./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread/stack_longer-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44b3c563-cfe0-4e7b-b220-a9331818d993/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44b3c563-cfe0-4e7b-b220-a9331818d993/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_44b3c563-cfe0-4e7b-b220-a9331818d993/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44b3c563-cfe0-4e7b-b220-a9331818d993/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/stack_longer-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44b3c563-cfe0-4e7b-b220-a9331818d993/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_44b3c563-cfe0-4e7b-b220-a9331818d993/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 4351dece6a672e511bbcb86915e62fc8a7361763ad7ab88f2e640b2d00ea50a7 --- 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 20:56:34,227 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:56:34,229 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:56:34,257 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:56:34,257 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:56:34,258 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:56:34,260 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:56:34,262 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:56:34,265 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:56:34,266 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:56:34,267 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:56:34,269 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:56:34,269 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:56:34,270 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:56:34,271 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:56:34,273 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:56:34,274 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:56:34,276 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:56:34,279 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:56:34,288 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:56:34,292 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:56:34,296 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:56:34,297 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:56:34,298 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:56:34,309 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:56:34,309 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:56:34,309 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:56:34,310 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:56:34,311 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:56:34,312 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:56:34,312 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:56:34,313 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:56:34,313 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:56:34,314 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:56:34,315 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:56:34,315 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:56:34,316 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:56:34,316 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:56:34,316 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:56:34,317 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:56:34,318 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:56:34,321 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44b3c563-cfe0-4e7b-b220-a9331818d993/bin/uautomizer-Dbtcem3rbc/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-02 20:56:34,356 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:56:34,357 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:56:34,357 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:56:34,357 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:56:34,358 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:56:34,358 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:56:34,362 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:56:34,363 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:56:34,363 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:56:34,363 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:56:34,364 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 20:56:34,365 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-02 20:56:34,365 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:56:34,365 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 20:56:34,365 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:56:34,365 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:56:34,366 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:56:34,366 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:56:34,366 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-02 20:56:34,366 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 20:56:34,366 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:56:34,367 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:56:34,367 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:56:34,367 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:56:34,368 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:56:34,368 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:56:34,370 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:56:34,370 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:56:34,370 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:56:34,371 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:56:34,371 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:56:34,371 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:56:34,371 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:56:34,372 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_44b3c563-cfe0-4e7b-b220-a9331818d993/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44b3c563-cfe0-4e7b-b220-a9331818d993/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4351dece6a672e511bbcb86915e62fc8a7361763ad7ab88f2e640b2d00ea50a7 [2022-11-02 20:56:34,702 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:56:34,728 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:56:34,732 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:56:34,733 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:56:34,734 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:56:34,736 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44b3c563-cfe0-4e7b-b220-a9331818d993/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/pthread/stack_longer-1.i [2022-11-02 20:56:34,813 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44b3c563-cfe0-4e7b-b220-a9331818d993/bin/uautomizer-Dbtcem3rbc/data/dd59696eb/f31fee306eed4412966f49c464c79161/FLAG462879151 [2022-11-02 20:56:35,381 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:56:35,382 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44b3c563-cfe0-4e7b-b220-a9331818d993/sv-benchmarks/c/pthread/stack_longer-1.i [2022-11-02 20:56:35,402 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44b3c563-cfe0-4e7b-b220-a9331818d993/bin/uautomizer-Dbtcem3rbc/data/dd59696eb/f31fee306eed4412966f49c464c79161/FLAG462879151 [2022-11-02 20:56:35,666 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44b3c563-cfe0-4e7b-b220-a9331818d993/bin/uautomizer-Dbtcem3rbc/data/dd59696eb/f31fee306eed4412966f49c464c79161 [2022-11-02 20:56:35,668 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:56:35,670 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:56:35,679 