./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-figure1-alt.wvr.c --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_ceb71b8d-0ebb-469a-abfc-cdc6c8b2ff10/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceb71b8d-0ebb-469a-abfc-cdc6c8b2ff10/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_ceb71b8d-0ebb-469a-abfc-cdc6c8b2ff10/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceb71b8d-0ebb-469a-abfc-cdc6c8b2ff10/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-figure1-alt.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceb71b8d-0ebb-469a-abfc-cdc6c8b2ff10/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_ceb71b8d-0ebb-469a-abfc-cdc6c8b2ff10/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 fd523f7f98069bc15a8892c75be26f15a858863c31fc6ea863dcd5f92e46c458 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-02 20:50:47,004 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:50:47,006 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:50:47,040 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:50:47,041 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:50:47,042 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:50:47,044 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:50:47,046 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:50:47,048 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:50:47,049 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:50:47,050 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:50:47,052 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:50:47,052 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:50:47,053 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:50:47,055 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:50:47,056 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:50:47,058 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:50:47,059 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:50:47,061 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:50:47,063 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:50:47,065 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:50:47,067 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:50:47,069 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:50:47,070 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:50:47,074 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:50:47,075 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:50:47,075 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:50:47,076 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:50:47,077 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:50:47,078 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:50:47,078 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:50:47,079 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:50:47,080 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:50:47,081 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:50:47,082 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:50:47,083 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:50:47,083 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:50:47,084 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:50:47,084 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:50:47,085 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:50:47,086 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:50:47,087 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceb71b8d-0ebb-469a-abfc-cdc6c8b2ff10/bin/uautomizer-Dbtcem3rbc/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-02 20:50:47,109 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:50:47,110 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:50:47,110 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:50:47,110 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:50:47,111 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:50:47,111 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:50:47,112 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:50:47,113 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:50:47,113 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:50:47,113 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:50:47,114 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 20:50:47,114 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-02 20:50:47,114 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:50:47,114 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 20:50:47,115 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:50:47,115 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:50:47,115 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:50:47,115 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:50:47,116 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-02 20:50:47,116 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 20:50:47,116 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:50:47,116 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:50:47,116 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:50:47,117 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:50:47,117 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:50:47,117 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:50:47,117 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:50:47,118 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:50:47,118 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:50:47,118 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:50:47,118 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:50:47,119 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:50:47,119 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:50:47,119 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_ceb71b8d-0ebb-469a-abfc-cdc6c8b2ff10/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceb71b8d-0ebb-469a-abfc-cdc6c8b2ff10/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fd523f7f98069bc15a8892c75be26f15a858863c31fc6ea863dcd5f92e46c458 [2022-11-02 20:50:47,463 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:50:47,494 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:50:47,498 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:50:47,500 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:50:47,501 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:50:47,503 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceb71b8d-0ebb-469a-abfc-cdc6c8b2ff10/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/weaver/popl20-figure1-alt.wvr.c [2022-11-02 20:50:47,591 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceb71b8d-0ebb-469a-abfc-cdc6c8b2ff10/bin/uautomizer-Dbtcem3rbc/data/9552c4a29/5f37e461de074e34821218468aa751bb/FLAG2a35f1463 [2022-11-02 20:50:48,214 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:50:48,217 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceb71b8d-0ebb-469a-abfc-cdc6c8b2ff10/sv-benchmarks/c/weaver/popl20-figure1-alt.wvr.c [2022-11-02 20:50:48,228 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceb71b8d-0ebb-469a-abfc-cdc6c8b2ff10/bin/uautomizer-Dbtcem3rbc/data/9552c4a29/5f37e461de074e34821218468aa751bb/FLAG2a35f1463 [2022-11-02 20:50:48,529 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceb71b8d-0ebb-469a-abfc-cdc6c8b2ff10/bin/uautomizer-Dbtcem3rbc/data/9552c4a29/5f37e461de074e34821218468aa751bb [2022-11-02 20:50:48,533 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:50:48,535 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:50:48,537 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:50:48,537 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:50:48,542 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:50:48,543 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:50:48" (1/1) ... [2022-11-02 20:50:48,544 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5090cb60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:50:48, skipping insertion in model container [2022-11-02 20:50:48,545 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:50:48" (1/1) ... [2022-11-02 20:50:48,554 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:50:48,573 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:50:48,804 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_ceb71b8d-0ebb-469a-abfc-cdc6c8b2ff10/sv-benchmarks/c/weaver/popl20-figure1-alt.wvr.c[2087,2100] [2022-11-02 20:50:48,806 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:50:48,814 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:50:48,835 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_ceb71b8d-0ebb-469a-abfc-cdc6c8b2ff10/sv-benchmarks/c/weaver/popl20-figure1-alt.wvr.c[2087,2100] [2022-11-02 20:50:48,836 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:50:48,850 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:50:48,850 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:50:48 WrapperNode [2022-11-02 20:50:48,851 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:50:48,852 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:50:48,852 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:50:48,852 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:50:48,860 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:50:48" (1/1) ... [2022-11-02 20:50:48,868 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:50:48" (1/1) ... [2022-11-02 20:50:48,888 INFO L138 Inliner]: procedures = 21, calls = 25, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 82 [2022-11-02 20:50:48,889 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:50:48,889 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:50:48,890 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:50:48,890 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:50:48,899 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:50:48" (1/1) ... [2022-11-02 20:50:48,899 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:50:48" (1/1) ... [2022-11-02 20:50:48,901 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:50:48" (1/1) ... [2022-11-02 20:50:48,902 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:50:48" (1/1) ... [2022-11-02 20:50:48,906 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:50:48" (1/1) ... [2022-11-02 20:50:48,910 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:50:48" (1/1) ... [2022-11-02 20:50:48,911 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:50:48" (1/1) ... [2022-11-02 20:50:48,913 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:50:48" (1/1) ... [2022-11-02 20:50:48,915 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:50:48,916 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:50:48,916 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:50:48,916 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:50:48,917 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:50:48" (1/1) ... [2022-11-02 20:50:48,924 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:50:48,937 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceb71b8d-0ebb-469a-abfc-cdc6c8b2ff10/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:50:48,950 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceb71b8d-0ebb-469a-abfc-cdc6c8b2ff10/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:50:48,978 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceb71b8d-0ebb-469a-abfc-cdc6c8b2ff10/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:50:49,009 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 20:50:49,010 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-02 20:50:49,010 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-02 20:50:49,010 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-02 20:50:49,010 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-02 20:50:49,011 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 20:50:49,011 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 20:50:49,012 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-02 20:50:49,013 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-02 20:50:49,013 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-02 20:50:49,014 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:50:49,014 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:50:49,014 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-02 20:50:49,014 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 20:50:49,016 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-02 20:50:49,143 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:50:49,145 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:50:49,457 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:50:49,553 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:50:49,553 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-02 20:50:49,556 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:50:49 BoogieIcfgContainer [2022-11-02 20:50:49,556 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:50:49,559 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:50:49,559 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:50:49,577 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:50:49,578 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:50:48" (1/3) ... [2022-11-02 20:50:49,579 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14768cb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:50:49, skipping insertion in model container [2022-11-02 20:50:49,579 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:50:48" (2/3) ... [2022-11-02 20:50:49,580 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14768cb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:50:49, skipping insertion in model container [2022-11-02 20:50:49,580 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:50:49" (3/3) ... [2022-11-02 20:50:49,582 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-figure1-alt.wvr.c [2022-11-02 20:50:49,596 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-02 20:50:49,608 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:50:49,608 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2022-11-02 20:50:49,608 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-02 20:50:49,680 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-02 20:50:49,720 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-02 20:50:49,737 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 105 places, 104 transitions, 224 flow [2022-11-02 20:50:49,741 INFO L112 LiptonReduction]: Starting Lipton reduction on Petri net that has 105 places, 104 transitions, 224 flow [2022-11-02 20:50:49,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 105 places, 104 transitions, 224 flow [2022-11-02 20:50:49,797 INFO L130 PetriNetUnfolder]: 6/102 cut-off events. [2022-11-02 20:50:49,797 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-02 20:50:49,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111 conditions, 102 events. 