./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_08-cond_racefree.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_1bb54d34-2e03-4cf5-a258-42667fee51ad/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb54d34-2e03-4cf5-a258-42667fee51ad/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_1bb54d34-2e03-4cf5-a258-42667fee51ad/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb54d34-2e03-4cf5-a258-42667fee51ad/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_08-cond_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb54d34-2e03-4cf5-a258-42667fee51ad/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_1bb54d34-2e03-4cf5-a258-42667fee51ad/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 b4439281d7e12bca3fd2bd39ebda4196e341f38fedf1c370a96bdabb4944cfe7 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-02 21:09:55,906 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 21:09:55,914 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 21:09:55,967 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 21:09:55,968 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 21:09:55,973 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 21:09:55,976 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 21:09:55,980 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 21:09:55,983 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 21:09:55,989 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 21:09:55,990 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 21:09:55,993 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 21:09:55,993 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 21:09:55,996 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 21:09:55,998 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 21:09:55,999 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 21:09:56,000 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 21:09:56,001 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 21:09:56,003 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 21:09:56,009 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 21:09:56,011 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 21:09:56,016 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 21:09:56,020 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 21:09:56,021 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 21:09:56,028 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 21:09:56,033 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 21:09:56,034 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 21:09:56,035 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 21:09:56,036 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 21:09:56,038 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 21:09:56,038 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 21:09:56,039 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 21:09:56,043 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 21:09:56,045 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 21:09:56,046 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 21:09:56,047 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 21:09:56,047 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 21:09:56,048 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 21:09:56,048 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 21:09:56,049 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 21:09:56,050 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 21:09:56,051 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb54d34-2e03-4cf5-a258-42667fee51ad/bin/uautomizer-Dbtcem3rbc/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-02 21:09:56,099 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 21:09:56,100 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 21:09:56,101 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 21:09:56,101 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 21:09:56,102 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 21:09:56,102 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 21:09:56,103 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 21:09:56,104 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 21:09:56,104 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 21:09:56,104 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 21:09:56,106 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 21:09:56,106 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-02 21:09:56,106 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 21:09:56,106 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 21:09:56,107 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 21:09:56,107 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 21:09:56,107 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 21:09:56,108 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 21:09:56,108 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-02 21:09:56,108 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 21:09:56,108 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 21:09:56,109 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 21:09:56,109 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 21:09:56,109 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 21:09:56,109 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 21:09:56,110 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 21:09:56,110 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:09:56,110 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 21:09:56,111 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 21:09:56,111 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 21:09:56,111 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 21:09:56,111 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 21:09:56,112 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 21:09:56,112 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_1bb54d34-2e03-4cf5-a258-42667fee51ad/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb54d34-2e03-4cf5-a258-42667fee51ad/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b4439281d7e12bca3fd2bd39ebda4196e341f38fedf1c370a96bdabb4944cfe7 [2022-11-02 21:09:56,486 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 21:09:56,519 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 21:09:56,522 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 21:09:56,524 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 21:09:56,525 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 21:09:56,526 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb54d34-2e03-4cf5-a258-42667fee51ad/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/goblint-regression/28-race_reach_08-cond_racefree.i [2022-11-02 21:09:56,609 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb54d34-2e03-4cf5-a258-42667fee51ad/bin/uautomizer-Dbtcem3rbc/data/aa9208eff/2817ae513b2840ba8450ba244dfd5da9/FLAG1216fab29 [2022-11-02 21:09:57,261 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 21:09:57,271 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb54d34-2e03-4cf5-a258-42667fee51ad/sv-benchmarks/c/goblint-regression/28-race_reach_08-cond_racefree.i [2022-11-02 21:09:57,295 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb54d34-2e03-4cf5-a258-42667fee51ad/bin/uautomizer-Dbtcem3rbc/data/aa9208eff/2817ae513b2840ba8450ba244dfd5da9/FLAG1216fab29 [2022-11-02 21:09:57,484 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb54d34-2e03-4cf5-a258-42667fee51ad/bin/uautomizer-Dbtcem3rbc/data/aa9208eff/2817ae513b2840ba8450ba244dfd5da9 [2022-11-02 21:09:57,487 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 21:09:57,491 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 21:09:57,495 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 21:09:57,495 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 21:09:57,499 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 21:09:57,500 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:09:57" (1/1) ... [2022-11-02 21:09:57,502 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47a5f22d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:09:57, skipping insertion in model container [2022-11-02 21:09:57,502 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:09:57" (1/1) ... [2022-11-02 21:09:57,510 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 21:09:57,580 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 21:09:58,247 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_1bb54d34-2e03-4cf5-a258-42667fee51ad/sv-benchmarks/c/goblint-regression/28-race_reach_08-cond_racefree.i[41322,41335] [2022-11-02 21:09:58,269 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:09:58,283 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 21:09:58,322 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_1bb54d34-2e03-4cf5-a258-42667fee51ad/sv-benchmarks/c/goblint-regression/28-race_reach_08-cond_racefree.i[41322,41335] [2022-11-02 21:09:58,332 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:09:58,394 INFO L208 MainTranslator]: Completed translation [2022-11-02 21:09:58,394 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:09:58 WrapperNode [2022-11-02 21:09:58,394 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 21:09:58,396 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 21:09:58,396 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 21:09:58,396 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 21:09:58,406 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:09:58" (1/1) ... [2022-11-02 21:09:58,425 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:09:58" (1/1) ... [2022-11-02 21:09:58,452 INFO L138 Inliner]: procedures = 270, calls = 33, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 96 [2022-11-02 21:09:58,453 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 21:09:58,453 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 21:09:58,454 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 21:09:58,454 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 21:09:58,465 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:09:58" (1/1) ... [2022-11-02 21:09:58,465 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:09:58" (1/1) ... [2022-11-02 21:09:58,478 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:09:58" (1/1) ... [2022-11-02 21:09:58,494 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:09:58" (1/1) ... [2022-11-02 21:09:58,502 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:09:58" (1/1) ... [2022-11-02 