02 20:44:43,215 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2022-11-02 20:44:43,230 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2022-11-02 20:44:43,232 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-02 20:44:43,232 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 97 places, 94 transitions, 248 flow [2022-11-02 20:44:43,233 INFO L112 LiptonReduction]: Starting Lipton reduction on Petri net that has 97 places, 94 transitions, 248 flow [2022-11-02 20:44:43,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 97 places, 94 transitions, 248 flow [2022-11-02 20:44:43,357 INFO L130 PetriNetUnfolder]: 98/810 cut-off events. [2022-11-02 20:44:43,357 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2022-11-02 20:44:43,361 INFO L83 FinitePrefix]: Finished finitePrefix Result has 921 conditions, 810 events. 98/810 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 3574 event pairs, 23 based on Foata normal form. 0/656 useless extension candidates. Maximal degree in co-relation 493. Up to 80 conditions per place. [2022-11-02 20:44:43,391 INFO L118 LiptonReduction]: Number of co-enabled transitions 2750 [2022-11-02 20:44:45,428 INFO L133 LiptonReduction]: Checked pairs total: 3518 [2022-11-02 20:44:45,428 INFO L135 LiptonReduction]: Total number of compositions: 75 [2022-11-02 20:44:45,429 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 35 places, 29 transitions, 118 flow [2022-11-02 20:44:45,505 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 1979 states, 1874 states have (on average 2.956776947705443) internal successors, (5541), 1978 states have internal predecessors, (5541), 0 states have call successors, (0), 0 states 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 20:44:45,508 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:44:45,509 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;@2a107e29, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:44:45,509 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-11-02 20:44:45,515 INFO L276 IsEmpty]: Start isEmpty. Operand has 1979 states, 1874 states have (on average 2.956776947705443) internal successors, (5541), 1978 states have internal predecessors, (5541), 0 states have call successors, (0), 0 states 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 20:44:45,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-02 20:44:45,515 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:44:45,515 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-02 20:44:45,516 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2022-11-02 20:44:45,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:44:45,516 INFO L85 PathProgramCache]: Analyzing trace with hash 848054550, now seen corresponding path program 1 times [2022-11-02 20:44:45,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:44:45,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060709245] [2022-11-02 20:44:45,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:44:45,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:44:45,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:45,542 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 20:44:45,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:44:45,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060709245] [2022-11-02 20:44:45,543 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060709245] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:44:45,543 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:44:45,543 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-02 20:44:45,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062169164] [2022-11-02 20:44:45,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:44:45,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:44:45,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:44:45,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:44:45,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:44:45,550 INFO L87 Difference]: Start difference. First operand has 1979 states, 1874 states have (on average 2.956776947705443) internal successors, (5541), 1978 states have internal predecessors, (5541), 0 states have call successors, (0), 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 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states 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 20:44:45,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:44:45,615 INFO L93 Difference]: Finished difference Result 1975 states and 5534 transitions. [2022-11-02 20:44:45,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:44:45,615 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 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 5 [2022-11-02 20:44:45,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:44:45,627 INFO L225 Difference]: With dead ends: 1975 [2022-11-02 20:44:45,628 INFO L226 Difference]: Without dead ends: 1731 [2022-11-02 20:44:45,628 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 20:44:45,629 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 1 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:44:45,629 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 6 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:44:45,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1731 states. [2022-11-02 20:44:45,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1731 to 1731. [2022-11-02 20:44:45,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1731 states, 1660 states have (on average 2.9427710843373496) internal successors, (4885), 1730 states have internal predecessors, (4885), 0 states have call successors, (0), 0 states 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 20:44:45,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1731 states to 1731 states and 4885 transitions. [2022-11-02 20:44:45,696 INFO L78 Accepts]: Start accepts. Automaton has 1731 states and 4885 transitions. Word has length 5 [2022-11-02 20:44:45,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:44:45,697 INFO L495 AbstractCegarLoop]: Abstraction has 1731 states and 4885 transitions. [2022-11-02 20:44:45,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states 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 20:44:45,697 INFO L276 IsEmpty]: Start isEmpty. Operand 1731 states and 4885 transitions. [2022-11-02 20:44:45,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-02 20:44:45,698 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:44:45,698 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-11-02 20:44:45,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-02 20:44:45,698 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2022-11-02 20:44:45,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:44:45,699 INFO L85 PathProgramCache]: Analyzing trace with hash 342296826, now seen corresponding path program 1 times [2022-11-02 20:44:45,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:44:45,699 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654665432] [2022-11-02 20:44:45,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:44:45,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:44:45,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:45,762 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 20:44:45,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:44:45,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654665432] [2022-11-02 20:44:45,763 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654665432] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:44:45,763 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:44:45,763 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:44:45,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952109576] [2022-11-02 20:44:45,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:44:45,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:44:45,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:44:45,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:44:45,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:44:45,765 INFO L87 Difference]: Start difference. First operand 1731 states and 4885 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states 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 20:44:45,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:44:45,813 INFO L93 Difference]: Finished difference Result 1671 states and 4697 transitions. [2022-11-02 20:44:45,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:44:45,814 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 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 9 [2022-11-02 20:44:45,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:44:45,825 INFO L225 Difference]: With dead ends: 1671 [2022-11-02 20:44:45,826 INFO L226 Difference]: Without dead ends: 1671 [2022-11-02 20:44:45,826 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 20:44:45,827 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 22 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:44:45,827 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 3 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:44:45,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1671 states. [2022-11-02 20:44:45,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1671 to 1671. [2022-11-02 20:44:45,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1671 states, 1604 states have (on average 2.928304239401496) internal successors, (4697), 1670 states have internal predecessors, (4697), 0 states have call successors, (0), 0 states 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 20:44:45,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1671 states to 1671 states and 4697 transitions. [2022-11-02 20:44:45,892 INFO L78 Accepts]: Start accepts. Automaton has 1671 states and 4697 transitions. Word has length 9 [2022-11-02 20:44:45,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:44:45,893 INFO L495 AbstractCegarLoop]: Abstraction has 1671 states and 4697 transitions. [2022-11-02 20:44:45,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states 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 20:44:45,893 INFO L276 IsEmpty]: Start isEmpty. Operand 1671 states and 4697 transitions. [2022-11-02 20:44:45,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-02 20:44:45,895 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:44:45,895 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-11-02 20:44:45,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-02 20:44:45,897 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2022-11-02 20:44:45,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:44:45,897 INFO L85 PathProgramCache]: Analyzing trace with hash 342296814, now seen corresponding path program 1 times [2022-11-02 20:44:45,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:44:45,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852083109] [2022-11-02 20:44:45,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:44:45,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:44:45,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:45,960 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:44:45,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:44:45,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852083109] [2022-11-02 20:44:45,961 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852083109] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:44:45,961 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:44:45,961 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:44:45,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427611657] [2022-11-02 20:44:45,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:44:45,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:44:45,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:44:45,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:44:45,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:44:45,962 INFO L87 Difference]: Start difference. First operand 1671 states and 4697 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states 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 20:44:46,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:44:46,019 INFO L93 Difference]: Finished difference Result 1611 states and 4509 transitions. [2022-11-02 20:44:46,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:44:46,020 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 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 9 [2022-11-02 20:44:46,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:44:46,029 INFO L225 Difference]: With dead ends: 1611 [2022-11-02 20:44:46,030 INFO L226 Difference]: Without dead ends: 1611 [2022-11-02 20:44:46,030 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 20:44:46,031 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 10 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:44:46,031 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 4 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:44:46,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1611 states. [2022-11-02 20:44:46,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1611 to 1611. [2022-11-02 20:44:46,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1611 states, 1548 states have (on average 2.9127906976744184) internal successors, (4509), 1610 states have internal predecessors, (4509), 0 states have call successors, (0), 0 states 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 20:44:46,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1611 states to 1611 states and 4509 transitions. [2022-11-02 20:44:46,087 INFO L78 Accepts]: Start accepts. Automaton has 1611 states and 4509 transitions. Word has length 9 [2022-11-02 20:44:46,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:44:46,087 INFO L495 AbstractCegarLoop]: Abstraction has 1611 states and 4509 transitions. [2022-11-02 20:44:46,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states 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 20:44:46,088 INFO L276 IsEmpty]: Start isEmpty. Operand 1611 states and 4509 transitions. [2022-11-02 20:44:46,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-02 20:44:46,089 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:44:46,089 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:44:46,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-02 20:44:46,089 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2022-11-02 20:44:46,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:44:46,090 INFO L85 PathProgramCache]: Analyzing trace with hash 520472062, now seen corresponding path program 1 times [2022-11-02 20:44:46,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:44:46,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943647115] [2022-11-02 20:44:46,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:44:46,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:44:46,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:46,132 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:44:46,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:44:46,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943647115] [2022-11-02 20:44:46,133 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943647115] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:44:46,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [898622154] [2022-11-02 