6/102 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 89 event pairs, 0 based on Foata normal form. 0/86 useless extension candidates. Maximal degree in co-relation 58. Up to 2 conditions per place. [2022-11-02 20:50:49,803 INFO L118 LiptonReduction]: Number of co-enabled transitions 992 [2022-11-02 20:50:54,899 INFO L133 LiptonReduction]: Checked pairs total: 1270 [2022-11-02 20:50:54,899 INFO L135 LiptonReduction]: Total number of compositions: 103 [2022-11-02 20:50:54,908 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 27 transitions, 70 flow [2022-11-02 20:50:54,933 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 131 states, 105 states have (on average 2.914285714285714) internal successors, (306), 130 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:54,953 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:50:54,960 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;@82092d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:50:54,961 INFO L358 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2022-11-02 20:50:54,963 INFO L276 IsEmpty]: Start isEmpty. Operand has 131 states, 105 states have (on average 2.914285714285714) internal successors, (306), 130 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:54,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-02 20:50:54,968 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:50:54,968 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-02 20:50:54,969 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-11-02 20:50:54,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:50:54,974 INFO L85 PathProgramCache]: Analyzing trace with hash 13501256, now seen corresponding path program 1 times [2022-11-02 20:50:54,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:50:54,983 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92387059] [2022-11-02 20:50:54,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:50:54,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:50:55,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:50:55,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:50:55,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:50:55,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92387059] [2022-11-02 20:50:55,278 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92387059] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:50:55,278 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:50:55,278 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:50:55,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999689964] [2022-11-02 20:50:55,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:50:55,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:50:55,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:50:55,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:50:55,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:50:55,323 INFO L87 Difference]: Start difference. First operand has 131 states, 105 states have (on average 2.914285714285714) internal successors, (306), 130 states have internal predecessors, (306), 0 states have call successors, (0), 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), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:55,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:50:55,450 INFO L93 Difference]: Finished difference Result 186 states and 430 transitions. [2022-11-02 20:50:55,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:50:55,453 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-11-02 20:50:55,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:50:55,471 INFO L225 Difference]: With dead ends: 186 [2022-11-02 20:50:55,471 INFO L226 Difference]: Without dead ends: 186 [2022-11-02 20:50:55,473 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:50:55,479 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 17 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:50:55,481 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 4 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:50:55,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2022-11-02 20:50:55,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 129. [2022-11-02 20:50:55,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 108 states have (on average 3.175925925925926) internal successors, (343), 128 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:55,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 343 transitions. [2022-11-02 20:50:55,561 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 343 transitions. Word has length 4 [2022-11-02 20:50:55,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:50:55,563 INFO L495 AbstractCegarLoop]: Abstraction has 129 states and 343 transitions. [2022-11-02 20:50:55,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:55,563 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 343 transitions. [2022-11-02 20:50:55,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-02 20:50:55,564 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:50:55,564 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-02 20:50:55,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:50:55,564 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-11-02 20:50:55,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:50:55,566 INFO L85 PathProgramCache]: Analyzing trace with hash 13501202, now seen corresponding path program 1 times [2022-11-02 20:50:55,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:50:55,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887776554] [2022-11-02 20:50:55,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:50:55,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:50:55,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:50:55,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:50:55,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:50:55,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887776554] [2022-11-02 20:50:55,666 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887776554] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:50:55,668 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:50:55,668 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-02 20:50:55,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450707060] [2022-11-02 20:50:55,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:50:55,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:50:55,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:50:55,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:50:55,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:50:55,675 INFO L87 Difference]: Start difference. First operand 129 states and 343 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:55,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:50:55,757 INFO L93 Difference]: Finished difference Result 134 states and 297 transitions. [2022-11-02 20:50:55,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:50:55,758 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-11-02 20:50:55,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:50:55,766 INFO L225 Difference]: With dead ends: 134 [2022-11-02 20:50:55,768 INFO L226 Difference]: Without dead ends: 134 [2022-11-02 20:50:55,768 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:50:55,771 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 12 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:50:55,772 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 3 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:50:55,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2022-11-02 20:50:55,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 127. [2022-11-02 20:50:55,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 106 states have (on average 2.7452830188679247) internal successors, (291), 126 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:55,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 291 transitions. [2022-11-02 20:50:55,786 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 291 transitions. Word has length 4 [2022-11-02 20:50:55,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:50:55,786 INFO L495 AbstractCegarLoop]: Abstraction has 127 states and 291 transitions. [2022-11-02 20:50:55,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:55,787 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 291 transitions. [2022-11-02 20:50:55,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-02 20:50:55,787 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:50:55,787 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-02 20:50:55,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 20:50:55,788 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-11-02 20:50:55,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:50:55,789 INFO L85 PathProgramCache]: Analyzing trace with hash 13501204, now seen corresponding path program 1 times [2022-11-02 20:50:55,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:50:55,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998903281] [2022-11-02 20:50:55,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:50:55,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:50:55,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:50:55,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:50:55,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:50:55,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998903281] [2022-11-02 20:50:55,880 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998903281] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:50:55,894 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:50:55,894 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-02 20:50:55,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765548870] [2022-11-02 20:50:55,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:50:55,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:50:55,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:50:55,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:50:55,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:50:55,896 INFO L87 Difference]: Start difference. First operand 127 states and 291 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:55,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:50:55,939 INFO L93 Difference]: Finished difference Result 113 states and 257 transitions. [2022-11-02 20:50:55,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:50:55,939 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-11-02 20:50:55,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:50:55,941 INFO L225 Difference]: With dead ends: 113 [2022-11-02 20:50:55,941 INFO L226 Difference]: Without dead ends: 113 [2022-11-02 20:50:55,941 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:50:55,942 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 13 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:50:55,943 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:50:55,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2022-11-02 20:50:55,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2022-11-02 20:50:55,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 96 states have (on average 2.6770833333333335) internal successors, (257), 112 