21:09:58,523 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:09:58" (1/1) ... [2022-11-02 21:09:58,526 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:09:58" (1/1) ... [2022-11-02 21:09:58,527 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:09:58" (1/1) ... [2022-11-02 21:09:58,530 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 21:09:58,531 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 21:09:58,531 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 21:09:58,531 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 21:09:58,533 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:09:58" (1/1) ... [2022-11-02 21:09:58,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:09:58,561 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb54d34-2e03-4cf5-a258-42667fee51ad/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:09:58,576 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb54d34-2e03-4cf5-a258-42667fee51ad/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 21:09:58,593 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb54d34-2e03-4cf5-a258-42667fee51ad/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 21:09:58,628 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 21:09:58,628 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 21:09:58,628 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-02 21:09:58,629 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-02 21:09:58,629 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-02 21:09:58,629 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 21:09:58,629 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-02 21:09:58,629 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-02 21:09:58,630 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 21:09:58,630 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 21:09:58,630 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 21:09:58,632 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-02 21:09:58,884 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 21:09:58,887 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 21:09:59,308 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 21:09:59,320 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 21:09:59,322 INFO L300 CfgBuilder]: Removed 10 assume(true) statements. [2022-11-02 21:09:59,325 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:09:59 BoogieIcfgContainer [2022-11-02 21:09:59,327 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 21:09:59,329 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 21:09:59,330 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 21:09:59,334 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 21:09:59,334 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 09:09:57" (1/3) ... [2022-11-02 21:09:59,335 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4528b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:09:59, skipping insertion in model container [2022-11-02 21:09:59,335 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:09:58" (2/3) ... [2022-11-02 21:09:59,336 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4528b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:09:59, skipping insertion in model container [2022-11-02 21:09:59,336 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:09:59" (3/3) ... [2022-11-02 21:09:59,338 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_08-cond_racefree.i [2022-11-02 21:09:59,353 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-02 21:09:59,366 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 21:09:59,367 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-11-02 21:09:59,367 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-02 21:09:59,485 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-11-02 21:09:59,552 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-02 21:09:59,570 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 132 places, 144 transitions, 296 flow [2022-11-02 21:09:59,573 INFO L112 LiptonReduction]: Starting Lipton reduction on Petri net that has 132 places, 144 transitions, 296 flow [2022-11-02 21:09:59,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 132 places, 144 transitions, 296 flow [2022-11-02 21:09:59,713 INFO L130 PetriNetUnfolder]: 23/188 cut-off events. [2022-11-02 21:09:59,714 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-02 21:09:59,722 INFO L83 FinitePrefix]: Finished finitePrefix Result has 194 conditions, 188 events. 23/188 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 427 event pairs, 0 based on Foata normal form. 0/154 useless extension candidates. Maximal degree in co-relation 89. Up to 6 conditions per place. [2022-11-02 21:09:59,729 INFO L118 LiptonReduction]: Number of co-enabled transitions 3888 [2022-11-02 21:10:06,649 INFO L133 LiptonReduction]: Checked pairs total: 5469 [2022-11-02 21:10:06,650 INFO L135 LiptonReduction]: Total number of compositions: 142 [2022-11-02 21:10:06,667 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 33 places, 40 transitions, 88 flow [2022-11-02 21:10:06,725 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 194 states, 167 states have (on average 2.8323353293413174) internal successors, (473), 193 states have internal predecessors, (473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:06,757 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 21:10:06,768 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;@58a3d88c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 21:10:06,768 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2022-11-02 21:10:06,774 INFO L276 IsEmpty]: Start isEmpty. Operand has 194 states, 167 states have (on average 2.8323353293413174) internal successors, (473), 193 states have internal predecessors, (473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:06,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-02 21:10:06,781 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:10:06,782 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-02 21:10:06,782 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-02 21:10:06,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:10:06,793 INFO L85 PathProgramCache]: Analyzing trace with hash 17250948, now seen corresponding path program 1 times [2022-11-02 21:10:06,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:10:06,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416045925] [2022-11-02 21:10:06,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:10:06,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:10:06,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:07,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:10:07,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:10:07,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416045925] [2022-11-02 21:10:07,223 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416045925] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:10:07,224 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:10:07,224 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-02 21:10:07,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227867973] [2022-11-02 21:10:07,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:10:07,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:10:07,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:10:07,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:10:07,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:10:07,273 INFO L87 Difference]: Start difference. First operand has 194 states, 167 states have (on average 2.8323353293413174) internal successors, (473), 193 states have internal predecessors, (473), 0 states have call successors, (0), 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 21:10:07,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:10:07,421 INFO L93 Difference]: Finished difference Result 162 states and 305 transitions. [2022-11-02 21:10:07,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:10:07,424 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 21:10:07,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:10:07,437 INFO L225 Difference]: With dead ends: 162 [2022-11-02 21:10:07,437 INFO L226 Difference]: Without dead ends: 156 [2022-11-02 21:10:07,439 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:10:07,443 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 13 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:10:07,444 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 4 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:10:07,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2022-11-02 21:10:07,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 156. [2022-11-02 21:10:07,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 141 states have (on average 2.0921985815602837) internal successors, (295), 155 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:07,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 295 transitions. [2022-11-02 21:10:07,520 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 295 transitions. Word has length 4 [2022-11-02 21:10:07,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:10:07,521 INFO L495 AbstractCegarLoop]: Abstraction has 156 states and 295 transitions. [2022-11-02 21:10:07,521 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 21:10:07,521 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 295 transitions. [2022-11-02 21:10:07,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-02 21:10:07,522 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:10:07,522 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-02 21:10:07,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 21:10:07,523 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-02 21:10:07,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:10:07,524 INFO L85 PathProgramCache]: Analyzing trace with hash -601677417, now seen corresponding path program 1 times [2022-11-02 21:10:07,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:10:07,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814691538] [2022-11-02 21:10:07,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:10:07,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:10:07,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:07,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:10:07,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:10:07,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814691538] [2022-11-02 