20:44:46,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:44:46,133 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:44:46,134 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da23da70-71c9-45a1-a198-a1841d2714ae/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:44:46,135 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da23da70-71c9-45a1-a198-a1841d2714ae/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:44:46,151 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da23da70-71c9-45a1-a198-a1841d2714ae/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-02 20:44:46,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:46,228 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 20:44:46,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:44:46,251 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:44:46,251 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:44:46,291 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:44:46,292 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [898622154] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:44:46,292 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:44:46,292 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-11-02 20:44:46,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143085094] [2022-11-02 20:44:46,293 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:44:46,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:44:46,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:44:46,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:44:46,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:44:46,294 INFO L87 Difference]: Start difference. First operand 1611 states and 4509 transitions. Second operand has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 6 states have internal predecessors, (24), 0 states have call successors, (0), 0 states 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 20:44:46,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:44:46,412 INFO L93 Difference]: Finished difference Result 1611 states and 4495 transitions. [2022-11-02 20:44:46,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 20:44:46,413 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 6 states have internal predecessors, (24), 0 states have call successors, (0), 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 11 [2022-11-02 20:44:46,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:44:46,423 INFO L225 Difference]: With dead ends: 1611 [2022-11-02 20:44:46,423 INFO L226 Difference]: Without dead ends: 1611 [2022-11-02 20:44:46,423 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 18 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 20:44:46,424 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 34 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:44:46,424 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 9 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:44:46,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1611 states. [2022-11-02 20:44:46,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1611 to 1611. [2022-11-02 20:44:46,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1611 states, 1548 states have (on average 2.90374677002584) internal successors, (4495), 1610 states have internal predecessors, (4495), 0 states have call successors, (0), 0 states 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 20:44:46,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1611 states to 1611 states and 4495 transitions. [2022-11-02 20:44:46,487 INFO L78 Accepts]: Start accepts. Automaton has 1611 states and 4495 transitions. Word has length 11 [2022-11-02 20:44:46,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:44:46,488 INFO L495 AbstractCegarLoop]: Abstraction has 1611 states and 4495 transitions. [2022-11-02 20:44:46,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 6 states have internal predecessors, (24), 0 states have call successors, (0), 0 states 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 20:44:46,488 INFO L276 IsEmpty]: Start isEmpty. Operand 1611 states and 4495 transitions. [2022-11-02 20:44:46,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-02 20:44:46,489 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:44:46,489 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:44:46,529 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da23da70-71c9-45a1-a198-a1841d2714ae/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-02 20:44:46,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da23da70-71c9-45a1-a198-a1841d2714ae/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:44:46,690 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2022-11-02 20:44:46,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:44:46,690 INFO L85 PathProgramCache]: Analyzing trace with hash 1562680047, now seen corresponding path program 1 times [2022-11-02 20:44:46,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:44:46,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990949888] [2022-11-02 20:44:46,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:44:46,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:44:46,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:46,762 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-02 20:44:46,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:44:46,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990949888] [2022-11-02 20:44:46,762 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990949888] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:44:46,762 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:44:46,762 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:44:46,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353281696] [2022-11-02 20:44:46,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:44:46,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:44:46,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:44:46,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:44:46,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:44:46,764 INFO L87 Difference]: Start difference. First operand 1611 states and 4495 transitions. Second operand has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 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 20:44:46,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:44:46,822 INFO L93 Difference]: Finished difference Result 1547 states and 4287 transitions. [2022-11-02 20:44:46,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:44:46,823 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 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 23 [2022-11-02 20:44:46,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:44:46,831 INFO L225 Difference]: With dead ends: 1547 [2022-11-02 20:44:46,831 INFO L226 Difference]: Without dead ends: 1547 [2022-11-02 20:44:46,832 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 20:44:46,832 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 9 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:44:46,833 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 6 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:44:46,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1547 states. [2022-11-02 20:44:46,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1547 to 1547. [2022-11-02 20:44:46,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1547 states, 1494 states have (on average 2.8694779116465865) internal successors, (4287), 1546 states have internal predecessors, (4287), 0 states have call successors, (0), 0 states 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 20:44:46,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1547 states to 1547 states and 4287 transitions. [2022-11-02 20:44:46,876 INFO L78 Accepts]: Start accepts. Automaton has 1547 states and 4287 transitions. Word has length 23 [2022-11-02 20:44:46,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:44:46,877 INFO L495 AbstractCegarLoop]: Abstraction has 1547 states and 4287 transitions. [2022-11-02 20:44:46,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 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 20:44:46,877 INFO L276 IsEmpty]: Start isEmpty. Operand 1547 states and 4287 transitions. [2022-11-02 20:44:46,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-02 20:44:46,878 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:44:46,879 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:44:46,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-02 20:44:46,879 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2022-11-02 20:44:46,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:44:46,879 INFO L85 PathProgramCache]: Analyzing trace with hash -1777468794, now seen corresponding path program 1 times [2022-11-02 20:44:46,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:44:46,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327406665] [2022-11-02 20:44:46,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:44:46,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:44:46,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:44:46,899 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:44:46,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:44:46,913 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:44:46,913 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-02 20:44:46,913 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2022-11-02 20:44:46,913 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 5 remaining) [2022-11-02 20:44:46,913 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 5 remaining) [2022-11-02 20:44:46,914 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 5 remaining) [2022-11-02 20:44:46,914 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 5 remaining) [2022-11-02 20:44:46,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-02 20:44:46,914 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2022-11-02 20:44:46,915 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-02 20:44:46,915 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2022-11-02 20:44:46,939 INFO L144 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2022-11-02 20:44:46,941 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-02 20:44:46,941 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 105 places, 101 transitions, 280 flow [2022-11-02 20:44:46,941 INFO L112 LiptonReduction]: Starting Lipton reduction on Petri net that has 105 places, 101 transitions, 280 flow [2022-11-02 20:44:46,941 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 105 places, 101 transitions, 280 flow [2022-11-02 20:44:47,180 INFO L130 PetriNetUnfolder]: 213/1524 cut-off events. [2022-11-02 20:44:47,180 INFO L131 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2022-11-02 20:44:47,187 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1756 conditions, 1524 events. 213/1524 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 8686 event pairs, 72 based on Foata normal form. 0/1237 useless extension candidates. Maximal degree in co-relation 910. Up to 192 conditions per place. [2022-11-02 20:44:47,206 INFO L118 LiptonReduction]: Number of co-enabled transitions 3540 [2022-11-02 20:44:49,397 INFO L133 LiptonReduction]: Checked pairs total: 5675 [2022-11-02 20:44:49,397 INFO L135 LiptonReduction]: Total number of compositions: 78 [2022-11-02 20:44:49,398 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 39 places, 32 transitions, 142 flow [2022-11-02 20:44:49,608 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 5669 states, 5466 states have (on average 3.296194657885108) internal successors, (18017), 5668 states have internal predecessors, (18017), 0 states have call successors, (0), 0 states 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 20:44:49,609 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:44:49,609 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;@2a107e29, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:44:49,610 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-11-02 20:44:49,621 INFO L276 IsEmpty]: Start isEmpty. Operand has 5669 states, 5466 states have (on average 3.296194657885108) internal successors, (18017), 5668 states have internal predecessors, (18017), 0 states have call successors, (0), 0 states 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 20:44:49,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-02 20:44:49,622 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:44:49,622 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-02 20:44:49,622 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2022-11-02 20:44:49,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:44:49,623 INFO L85 PathProgramCache]: Analyzing trace with hash 1025401184, now seen corresponding path program 1 times [2022-11-02 20:44:49,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:44:49,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640363204] [2022-11-02 20:44:49,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:44:49,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:44:49,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:49,653 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 20:44:49,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:44:49,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640363204] [2022-11-02 20:44:49,654 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640363204] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:44:49,654 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:44:49,654 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-02 20:44:49,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625675951] [2022-11-02 20:44:49,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:44:49,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:44:49,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:44:49,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:44:49,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:44:49,668 INFO L87 Difference]: Start difference. First operand has 5669 states, 5466 states have (on average 3.296194657885108) internal successors, (18017), 5668 states have internal predecessors, (18017), 0 states have call successors, (0), 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 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states 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 20:44:49,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:44:49,772 INFO L93 Difference]: Finished difference Result 5665 states and 18010 transitions. [2022-11-02 20:44:49,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:44:49,773 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 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 5 [2022-11-02 20:44:49,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:44:49,833 INFO L225 Difference]: With dead ends: 5665 [2022-11-02 20:44:49,833 INFO L226 Difference]: Without dead ends: 4935 [2022-11-02 20:44:49,833 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 20:44:49,834 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 1 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:44:49,834 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 