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:56:35,680 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:56:35,683 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:56:35,684 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:56:35" (1/1) ... [2022-11-02 20:56:35,685 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b29aaff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:56:35, skipping insertion in model container [2022-11-02 20:56:35,685 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:56:35" (1/1) ... [2022-11-02 20:56:35,694 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:56:35,758 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:56:36,254 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_44b3c563-cfe0-4e7b-b220-a9331818d993/sv-benchmarks/c/pthread/stack_longer-1.i[41527,41540] [2022-11-02 20:56:36,312 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:56:36,326 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:56:36,386 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_44b3c563-cfe0-4e7b-b220-a9331818d993/sv-benchmarks/c/pthread/stack_longer-1.i[41527,41540] [2022-11-02 20:56:36,413 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:56:36,464 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:56:36,465 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:56:36 WrapperNode [2022-11-02 20:56:36,465 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:56:36,466 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:56:36,466 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:56:36,466 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:56:36,474 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:56:36" (1/1) ... [2022-11-02 20:56:36,496 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:56:36" (1/1) ... [2022-11-02 20:56:36,542 INFO L138 Inliner]: procedures = 277, calls = 41, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 165 [2022-11-02 20:56:36,543 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:56:36,544 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:56:36,544 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:56:36,544 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:56:36,554 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:56:36" (1/1) ... [2022-11-02 20:56:36,554 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:56:36" (1/1) ... [2022-11-02 20:56:36,572 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:56:36" (1/1) ... [2022-11-02 20:56:36,573 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:56:36" (1/1) ... [2022-11-02 20:56:36,580 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:56:36" (1/1) ... [2022-11-02 20:56:36,594 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:56:36" (1/1) ... [2022-11-02 20:56:36,596 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:56:36" (1/1) ... [2022-11-02 20:56:36,598 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:56:36" (1/1) ... [2022-11-02 20:56:36,601 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:56:36,602 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:56:36,602 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:56:36,602 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:56:36,604 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:56:36" (1/1) ... [2022-11-02 20:56:36,614 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:56:36,626 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44b3c563-cfe0-4e7b-b220-a9331818d993/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:56:36,644 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44b3c563-cfe0-4e7b-b220-a9331818d993/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:56:36,662 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44b3c563-cfe0-4e7b-b220-a9331818d993/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:56:36,682 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2022-11-02 20:56:36,682 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2022-11-02 20:56:36,682 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2022-11-02 20:56:36,682 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2022-11-02 20:56:36,683 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 20:56:36,683 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 20:56:36,683 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-02 20:56:36,683 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-02 20:56:36,683 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-02 20:56:36,684 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 20:56:36,684 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 20:56:36,684 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:56:36,684 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:56:36,686 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 20:56:36,916 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:56:36,918 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:56:37,393 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:56:37,402 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:56:37,403 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-02 20:56:37,405 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:56:37 BoogieIcfgContainer [2022-11-02 20:56:37,405 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:56:37,407 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:56:37,407 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:56:37,418 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:56:37,418 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:56:35" (1/3) ... [2022-11-02 20:56:37,419 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f8bbdd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:56:37, skipping insertion in model container [2022-11-02 20:56:37,419 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:56:36" (2/3) ... [2022-11-02 20:56:37,420 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f8bbdd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:56:37, skipping insertion in model container [2022-11-02 20:56:37,420 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:56:37" (3/3) ... [2022-11-02 20:56:37,421 INFO L112 eAbstractionObserver]: Analyzing ICFG stack_longer-1.i [2022-11-02 20:56:37,430 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-02 20:56:37,452 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:56:37,453 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-11-02 20:56:37,453 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-02 20:56:37,592 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-02 20:56:37,626 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-02 20:56:37,641 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 192 places, 195 transitions, 406 flow [2022-11-02 20:56:37,644 INFO L112 LiptonReduction]: Starting Lipton reduction on Petri net that has 192 places, 195 transitions, 406 flow [2022-11-02 20:56:37,646 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 192 places, 195 transitions, 406 flow [2022-11-02 20:56:37,757 INFO L130 PetriNetUnfolder]: 10/193 cut-off events. [2022-11-02 20:56:37,759 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-02 20:56:37,768 INFO L83 FinitePrefix]: Finished finitePrefix Result has 202 conditions, 193 events. 