21:10:07,657 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814691538] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:10:07,658 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:10:07,658 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-02 21:10:07,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364763338] [2022-11-02 21:10:07,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:10:07,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:10:07,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:10:07,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:10:07,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:10:07,661 INFO L87 Difference]: Start difference. First operand 156 states and 295 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:07,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:10:07,727 INFO L93 Difference]: Finished difference Result 134 states and 251 transitions. [2022-11-02 21:10:07,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:10:07,728 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-02 21:10:07,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:10:07,730 INFO L225 Difference]: With dead ends: 134 [2022-11-02 21:10:07,730 INFO L226 Difference]: Without dead ends: 134 [2022-11-02 21:10:07,731 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:10:07,732 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 11 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:10:07,733 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 3 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:10:07,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2022-11-02 21:10:07,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2022-11-02 21:10:07,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 125 states have (on average 2.008) internal successors, (251), 133 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:07,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 251 transitions. [2022-11-02 21:10:07,743 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 251 transitions. Word has length 6 [2022-11-02 21:10:07,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:10:07,743 INFO L495 AbstractCegarLoop]: Abstraction has 134 states and 251 transitions. [2022-11-02 21:10:07,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:07,744 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 251 transitions. [2022-11-02 21:10:07,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-02 21:10:07,745 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:10:07,745 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2022-11-02 21:10:07,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 21:10:07,746 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-02 21:10:07,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:10:07,747 INFO L85 PathProgramCache]: Analyzing trace with hash -601654293, now seen corresponding path program 1 times [2022-11-02 21:10:07,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:10:07,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590984934] [2022-11-02 21:10:07,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:10:07,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:10:07,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 21:10:07,783 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 21:10:07,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 21:10:07,867 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 21:10:07,869 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-02 21:10:07,871 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2022-11-02 21:10:07,873 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2022-11-02 21:10:07,874 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2022-11-02 21:10:07,874 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 13 remaining) [2022-11-02 21:10:07,874 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 13 remaining) [2022-11-02 21:10:07,875 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 13 remaining) [2022-11-02 21:10:07,875 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 13 remaining) [2022-11-02 21:10:07,876 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 13 remaining) [2022-11-02 21:10:07,876 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 13 remaining) [2022-11-02 21:10:07,876 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 13 remaining) [2022-11-02 21:10:07,877 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 13 remaining) [2022-11-02 21:10:07,877 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2022-11-02 21:10:07,877 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2022-11-02 21:10:07,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 21:10:07,880 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-11-02 21:10:07,884 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-02 21:10:07,885 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-02 21:10:07,931 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-02 21:10:07,940 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-02 21:10:07,941 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 165 places, 182 transitions, 382 flow [2022-11-02 21:10:07,943 INFO L112 LiptonReduction]: Starting Lipton reduction on Petri net that has 165 places, 182 transitions, 382 flow [2022-11-02 21:10:07,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 165 places, 182 transitions, 382 flow [2022-11-02 21:10:08,057 INFO L130 PetriNetUnfolder]: 40/307 cut-off events. [2022-11-02 21:10:08,057 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-02 21:10:08,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 321 conditions, 307 events. 40/307 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 891 event pairs, 0 based on Foata normal form. 0/245 useless extension candidates. Maximal degree in co-relation 190. Up to 9 conditions per place. [2022-11-02 21:10:08,078 INFO L118 LiptonReduction]: Number of co-enabled transitions 11736 [2022-11-02 21:10:13,636 INFO L133 LiptonReduction]: Checked pairs total: 24305 [2022-11-02 21:10:13,636 INFO L135 LiptonReduction]: Total number of compositions: 168 [2022-11-02 21:10:13,637 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 55 places, 67 transitions, 152 flow [2022-11-02 21:10:13,789 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 3981 states, 3814 states have (on average 3.7949659150498163) internal successors, (14474), 3980 states have internal predecessors, (14474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:13,790 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 21:10:13,791 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;@58a3d88c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 21:10:13,791 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2022-11-02 21:10:13,804 INFO L276 IsEmpty]: Start isEmpty. Operand has 3981 states, 3814 states have (on average 3.7949659150498163) internal successors, (14474), 3980 states have internal predecessors, (14474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:13,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-02 21:10:13,805 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:10:13,805 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-02 21:10:13,805 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-02 21:10:13,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:10:13,806 INFO L85 PathProgramCache]: Analyzing trace with hash 905611237, now seen corresponding path program 1 times [2022-11-02 21:10:13,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:10:13,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329498961] [2022-11-02 21:10:13,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:10:13,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:10:13,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:13,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:10:13,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:10:13,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329498961] [2022-11-02 21:10:13,886 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329498961] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:10:13,886 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:10:13,886 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-02 21:10:13,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157717250] [2022-11-02 21:10:13,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:10:13,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:10:13,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:10:13,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:10:13,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:10:13,900 INFO L87 Difference]: Start difference. First operand has 3981 states, 3814 states have (on average 3.7949659150498163) internal successors, (14474), 3980 states have internal predecessors, (14474), 0 states have call successors, (0), 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 21:10:14,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:10:14,088 INFO L93 Difference]: Finished difference Result 3945 states and 11028 transitions. [2022-11-02 21:10:14,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:10:14,089 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 21:10:14,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:10:14,120 INFO L225 Difference]: With dead ends: 3945 [2022-11-02 21:10:14,120 INFO L226 Difference]: Without dead ends: 3919 [2022-11-02 21:10:14,120 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:10:14,121 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 15 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:10:14,122 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 16 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:10:14,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3919 states. [2022-11-02 21:10:14,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3919 to 3919. [2022-11-02 21:10:14,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3919 states, 3766 states have (on average 2.9107806691449816) internal successors, (10962), 3918 states have internal predecessors, (10962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:14,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3919 states to 3919 states and 10962 transitions. [2022-11-02 21:10:14,288 INFO L78 Accepts]: Start accepts. Automaton has 3919 states and 10962 transitions. Word has length 5 [2022-11-02 21:10:14,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:10:14,289 