6 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:44:49,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4935 states. [2022-11-02 20:44:50,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4935 to 4935. [2022-11-02 20:44:50,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4935 states, 4798 states have (on average 3.2976240100041685) internal successors, (15822), 4934 states have internal predecessors, (15822), 0 states have call successors, (0), 0 states 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 20:44:50,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4935 states to 4935 states and 15822 transitions. [2022-11-02 20:44:50,060 INFO L78 Accepts]: Start accepts. Automaton has 4935 states and 15822 transitions. Word has length 5 [2022-11-02 20:44:50,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:44:50,060 INFO L495 AbstractCegarLoop]: Abstraction has 4935 states and 15822 transitions. [2022-11-02 20:44:50,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states 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 20:44:50,061 INFO L276 IsEmpty]: Start isEmpty. Operand 4935 states and 15822 transitions. [2022-11-02 20:44:50,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-02 20:44:50,061 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:44:50,061 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-11-02 20:44:50,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-02 20:44:50,062 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2022-11-02 20:44:50,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:44:50,062 INFO L85 PathProgramCache]: Analyzing trace with hash -583136544, now seen corresponding path program 1 times [2022-11-02 20:44:50,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:44:50,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63400171] [2022-11-02 20:44:50,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:44:50,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:44:50,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:50,107 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:44:50,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:44:50,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63400171] [2022-11-02 20:44:50,107 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63400171] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:44:50,107 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:44:50,108 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:44:50,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730708016] [2022-11-02 20:44:50,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:44:50,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:44:50,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:44:50,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:44:50,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:44:50,110 INFO L87 Difference]: Start difference. First operand 4935 states and 15822 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states 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 20:44:50,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:44:50,202 INFO L93 Difference]: Finished difference Result 4811 states and 15378 transitions. [2022-11-02 20:44:50,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:44:50,203 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 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 9 [2022-11-02 20:44:50,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:44:50,227 INFO L225 Difference]: With dead ends: 4811 [2022-11-02 20:44:50,227 INFO L226 Difference]: Without dead ends: 4811 [2022-11-02 20:44:50,227 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 20:44:50,228 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 13 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:44:50,228 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 4 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:44:50,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4811 states. [2022-11-02 20:44:50,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4811 to 4811. [2022-11-02 20:44:50,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4811 states, 4679 states have (on average 3.2865997007907675) internal successors, (15378), 4810 states have internal predecessors, (15378), 0 states have call successors, (0), 0 states 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 20:44:50,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4811 states to 4811 states and 15378 transitions. [2022-11-02 20:44:50,510 INFO L78 Accepts]: Start accepts. Automaton has 4811 states and 15378 transitions. Word has length 9 [2022-11-02 20:44:50,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:44:50,510 INFO L495 AbstractCegarLoop]: Abstraction has 4811 states and 15378 transitions. [2022-11-02 20:44:50,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states 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 20:44:50,511 INFO L276 IsEmpty]: Start isEmpty. Operand 4811 states and 15378 transitions. [2022-11-02 20:44:50,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-02 20:44:50,513 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:44:50,513 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-11-02 20:44:50,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-11-02 20:44:50,515 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2022-11-02 20:44:50,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:44:50,515 INFO L85 PathProgramCache]: Analyzing trace with hash -583136524, now seen corresponding path program 1 times [2022-11-02 20:44:50,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:44:50,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123358096] [2022-11-02 20:44:50,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:44:50,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:44:50,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:50,551 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 20:44:50,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:44:50,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123358096] [2022-11-02 20:44:50,552 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123358096] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:44:50,552 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:44:50,552 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:44:50,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802993681] [2022-11-02 20:44:50,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:44:50,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:44:50,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:44:50,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:44:50,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:44:50,554 INFO L87 Difference]: Start difference. First operand 4811 states and 15378 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states 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 20:44:50,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:44:50,678 INFO L93 Difference]: Finished difference Result 4687 states and 14934 transitions. [2022-11-02 20:44:50,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:44:50,679 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 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 9 [2022-11-02 20:44:50,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:44:50,700 INFO L225 Difference]: With dead ends: 4687 [2022-11-02 20:44:50,700 INFO L226 Difference]: Without dead ends: 4687 [2022-11-02 20:44:50,701 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 20:44:50,702 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 24 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 3 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 20:44:50,702 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 3 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:44:50,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4687 states. [2022-11-02 20:44:50,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4687 to 4687. [2022-11-02 20:44:50,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4687 states, 4560 states have (on average 3.275) internal successors, (14934), 4686 states have internal predecessors, (14934), 0 states have call successors, (0), 0 states 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 20:44:50,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4687 states to 4687 states and 14934 transitions. [2022-11-02 20:44:50,902 INFO L78 Accepts]: Start accepts. Automaton has 4687 states and 14934 transitions. Word has length 9 [2022-11-02 20:44:50,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:44:50,903 INFO L495 AbstractCegarLoop]: Abstraction has 4687 states and 14934 transitions. [2022-11-02 20:44:50,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states 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 20:44:50,903 INFO L276 IsEmpty]: Start isEmpty. Operand 4687 states and 14934 transitions. [2022-11-02 20:44:50,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-02 20:44:50,903 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:44:50,904 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:44:50,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-11-02 20:44:50,904 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2022-11-02 20:44:50,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:44:50,905 INFO L85 PathProgramCache]: Analyzing trace with hash -1748699529, now seen corresponding path program 1 times [2022-11-02 20:44:50,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:44:50,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271726083] [2022-11-02 20:44:50,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:44:50,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:44:50,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:50,939 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:44:50,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:44:50,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271726083] [2022-11-02 20:44:50,940 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271726083] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:44:50,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [94273654] [2022-11-02 20:44:50,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:44:50,940 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:44:50,941 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da23da70-71c9-45a1-a198-a1841d2714ae/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:44:50,942 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da23da70-71c9-45a1-a198-a1841d2714ae/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:44:50,962 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da23da70-71c9-45a1-a198-a1841d2714ae/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-02 20:44:51,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:51,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 20:44:51,054 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:44:51,067 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:44:51,068 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:44:51,087 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:44:51,088 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [94273654] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:44:51,088 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:44:51,088 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-11-02 20:44:51,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016704825] [2022-11-02 20:44:51,089 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:44:51,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:44:51,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:44:51,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:44:51,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:44:51,090 INFO L87 Difference]: Start difference. First operand 4687 states and 14934 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states 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 20:44:51,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:44:51,259 INFO L93 Difference]: Finished difference Result 4687 states and 14920 transitions. [2022-11-02 20:44:51,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 20:44:51,259 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 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 11 [2022-11-02 20:44:51,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:44:51,279 INFO L225 Difference]: With dead ends: 4687 [2022-11-02 20:44:51,280 INFO L226 Difference]: Without dead ends: 4687 [2022-11-02 20:44:51,280 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 18 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 20:44:51,282 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 28 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:44:51,283 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 12 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:44:51,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4687 states. [2022-11-02 20:44:51,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4687 to 4687. [2022-11-02 20:44:51,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4687 states, 4560 states have (on average 3.2719298245614037) internal successors, (14920), 4686 states have internal predecessors, (14920), 0 states have call successors, (0), 0 states 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 20:44:51,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4687 states to 4687 states and 14920 transitions. [2022-11-02 20:44:51,594 INFO L78 Accepts]: Start accepts. Automaton has 4687 states and 14920 transitions. Word has length 11 [2022-11-02 20:44:51,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:44:51,595 INFO L495 AbstractCegarLoop]: Abstraction has 4687 states and 14920 transitions. [2022-11-02 20:44:51,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states 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 20:44:51,595 INFO L276 IsEmpty]: Start isEmpty. Operand 4687 states and 14920 transitions. [2022-11-02 20:44:51,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-02 20:44:51,597 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:44:51,597 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:44:51,636 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da23da70-71c9-45a1-a198-a1841d2714ae/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-11-02 20:44:51,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da23da70-71c9-45a1-a198-a1841d2714ae/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-11-02 20:44:51,814 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2022-11-02 20:44:51,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:44:51,815 INFO L85 PathProgramCache]: Analyzing trace with hash -71695606, now seen corresponding path program 1 times [2022-11-02 20:44:51,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:44:51,815 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000115896] [2022-11-02 20:44:51,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:44:51,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:44:51,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:51,909 