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:55,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 257 transitions. [2022-11-02 20:50:55,950 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 257 transitions. Word has length 4 [2022-11-02 20:50:55,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:50:55,950 INFO L495 AbstractCegarLoop]: Abstraction has 113 states and 257 transitions. [2022-11-02 20:50:55,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:55,951 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 257 transitions. [2022-11-02 20:50:55,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-02 20:50:55,951 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:50:55,951 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-02 20:50:55,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 20:50:55,952 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-11-02 20:50:55,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:50:55,952 INFO L85 PathProgramCache]: Analyzing trace with hash 418539878, now seen corresponding path program 1 times [2022-11-02 20:50:55,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:50:55,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620238064] [2022-11-02 20:50:55,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:50:55,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:50:55,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:50:55,994 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:50:55,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:50:55,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620238064] [2022-11-02 20:50:55,995 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620238064] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:50:55,995 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:50:55,995 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:50:55,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495336891] [2022-11-02 20:50:55,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:50:55,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:50:55,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:50:55,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:50:55,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:50:56,000 INFO L87 Difference]: Start difference. First operand 113 states and 257 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:56,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:50:56,052 INFO L93 Difference]: Finished difference Result 99 states and 223 transitions. [2022-11-02 20:50:56,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:50:56,052 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-02 20:50:56,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:50:56,053 INFO L225 Difference]: With dead ends: 99 [2022-11-02 20:50:56,053 INFO L226 Difference]: Without dead ends: 99 [2022-11-02 20:50:56,054 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:50:56,055 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 17 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:50:56,055 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 4 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:50:56,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2022-11-02 20:50:56,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2022-11-02 20:50:56,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 86 states have (on average 2.5930232558139537) internal successors, (223), 98 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:56,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 223 transitions. [2022-11-02 20:50:56,063 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 223 transitions. Word has length 5 [2022-11-02 20:50:56,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:50:56,063 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 223 transitions. [2022-11-02 20:50:56,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:56,064 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 223 transitions. [2022-11-02 20:50:56,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-02 20:50:56,064 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:50:56,064 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-02 20:50:56,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-02 20:50:56,065 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-11-02 20:50:56,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:50:56,066 INFO L85 PathProgramCache]: Analyzing trace with hash 418539824, now seen corresponding path program 1 times [2022-11-02 20:50:56,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:50:56,066 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008666809] [2022-11-02 20:50:56,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:50:56,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:50:56,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:50:56,149 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:50:56,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:50:56,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008666809] [2022-11-02 20:50:56,150 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008666809] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:50:56,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1092625765] [2022-11-02 20:50:56,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:50:56,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:50:56,151 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceb71b8d-0ebb-469a-abfc-cdc6c8b2ff10/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:50:56,153 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceb71b8d-0ebb-469a-abfc-cdc6c8b2ff10/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:50:56,184 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceb71b8d-0ebb-469a-abfc-cdc6c8b2ff10/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-02 20:50:56,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:50:56,231 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 20:50:56,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:50:56,285 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:50:56,285 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:50:56,323 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:50:56,324 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1092625765] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:50:56,324 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:50:56,324 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 4 [2022-11-02 20:50:56,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948849244] [2022-11-02 20:50:56,324 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:50:56,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:50:56,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:50:56,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:50:56,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:50:56,326 INFO L87 Difference]: Start difference. First operand 99 states and 223 transitions. Second operand has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:56,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:50:56,551 INFO L93 Difference]: Finished difference Result 277 states and 603 transitions. [2022-11-02 20:50:56,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 20:50:56,552 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-02 20:50:56,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:50:56,554 INFO L225 Difference]: With dead ends: 277 [2022-11-02 20:50:56,554 INFO L226 Difference]: Without dead ends: 277 [2022-11-02 20:50:56,554 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:50:56,556 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 57 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:50:56,556 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 6 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:50:56,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2022-11-02 20:50:56,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 173. [2022-11-02 20:50:56,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 160 states have (on average 3.0875) internal successors, (494), 172 states have internal predecessors, (494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:56,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 494 transitions. [2022-11-02 20:50:56,580 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 494 transitions. Word has length 5 [2022-11-02 20:50:56,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:50:56,581 INFO L495 AbstractCegarLoop]: Abstraction has 173 states and 494 transitions. [2022-11-02 20:50:56,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:56,581 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 494 transitions. [2022-11-02 20:50:56,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-02 20:50:56,582 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:50:56,582 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-02 20:50:56,620 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceb71b8d-0ebb-469a-abfc-cdc6c8b2ff10/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-02 20:50:56,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceb71b8d-0ebb-469a-abfc-cdc6c8b2ff10/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:50:56,803 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-11-02 20:50:56,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:50:56,803 INFO L85 PathProgramCache]: Analyzing trace with hash 418539873, now seen corresponding path program 1 times [2022-11-02 20:50:56,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:50:56,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635037222] [2022-11-02 20:50:56,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:50:56,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:50:56,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:50:56,896 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:50:56,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:50:56,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635037222] [2022-11-02 20:50:56,896 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635037222] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:50:56,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [47216648] [2022-11-02 20:50:56,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:50:56,897 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:50:56,897 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceb71b8d-0ebb-469a-abfc-cdc6c8b2ff10/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:50:56,899 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceb71b8d-0ebb-469a-abfc-cdc6c8b2ff10/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:50:56,931 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceb71b8d-0ebb-469a-abfc-cdc6c8b2ff10/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-02 20:50:56,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:50:56,970 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 20:50:56,971 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:50:56,980 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:50:56,980 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:50:56,996 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:50:56,996 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [47216648] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:50:56,996 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:50:56,997 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-11-02 20:50:56,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276672099] [2022-11-02 20:50:56,997 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:50:56,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:50:56,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:50:56,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:50:56,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:50:56,999 INFO L87 Difference]: Start difference. First operand 173 states and 494 transitions. Second operand has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:57,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:50:57,131 INFO L93 Difference]: Finished difference Result 331 states and 875 transitions. [2022-11-02 20:50:57,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 20:50:57,132 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-02 20:50:57,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:50:57,134 INFO L225 Difference]: With dead ends: 331 [2022-11-02 20:50:57,134 INFO L226 Difference]: Without dead ends: 331 [2022-11-02 20:50:57,135 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:50:57,136 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 78 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:50:57,136 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 9 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:50:57,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2022-11-02 20:50:57,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 237. [2022-11-02 20:50:57,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 