INFO L495 AbstractCegarLoop]: Abstraction has 3919 states and 10962 transitions. [2022-11-02 21:10:14,289 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 21:10:14,289 INFO L276 IsEmpty]: Start isEmpty. Operand 3919 states and 10962 transitions. [2022-11-02 21:10:14,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-02 21:10:14,290 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:10:14,290 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:10:14,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-02 21:10:14,291 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-02 21:10:14,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:10:14,291 INFO L85 PathProgramCache]: Analyzing trace with hash -1578840851, now seen corresponding path program 1 times [2022-11-02 21:10:14,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:10:14,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242539509] [2022-11-02 21:10:14,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:10:14,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:10:14,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:14,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:10:14,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:10:14,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242539509] [2022-11-02 21:10:14,412 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242539509] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:10:14,412 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:10:14,412 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-02 21:10:14,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417537245] [2022-11-02 21:10:14,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:10:14,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:10:14,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:10:14,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:10:14,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:10:14,415 INFO L87 Difference]: Start difference. First operand 3919 states and 10962 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:14,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:10:14,641 INFO L93 Difference]: Finished difference Result 4824 states and 12505 transitions. [2022-11-02 21:10:14,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:10:14,642 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-02 21:10:14,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:10:14,674 INFO L225 Difference]: With dead ends: 4824 [2022-11-02 21:10:14,674 INFO L226 Difference]: Without dead ends: 4800 [2022-11-02 21:10:14,675 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:10:14,676 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 35 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:10:14,678 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 19 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:10:14,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4800 states. [2022-11-02 21:10:14,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4800 to 4322. [2022-11-02 21:10:14,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4322 states, 4189 states have (on average 2.789209835282884) internal successors, (11684), 4321 states have internal predecessors, (11684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:14,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4322 states to 4322 states and 11684 transitions. [2022-11-02 21:10:14,864 INFO L78 Accepts]: Start accepts. Automaton has 4322 states and 11684 transitions. Word has length 7 [2022-11-02 21:10:14,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:10:14,865 INFO L495 AbstractCegarLoop]: Abstraction has 4322 states and 11684 transitions. [2022-11-02 21:10:14,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:14,866 INFO L276 IsEmpty]: Start isEmpty. Operand 4322 states and 11684 transitions. [2022-11-02 21:10:14,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-02 21:10:14,868 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:10:14,868 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-11-02 21:10:14,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-02 21:10:14,868 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-02 21:10:14,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:10:14,870 INFO L85 PathProgramCache]: Analyzing trace with hash 655868783, now seen corresponding path program 1 times [2022-11-02 21:10:14,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:10:14,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268938358] [2022-11-02 21:10:14,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:10:14,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:10:14,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:14,973 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 21:10:14,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:10:14,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268938358] [2022-11-02 21:10:14,974 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268938358] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:10:14,974 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:10:14,974 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 21:10:14,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717768692] [2022-11-02 21:10:14,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:10:14,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:10:14,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:10:14,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:10:14,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:10:14,977 INFO L87 Difference]: Start difference. First operand 4322 states and 11684 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 21:10:15,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:10:15,108 INFO L93 Difference]: Finished difference Result 4090 states and 11020 transitions. [2022-11-02 21:10:15,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:10:15,109 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 21:10:15,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:10:15,134 INFO L225 Difference]: With dead ends: 4090 [2022-11-02 21:10:15,134 INFO L226 Difference]: Without dead ends: 4090 [2022-11-02 21:10:15,134 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:10:15,137 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 33 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:10:15,138 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 14 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:10:15,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4090 states. [2022-11-02 21:10:15,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4090 to 4090. [2022-11-02 21:10:15,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4090 states, 3978 states have (on average 2.7702362996480643) internal successors, (11020), 4089 states have internal predecessors, (11020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:15,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4090 states to 4090 states and 11020 transitions. [2022-11-02 21:10:15,277 INFO L78 Accepts]: Start accepts. Automaton has 4090 states and 11020 transitions. Word has length 9 [2022-11-02 21:10:15,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:10:15,278 INFO L495 AbstractCegarLoop]: Abstraction has 4090 states and 11020 transitions. [2022-11-02 21:10:15,278 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 21:10:15,278 INFO L276 IsEmpty]: Start isEmpty. Operand 4090 states and 11020 transitions. [2022-11-02 21:10:15,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-02 21:10:15,281 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:10:15,281 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-11-02 21:10:15,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-02 21:10:15,281 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-02 21:10:15,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:10:15,282 INFO L85 PathProgramCache]: Analyzing trace with hash 655868784, now seen corresponding path program 1 times [2022-11-02 21:10:15,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:10:15,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971915444] [2022-11-02 21:10:15,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:10:15,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:10:15,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:15,390 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:10:15,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:10:15,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971915444] [2022-11-02 21:10:15,390 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971915444] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:10:15,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [886026766] [2022-11-02 21:10:15,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:10:15,391 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:10:15,391 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb54d34-2e03-4cf5-a258-42667fee51ad/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:10:15,393 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb54d34-2e03-4cf5-a258-42667fee51ad/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:10:15,422 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb54d34-2e03-4cf5-a258-42667fee51ad/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-02 21:10:15,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:15,555 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 21:10:15,557 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:10:15,611 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:10:15,611 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:10:15,612 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [886026766] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:10:15,612 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 21:10:15,612 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2022-11-02 21:10:15,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132094389] [2022-11-02 21:10:15,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:10:15,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:10:15,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:10:15,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:10:15,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:10:15,614 INFO L87 Difference]: Start difference. First operand 4090 states and 11020 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 