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-02 20:44:51,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:44:51,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000115896] [2022-11-02 20:44:51,910 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000115896] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:44:51,911 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:44:51,911 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:44:51,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642068083] [2022-11-02 20:44:51,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:44:51,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:44:51,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:44:51,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:44:51,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:44:51,913 INFO L87 Difference]: Start difference. First operand 4687 states and 14920 transitions. Second operand has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 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 20:44:52,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:44:52,007 INFO L93 Difference]: Finished difference Result 4623 states and 14600 transitions. [2022-11-02 20:44:52,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:44:52,007 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 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 23 [2022-11-02 20:44:52,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:44:52,031 INFO L225 Difference]: With dead ends: 4623 [2022-11-02 20:44:52,031 INFO L226 Difference]: Without dead ends: 4623 [2022-11-02 20:44:52,033 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 20:44:52,037 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 11 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 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 20:44:52,038 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 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 20:44:52,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4623 states. [2022-11-02 20:44:52,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4623 to 4623. [2022-11-02 20:44:52,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4623 states, 4508 states have (on average 3.23868677905945) internal successors, (14600), 4622 states have internal predecessors, (14600), 0 states have call successors, (0), 0 states 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 20:44:52,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4623 states to 4623 states and 14600 transitions. [2022-11-02 20:44:52,324 INFO L78 Accepts]: Start accepts. Automaton has 4623 states and 14600 transitions. Word has length 23 [2022-11-02 20:44:52,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:44:52,324 INFO L495 AbstractCegarLoop]: Abstraction has 4623 states and 14600 transitions. [2022-11-02 20:44:52,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 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 20:44:52,325 INFO L276 IsEmpty]: Start isEmpty. Operand 4623 states and 14600 transitions. [2022-11-02 20:44:52,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-02 20:44:52,327 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:44:52,328 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:44:52,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-11-02 20:44:52,328 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2022-11-02 20:44:52,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:44:52,329 INFO L85 PathProgramCache]: Analyzing trace with hash 1782765296, now seen corresponding path program 1 times [2022-11-02 20:44:52,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:44:52,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969788045] [2022-11-02 20:44:52,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:44:52,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:44:52,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:44:52,363 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:44:52,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:44:52,390 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:44:52,390 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-02 20:44:52,390 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2022-11-02 20:44:52,391 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 5 remaining) [2022-11-02 20:44:52,391 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 5 remaining) [2022-11-02 20:44:52,391 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 5 remaining) [2022-11-02 20:44:52,391 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 5 remaining) [2022-11-02 20:44:52,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-11-02 20:44:52,392 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2022-11-02 20:44:52,394 WARN L233 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-02 20:44:52,394 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2022-11-02 20:44:52,418 INFO L144 ThreadInstanceAdder]: Constructed 7 joinOtherThreadTransitions. [2022-11-02 20:44:52,420 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-02 20:44:52,420 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 113 places, 108 transitions, 314 flow [2022-11-02 20:44:52,421 INFO L112 LiptonReduction]: Starting Lipton reduction on Petri net that has 113 places, 108 transitions, 314 flow [2022-11-02 20:44:52,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 113 places, 108 transitions, 314 flow [2022-11-02 20:44:52,956 INFO L130 PetriNetUnfolder]: 472/2958 cut-off events. [2022-11-02 20:44:52,956 INFO L131 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2022-11-02 20:44:52,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3456 conditions, 2958 events. 472/2958 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 20933 event pairs, 201 based on Foata normal form. 0/2410 useless extension candidates. Maximal degree in co-relation 1745. Up to 448 conditions per place. [2022-11-02 20:44:53,006 INFO L118 LiptonReduction]: Number of co-enabled transitions 4410 [2022-11-02 20:44:55,239 INFO L133 LiptonReduction]: Checked pairs total: 7018 [2022-11-02 20:44:55,239 INFO L135 LiptonReduction]: Total number of compositions: 83 [2022-11-02 20:44:55,242 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 43 places, 35 transitions, 168 flow [2022-11-02 20:44:55,910 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 16451 states, 16054 states have (on average 3.6430173165566213) internal successors, (58485), 16450 states have internal predecessors, (58485), 0 states have call successors, (0), 0 states 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 20:44:55,911 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:44:55,911 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;@2a107e29, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:44:55,912 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-11-02 20:44:55,941 INFO L276 IsEmpty]: Start isEmpty. Operand has 16451 states, 16054 states have (on average 3.6430173165566213) internal successors, (58485), 16450 states have internal predecessors, (58485), 0 states have call successors, (0), 0 states 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 20:44:55,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-02 20:44:55,942 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:44:55,942 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-02 20:44:55,942 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2022-11-02 20:44:55,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:44:55,944 INFO L85 PathProgramCache]: Analyzing trace with hash 1214286898, now seen corresponding path program 1 times [2022-11-02 20:44:55,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:44:55,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862932931] [2022-11-02 20:44:55,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:44:55,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:44:55,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:55,966 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 20:44:55,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:44:55,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862932931] [2022-11-02 20:44:55,967 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862932931] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:44:55,967 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:44:55,967 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-02 20:44:55,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408538413] [2022-11-02 20:44:55,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:44:55,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:44:55,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:44:55,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:44:55,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:44:55,998 INFO L87 Difference]: Start difference. First operand has 16451 states, 16054 states have (on average 3.6430173165566213) internal successors, (58485), 16450 states have internal predecessors, (58485), 0 states have call successors, (0), 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 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states 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 20:44:56,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:44:56,225 INFO L93 Difference]: Finished difference Result 16449 states and 58481 transitions. [2022-11-02 20:44:56,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:44:56,226 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 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 5 [2022-11-02 20:44:56,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:44:56,586 INFO L225 Difference]: With dead ends: 16449 [2022-11-02 20:44:56,587 INFO L226 Difference]: Without dead ends: 14261 [2022-11-02 20:44:56,587 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 20:44:56,587 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 8 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:44:56,588 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 6 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:44:56,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14261 states. [2022-11-02 20:44:57,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14261 to 14261. [2022-11-02 20:44:57,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14261 states, 13993 states have (on average 3.658257700278711) internal successors, (51190), 14260 states have internal predecessors, (51190), 0 states have call successors, (0), 0 states 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 20:44:57,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14261 states to 14261 states and 51190 transitions. [2022-11-02 20:44:57,169 INFO L78 Accepts]: Start accepts. Automaton has 14261 states and 51190 transitions. Word has length 5 [2022-11-02 20:44:57,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:44:57,169 INFO L495 AbstractCegarLoop]: Abstraction has 14261 states and 51190 transitions. [2022-11-02 20:44:57,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states 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 20:44:57,170 INFO L276 IsEmpty]: Start isEmpty. Operand 14261 states and 51190 transitions. [2022-11-02 20:44:57,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-02 20:44:57,170 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:44:57,170 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-02 20:44:57,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-11-02 20:44:57,171 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2022-11-02 20:44:57,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:44:57,172 INFO L85 PathProgramCache]: Analyzing trace with hash 1214286916, now seen corresponding path program 1 times [2022-11-02 20:44:57,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:44:57,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781776882] [2022-11-02 20:44:57,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:44:57,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:44:57,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:57,195 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 20:44:57,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:44:57,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781776882] [2022-11-02 20:44:57,196 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781776882] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:44:57,196 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:44:57,197 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-02 20:44:57,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001544031] [2022-11-02 20:44:57,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:44:57,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:44:57,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:44:57,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:44:57,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:44:57,198 INFO L87 Difference]: Start difference. First operand 14261 states and 51190 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states 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 20:44:57,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:44:57,520 INFO L93 Difference]: Finished difference Result 14007 states and 50167 transitions. [2022-11-02 20:44:57,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:44:57,521 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 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 5 [2022-11-02 20:44:57,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:44:57,602 INFO L225 Difference]: With dead ends: 14007 [2022-11-02 20:44:57,602 INFO L226 Difference]: Without dead ends: 14007 [2022-11-02 20:44:57,603 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 20:44:57,603 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 28 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:44:57,604 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 3 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:44:57,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14007 states. [2022-11-02 20:44:58,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14007 to 14007. [2022-11-02 20:44:58,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14007 states, 13746 states have (on average 3.649570784228139) internal successors, (50167), 14006 states have internal predecessors, (50167), 0 states have call successors, (0), 0 states 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 20:44:58,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14007 states to 14007 states and 50167 transitions. [2022-11-02 20:44:58,287 INFO L78 Accepts]: Start accepts. Automaton has 14007 states and 50167 transitions. Word has length 5 [2022-11-02 20:44:58,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:44:58,287 INFO L495 AbstractCegarLoop]: Abstraction has 14007 states and 50167 transitions. [2022-11-02 20:44:58,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states 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 20:44:58,288 INFO L276 IsEmpty]: Start isEmpty. Operand 14007 states and 50167 transitions. [2022-11-02 20:44:58,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-02 20:44:58,288 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:44:58,288 