224 states have (on average 3.1294642857142856) internal successors, (701), 236 states have internal predecessors, (701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:57,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 701 transitions. [2022-11-02 20:50:57,147 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 701 transitions. Word has length 5 [2022-11-02 20:50:57,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:50:57,148 INFO L495 AbstractCegarLoop]: Abstraction has 237 states and 701 transitions. [2022-11-02 20:50:57,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:57,148 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 701 transitions. [2022-11-02 20:50:57,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-02 20:50:57,149 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:50:57,149 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1] [2022-11-02 20:50:57,184 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceb71b8d-0ebb-469a-abfc-cdc6c8b2ff10/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-02 20:50:57,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceb71b8d-0ebb-469a-abfc-cdc6c8b2ff10/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:50:57,363 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-11-02 20:50:57,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:50:57,363 INFO L85 PathProgramCache]: Analyzing trace with hash 432380562, now seen corresponding path program 2 times [2022-11-02 20:50:57,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:50:57,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166960686] [2022-11-02 20:50:57,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:50:57,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:50:57,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:50:57,444 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:50:57,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:50:57,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166960686] [2022-11-02 20:50:57,445 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166960686] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:50:57,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [680692727] [2022-11-02 20:50:57,446 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:50:57,446 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:50:57,446 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceb71b8d-0ebb-469a-abfc-cdc6c8b2ff10/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:50:57,447 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceb71b8d-0ebb-469a-abfc-cdc6c8b2ff10/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:50:57,473 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceb71b8d-0ebb-469a-abfc-cdc6c8b2ff10/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-02 20:50:57,523 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 20:50:57,523 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:50:57,524 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-02 20:50:57,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:50:57,550 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:50:57,551 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:50:57,629 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:50:57,630 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [680692727] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:50:57,630 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:50:57,630 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-02 20:50:57,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193426364] [2022-11-02 20:50:57,630 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:50:57,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-02 20:50:57,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:50:57,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-02 20:50:57,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2022-11-02 20:50:57,633 INFO L87 Difference]: Start difference. First operand 237 states and 701 transitions. Second operand has 12 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 11 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:57,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:50:57,935 INFO L93 Difference]: Finished difference Result 763 states and 1997 transitions. [2022-11-02 20:50:57,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-02 20:50:57,936 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 11 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-02 20:50:57,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:50:57,943 INFO L225 Difference]: With dead ends: 763 [2022-11-02 20:50:57,943 INFO L226 Difference]: Without dead ends: 763 [2022-11-02 20:50:57,943 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2022-11-02 20:50:57,944 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 246 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:50:57,945 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [246 Valid, 12 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 20:50:57,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 763 states. [2022-11-02 20:50:57,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 763 to 341. [2022-11-02 20:50:57,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 328 states have (on average 3.399390243902439) internal successors, (1115), 340 states have internal predecessors, (1115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:57,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 1115 transitions. [2022-11-02 20:50:57,971 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 1115 transitions. Word has length 8 [2022-11-02 20:50:57,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:50:57,972 INFO L495 AbstractCegarLoop]: Abstraction has 341 states and 1115 transitions. [2022-11-02 20:50:57,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 11 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:57,972 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 1115 transitions. [2022-11-02 20:50:57,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-02 20:50:57,974 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:50:57,974 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1] [2022-11-02 20:50:58,015 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceb71b8d-0ebb-469a-abfc-cdc6c8b2ff10/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-02 20:50:58,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceb71b8d-0ebb-469a-abfc-cdc6c8b2ff10/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-02 20:50:58,191 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-11-02 20:50:58,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:50:58,191 INFO L85 PathProgramCache]: Analyzing trace with hash 432380611, now seen corresponding path program 2 times [2022-11-02 20:50:58,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:50:58,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565843229] [2022-11-02 20:50:58,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:50:58,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:50:58,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:50:58,268 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:50:58,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:50:58,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565843229] [2022-11-02 20:50:58,269 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565843229] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:50:58,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1751952984] [2022-11-02 20:50:58,269 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:50:58,269 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:50:58,270 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceb71b8d-0ebb-469a-abfc-cdc6c8b2ff10/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:50:58,271 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceb71b8d-0ebb-469a-abfc-cdc6c8b2ff10/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:50:58,292 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceb71b8d-0ebb-469a-abfc-cdc6c8b2ff10/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-02 20:50:58,335 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-02 20:50:58,335 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:50:58,336 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 20:50:58,336 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:50:58,357 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-02 20:50:58,357 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:50:58,357 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1751952984] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:50:58,357 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:50:58,357 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [6] total 7 [2022-11-02 20:50:58,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943224585] [2022-11-02 20:50:58,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:50:58,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:50:58,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:50:58,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:50:58,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:50:58,364 INFO L87 Difference]: Start difference. First operand 341 states and 1115 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:58,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:50:58,389 INFO L93 Difference]: Finished difference Result 311 states and 924 transitions. [2022-11-02 20:50:58,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:50:58,389 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 8 [2022-11-02 20:50:58,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:50:58,391 INFO L225 Difference]: With dead ends: 311 [2022-11-02 20:50:58,391 INFO L226 Difference]: Without dead ends: 311 [2022-11-02 20:50:58,392 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:50:58,393 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 16 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:50:58,394 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 2 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:50:58,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2022-11-02 20:50:58,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 247. [2022-11-02 20:50:58,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 238 states have (on average 2.9747899159663866) internal successors, (708), 246 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:58,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 708 transitions. [2022-11-02 20:50:58,403 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 708 transitions. Word has length 8 [2022-11-02 20:50:58,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:50:58,403 INFO L495 AbstractCegarLoop]: Abstraction has 247 states and 708 transitions. [2022-11-02 20:50:58,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:58,403 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 708 transitions. [2022-11-02 20:50:58,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-02 20:50:58,405 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:50:58,405 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:50:58,447 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceb71b8d-0ebb-469a-abfc-cdc6c8b2ff10/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-02 20:50:58,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceb71b8d-0ebb-469a-abfc-cdc6c8b2ff10/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:50:58,630 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-11-02 20:50:58,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:50:58,631 INFO L85 PathProgramCache]: Analyzing trace with hash 432015757, now seen corresponding path program 1 times [2022-11-02 20:50:58,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:50:58,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497430821] [2022-11-02 20:50:58,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:50:58,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:50:58,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:50:58,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:50:58,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:50:58,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497430821] [2022-11-02 20:50:58,667 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497430821] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:50:58,667 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:50:58,667 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:50:58,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122144625] [2022-11-02 20:50:58,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:50:58,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:50:58,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:50:58,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:50:58,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:50:58,669 INFO L87 Difference]: Start difference. First operand 247 states and 708 