21:10:15,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:10:15,733 INFO L93 Difference]: Finished difference Result 3858 states and 10356 transitions. [2022-11-02 21:10:15,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 21:10:15,734 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 21:10:15,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:10:15,759 INFO L225 Difference]: With dead ends: 3858 [2022-11-02 21:10:15,760 INFO L226 Difference]: Without dead ends: 3858 [2022-11-02 21:10:15,760 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 21:10:15,761 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 91 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:10:15,761 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 14 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:10:15,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3858 states. [2022-11-02 21:10:15,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3858 to 3858. [2022-11-02 21:10:15,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3858 states, 3767 states have (on average 2.7491372444916378) internal successors, (10356), 3857 states have internal predecessors, (10356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:15,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3858 states to 3858 states and 10356 transitions. [2022-11-02 21:10:15,888 INFO L78 Accepts]: Start accepts. Automaton has 3858 states and 10356 transitions. Word has length 9 [2022-11-02 21:10:15,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:10:15,888 INFO L495 AbstractCegarLoop]: Abstraction has 3858 states and 10356 transitions. [2022-11-02 21:10:15,889 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 21:10:15,889 INFO L276 IsEmpty]: Start isEmpty. Operand 3858 states and 10356 transitions. [2022-11-02 21:10:15,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-02 21:10:15,890 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:10:15,890 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:10:15,931 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb54d34-2e03-4cf5-a258-42667fee51ad/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-02 21:10:16,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb54d34-2e03-4cf5-a258-42667fee51ad/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:10:16,111 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-02 21:10:16,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:10:16,112 INFO L85 PathProgramCache]: Analyzing trace with hash 1553713336, now seen corresponding path program 1 times [2022-11-02 21:10:16,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:10:16,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558168145] [2022-11-02 21:10:16,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:10:16,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:10:16,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:16,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:10:16,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:10:16,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558168145] [2022-11-02 21:10:16,198 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558168145] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:10:16,198 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:10:16,198 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:10:16,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146086307] [2022-11-02 21:10:16,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:10:16,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:10:16,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:10:16,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:10:16,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:10:16,200 INFO L87 Difference]: Start difference. First operand 3858 states and 10356 transitions. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:16,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:10:16,610 INFO L93 Difference]: Finished difference Result 4758 states and 12167 transitions. [2022-11-02 21:10:16,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 21:10:16,611 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 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 21:10:16,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:10:16,631 INFO L225 Difference]: With dead ends: 4758 [2022-11-02 21:10:16,631 INFO L226 Difference]: Without dead ends: 4758 [2022-11-02 21:10:16,632 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:10:16,632 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 112 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 404 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 413 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 404 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 21:10:16,633 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 82 Invalid, 413 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 404 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 21:10:16,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4758 states. [2022-11-02 21:10:16,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4758 to 4152. [2022-11-02 21:10:16,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4152 states, 4058 states have (on average 2.753080335140463) internal successors, (11172), 4151 states have internal predecessors, (11172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:16,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4152 states to 4152 states and 11172 transitions. [2022-11-02 21:10:16,781 INFO L78 Accepts]: Start accepts. Automaton has 4152 states and 11172 transitions. Word has length 11 [2022-11-02 21:10:16,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:10:16,782 INFO L495 AbstractCegarLoop]: Abstraction has 4152 states and 11172 transitions. [2022-11-02 21:10:16,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:16,782 INFO L276 IsEmpty]: Start isEmpty. Operand 4152 states and 11172 transitions. [2022-11-02 21:10:16,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-02 21:10:16,783 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:10:16,783 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:10:16,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-02 21:10:16,784 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-02 21:10:16,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:10:16,784 INFO L85 PathProgramCache]: Analyzing trace with hash 1553713337, now seen corresponding path program 1 times [2022-11-02 21:10:16,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:10:16,785 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508562196] [2022-11-02 21:10:16,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:10:16,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:10:16,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:16,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:10:16,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:10:16,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508562196] [2022-11-02 21:10:16,941 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508562196] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:10:16,941 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:10:16,941 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:10:16,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360469934] [2022-11-02 21:10:16,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:10:16,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:10:16,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:10:16,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:10:16,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:10:16,944 INFO L87 Difference]: Start difference. First operand 4152 states and 11172 transitions. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:17,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:10:17,285 INFO L93 Difference]: Finished difference Result 4571 states and 11581 transitions. [2022-11-02 21:10:17,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 21:10:17,285 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 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 21:10:17,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:10:17,309 INFO L225 Difference]: With dead ends: 4571 [2022-11-02 21:10:17,309 INFO L226 Difference]: Without dead ends: 4535 [2022-11-02 21:10:17,310 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:10:17,311 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 138 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 279 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 21:10:17,311 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 54 Invalid, 289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 279 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 21:10:17,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4535 states. [2022-11-02 21:10:17,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4535 to 3800. [2022-11-02 21:10:17,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3800 states, 3720 states have (on average 2.717204301075269) internal successors, (10108), 3799 states have internal predecessors, (10108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:17,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3800 states to 3800 states and 10108 transitions. [2022-11-02 21:10:17,449 INFO L78 Accepts]: Start accepts. Automaton has 3800 states and 10108 transitions. Word has length 11 [2022-11-02 21:10:17,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:10:17,449 INFO L495 AbstractCegarLoop]: Abstraction has 3800 states and 10108 transitions. [2022-11-02 21:10:17,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:17,449 INFO L276 IsEmpty]: Start isEmpty. Operand 3800 states and 10108 transitions. [2022-11-02 21:10:17,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-02 21:10:17,450 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:10:17,451 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-11-02 21:10:17,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-02 21:10:17,451 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-02 21:10:17,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:10:17,451 INFO L85 PathProgramCache]: Analyzing trace with hash -1070237671, now seen corresponding path program 1 times [2022-11-02 21:10:17,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:10:17,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925368333] [2022-11-02 