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-11-02 20:44:58,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-11-02 20:44:58,289 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2022-11-02 20:44:58,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:44:58,289 INFO L85 PathProgramCache]: Analyzing trace with hash -750356034, now seen corresponding path program 1 times [2022-11-02 20:44:58,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:44:58,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823057095] [2022-11-02 20:44:58,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:44:58,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:44:58,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:58,313 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:44:58,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:44:58,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823057095] [2022-11-02 20:44:58,313 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823057095] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:44:58,314 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:44:58,314 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:44:58,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715504139] [2022-11-02 20:44:58,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:44:58,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:44:58,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:44:58,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:44:58,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:44:58,316 INFO L87 Difference]: Start difference. First operand 14007 states and 50167 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states 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 20:44:58,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:44:58,583 INFO L93 Difference]: Finished difference Result 13755 states and 49147 transitions. [2022-11-02 20:44:58,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:44:58,584 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 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 9 [2022-11-02 20:44:58,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:44:58,665 INFO L225 Difference]: With dead ends: 13755 [2022-11-02 20:44:58,665 INFO L226 Difference]: Without dead ends: 13755 [2022-11-02 20:44:58,665 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 20:44:58,666 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 14 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:44:58,668 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 4 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:44:58,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13755 states. [2022-11-02 20:44:59,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13755 to 13755. [2022-11-02 20:44:59,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13755 states, 13500 states have (on average 3.6405185185185185) internal successors, (49147), 13754 states have internal predecessors, (49147), 0 states have call successors, (0), 0 states 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 20:44:59,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13755 states to 13755 states and 49147 transitions. [2022-11-02 20:44:59,300 INFO L78 Accepts]: Start accepts. Automaton has 13755 states and 49147 transitions. Word has length 9 [2022-11-02 20:44:59,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:44:59,301 INFO L495 AbstractCegarLoop]: Abstraction has 13755 states and 49147 transitions. [2022-11-02 20:44:59,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states 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 20:44:59,302 INFO L276 IsEmpty]: Start isEmpty. Operand 13755 states and 49147 transitions. [2022-11-02 20:44:59,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-02 20:44:59,303 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:44:59,303 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:44:59,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-11-02 20:44:59,304 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2022-11-02 20:44:59,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:44:59,304 INFO L85 PathProgramCache]: Analyzing trace with hash -1490945756, now seen corresponding path program 1 times [2022-11-02 20:44:59,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:44:59,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961046726] [2022-11-02 20:44:59,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:44:59,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:44:59,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:59,340 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:44:59,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:44:59,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961046726] [2022-11-02 20:44:59,341 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961046726] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:44:59,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2147230098] [2022-11-02 20:44:59,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:44:59,342 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:44:59,342 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da23da70-71c9-45a1-a198-a1841d2714ae/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:44:59,343 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da23da70-71c9-45a1-a198-a1841d2714ae/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:44:59,362 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da23da70-71c9-45a1-a198-a1841d2714ae/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-02 20:44:59,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:59,446 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 20:44:59,447 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:44:59,465 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:44:59,465 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:44:59,488 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:44:59,489 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2147230098] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:44:59,489 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:44:59,489 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2022-11-02 20:44:59,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974288685] [2022-11-02 20:44:59,490 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:44:59,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:44:59,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:44:59,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:44:59,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:44:59,491 INFO L87 Difference]: Start difference. First operand 13755 states and 49147 transitions. Second operand has 6 states, 6 states have (on average 3.0) 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 20:44:59,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:44:59,713 INFO L93 Difference]: Finished difference Result 13755 states and 49133 transitions. [2022-11-02 20:44:59,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 20:44:59,713 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) 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 11 [2022-11-02 20:44:59,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:44:59,945 INFO L225 Difference]: With dead ends: 13755 [2022-11-02 20:44:59,945 INFO L226 Difference]: Without dead ends: 13755 [2022-11-02 20:44:59,945 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:44:59,947 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 31 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:44:59,947 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 9 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:44:59,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13755 states. [2022-11-02 20:45:00,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13755 to 13755. [2022-11-02 20:45:00,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13755 states, 13500 states have (on average 3.6394814814814813) internal successors, (49133), 13754 states have internal predecessors, (49133), 0 states have call successors, (0), 0 states 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 20:45:00,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13755 states to 13755 states and 49133 transitions. [2022-11-02 20:45:00,499 INFO L78 Accepts]: Start accepts. Automaton has 13755 states and 49133 transitions. Word has length 11 [2022-11-02 20:45:00,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:45:00,500 INFO L495 AbstractCegarLoop]: Abstraction has 13755 states and 49133 transitions. [2022-11-02 20:45:00,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) 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 20:45:00,500 INFO L276 IsEmpty]: Start isEmpty. Operand 13755 states and 49133 transitions. [2022-11-02 20:45:00,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-02 20:45:00,501 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:45:00,502 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:45:00,529 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da23da70-71c9-45a1-a198-a1841d2714ae/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-02 20:45:00,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da23da70-71c9-45a1-a198-a1841d2714ae/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2022-11-02 20:45:00,715 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2022-11-02 20:45:00,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:45:00,716 INFO L85 PathProgramCache]: Analyzing trace with hash -1897468259, now seen corresponding path program 1 times [2022-11-02 20:45:00,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:45:00,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381444824] [2022-11-02 20:45:00,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:45:00,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:45:00,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:45:00,765 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-02 20:45:00,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:45:00,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381444824] [2022-11-02 20:45:00,766 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381444824] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:45:00,766 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:45:00,766 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:45:00,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100565342] [2022-11-02 20:45:00,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:45:00,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:45:00,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:45:00,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:45:00,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:45:00,768 INFO L87 Difference]: Start difference. First operand 13755 states and 49133 transitions. Second operand has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 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 20:45:00,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:45:00,934 INFO L93 Difference]: Finished difference Result 13691 states and 48557 transitions. [2022-11-02 20:45:00,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:45:00,935 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 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 23 [2022-11-02 20:45:00,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:45:00,999 INFO L225 Difference]: With dead ends: 13691 [2022-11-02 20:45:00,999 INFO L226 Difference]: Without dead ends: 13691 [2022-11-02 20:45:01,000 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 20:45:01,001 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 13 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:45:01,001 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 6 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:45:01,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13691 states. [2022-11-02 20:45:01,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13691 to 13691. [2022-11-02 20:45:01,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13691 states, 13450 states have (on average 3.610185873605948) internal successors, (48557), 13690 states have internal predecessors, (48557), 0 states have call successors, (0), 0 states 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 20:45:01,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13691 states to 13691 states and 48557 transitions. [2022-11-02 20:45:01,811 INFO L78 Accepts]: Start accepts. Automaton has 13691 states and 48557 transitions. Word has length 23 [2022-11-02 20:45:01,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:45:01,811 INFO L495 AbstractCegarLoop]: Abstraction has 13691 states and 48557 transitions. [2022-11-02 20:45:01,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 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 20:45:01,812 INFO L276 IsEmpty]: Start isEmpty. Operand 13691 states and 48557 transitions. [2022-11-02 20:45:01,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-02 20:45:01,817 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:45:01,818 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:45:01,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-11-02 20:45:01,818 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2022-11-02 20:45:01,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:45:01,820 INFO L85 PathProgramCache]: Analyzing trace with hash -54045946, now seen corresponding path program 1 times [2022-11-02 20:45:01,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:45:01,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009257261] [2022-11-02 20:45:01,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:45:01,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:45:01,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:45:01,949 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-02 20:45:01,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:45:01,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009257261] [2022-11-02 20:45:01,950 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009257261] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:45:01,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [399447819] [2022-11-02 20:45:01,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:45:01,951 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:45:01,951 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da23da70-71c9-45a1-a198-a1841d2714ae/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:45:01,955 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da23da70-71c9-45a1-a198-a1841d2714ae/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:45:01,970 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da23da70-71c9-45a1-a198-a1841d2714ae/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-02 20:45:02,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:45:02,081 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 20:45:02,083 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:45:02,116 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-02 20:45:02,116 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:45:02,194 