10/193 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 506 event pairs, 0 based on Foata normal form. 0/175 useless extension candidates. Maximal degree in co-relation 149. Up to 3 conditions per place. [2022-11-02 20:56:37,776 INFO L118 LiptonReduction]: Number of co-enabled transitions 11596 [2022-11-02 20:56:43,717 INFO L133 LiptonReduction]: Checked pairs total: 15481 [2022-11-02 20:56:43,717 INFO L135 LiptonReduction]: Total number of compositions: 186 [2022-11-02 20:56:43,726 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 46 places, 45 transitions, 106 flow [2022-11-02 20:56:43,781 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 508 states, 484 states have (on average 2.822314049586777) internal successors, (1366), 507 states have internal predecessors, (1366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:43,801 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:56:43,813 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;@18a04791, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:56:43,815 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2022-11-02 20:56:43,819 INFO L276 IsEmpty]: Start isEmpty. Operand has 508 states, 484 states have (on average 2.822314049586777) internal successors, (1366), 507 states have internal predecessors, (1366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:43,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-02 20:56:43,828 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:56:43,829 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:56:43,830 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-02 20:56:43,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:43,838 INFO L85 PathProgramCache]: Analyzing trace with hash -371588990, now seen corresponding path program 1 times [2022-11-02 20:56:43,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:56:43,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114994623] [2022-11-02 20:56:43,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:43,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:56:44,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:44,122 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 20:56:44,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:56:44,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114994623] [2022-11-02 20:56:44,124 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114994623] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:56:44,124 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:56:44,125 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:56:44,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971514730] [2022-11-02 20:56:44,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:56:44,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-02 20:56:44,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:56:44,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-02 20:56:44,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-02 20:56:44,156 INFO L87 Difference]: Start difference. First operand has 508 states, 484 states have (on average 2.822314049586777) internal successors, (1366), 507 states have internal predecessors, (1366), 0 states have call successors, (0), 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 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:44,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:56:44,250 INFO L93 Difference]: Finished difference Result 508 states and 1302 transitions. [2022-11-02 20:56:44,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-02 20:56:44,256 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-02 20:56:44,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:56:44,270 INFO L225 Difference]: With dead ends: 508 [2022-11-02 20:56:44,275 INFO L226 Difference]: Without dead ends: 508 [2022-11-02 20:56:44,276 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-02 20:56:44,280 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:56:44,285 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:56:44,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 508 states. [2022-11-02 20:56:44,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 508 to 508. [2022-11-02 20:56:44,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 508 states, 484 states have (on average 2.690082644628099) internal successors, (1302), 507 states have internal predecessors, (1302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:44,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 508 states to 508 states and 1302 transitions. [2022-11-02 20:56:44,350 INFO L78 Accepts]: Start accepts. Automaton has 508 states and 1302 transitions. Word has length 7 [2022-11-02 20:56:44,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:56:44,351 INFO L495 AbstractCegarLoop]: Abstraction has 508 states and 1302 transitions. [2022-11-02 20:56:44,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:44,352 INFO L276 IsEmpty]: Start isEmpty. Operand 508 states and 1302 transitions. [2022-11-02 20:56:44,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-02 20:56:44,353 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:56:44,353 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:56:44,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:56:44,354 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-02 20:56:44,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:44,355 INFO L85 PathProgramCache]: Analyzing trace with hash 1365481780, now seen corresponding path program 1 times [2022-11-02 20:56:44,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:56:44,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30908776] [2022-11-02 20:56:44,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:44,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:56:44,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:44,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:56:44,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:56:44,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30908776] [2022-11-02 20:56:44,543 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30908776] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:56:44,543 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:56:44,544 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:56:44,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333749341] [2022-11-02 20:56:44,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:56:44,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:56:44,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:56:44,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:56:44,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:56:44,551 INFO L87 Difference]: Start difference. First operand 508 states and 1302 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 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 20:56:44,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:56:44,669 INFO L93 Difference]: Finished difference Result 632 states and 1596 transitions. [2022-11-02 20:56:44,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:56:44,671 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 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 20:56:44,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:56:44,677 INFO L225 Difference]: With dead ends: 632 [2022-11-02 20:56:44,683 INFO L226 Difference]: Without dead ends: 628 [2022-11-02 20:56:44,684 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 20:56:44,685 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 16 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:56:44,686 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 4 