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:58,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:50:58,714 INFO L93 Difference]: Finished difference Result 338 states and 968 transitions. [2022-11-02 20:50:58,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:50:58,715 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-02 20:50:58,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:50:58,717 INFO L225 Difference]: With dead ends: 338 [2022-11-02 20:50:58,717 INFO L226 Difference]: Without dead ends: 338 [2022-11-02 20:50:58,717 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:50:58,719 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 12 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:50:58,720 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 4 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:50:58,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2022-11-02 20:50:58,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 295. [2022-11-02 20:50:58,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 286 states have (on average 3.097902097902098) internal successors, (886), 294 states have internal predecessors, (886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:58,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 886 transitions. [2022-11-02 20:50:58,731 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 886 transitions. Word has length 8 [2022-11-02 20:50:58,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:50:58,732 INFO L495 AbstractCegarLoop]: Abstraction has 295 states and 886 transitions. [2022-11-02 20:50:58,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:58,732 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 886 transitions. [2022-11-02 20:50:58,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-02 20:50:58,738 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:50:58,739 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:50:58,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-02 20:50:58,739 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-11-02 20:50:58,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:50:58,740 INFO L85 PathProgramCache]: Analyzing trace with hash -1105336799, now seen corresponding path program 1 times [2022-11-02 20:50:58,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:50:58,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413817484] [2022-11-02 20:50:58,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:50:58,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:50:58,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:50:58,817 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:50:58,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:50:58,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413817484] [2022-11-02 20:50:58,817 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413817484] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:50:58,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [654371759] [2022-11-02 20:50:58,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:50:58,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:50:58,818 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceb71b8d-0ebb-469a-abfc-cdc6c8b2ff10/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:50:58,819 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceb71b8d-0ebb-469a-abfc-cdc6c8b2ff10/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:50:58,834 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceb71b8d-0ebb-469a-abfc-cdc6c8b2ff10/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-02 20:50:58,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:50:58,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 20:50:58,888 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:50:58,903 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:50:58,904 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:50:58,923 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:50:58,923 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [654371759] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:50:58,923 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:50:58,923 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-11-02 20:50:58,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88817697] [2022-11-02 20:50:58,924 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:50:58,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:50:58,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:50:58,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:50:58,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:50:58,925 INFO L87 Difference]: Start difference. First operand 295 states and 886 transitions. Second operand has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:59,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:50:59,074 INFO L93 Difference]: Finished difference Result 611 states and 1886 transitions. [2022-11-02 20:50:59,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:50:59,075 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-02 20:50:59,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:50:59,082 INFO L225 Difference]: With dead ends: 611 [2022-11-02 20:50:59,082 INFO L226 Difference]: Without dead ends: 611 [2022-11-02 20:50:59,082 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:50:59,083 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 101 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:50:59,085 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 5 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:50:59,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 611 states. [2022-11-02 20:50:59,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 611 to 427. [2022-11-02 20:50:59,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 427 states, 418 states have (on average 3.6196172248803826) internal successors, (1513), 426 states have internal predecessors, (1513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:59,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 1513 transitions. [2022-11-02 20:50:59,107 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 1513 transitions. Word has length 10 [2022-11-02 20:50:59,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:50:59,107 INFO L495 AbstractCegarLoop]: Abstraction has 427 states and 1513 transitions. [2022-11-02 20:50:59,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:59,108 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 1513 transitions. [2022-11-02 20:50:59,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-02 20:50:59,109 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:50:59,109 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:50:59,146 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceb71b8d-0ebb-469a-abfc-cdc6c8b2ff10/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-02 20:50:59,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceb71b8d-0ebb-469a-abfc-cdc6c8b2ff10/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-02 20:50:59,327 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-11-02 20:50:59,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:50:59,327 INFO L85 PathProgramCache]: Analyzing trace with hash -1105336798, now seen corresponding path program 1 times [2022-11-02 20:50:59,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:50:59,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100915769] [2022-11-02 20:50:59,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:50:59,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:50:59,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:50:59,408 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:50:59,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:50:59,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100915769] [2022-11-02 20:50:59,409 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100915769] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:50:59,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [459554782] [2022-11-02 20:50:59,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:50:59,409 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:50:59,409 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceb71b8d-0ebb-469a-abfc-cdc6c8b2ff10/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:50:59,411 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceb71b8d-0ebb-469a-abfc-cdc6c8b2ff10/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:50:59,412 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceb71b8d-0ebb-469a-abfc-cdc6c8b2ff10/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-02 20:50:59,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:50:59,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 20:50:59,542 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:50:59,553 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:50:59,554 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:50:59,554 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [459554782] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:50:59,554 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:50:59,554 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2022-11-02 20:50:59,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488760290] [2022-11-02 20:50:59,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:50:59,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:50:59,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:50:59,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:50:59,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:50:59,557 INFO L87 Difference]: Start difference. First operand 427 states and 1513 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:59,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:50:59,634 INFO L93 Difference]: Finished difference Result 442 states and 1362 transitions. [2022-11-02 20:50:59,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:50:59,635 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 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 10 [2022-11-02 20:50:59,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:50:59,639 INFO L225 Difference]: With dead ends: 442 [2022-11-02 20:50:59,639 INFO L226 Difference]: Without dead ends: 442 [2022-11-02 20:50:59,648 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:50:59,649 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 24 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:50:59,649 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 6 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:50:59,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2022-11-02 20:50:59,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 387. [2022-11-02 20:50:59,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 380 states have (on average 3.281578947368421) internal successors, (1247), 386 states have internal predecessors, (1247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:59,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 1247 transitions. [2022-11-02 20:50:59,678 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 1247 transitions. Word has length 10 [2022-11-02 20:50:59,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:50:59,679 INFO L495 AbstractCegarLoop]: Abstraction has 387 states and 1247 transitions. [2022-11-02 20:50:59,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:59,679 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 1247 transitions. [2022-11-02 20:50:59,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-02 20:50:59,680 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:50:59,680 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:50:59,728 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceb71b8d-0ebb-469a-abfc-cdc6c8b2ff10/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-02 20:50:59,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceb71b8d-0ebb-469a-abfc-cdc6c8b2ff10/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-02 20:50:59,907 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-11-02 20:50:59,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:50:59,907 INFO L85 PathProgramCache]: Analyzing trace with hash -1475904866, now seen corresponding path program 1 times [2022-11-02 20:50:59,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:50:59,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285967167] [2022-11-02 20:50:59,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:50:59,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:50:59,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:51:00,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:51:00,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:51:00,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285967167] [2022-11-02 20:51:00,050 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285967167] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:51:00,050 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:51:00,050 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-02 