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-02 20:45:02,195 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [399447819] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:45:02,195 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:45:02,195 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2022-11-02 20:45:02,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778552376] [2022-11-02 20:45:02,196 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:45:02,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-02 20:45:02,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:45:02,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-02 20:45:02,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2022-11-02 20:45:02,198 INFO L87 Difference]: Start difference. First operand 13691 states and 48557 transitions. Second operand has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 11 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 20:45:02,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:45:02,312 INFO L93 Difference]: Finished difference Result 1147 states and 4543 transitions. [2022-11-02 20:45:02,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 20:45:02,313 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 11 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 28 [2022-11-02 20:45:02,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:45:02,318 INFO L225 Difference]: With dead ends: 1147 [2022-11-02 20:45:02,318 INFO L226 Difference]: Without dead ends: 1147 [2022-11-02 20:45:02,319 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2022-11-02 20:45:02,319 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 82 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:45:02,319 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 10 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:45:02,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1147 states. [2022-11-02 20:45:02,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1147 to 1147. [2022-11-02 20:45:02,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1147 states, 1146 states have (on average 3.9642233856893543) internal successors, (4543), 1146 states have internal predecessors, (4543), 0 states have call successors, (0), 0 states 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 20:45:02,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1147 states to 1147 states and 4543 transitions. [2022-11-02 20:45:02,361 INFO L78 Accepts]: Start accepts. Automaton has 1147 states and 4543 transitions. Word has length 28 [2022-11-02 20:45:02,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:45:02,361 INFO L495 AbstractCegarLoop]: Abstraction has 1147 states and 4543 transitions. [2022-11-02 20:45:02,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 11 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 20:45:02,361 INFO L276 IsEmpty]: Start isEmpty. Operand 1147 states and 4543 transitions. [2022-11-02 20:45:02,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-11-02 20:45:02,365 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:45:02,365 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:45:02,389 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da23da70-71c9-45a1-a198-a1841d2714ae/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-02 20:45:02,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da23da70-71c9-45a1-a198-a1841d2714ae/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:45:02,571 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2022-11-02 20:45:02,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:45:02,571 INFO L85 PathProgramCache]: Analyzing trace with hash -948747254, now seen corresponding path program 1 times [2022-11-02 20:45:02,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:45:02,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957941923] [2022-11-02 20:45:02,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:45:02,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:45:02,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:45:02,593 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:45:02,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:45:02,619 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:45:02,619 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-02 20:45:02,619 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2022-11-02 20:45:02,619 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 5 remaining) [2022-11-02 20:45:02,620 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 5 remaining) [2022-11-02 20:45:02,620 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 5 remaining) [2022-11-02 20:45:02,621 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 5 remaining) [2022-11-02 20:45:02,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-11-02 20:45:02,621 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:45:02,622 WARN L233 ceAbstractionStarter]: 7 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-02 20:45:02,622 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 8 thread instances. [2022-11-02 20:45:02,644 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2022-11-02 20:45:02,645 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-02 20:45:02,646 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 121 places, 115 transitions, 350 flow [2022-11-02 20:45:02,646 INFO L112 LiptonReduction]: Starting Lipton reduction on Petri net that has 121 places, 115 transitions, 350 flow [2022-11-02 20:45:02,646 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 121 places, 115 transitions, 350 flow [2022-11-02 20:45:04,054 INFO L130 PetriNetUnfolder]: 1051/5864 cut-off events. [2022-11-02 20:45:04,054 INFO L131 PetriNetUnfolder]: For 1136/1136 co-relation queries the response was YES. [2022-11-02 20:45:04,091 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6949 conditions, 5864 events. 1051/5864 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 50156 event pairs, 522 based on Foata normal form. 0/4799 useless extension candidates. Maximal degree in co-relation 3445. Up to 1024 conditions per place. [2022-11-02 20:45:04,161 INFO L118 LiptonReduction]: Number of co-enabled transitions 5360 [2022-11-02 20:45:06,314 INFO L133 LiptonReduction]: Checked pairs total: 8646 [2022-11-02 20:45:06,315 INFO L135 LiptonReduction]: Total number of compositions: 86 [2022-11-02 20:45:06,316 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 47 places, 38 transitions, 196 flow [2022-11-02 20:45:07,536 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 48221 states, 47438 states have (on average 3.996142333150639) internal successors, (189569), 48220 states have internal predecessors, (189569), 0 states have call successors, (0), 0 states 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 20:45:07,537 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:45:07,538 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;@2a107e29, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:45:07,538 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-11-02 20:45:07,604 INFO L276 IsEmpty]: Start isEmpty. Operand has 48221 states, 47438 states have (on average 3.996142333150639) internal successors, (189569), 48220 states have internal predecessors, (189569), 0 states have call successors, (0), 0 states 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 20:45:07,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-02 20:45:07,604 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:45:07,604 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-02 20:45:07,604 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2022-11-02 20:45:07,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:45:07,605 INFO L85 PathProgramCache]: Analyzing trace with hash 1412628276, now seen corresponding path program 1 times [2022-11-02 20:45:07,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:45:07,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913386536] [2022-11-02 20:45:07,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:45:07,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:45:07,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:45:07,632 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 20:45:07,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:45:07,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913386536] [2022-11-02 20:45:07,633 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913386536] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:45:07,633 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:45:07,633 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-02 20:45:07,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903235434] [2022-11-02 20:45:07,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:45:07,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:45:07,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:45:07,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:45:07,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:45:07,709 INFO L87 Difference]: Start difference. First operand has 48221 states, 47438 states have (on average 3.996142333150639) internal successors, (189569), 48220 states have internal predecessors, (189569), 0 states have call successors, (0), 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 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states 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 20:45:08,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:45:08,313 INFO L93 Difference]: Finished difference Result 48217 states and 189562 transitions. [2022-11-02 20:45:08,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:45:08,314 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 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 5 [2022-11-02 20:45:08,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:45:08,509 INFO L225 Difference]: With dead ends: 48217 [2022-11-02 20:45:08,509 INFO L226 Difference]: Without dead ends: 41655 [2022-11-02 20:45:08,509 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 20:45:08,509 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 1 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:45:08,510 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 6 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:45:08,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41655 states. [2022-11-02 20:45:10,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41655 to 41655. [2022-11-02 20:45:10,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41655 states, 41130 states have (on average 4.023924142961342) internal successors, (165504), 41654 states have internal predecessors, (165504), 0 states have call successors, (0), 0 states 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 20:45:10,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41655 states to 41655 states and 165504 transitions. [2022-11-02 20:45:10,759 INFO L78 Accepts]: Start accepts. Automaton has 41655 states and 165504 transitions. Word has length 5 [2022-11-02 20:45:10,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:45:10,760 INFO L495 AbstractCegarLoop]: Abstraction has 41655 states and 165504 transitions. [2022-11-02 20:45:10,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states 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 20:45:10,760 INFO L276 IsEmpty]: Start isEmpty. Operand 41655 states and 165504 transitions. [2022-11-02 20:45:10,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-02 20:45:10,760 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:45:10,760 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-11-02 20:45:10,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-11-02 20:45:10,761 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2022-11-02 20:45:10,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:45:10,761 INFO L85 PathProgramCache]: Analyzing trace with hash -79747852, now seen corresponding path program 1 times [2022-11-02 20:45:10,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:45:10,761 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288861687] [2022-11-02 20:45:10,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:45:10,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:45:10,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:45:10,792 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 20:45:10,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:45:10,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288861687] [2022-11-02 20:45:10,793 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288861687] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:45:10,793 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:45:10,793 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:45:10,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111779720] [2022-11-02 20:45:10,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:45:10,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:45:10,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:45:10,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:45:10,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:45:10,795 INFO L87 Difference]: Start difference. First operand 41655 states and 165504 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states 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 20:45:11,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:45:11,090 INFO L93 Difference]: Finished difference Result 41147 states and 163204 transitions. [2022-11-02 20:45:11,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:45:11,091 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 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 9 [2022-11-02 20:45:11,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:45:11,274 INFO L225 Difference]: With dead ends: 41147 [2022-11-02 20:45:11,274 INFO L226 Difference]: Without dead ends: 41147 [2022-11-02 20:45:11,274 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 20:45:11,274 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 31 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:45:11,275 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 3 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:45:11,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41147 states. [2022-11-02 20:45:12,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41147 to 41147. [2022-11-02 20:45:13,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41147 states, 40629 states have (on average 4.016933717295528) internal successors, (163204), 41146 states have internal predecessors, (163204), 0 states have call successors, (0), 0 states 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 20:45:13,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41147 states to 41147 states and 163204 transitions. [2022-11-02 20:45:13,178 INFO L78 Accepts]: Start accepts. Automaton has 41147 states and 163204 transitions. Word has length 9 [2022-11-02 20:45:13,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:45:13,178 INFO L495 AbstractCegarLoop]: Abstraction has 41147 states and 163204 transitions. [2022-11-02 20:45:13,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states 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 20:45:13,179 INFO