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:56:44,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2022-11-02 20:56:44,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 614. [2022-11-02 20:56:44,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 614 states, 590 states have (on average 2.664406779661017) internal successors, (1572), 613 states have internal predecessors, (1572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:44,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 614 states to 614 states and 1572 transitions. [2022-11-02 20:56:44,735 INFO L78 Accepts]: Start accepts. Automaton has 614 states and 1572 transitions. Word has length 8 [2022-11-02 20:56:44,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:56:44,735 INFO L495 AbstractCegarLoop]: Abstraction has 614 states and 1572 transitions. [2022-11-02 20:56:44,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 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 20:56:44,738 INFO L276 IsEmpty]: Start isEmpty. Operand 614 states and 1572 transitions. [2022-11-02 20:56:44,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-02 20:56:44,740 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:56:44,740 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:56:44,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 20:56:44,740 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-02 20:56:44,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:44,741 INFO L85 PathProgramCache]: Analyzing trace with hash 1365577205, now seen corresponding path program 1 times [2022-11-02 20:56:44,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:56:44,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054589500] [2022-11-02 20:56:44,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:44,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:56:44,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:44,820 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 20:56:44,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:56:44,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054589500] [2022-11-02 20:56:44,821 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054589500] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:56:44,821 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:56:44,821 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:56:44,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192776934] [2022-11-02 20:56:44,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:56:44,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:56:44,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:56:44,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:56:44,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:56:44,823 INFO L87 Difference]: Start difference. First operand 614 states and 1572 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 20:56:44,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:56:44,962 INFO L93 Difference]: Finished difference Result 1012 states and 2605 transitions. [2022-11-02 20:56:44,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:56:44,963 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 20:56:44,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:56:44,969 INFO L225 Difference]: With dead ends: 1012 [2022-11-02 20:56:44,969 INFO L226 Difference]: Without dead ends: 1012 [2022-11-02 20:56:44,970 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 20:56:44,971 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 28 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:56:44,971 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 5 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:56:44,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1012 states. [2022-11-02 20:56:45,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1012 to 952. [2022-11-02 20:56:45,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 952 states, 928 states have (on average 2.7079741379310347) internal successors, (2513), 951 states have internal predecessors, (2513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:45,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 952 states to 952 states and 2513 transitions. [2022-11-02 20:56:45,041 INFO L78 Accepts]: Start accepts. Automaton has 952 states and 2513 transitions. Word has length 8 [2022-11-02 20:56:45,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:56:45,041 INFO L495 AbstractCegarLoop]: Abstraction has 952 states and 2513 transitions. [2022-11-02 20:56:45,042 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 20:56:45,042 INFO L276 IsEmpty]: Start isEmpty. Operand 952 states and 2513 transitions. [2022-11-02 20:56:45,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-02 20:56:45,047 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:56:45,047 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:56:45,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 20:56:45,048 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-02 20:56:45,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:45,049 INFO L85 PathProgramCache]: Analyzing trace with hash -16369736, now seen corresponding path program 1 times [2022-11-02 20:56:45,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:56:45,051 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846417515] [2022-11-02 20:56:45,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:45,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:56:45,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:45,161 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:56:45,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:56:45,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846417515] [2022-11-02 20:56:45,164 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846417515] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:56:45,164 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:56:45,164 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:56:45,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462692392] [2022-11-02 20:56:45,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:56:45,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:56:45,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:56:45,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:56:45,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:56:45,167 INFO L87 Difference]: Start difference. First operand 952 states and 2513 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:45,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:56:45,288 INFO L93 Difference]: Finished difference Result 910 states and 2399 transitions. [2022-11-02 20:56:45,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:56:45,289 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-02 20:56:45,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:56:45,296 INFO L225 Difference]: With dead ends: 910 [2022-11-02 20:56:45,297 INFO L226 Difference]: Without dead ends: 910 [2022-11-02 20:56:45,297 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 20:56:45,300 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 29 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:56:45,302 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 4 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:56:45,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 910 states. [2022-11-02 20:56:45,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 910 to 910. [2022-11-02 