21:10:17,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:10:17,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:10:17,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 21:10:17,468 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 21:10:17,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 21:10:17,483 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 21:10:17,484 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-02 21:10:17,484 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2022-11-02 21:10:17,484 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2022-11-02 21:10:17,484 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2022-11-02 21:10:17,484 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2022-11-02 21:10:17,485 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2022-11-02 21:10:17,485 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2022-11-02 21:10:17,485 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2022-11-02 21:10:17,485 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2022-11-02 21:10:17,485 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 17 remaining) [2022-11-02 21:10:17,486 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 17 remaining) [2022-11-02 21:10:17,486 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 17 remaining) [2022-11-02 21:10:17,486 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2022-11-02 21:10:17,486 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2022-11-02 21:10:17,486 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2022-11-02 21:10:17,487 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2022-11-02 21:10:17,487 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2022-11-02 21:10:17,487 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2022-11-02 21:10:17,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-02 21:10:17,488 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:10:17,488 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-02 21:10:17,488 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-02 21:10:17,513 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-02 21:10:17,516 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-02 21:10:17,516 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 198 places, 220 transitions, 470 flow [2022-11-02 21:10:17,516 INFO L112 LiptonReduction]: Starting Lipton reduction on Petri net that has 198 places, 220 transitions, 470 flow [2022-11-02 21:10:17,516 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 198 places, 220 transitions, 470 flow [2022-11-02 21:10:17,615 INFO L130 PetriNetUnfolder]: 62/467 cut-off events. [2022-11-02 21:10:17,615 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-11-02 21:10:17,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 495 conditions, 467 events. 62/467 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1585 event pairs, 1 based on Foata normal form. 0/369 useless extension candidates. Maximal degree in co-relation 315. Up to 16 conditions per place. [2022-11-02 21:10:17,643 INFO L118 LiptonReduction]: Number of co-enabled transitions 21816 [2022-11-02 21:10:24,172 INFO L133 LiptonReduction]: Checked pairs total: 55488 [2022-11-02 21:10:24,173 INFO L135 LiptonReduction]: Total number of compositions: 201 [2022-11-02 21:10:24,174 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 73 places, 90 transitions, 210 flow [2022-11-02 21:10:26,747 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 65789 states, 64832 states have (on average 4.972822063178677) internal successors, (322398), 65788 states have internal predecessors, (322398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:26,748 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 21:10:26,748 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;@58a3d88c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 21:10:26,749 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2022-11-02 21:10:27,084 INFO L276 IsEmpty]: Start isEmpty. Operand has 65789 states, 64832 states have (on average 4.972822063178677) internal successors, (322398), 65788 states have internal predecessors, (322398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:27,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-02 21:10:27,085 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:10:27,085 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-02 21:10:27,085 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-02 21:10:27,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:10:27,086 INFO L85 PathProgramCache]: Analyzing trace with hash 1341962865, now seen corresponding path program 1 times [2022-11-02 21:10:27,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:10:27,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564164186] [2022-11-02 21:10:27,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:10:27,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:10:27,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:27,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:10:27,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:10:27,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564164186] [2022-11-02 21:10:27,129 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564164186] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:10:27,129 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:10:27,129 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-02 21:10:27,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82727440] [2022-11-02 21:10:27,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:10:27,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:10:27,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:10:27,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:10:27,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:10:27,254 INFO L87 Difference]: Start difference. First operand has 65789 states, 64832 states have (on average 4.972822063178677) internal successors, (322398), 65788 states have internal predecessors, (322398), 0 states have call successors, (0), 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 21:10:28,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:10:28,998 INFO L93 Difference]: Finished difference Result 65753 states and 242942 transitions. [2022-11-02 21:10:28,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:10:28,999 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 21:10:29,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:10:30,128 INFO L225 Difference]: With dead ends: 65753 [2022-11-02 21:10:30,128 INFO L226 Difference]: Without dead ends: 65627 [2022-11-02 21:10:30,129 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:10:30,131 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 15 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:10:30,131 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 24 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:10:30,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65627 states. [2022-11-02 21:10:33,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65627 to 65627. [2022-11-02 21:10:33,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65627 states, 64688 states have (on average 3.7490106356665844) internal successors, (242516), 65626 states have internal predecessors, (242516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:33,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65627 states to 65627 states and 242516 transitions. [2022-11-02 21:10:33,996 INFO L78 Accepts]: Start accepts. Automaton has 65627 states and 242516 transitions. Word has length 5 [2022-11-02 21:10:33,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:10:33,996 INFO L495 AbstractCegarLoop]: Abstraction has 65627 states and 242516 transitions. [2022-11-02 21:10:33,997 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 21:10:33,997 INFO L276 IsEmpty]: Start isEmpty. Operand 65627 states and 242516 transitions. [2022-11-02 21:10:33,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-02 21:10:33,997 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:10:33,997 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:10:33,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-02 21:10:33,998 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-02 21:10:33,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:10:33,999 INFO L85 PathProgramCache]: Analyzing trace with hash 1145938319, now seen corresponding path program 1 times [2022-11-02 21:10:33,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:10:33,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338702499] [2022-11-02 21:10:33,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:10:33,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:10:34,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:34,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:10:34,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:10:34,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338702499] [2022-11-02 21:10:34,058 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338702499] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:10:34,058 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:10:34,058 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-02 21:10:34,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171460342] [2022-11-02 21:10:34,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:10:34,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:10:34,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:10:34,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:10:34,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:10:34,060 INFO L87 Difference]: Start difference. First operand 65627 states and 242516 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:35,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:10:35,195 INFO L93 Difference]: Finished difference Result 87108 states and 297054 transitions. [2022-11-02 21:10:35,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:10:35,197 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-02 21:10:35,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:10:35,888 INFO L225 Difference]: With dead ends: 87108 [2022-11-02 21:10:35,888 INFO L226 Difference]: Without dead ends: 86964 [2022-11-02 21:10:35,889 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:10:35,889 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 46 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:10:35,890 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 