L276 IsEmpty]: Start isEmpty. Operand 41147 states and 163204 transitions. [2022-11-02 20:45:13,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-02 20:45:13,179 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:45:13,179 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-11-02 20:45:13,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-11-02 20:45:13,179 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2022-11-02 20:45:13,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:45:13,180 INFO L85 PathProgramCache]: Analyzing trace with hash -79747851, now seen corresponding path program 1 times [2022-11-02 20:45:13,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:45:13,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932207848] [2022-11-02 20:45:13,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:45:13,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:45:13,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:45:13,202 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:45:13,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:45:13,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932207848] [2022-11-02 20:45:13,203 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932207848] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:45:13,203 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:45:13,203 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:45:13,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876754246] [2022-11-02 20:45:13,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:45:13,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:45:13,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:45:13,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:45:13,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:45:13,205 INFO L87 Difference]: Start difference. First operand 41147 states and 163204 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states 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 20:45:13,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:45:13,527 INFO L93 Difference]: Finished difference Result 40639 states and 160904 transitions. [2022-11-02 20:45:13,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:45:13,527 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 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 9 [2022-11-02 20:45:13,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:45:13,689 INFO L225 Difference]: With dead ends: 40639 [2022-11-02 20:45:13,689 INFO L226 Difference]: Without dead ends: 40639 [2022-11-02 20:45:13,689 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 20:45:13,690 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 16 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:45:13,690 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 4 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:45:14,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40639 states. [2022-11-02 20:45:15,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40639 to 40639. [2022-11-02 20:45:15,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40639 states, 40128 states have (on average 4.009768740031898) internal successors, (160904), 40638 states have internal predecessors, (160904), 0 states have call successors, (0), 0 states 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 20:45:16,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40639 states to 40639 states and 160904 transitions. [2022-11-02 20:45:16,192 INFO L78 Accepts]: Start accepts. Automaton has 40639 states and 160904 transitions. Word has length 9 [2022-11-02 20:45:16,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:45:16,192 INFO L495 AbstractCegarLoop]: Abstraction has 40639 states and 160904 transitions. [2022-11-02 20:45:16,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states 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 20:45:16,192 INFO L276 IsEmpty]: Start isEmpty. Operand 40639 states and 160904 transitions. [2022-11-02 20:45:16,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-02 20:45:16,193 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:45:16,193 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:45:16,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-11-02 20:45:16,193 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2022-11-02 20:45:16,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:45:16,194 INFO L85 PathProgramCache]: Analyzing trace with hash -1045559518, now seen corresponding path program 1 times [2022-11-02 20:45:16,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:45:16,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795929079] [2022-11-02 20:45:16,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:45:16,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:45:16,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:45:16,242 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:45:16,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:45:16,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795929079] [2022-11-02 20:45:16,243 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795929079] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:45:16,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1034666897] [2022-11-02 20:45:16,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:45:16,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:45:16,244 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da23da70-71c9-45a1-a198-a1841d2714ae/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:45:16,245 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da23da70-71c9-45a1-a198-a1841d2714ae/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:45:16,278 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da23da70-71c9-45a1-a198-a1841d2714ae/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-02 20:45:16,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:45:16,384 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 20:45:16,384 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:45:16,398 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:45:16,398 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:45:16,418 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:45:16,419 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1034666897] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:45:16,419 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:45:16,419 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-11-02 20:45:16,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472614946] [2022-11-02 20:45:16,419 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:45:16,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:45:16,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:45:16,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:45:16,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:45:16,421 INFO L87 Difference]: Start difference. First operand 40639 states and 160904 transitions. Second operand has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 6 states have internal predecessors, (24), 0 states have call successors, (0), 0 states 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 20:45:16,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:45:16,807 INFO L93 Difference]: Finished difference Result 40639 states and 160890 transitions. [2022-11-02 20:45:16,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 20:45:16,807 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 6 states have internal predecessors, (24), 0 states have call successors, (0), 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 11 [2022-11-02 20:45:16,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:45:16,995 INFO L225 Difference]: With dead ends: 40639 [2022-11-02 20:45:16,995 INFO L226 Difference]: Without dead ends: 40639 [2022-11-02 20:45:16,996 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 18 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 20:45:16,996 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 33 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:45:16,997 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 10 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:45:17,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40639 states. [2022-11-02 20:45:18,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40639 to 40639. [2022-11-02 20:45:18,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40639 states, 40128 states have (on average 4.00941985645933) internal successors, (160890), 40638 states have internal predecessors, (160890), 0 states have call successors, (0), 0 states 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 20:45:18,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40639 states to 40639 states and 160890 transitions. [2022-11-02 20:45:18,518 INFO L78 Accepts]: Start accepts. Automaton has 40639 states and 160890 transitions. Word has length 11 [2022-11-02 20:45:18,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:45:18,518 INFO L495 AbstractCegarLoop]: Abstraction has 40639 states and 160890 transitions. [2022-11-02 20:45:18,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 6 states have internal predecessors, (24), 0 states have call successors, (0), 0 states 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 20:45:18,519 INFO L276 IsEmpty]: Start isEmpty. Operand 40639 states and 160890 transitions. [2022-11-02 20:45:18,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-02 20:45:18,520 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:45:18,520 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:45:18,553 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da23da70-71c9-45a1-a198-a1841d2714ae/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-11-02 20:45:18,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da23da70-71c9-45a1-a198-a1841d2714ae/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2022-11-02 20:45:18,733 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2022-11-02 20:45:18,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:45:18,733 INFO L85 PathProgramCache]: Analyzing trace with hash 587578111, now seen corresponding path program 1 times [2022-11-02 20:45:18,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:45:18,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984918391] [2022-11-02 20:45:18,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:45:18,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:45:18,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:45:18,774 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-02 20:45:18,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:45:18,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984918391] [2022-11-02 20:45:18,775 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984918391] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:45:18,775 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:45:18,775 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:45:18,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858744865] [2022-11-02 20:45:18,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:45:18,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:45:18,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:45:18,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:45:18,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:45:18,777 INFO L87 Difference]: Start difference. First operand 40639 states and 160890 transitions. Second operand has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 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 20:45:19,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:45:19,686 INFO L93 Difference]: Finished difference Result 40575 states and 159738 transitions. [2022-11-02 20:45:19,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:45:19,686 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 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 23 [2022-11-02 20:45:19,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:45:19,954 INFO L225 Difference]: With dead ends: 40575 [2022-11-02 20:45:19,954 INFO L226 Difference]: Without dead ends: 40575 [2022-11-02 20:45:19,954 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 20:45:19,955 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 15 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:45:19,955 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 6 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:45:20,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40575 states. [2022-11-02 20:45:21,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40575 to 40575. [2022-11-02 20:45:21,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40575 states, 40080 states have (on average 3.9854790419161676) internal successors, (159738), 40574 states have internal predecessors, (159738), 0 states have call successors, (0), 0 states 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 20:45:21,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40575 states to 40575 states and 159738 transitions. [2022-11-02 20:45:21,591 INFO L78 Accepts]: Start accepts. Automaton has 40575 states and 159738 transitions. Word has length 23 [2022-11-02 20:45:21,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:45:21,591 INFO L495 AbstractCegarLoop]: Abstraction has 40575 states and 159738 transitions. [2022-11-02 20:45:21,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 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 20:45:21,591 INFO L276 IsEmpty]: Start isEmpty. Operand 40575 states and 159738 transitions. [2022-11-02 20:45:21,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-02 20:45:21,594 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:45:21,594 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:45:21,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-11-02 20:45:21,594 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2022-11-02 20:45:21,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:45:21,595 INFO L85 PathProgramCache]: Analyzing trace with hash -424534175, now seen corresponding path program 1 times [2022-11-02 20:45:21,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:45:21,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670192013] [2022-11-02 20:45:21,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:45:21,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:45:21,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:45:21,649 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-11-02 20:45:21,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:45:21,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670192013] [2022-11-02 20:45:21,650 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670192013] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:45:21,650 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:45:21,650 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:45:21,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708331381] [2022-11-02 20:45:21,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:45:21,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:45:21,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:45:21,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:45:21,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:45:21,652 