20:56:45,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 910 states, 891 states have (on average 2.6924803591470257) internal successors, (2399), 909 states have internal predecessors, (2399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:45,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 910 states to 910 states and 2399 transitions. [2022-11-02 20:56:45,339 INFO L78 Accepts]: Start accepts. Automaton has 910 states and 2399 transitions. Word has length 11 [2022-11-02 20:56:45,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:56:45,340 INFO L495 AbstractCegarLoop]: Abstraction has 910 states and 2399 transitions. [2022-11-02 20:56:45,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:45,340 INFO L276 IsEmpty]: Start isEmpty. Operand 910 states and 2399 transitions. [2022-11-02 20:56:45,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-02 20:56:45,344 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:56:45,344 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:56:45,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-02 20:56:45,344 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-02 20:56:45,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:45,346 INFO L85 PathProgramCache]: Analyzing trace with hash -16369676, now seen corresponding path program 1 times [2022-11-02 20:56:45,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:56:45,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193941394] [2022-11-02 20:56:45,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:45,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:56:45,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:45,441 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:56:45,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:56:45,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193941394] [2022-11-02 20:56:45,441 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193941394] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:56:45,442 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:56:45,442 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:56:45,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907780081] [2022-11-02 20:56:45,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:56:45,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:56:45,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:56:45,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:56:45,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:56:45,447 INFO L87 Difference]: Start difference. First operand 910 states and 2399 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:45,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:56:45,568 INFO L93 Difference]: Finished difference Result 868 states and 2285 transitions. [2022-11-02 20:56:45,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:56:45,568 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-02 20:56:45,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:56:45,573 INFO L225 Difference]: With dead ends: 868 [2022-11-02 20:56:45,574 INFO L226 Difference]: Without dead ends: 838 [2022-11-02 20:56:45,574 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 20:56:45,575 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 29 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:56:45,576 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 4 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:56:45,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 838 states. [2022-11-02 20:56:45,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 838 to 552. [2022-11-02 20:56:45,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 552 states, 538 states have (on average 2.691449814126394) internal successors, (1448), 551 states have internal predecessors, (1448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:45,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 552 states to 552 states and 1448 transitions. [2022-11-02 20:56:45,599 INFO L78 Accepts]: Start accepts. Automaton has 552 states and 1448 transitions. Word has length 11 [2022-11-02 20:56:45,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:56:45,599 INFO L495 AbstractCegarLoop]: Abstraction has 552 states and 1448 transitions. [2022-11-02 20:56:45,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:45,600 INFO L276 IsEmpty]: Start isEmpty. Operand 552 states and 1448 transitions. [2022-11-02 20:56:45,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-02 20:56:45,601 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:56:45,601 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:56:45,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-02 20:56:45,602 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-02 20:56:45,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:45,602 INFO L85 PathProgramCache]: Analyzing trace with hash 1571538071, now seen corresponding path program 1 times [2022-11-02 20:56:45,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:56:45,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96175263] [2022-11-02 20:56:45,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:45,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:56:45,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:45,697 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 20:56:45,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:56:45,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96175263] [2022-11-02 20:56:45,698 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96175263] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:56:45,698 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:56:45,698 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:56:45,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796083929] [2022-11-02 20:56:45,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:56:45,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:56:45,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:56:45,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:56:45,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:56:45,700 INFO L87 Difference]: Start difference. First operand 552 states and 1448 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:45,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:56:45,846 INFO L93 Difference]: Finished difference Result 644 states and 1685 transitions. [2022-11-02 20:56:45,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:56:45,847 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-02 20:56:45,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:56:45,849 INFO L225 Difference]: With dead ends: 644 [2022-11-02 20:56:45,849 INFO L226 Difference]: Without dead ends: 644 [2022-11-02 20:56:45,850 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 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 20:56:45,850 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 35 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:56:45,851 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 8 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:56:45,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 644 states. [2022-11-02 20:56:45,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 644 to 644. [2022-11-02 20:56:45,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 644 states, 630 states have (on average 2.6746031746031744) internal successors, (1685), 643 states have internal