20:51:00,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948168829] [2022-11-02 20:51:00,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:51:00,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:51:00,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:51:00,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:51:00,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:51:00,052 INFO L87 Difference]: Start difference. First operand 387 states and 1247 transitions. Second operand has 3 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:51:00,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:51:00,084 INFO L93 Difference]: Finished difference Result 386 states and 1246 transitions. [2022-11-02 20:51:00,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:51:00,085 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-02 20:51:00,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:51:00,088 INFO L225 Difference]: With dead ends: 386 [2022-11-02 20:51:00,088 INFO L226 Difference]: Without dead ends: 386 [2022-11-02 20:51:00,089 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:51:00,089 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 6 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:51:00,090 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 2 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:51:00,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2022-11-02 20:51:00,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 386. [2022-11-02 20:51:00,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 380 states have (on average 3.278947368421053) internal successors, (1246), 385 states have internal predecessors, (1246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:51:00,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 1246 transitions. [2022-11-02 20:51:00,106 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 1246 transitions. Word has length 13 [2022-11-02 20:51:00,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:51:00,106 INFO L495 AbstractCegarLoop]: Abstraction has 386 states and 1246 transitions. [2022-11-02 20:51:00,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:51:00,107 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 1246 transitions. [2022-11-02 20:51:00,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-02 20:51:00,108 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:51:00,108 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:51:00,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-02 20:51:00,109 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-11-02 20:51:00,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:51:00,111 INFO L85 PathProgramCache]: Analyzing trace with hash -1475904913, now seen corresponding path program 1 times [2022-11-02 20:51:00,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:51:00,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739963342] [2022-11-02 20:51:00,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:51:00,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:51:00,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:51:00,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:51:00,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:51:00,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739963342] [2022-11-02 20:51:00,242 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739963342] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:51:00,242 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:51:00,242 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-02 20:51:00,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453871276] [2022-11-02 20:51:00,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:51:00,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:51:00,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:51:00,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:51:00,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:51:00,244 INFO L87 Difference]: Start difference. First operand 386 states and 1246 transitions. Second operand has 3 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:51:00,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:51:00,274 INFO L93 Difference]: Finished difference Result 385 states and 1245 transitions. [2022-11-02 20:51:00,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:51:00,275 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-02 20:51:00,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:51:00,277 INFO L225 Difference]: With dead ends: 385 [2022-11-02 20:51:00,277 INFO L226 Difference]: Without dead ends: 330 [2022-11-02 20:51:00,278 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:51:00,279 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 5 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:51:00,279 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 2 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:51:00,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2022-11-02 20:51:00,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 330. [2022-11-02 20:51:00,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 330 states, 325 states have (on average 3.043076923076923) internal successors, (989), 329 states have internal predecessors, (989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:51:00,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 989 transitions. [2022-11-02 20:51:00,292 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 989 transitions. Word has length 13 [2022-11-02 20:51:00,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:51:00,293 INFO L495 AbstractCegarLoop]: Abstraction has 330 states and 989 transitions. [2022-11-02 20:51:00,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:51:00,293 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 989 transitions. [2022-11-02 20:51:00,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-02 20:51:00,294 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:51:00,294 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1] [2022-11-02 20:51:00,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-02 20:51:00,295 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-11-02 20:51:00,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:51:00,296 INFO L85 PathProgramCache]: Analyzing trace with hash 1116894674, now seen corresponding path program 3 times [2022-11-02 20:51:00,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:51:00,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265264670] [2022-11-02 20:51:00,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:51:00,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:51:00,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:51:00,575 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:51:00,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:51:00,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265264670] [2022-11-02 20:51:00,576 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265264670] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:51:00,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1565108093] [2022-11-02 20:51:00,576 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-02 20:51:00,576 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:51:00,577 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceb71b8d-0ebb-469a-abfc-cdc6c8b2ff10/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:51:00,578 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceb71b8d-0ebb-469a-abfc-cdc6c8b2ff10/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:51:00,602 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceb71b8d-0ebb-469a-abfc-cdc6c8b2ff10/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-02 20:51:00,676 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-11-02 20:51:00,676 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:51:00,678 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-02 20:51:00,679 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:51:00,733 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:51:00,733 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:51:00,991 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:51:00,991 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1565108093] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:51:00,991 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:51:00,991 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2022-11-02 20:51:00,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320147178] [2022-11-02 20:51:00,992 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:51:00,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-02 20:51:00,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:51:00,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-02 20:51:00,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2022-11-02 20:51:00,994 INFO L87 Difference]: Start difference. First operand 330 states and 989 transitions. Second operand has 25 states, 24 states have (on average 1.3333333333333333) internal successors, (32), 24 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:51:01,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:51:01,547 INFO L93 Difference]: Finished difference Result 1440 states and 3853 transitions. [2022-11-02 20:51:01,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-02 20:51:01,548 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 1.3333333333333333) internal successors, (32), 24 states have internal predecessors, (32), 0 states have call successors, (0), 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 14 [2022-11-02 20:51:01,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:51:01,556 INFO L225 Difference]: With dead ends: 1440 [2022-11-02 20:51:01,556 INFO L226 Difference]: Without dead ends: 1432 [2022-11-02 20:51:01,557 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2022-11-02 20:51:01,557 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 353 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 353 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:51:01,558 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [353 Valid, 25 Invalid, 391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 20:51:01,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1432 states. [2022-11-02 20:51:01,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1432 to 702. [2022-11-02 20:51:01,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 702 states, 697 states have (on average 3.0028694404591105) internal successors, (2093), 701 states have internal predecessors, (2093), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:51:01,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 702 states to 702 states and 2093 transitions. [2022-11-02 20:51:01,586 INFO L78 Accepts]: Start accepts. Automaton has 702 states and 2093 transitions. Word has length 14 [2022-11-02 20:51:01,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:51:01,587 INFO L495 AbstractCegarLoop]: Abstraction has 702 states and 2093 transitions. [2022-11-02 20:51:01,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 1.3333333333333333) internal successors, (32), 24 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:51:01,587 INFO L276 IsEmpty]: Start isEmpty. Operand 702 states and 2093 transitions. [2022-11-02 20:51:01,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-02 20:51:01,588 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:51:01,588 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:51:01,625 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceb71b8d-0ebb-469a-abfc-cdc6c8b2ff10/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-02 20:51:01,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceb71b8d-0ebb-469a-abfc-cdc6c8b2ff10/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:51:01,803 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-11-02 20:51:01,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:51:01,803 INFO L85 PathProgramCache]: Analyzing trace with hash 1923714445, now seen corresponding path program 2 times [2022-11-02 20:51:01,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:51:01,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353959051] [2022-11-02 20:51:01,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:51:01,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:51:01,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:51:01,910 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-02 20:51:01,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:51:01,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353959051] [2022-11-02 20:51:01,910 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353959051] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:51:01,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [116418282] [2022-11-02 20:51:01,911 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:51:01,911 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:51:01,911 