23 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 21:10:36,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86964 states. [2022-11-02 21:10:38,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86964 to 81528. [2022-11-02 21:10:38,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81528 states, 80637 states have (on average 3.5427037216166277) internal successors, (285673), 81527 states have internal predecessors, (285673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:39,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81528 states to 81528 states and 285673 transitions. [2022-11-02 21:10:39,757 INFO L78 Accepts]: Start accepts. Automaton has 81528 states and 285673 transitions. Word has length 7 [2022-11-02 21:10:39,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:10:39,757 INFO L495 AbstractCegarLoop]: Abstraction has 81528 states and 285673 transitions. [2022-11-02 21:10:39,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:39,758 INFO L276 IsEmpty]: Start isEmpty. Operand 81528 states and 285673 transitions. [2022-11-02 21:10:39,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-02 21:10:39,758 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:10:39,758 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-11-02 21:10:39,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-02 21:10:39,759 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-02 21:10:39,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:10:39,759 INFO L85 PathProgramCache]: Analyzing trace with hash 986357594, now seen corresponding path program 1 times [2022-11-02 21:10:39,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:10:39,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556354199] [2022-11-02 21:10:39,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:10:39,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:10:39,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:39,798 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 21:10:39,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:10:39,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556354199] [2022-11-02 21:10:39,799 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556354199] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:10:39,799 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:10:39,799 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 21:10:39,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439554032] [2022-11-02 21:10:39,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:10:39,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:10:39,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:10:39,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:10:39,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:10:39,801 INFO L87 Difference]: Start difference. First operand 81528 states and 285673 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 21:10:41,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:10:41,426 INFO L93 Difference]: Finished difference Result 77418 states and 270265 transitions. [2022-11-02 21:10:41,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:10:41,427 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 21:10:41,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:10:41,886 INFO L225 Difference]: With dead ends: 77418 [2022-11-02 21:10:41,886 INFO L226 Difference]: Without dead ends: 77418 [2022-11-02 21:10:41,887 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:10:41,887 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 49 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:10:41,888 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 22 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:10:42,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77418 states. [2022-11-02 21:10:44,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77418 to 77418. [2022-11-02 21:10:44,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77418 states, 76665 states have (on average 3.5252722885280114) internal successors, (270265), 77417 states have internal predecessors, (270265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:45,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77418 states to 77418 states and 270265 transitions. [2022-11-02 21:10:45,458 INFO L78 Accepts]: Start accepts. Automaton has 77418 states and 270265 transitions. Word has length 9 [2022-11-02 21:10:45,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:10:45,459 INFO L495 AbstractCegarLoop]: Abstraction has 77418 states and 270265 transitions. [2022-11-02 21:10:45,459 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 21:10:45,459 INFO L276 IsEmpty]: Start isEmpty. Operand 77418 states and 270265 transitions. [2022-11-02 21:10:45,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-02 21:10:45,460 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:10:45,460 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-11-02 21:10:45,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-02 21:10:45,460 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-02 21:10:45,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:10:45,460 INFO L85 PathProgramCache]: Analyzing trace with hash 986357595, now seen corresponding path program 1 times [2022-11-02 21:10:45,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:10:45,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749089515] [2022-11-02 21:10:45,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:10:45,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:10:45,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:45,543 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:10:45,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:10:45,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749089515] [2022-11-02 21:10:45,551 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749089515] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:10:45,551 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:10:45,551 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 21:10:45,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768017474] [2022-11-02 21:10:45,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:10:45,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:10:45,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:10:45,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:10:45,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:10:45,553 INFO L87 Difference]: Start difference. First operand 77418 states and 270265 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 21:10:46,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:10:46,236 INFO L93 Difference]: Finished difference Result 73308 states and 254857 transitions. [2022-11-02 21:10:46,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:10:46,237 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 21:10:46,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:10:46,681 INFO L225 Difference]: With dead ends: 73308 [2022-11-02 21:10:46,681 INFO L226 Difference]: Without dead ends: 73308 [2022-11-02 21:10:46,681 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:10:46,683 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 63 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:10:46,684 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 12 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:10:47,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73308 states. [2022-11-02 21:10:49,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73308 to 73308. [2022-11-02 21:10:49,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73308 states, 72693 states have (on average 3.5059359223033857) internal successors, (254857), 73307 states have internal predecessors, (254857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:49,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73308 states to 73308 states and 254857 transitions. [2022-11-02 21:10:49,731 INFO L78 Accepts]: Start accepts. Automaton has 73308 states and 254857 transitions. Word has length 9 [2022-11-02 21:10:49,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:10:49,732 INFO L495 AbstractCegarLoop]: Abstraction has 73308 states and 254857 transitions. [2022-11-02 21:10:49,732 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 21:10:49,732 INFO L276 IsEmpty]: Start isEmpty. Operand 73308 states and 254857 transitions. [2022-11-02 21:10:49,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-02 21:10:49,733 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:10:49,733 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:10:49,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-02 21:10:49,734 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-02 21:10:49,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:10:49,734 INFO L85 PathProgramCache]: Analyzing trace with hash 1124605421, now seen corresponding path program 1 times [2022-11-02 21:10:49,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:10:49,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139596357] [2022-11-02 21:10:49,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:10:49,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:10:49,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:49,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:10:49,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:10:49,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139596357] [2022-11-02 21:10:49,810 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139596357] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:10:49,811 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:10:49,811 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:10:49,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237445903] [2022-11-02 21:10:49,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:10:49,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:10:49,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:10:49,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:10:49,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:10:49,813 INFO L87 Difference]: Start difference. First operand 73308 states and 254857 transitions. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:52,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:10:52,048 INFO L93 Difference]: Finished difference Result 103589 states and 345010 transitions. [2022-11-02 21:10:52,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 21:10:52,049 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 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 21:10:52,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:10:52,580 INFO L225 Difference]: With dead ends: 103589 [2022-11-02 21:10:52,580 INFO L226 Difference]: Without dead ends: 103589 [2022-11-02 21:10:52,581 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:10:52,581 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 212 mSDsluCounter, 324 mSDsCounter, 0 mSdLazyCounter, 597 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 597 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-02 21:10:52,582 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [212 Valid, 101 Invalid, 614 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 597 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-02 21:10:52,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103589 states. [2022-11-02 21:10:55,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103589 to 90335. [2022-11-02 21:10:56,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90335 states, 89644 states have (on average 3.479641693811075) internal successors, (311929), 90334 states have internal predecessors, (311929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:56,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90335 states to 90335 states and 311929 transitions. [2022-11-02 21:10:56,400 INFO L78 Accepts]: Start accepts. Automaton has 90335 states and 311929 transitions. Word has length 11 [2022-11-02 21:10:56,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:10:56,400 INFO L495 AbstractCegarLoop]: Abstraction has 90335 states and 311929 transitions. [2022-11-02 21:10:56,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:56,400 INFO L276 IsEmpty]: Start isEmpty. Operand 90335 states and 311929 transitions. [2022-11-02 21:10:56,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-02 21:10:56,401 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:10:56,401 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:10:56,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-02 21:10:56,402 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-02 21:10:56,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:10:56,402 INFO L85 PathProgramCache]: Analyzing trace with hash 1124605392, now seen corresponding path program 1 times [2022-11-02 21:10:56,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:10:56,403 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115562536] [2022-11-02 21:10:56,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:10:56,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:10:56,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:56,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:10:56,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:10:56,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115562536] [2022-11-02 21:10:56,471 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115562536] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:10:56,471 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:10:56,471 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:10:56,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020098976] [2022-11-02 21:10:56,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:10:56,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:10:56,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:10:56,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:10:56,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:10:56,473 INFO L87 Difference]: Start difference. First operand 90335 states and 311929 transitions. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:58,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:10:58,426 INFO L93 Difference]: Finished difference Result 108323 states and 353647 transitions. [2022-11-02 21:10:58,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 21:10:58,427 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 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 21:10:58,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:10:58,981 INFO L225 Difference]: With dead ends: 108323 [2022-11-02 21:10:58,981 INFO L226 Difference]: Without dead ends: 108179 [2022-11-02 21:10:58,981 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:10:58,982 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 240 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 452 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 240 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 452 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 21:10:58,983 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [240 Valid, 70 Invalid, 469 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 452 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 21:10:59,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108179 states. [2022-11-02 21:11:02,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108179 to 89504. [2022-11-02 21:11:02,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89504 states, 88891 states have (on average 3.4104577516283987) internal successors, (303159), 89503 states have internal predecessors, (303159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:11:02,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89504 states to 89504 states and 303159 transitions. [2022-11-02 21:11:02,968 INFO L78 Accepts]: Start accepts. Automaton has 89504 states and 303159 transitions. Word has length 11 [2022-11-02 21:11:02,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:11:02,968 INFO L495 AbstractCegarLoop]: Abstraction has 89504 states and 303159 transitions. [2022-11-02 21:11:02,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:11:02,968 INFO L276 IsEmpty]: Start isEmpty. Operand 89504 states and 303159 transitions. [2022-11-02 21:11:02,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-02 21:11:02,969 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:11:02,969 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2022-11-02 21:11:02,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-02 21:11:02,970 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-02 21:11:02,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:11:02,970 INFO L85 PathProgramCache]: Analyzing trace with hash -1039232480, now seen corresponding path program 1 times [2022-11-02 21:11:02,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:11:02,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200572820] [2022-11-02 21:11:02,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:11:02,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:11:03,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 21:11:03,006 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 21:11:03,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 21:11:03,037 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 21:11:03,042 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-02 21:11:03,042 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 21 remaining) [2022-11-02 21:11:03,043 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 21 remaining) [2022-11-02 21:11:03,044 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 21 remaining) [2022-11-02 21:11:03,044 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 21 remaining) [2022-11-02 21:11:03,046 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 21 remaining) [2022-11-02 21:11:03,046 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 21 remaining) [2022-11-02 21:11:03,046 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 21 remaining) [2022-11-02 21:11:03,047 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 21 remaining) [2022-11-02 21:11:03,047 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 21 remaining) [2022-11-02 21:11:03,047 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 21 remaining) [2022-11-02 21:11:03,047 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 21 remaining) [2022-11-02 21:11:03,048 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 21 remaining) [2022-11-02 21:11:03,048 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 21 remaining) [2022-11-02 21:11:03,048 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 21 remaining) [2022-11-02 21:11:03,048 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 21 remaining) [2022-11-02 21:11:03,049 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 21 remaining) [2022-11-02 21:11:03,049 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 21 remaining) [2022-11-02 21:11:03,050 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 21 remaining) [2022-11-02 21:11:03,050 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 21 remaining) [2022-11-02 21:11:03,051 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 21 remaining) [2022-11-02 21:11:03,051 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 21 remaining) [2022-11-02 21:11:03,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-02 21:11:03,052 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:11:03,052 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-02 21:11:03,053 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-11-02 21:11:03,084 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-11-02 21:11:03,087 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-02 21:11:03,088 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 231 places, 258 transitions, 560 flow [2022-11-02 21:11:03,088 INFO L112 LiptonReduction]: Starting Lipton reduction on Petri net that has 231 places, 258 transitions, 560 flow [2022-11-02 21:11:03,088 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 231 places, 258 transitions, 560 flow [2022-11-02 21:11:03,239 INFO L130 PetriNetUnfolder]: 96/711 cut-off events. [2022-11-02 21:11:03,239 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2022-11-02 21:11:03,249 INFO L83 FinitePrefix]: Finished finitePrefix Result has 766 conditions, 711 events. 96/711 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2773 event pairs, 6 based on Foata normal form. 0/561 useless extension candidates. Maximal degree in co-relation 487. Up to 32 conditions per place. [2022-11-02 21:11:03,280 INFO L118 LiptonReduction]: Number of co-enabled transitions 34704 [2022-11-02 21:11:10,311 INFO L133 LiptonReduction]: Checked pairs total: 93978 [2022-11-02 21:11:10,311 INFO L135 LiptonReduction]: Total number of compositions: 227 [2022-11-02 21:11:10,313 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 91 places, 113 transitions, 270 flow