INFO L87 Difference]: Start difference. First operand 40575 states and 159738 transitions. Second operand has 3 states, 2 states have (on average 9.5) internal successors, (19), 3 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 20:45:22,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:45:22,096 INFO L93 Difference]: Finished difference Result 35294 states and 141569 transitions. [2022-11-02 20:45:22,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:45:22,097 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 9.5) internal successors, (19), 3 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 28 [2022-11-02 20:45:22,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:45:22,290 INFO L225 Difference]: With dead ends: 35294 [2022-11-02 20:45:22,290 INFO L226 Difference]: Without dead ends: 35294 [2022-11-02 20:45:22,290 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 20:45:22,291 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 16 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:45:22,291 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 5 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:45:22,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35294 states. [2022-11-02 20:45:23,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35294 to 35294. [2022-11-02 20:45:23,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35294 states, 35046 states have (on average 4.039519488672031) internal successors, (141569), 35293 states have internal predecessors, (141569), 0 states have call successors, (0), 0 states 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 20:45:23,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35294 states to 35294 states and 141569 transitions. [2022-11-02 20:45:23,866 INFO L78 Accepts]: Start accepts. Automaton has 35294 states and 141569 transitions. Word has length 28 [2022-11-02 20:45:23,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:45:23,866 INFO L495 AbstractCegarLoop]: Abstraction has 35294 states and 141569 transitions. [2022-11-02 20:45:23,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 9.5) internal successors, (19), 3 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 20:45:23,866 INFO L276 IsEmpty]: Start isEmpty. Operand 35294 states and 141569 transitions. [2022-11-02 20:45:23,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-02 20:45:23,868 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:45:23,869 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:45:23,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-11-02 20:45:23,869 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2022-11-02 20:45:23,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:45:23,869 INFO L85 PathProgramCache]: Analyzing trace with hash -424534152, now seen corresponding path program 1 times [2022-11-02 20:45:23,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:45:23,870 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036267634] [2022-11-02 20:45:23,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:45:23,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:45:23,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:45:23,978 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-02 20:45:23,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:45:23,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036267634] [2022-11-02 20:45:23,979 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036267634] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:45:23,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [883666211] [2022-11-02 20:45:23,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:45:23,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:45:23,980 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da23da70-71c9-45a1-a198-a1841d2714ae/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:45:23,981 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da23da70-71c9-45a1-a198-a1841d2714ae/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:45:24,010 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da23da70-71c9-45a1-a198-a1841d2714ae/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-02 20:45:24,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:45:24,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 20:45:24,134 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:45:24,172 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-02 20:45:24,173 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:45:24,256 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-02 20:45:24,256 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [883666211] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:45:24,256 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:45:24,256 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2022-11-02 20:45:24,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809233306] [2022-11-02 20:45:24,257 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:45:24,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-02 20:45:24,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:45:24,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-02 20:45:24,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-11-02 20:45:24,258 INFO L87 Difference]: Start difference. First operand 35294 states and 141569 transitions. Second operand has 13 states, 13 states have (on average 4.0) internal successors, (52), 12 states have internal predecessors, (52), 0 states have call successors, (0), 0 states 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 20:45:24,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:45:24,411 INFO L93 Difference]: Finished difference Result 2299 states and 10239 transitions. [2022-11-02 20:45:24,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 20:45:24,412 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.0) internal successors, (52), 12 states have internal predecessors, (52), 0 states have call successors, (0), 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 28 [2022-11-02 20:45:24,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:45:24,421 INFO L225 Difference]: With dead ends: 2299 [2022-11-02 20:45:24,422 INFO L226 Difference]: Without dead ends: 2299 [2022-11-02 20:45:24,423 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-11-02 20:45:24,433 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 145 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:45:24,433 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 12 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:45:24,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2299 states. [2022-11-02 20:45:24,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2299 to 2299. [2022-11-02 20:45:24,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2299 states, 2298 states have (on average 4.455613577023499) internal successors, (10239), 2298 states have internal predecessors, (10239), 0 states have call successors, (0), 0 states 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 20:45:24,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2299 states to 2299 states and 10239 transitions. [2022-11-02 20:45:24,484 INFO L78 Accepts]: Start accepts. Automaton has 2299 states and 10239 transitions. Word has length 28 [2022-11-02 20:45:24,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:45:24,485 INFO L495 AbstractCegarLoop]: Abstraction has 2299 states and 10239 transitions. [2022-11-02 20:45:24,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.0) internal successors, (52), 12 states have internal predecessors, (52), 0 states have call successors, (0), 0 states 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 20:45:24,485 INFO L276 IsEmpty]: Start isEmpty. Operand 2299 states and 10239 transitions. [2022-11-02 20:45:24,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-02 20:45:24,491 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:45:24,491 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:45:24,514 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da23da70-71c9-45a1-a198-a1841d2714ae/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-02 20:45:24,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da23da70-71c9-45a1-a198-a1841d2714ae/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:45:24,695 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2022-11-02 20:45:24,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:45:24,696 INFO L85 PathProgramCache]: Analyzing trace with hash 493436908, now seen corresponding path program 1 times [2022-11-02 20:45:24,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:45:24,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516806302] [2022-11-02 20:45:24,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:45:24,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:45:24,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:45:24,714 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:45:24,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:45:24,730 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:45:24,731 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-02 20:45:24,731 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2022-11-02 20:45:24,731 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 5 remaining) [2022-11-02 20:45:24,731 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 5 remaining) [2022-11-02 20:45:24,731 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 5 remaining) [2022-11-02 20:45:24,732 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 5 remaining) [2022-11-02 20:45:24,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-11-02 20:45:24,732 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:45:24,733 WARN L233 ceAbstractionStarter]: 8 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-02 20:45:24,733 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 9 thread instances. [2022-11-02 20:45:24,753 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2022-11-02 20:45:24,755 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-02 20:45:24,755 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 129 places, 122 transitions, 388 flow [2022-11-02 20:45:24,755 INFO L112 LiptonReduction]: Starting Lipton reduction on Petri net that has 129 places, 122 transitions, 388 flow [2022-11-02 20:45:24,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 129 places, 122 transitions, 388 flow [2022-11-02 20:45:26,615 INFO L130 PetriNetUnfolder]: 2334/11778 cut-off events. [2022-11-02 20:45:26,616 INFO L131 PetriNetUnfolder]: For 2460/2460 co-relation queries the response was YES. [2022-11-02 20:45:26,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14155 conditions, 11778 events. 2334/11778 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 115931 event pairs, 1291 based on Foata normal form. 0/9684 useless extension candidates. Maximal degree in co-relation 6938. Up to 2304 conditions per place. [2022-11-02 20:45:26,950 INFO L118 LiptonReduction]: Number of co-enabled transitions 6390 [2022-11-02 20:45:29,255 INFO L133 LiptonReduction]: Checked pairs total: 9886 [2022-11-02 20:45:29,255 INFO L135 LiptonReduction]: Total number of compositions: 90 [2022-11-02 20:45:29,256 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 51 places, 41 transitions, 226 flow [2022-11-02 20:45:33,779 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 142379 states, 140826 states have (on average 4.354799539857697) internal successors, (613269), 142378 states have internal predecessors, (613269), 0 states have call successors, (0), 0 states 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 20:45:33,780 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:45:33,780 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;@2a107e29, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:45:33,781 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-11-02 20:45:33,960 INFO L276 IsEmpty]: Start isEmpty. Operand has 142379 states, 140826 states have (on average 4.354799539857697) internal successors, (613269), 142378 states have internal predecessors, (613269), 0 states have call successors, (0), 0 states 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 20:45:33,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-02 20:45:33,961 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:45:33,961 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-02 20:45:33,961 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2022-11-02 20:45:33,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:45:33,962 INFO L85 PathProgramCache]: Analyzing trace with hash 1621466010, now seen corresponding path program 1 times [2022-11-02 20:45:33,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:45:33,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113358207] [2022-11-02 20:45:33,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:45:33,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:45:33,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:45:33,988 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 20:45:33,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:45:33,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113358207] [2022-11-02 20:45:33,988 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113358207] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:45:33,989 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:45:33,989 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-02 20:45:33,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079459878] [2022-11-02 20:45:33,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:45:33,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:45:33,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:45:33,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:45:33,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:45:34,220 INFO L87 Difference]: Start difference. First operand has 142379 states, 140826 states have (on average 4.354799539857697) internal successors, (613269), 142378 states have internal predecessors, (613269), 0 states have call successors, (0), 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 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states 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 20:45:37,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:45:37,114 INFO L93 Difference]: Finished difference Result 142375 states and 613262 transitions. [2022-11-02 20:45:37,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:45:37,114 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 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 5 [2022-11-02 20:45:37,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:45:38,040 INFO L225 Difference]: With dead ends: 142375 [2022-11-02 20:45:38,041 INFO L226 Difference]: Without dead ends: 122691 [2022-11-02 20:45:38,041 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 20:45:38,041 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 1 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:45:38,042 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 6 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:45:38,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122691 states.