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceb71b8d-0ebb-469a-abfc-cdc6c8b2ff10/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:51:01,912 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceb71b8d-0ebb-469a-abfc-cdc6c8b2ff10/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:51:01,942 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceb71b8d-0ebb-469a-abfc-cdc6c8b2ff10/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-02 20:51:01,995 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-02 20:51:01,995 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:51:01,997 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 20:51:01,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:51:02,026 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-02 20:51:02,026 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:51:02,027 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [116418282] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:51:02,027 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:51:02,027 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [6] total 7 [2022-11-02 20:51:02,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713608329] [2022-11-02 20:51:02,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:51:02,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:51:02,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:51:02,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:51:02,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:51:02,029 INFO L87 Difference]: Start difference. First operand 702 states and 2093 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:51:02,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:51:02,050 INFO L93 Difference]: Finished difference Result 650 states and 1878 transitions. [2022-11-02 20:51:02,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:51:02,051 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 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 16 [2022-11-02 20:51:02,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:51:02,054 INFO L225 Difference]: With dead ends: 650 [2022-11-02 20:51:02,054 INFO L226 Difference]: Without dead ends: 428 [2022-11-02 20:51:02,056 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:51:02,057 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 7 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:51:02,057 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 2 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:51:02,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2022-11-02 20:51:02,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 220. [2022-11-02 20:51:02,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 217 states have (on average 2.3686635944700463) internal successors, (514), 219 states have internal predecessors, (514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:51:02,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 514 transitions. [2022-11-02 20:51:02,067 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 514 transitions. Word has length 16 [2022-11-02 20:51:02,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:51:02,068 INFO L495 AbstractCegarLoop]: Abstraction has 220 states and 514 transitions. [2022-11-02 20:51:02,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:51:02,068 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 514 transitions. [2022-11-02 20:51:02,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-02 20:51:02,069 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:51:02,069 INFO L195 NwaCegarLoop]: trace histogram [22, 1, 1, 1, 1] [2022-11-02 20:51:02,100 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceb71b8d-0ebb-469a-abfc-cdc6c8b2ff10/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-02 20:51:02,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceb71b8d-0ebb-469a-abfc-cdc6c8b2ff10/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-02 20:51:02,283 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-11-02 20:51:02,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:51:02,283 INFO L85 PathProgramCache]: Analyzing trace with hash -558113710, now seen corresponding path program 4 times [2022-11-02 20:51:02,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:51:02,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090972657] [2022-11-02 20:51:02,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:51:02,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:51:02,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:51:02,922 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:51:02,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:51:02,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090972657] [2022-11-02 20:51:02,923 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090972657] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:51:02,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [536731087] [2022-11-02 20:51:02,923 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-02 20:51:02,923 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:51:02,923 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceb71b8d-0ebb-469a-abfc-cdc6c8b2ff10/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:51:02,924 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceb71b8d-0ebb-469a-abfc-cdc6c8b2ff10/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:51:02,955 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceb71b8d-0ebb-469a-abfc-cdc6c8b2ff10/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-02 20:51:03,044 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-02 20:51:03,045 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:51:03,047 INFO L263 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-02 20:51:03,049 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:51:03,136 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:51:03,136 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:51:04,143 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:51:04,144 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [536731087] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:51:04,144 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:51:04,144 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 47 [2022-11-02 20:51:04,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569212633] [2022-11-02 20:51:04,144 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:51:04,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-11-02 20:51:04,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:51:04,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-11-02 20:51:04,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2022-11-02 20:51:04,147 INFO L87 Difference]: Start difference. First operand 220 states and 514 transitions. Second operand has 49 states, 48 states have (on average 1.1666666666666667) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:51:05,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:51:05,359 INFO L93 Difference]: Finished difference Result 1312 states and 3118 transitions. [2022-11-02 20:51:05,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-11-02 20:51:05,360 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 48 states have (on average 1.1666666666666667) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 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 26 [2022-11-02 20:51:05,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:51:05,366 INFO L225 Difference]: With dead ends: 1312 [2022-11-02 20:51:05,366 INFO L226 Difference]: Without dead ends: 984 [2022-11-02 20:51:05,367 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2022-11-02 20:51:05,367 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 1165 mSDsluCounter, 595 mSDsCounter, 0 mSdLazyCounter, 728 mSolverCounterSat, 222 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1165 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 950 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 222 IncrementalHoareTripleChecker+Valid, 728 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-02 20:51:05,368 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1165 Valid, 49 Invalid, 950 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [222 Valid, 728 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-02 20:51:05,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 984 states. [2022-11-02 20:51:05,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 984 to 412. [2022-11-02 20:51:05,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 412 states, 409 states have (on average 2.371638141809291) internal successors, (970), 411 states have internal predecessors, (970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:51:05,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 970 transitions. [2022-11-02 20:51:05,386 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 970 transitions. Word has length 26 [2022-11-02 20:51:05,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:51:05,387 INFO L495 AbstractCegarLoop]: Abstraction has 412 states and 970 transitions. [2022-11-02 20:51:05,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 48 states have (on average 1.1666666666666667) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:51:05,387 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 970 transitions. [2022-11-02 20:51:05,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-11-02 20:51:05,389 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:51:05,389 INFO L195 NwaCegarLoop]: trace histogram [46, 1, 1, 1, 1] [2022-11-02 20:51:05,432 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceb71b8d-0ebb-469a-abfc-cdc6c8b2ff10/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-02 20:51:05,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceb71b8d-0ebb-469a-abfc-cdc6c8b2ff10/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:51:05,606 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-11-02 20:51:05,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:51:05,607 INFO L85 PathProgramCache]: Analyzing trace with hash 1132292434, now seen corresponding path program 5 times [2022-11-02 20:51:05,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:51:05,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760923308] [2022-11-02 20:51:05,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:51:05,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:51:05,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:51:07,552 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:51:07,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:51:07,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760923308] [2022-11-02 20:51:07,553 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760923308] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:51:07,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [268070430] [2022-11-02 20:51:07,553 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-02 20:51:07,554 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:51:07,554 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceb71b8d-0ebb-469a-abfc-cdc6c8b2ff10/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:51:07,559 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceb71b8d-0ebb-469a-abfc-cdc6c8b2ff10/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:51:07,565 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceb71b8d-0ebb-469a-abfc-cdc6c8b2ff10/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-02 20:51:07,725 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2022-11-02 20:51:07,725 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:51:07,729 INFO L263 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 49 conjunts are in the unsatisfiable core [2022-11-02 20:51:07,732 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:51:07,858 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:51:07,858 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:51:11,132 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:51:11,133 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [268070430] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:51:11,133 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:51:11,133 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47, 47] total 94 [2022-11-02 20:51:11,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337257515] [2022-11-02 20:51:11,133 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:51:11,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2022-11-02 20:51:11,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:51:11,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2022-11-02 20:51:11,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2022-11-02 20:51:11,140 INFO L87 Difference]: Start difference. First operand 412 states and 970 transitions. Second operand has 96 states, 95 states have (on average 1.0526315789473684) internal successors, (100), 95 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:51:15,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:51:15,313 INFO L93 Difference]: Finished difference Result 3760 states and 9094 transitions. [2022-11-02 20:51:15,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2022-11-02 20:51:15,313 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 95 states have (on average 1.0526315789473684) internal successors, (100), 95 states have internal predecessors, (100), 0 states have call successors, (0), 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 50 [2022-11-02 20:51:15,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:51:15,329 INFO L225 Difference]: With dead ends: 3760 [2022-11-02 20:51:15,329 INFO L226 Difference]: Without dead ends: 3096 [2022-11-02 20:51:15,332 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2022-11-02 20:51:15,332 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 2377 mSDsluCounter, 977 mSDsCounter, 0 mSdLazyCounter, 1235 mSolverCounterSat, 459 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2377 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 1694 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 459 IncrementalHoareTripleChecker+Valid, 1235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-02 20:51:15,333 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2377 Valid, 96 Invalid, 1694 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [459 Valid, 1235 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-02 20:51:15,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3096 states. [2022-11-02 20:51:15,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3096 to 796. [2022-11-02 20:51:15,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 796 states, 793 states have (on average 2.373266078184111) internal successors, (1882), 795 states have internal predecessors, (1882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:51:15,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 796 states to 796 states and 1882 transitions. [2022-11-02 20:51:15,381 INFO L78 Accepts]: Start accepts. Automaton has 796 states and 1882 transitions. Word has length 50 [2022-11-02 20:51:15,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:51:15,382 INFO L495 AbstractCegarLoop]: Abstraction has 796 states and 1882 transitions. [2022-11-02 20:51:15,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 95 states have (on average 1.0526315789473684) internal successors, (100), 95 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:51:15,382 INFO L276 IsEmpty]: Start isEmpty. Operand 796 states and 1882 transitions. [2022-11-02 20:51:15,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-02 20:51:15,385 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:51:15,385 INFO L195 NwaCegarLoop]: trace histogram [94, 1, 1, 1, 1] [2022-11-02 20:51:15,426 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceb71b8d-0ebb-469a-abfc-cdc6c8b2ff10/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-02 20:51:15,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceb71b8d-0ebb-469a-abfc-cdc6c8b2ff10/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-02 20:51:15,610 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-11-02 20:51:15,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:51:15,611 INFO L85 PathProgramCache]: Analyzing trace with hash -1740930222, now seen corresponding path program 6 times [2022-11-02 20:51:15,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:51:15,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874881032] [2022-11-02 20:51:15,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:51:15,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:51:15,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:51:22,266 INFO L134 CoverageAnalysis]: Checked inductivity of 4465 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:51:22,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:51:22,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874881032] [2022-11-02 20:51:22,267 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874881032] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:51:22,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [227493916] [2022-11-02 20:51:22,267 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-02 20:51:22,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:51:22,268 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceb71b8d-0ebb-469a-abfc-cdc6c8b2ff10/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:51:22,271 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceb71b8d-0ebb-469a-abfc-cdc6c8b2ff10/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:51:22,295 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceb71b8d-0ebb-469a-abfc-cdc6c8b2ff10/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-02 20:51:22,640 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 48 check-sat command(s) [2022-11-02 20:51:22,640 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:51:22,648 INFO L263 TraceCheckSpWp]: Trace formula consists of 916 conjuncts, 97 conjunts are in the unsatisfiable core [2022-11-02 20:51:22,655 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:51:22,916 INFO L134 CoverageAnalysis]: Checked inductivity of 4465 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:51:22,916 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:51:33,972 INFO L134 CoverageAnalysis]: Checked inductivity of 4465 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:51:33,972 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [227493916] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:51:33,972 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:51:33,972 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 95, 95] total 190 [2022-11-02 20:51:33,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981952435] [2022-11-02 20:51:33,973 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:51:33,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 192 states [2022-11-02 20:51:33,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:51:33,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 192 interpolants. [2022-11-02 20:51:33,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18336, Invalid=18336, Unknown=0, NotChecked=0, Total=36672 [2022-11-02 20:51:33,985 INFO L87 Difference]: Start difference. First operand 796 states and 1882 transitions. Second operand has 192 states, 191 states have (on average 1.0261780104712042) internal successors, (196), 191 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:52:00,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:52:00,755 INFO L93 Difference]: Finished difference Result 12112 states and 29686 transitions. [2022-11-02 20:52:00,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2022-11-02 20:52:00,758 INFO L78 Accepts]: Start accepts. Automaton has has 192 states, 191 states have (on average 1.0261780104712042) internal successors, (196), 191 states have internal predecessors, (196), 0 states have call successors, (0), 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 98 [2022-11-02 20:52:00,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:52:00,814 INFO L225 Difference]: With dead ends: 12112 [2022-11-02 20:52:00,814 INFO L226 Difference]: Without dead ends: 10776 [2022-11-02 20:52:00,818 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 190 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.6s TimeCoverageRelationStatistics Valid=18336, Invalid=18336, Unknown=0, NotChecked=0, Total=36672 [2022-11-02 20:52:00,818 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 7162 mSDsluCounter, 2330 mSDsCounter, 0 mSdLazyCounter, 2819 mSolverCounterSat, 1285 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7162 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 4104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1285 IncrementalHoareTripleChecker+Valid, 2819 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:52:00,819 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7162 Valid, 192 Invalid, 4104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1285 Valid, 2819 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-11-02 20:52:00,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10776 states. [2022-11-02 20:52:00,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10776 to 1564. [2022-11-02 20:52:00,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1564 states, 1561 states have (on average 2.3741191543882127) internal successors, (3706), 1563 states have internal predecessors, (3706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:52:00,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1564 states to 1564 states and 3706 transitions. [2022-11-02 20:52:00,949 INFO L78 Accepts]: Start accepts. Automaton has 1564 states and 3706 transitions. Word has length 98 [2022-11-02 20:52:00,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:52:00,950 INFO L495 AbstractCegarLoop]: Abstraction has 1564 states and 3706 transitions. [2022-11-02 20:52:00,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 192 states, 191 states have (on average 1.0261780104712042) internal successors, (196), 191 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:52:00,950 INFO L276 IsEmpty]: Start isEmpty. Operand 1564 states and 3706 transitions. [2022-11-02 20:52:00,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2022-11-02 20:52:00,958 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:52:00,959 INFO L195 NwaCegarLoop]: trace histogram [190, 1, 1, 1, 1] [2022-11-02 20:52:00,994 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceb71b8d-0ebb-469a-abfc-cdc6c8b2ff10/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-02 20:52:01,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceb71b8d-0ebb-469a-abfc-cdc6c8b2ff10/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-02 20:52:01,178 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-11-02 20:52:01,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:52:01,179 INFO L85 PathProgramCache]: Analyzing trace with hash -1163675822, now seen corresponding path program 7 times [2022-11-02 20:52:01,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:52:01,179 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694787081] [2022-11-02 20:52:01,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:52:01,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:52:01,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:52:24,084 INFO L134 CoverageAnalysis]: Checked inductivity of 18145 backedges. 0 proven. 18145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:52:24,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:52:24,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694787081] [2022-11-02 20:52:24,085 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694787081] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:52:24,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1118924928] [2022-11-02 20:52:24,085 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-02 20:52:24,085 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:52:24,085 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceb71b8d-0ebb-469a-abfc-cdc6c8b2ff10/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:52:24,088 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceb71b8d-0ebb-469a-abfc-cdc6c8b2ff10/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:52:24,090 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceb71b8d-0ebb-469a-abfc-cdc6c8b2ff10/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-02 20:52:24,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:52:24,443 INFO L263 TraceCheckSpWp]: Trace formula consists of 1780 conjuncts, 193 conjunts are in the unsatisfiable core [2022-11-02 20:52:24,456 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:52:24,862 INFO L134 CoverageAnalysis]: Checked inductivity of 18145 backedges. 0 proven. 18145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:52:24,863 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:53:09,401 INFO L134 CoverageAnalysis]: Checked inductivity of 18145 backedges. 0 proven. 18145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:53:09,402 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1118924928] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:53:09,402 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:53:09,402 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [191, 191, 191] total 382 [2022-11-02 20:53:09,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568129613] [2022-11-02 20:53:09,403 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:53:09,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 384 states [2022-11-02 20:53:09,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:53:09,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 384 interpolants. [2022-11-02 20:53:09,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73536, Invalid=73536, Unknown=0, NotChecked=0, Total=147072 [2022-11-02 20:53:09,436 INFO L87 Difference]: Start difference. First operand 1564 states and 3706 transitions. Second operand has 384 states, 383 states have (on average 1.0130548302872062) internal successors, (388), 383 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)