predecessors, (1685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:45,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 644 states to 644 states and 1685 transitions. [2022-11-02 20:56:45,877 INFO L78 Accepts]: Start accepts. Automaton has 644 states and 1685 transitions. Word has length 12 [2022-11-02 20:56:45,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:56:45,877 INFO L495 AbstractCegarLoop]: Abstraction has 644 states and 1685 transitions. [2022-11-02 20:56:45,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:45,877 INFO L276 IsEmpty]: Start isEmpty. Operand 644 states and 1685 transitions. [2022-11-02 20:56:45,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-02 20:56:45,878 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:56:45,878 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:56:45,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-02 20:56:45,879 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-02 20:56:45,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:45,879 INFO L85 PathProgramCache]: Analyzing trace with hash -2101961518, now seen corresponding path program 1 times [2022-11-02 20:56:45,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:56:45,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881005586] [2022-11-02 20:56:45,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:45,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:56:45,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:45,978 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 20:56:45,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:56:45,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881005586] [2022-11-02 20:56:45,979 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881005586] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:56:45,979 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:56:45,980 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:56:45,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123154027] [2022-11-02 20:56:45,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:56:45,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:56:45,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:56:45,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:56:45,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:56:45,981 INFO L87 Difference]: Start difference. First operand 644 states and 1685 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:46,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:56:46,061 INFO L93 Difference]: Finished difference Result 426 states and 982 transitions. [2022-11-02 20:56:46,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:56:46,062 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-11-02 20:56:46,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:56:46,064 INFO L225 Difference]: With dead ends: 426 [2022-11-02 20:56:46,065 INFO L226 Difference]: Without dead ends: 422 [2022-11-02 20:56:46,065 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 20:56:46,065 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 28 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:56:46,066 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 3 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:56:46,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2022-11-02 20:56:46,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 422. [2022-11-02 20:56:46,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 422 states, 410 states have (on average 2.3658536585365852) internal successors, (970), 421 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 20:56:46,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 422 states to 422 states and 970 transitions. [2022-11-02 20:56:46,079 INFO L78 Accepts]: Start accepts. Automaton has 422 states and 970 transitions. Word has length 15 [2022-11-02 20:56:46,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:56:46,079 INFO L495 AbstractCegarLoop]: Abstraction has 422 states and 970 transitions. [2022-11-02 20:56:46,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:46,080 INFO L276 IsEmpty]: Start isEmpty. Operand 422 states and 970 transitions. [2022-11-02 20:56:46,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-02 20:56:46,080 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:56:46,081 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:56:46,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-02 20:56:46,081 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-02 20:56:46,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:46,082 INFO L85 PathProgramCache]: Analyzing trace with hash 1446788512, now seen corresponding path program 1 times [2022-11-02 20:56:46,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:56:46,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573997547] [2022-11-02 20:56:46,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:46,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:56:46,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:46,168 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 20:56:46,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:56:46,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573997547] [2022-11-02 20:56:46,168 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573997547] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:56:46,169 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:56:46,169 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:56:46,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190554682] [2022-11-02 20:56:46,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:56:46,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:56:46,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:56:46,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:56:46,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:56:46,171 INFO L87 Difference]: Start difference. First operand 422 states and 970 transitions. Second operand has 5 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:46,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:56:46,315 INFO L93 Difference]: Finished difference Result 630 states and 1497 transitions. [2022-11-02 20:56:46,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:56:46,315 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-02 20:56:46,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:56:46,318 INFO L225 Difference]: With dead ends: 630 [2022-11-02 20:56:46,319 INFO L226 Difference]: Without dead ends: 630 [2022-11-02 20:56:46,319 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:56:46,319 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 35 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:56:46,320 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 10 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:56:46,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 630 states. [2022-11-02 20:56:46,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 630 to 600. [2022-11-02 20:56:46,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 600 states, 588 states have (on average 2.445578231292517) internal successors, (1438), 599 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:46,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 600 states to 600 states and 1438 transitions. [2022-11-02 20:56:46,362 INFO L78 Accepts]: Start accepts. Automaton has 600 states and 1438 transitions. Word has length 17 [2022-11-02 20:56:46,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:56:46,362 INFO L495 AbstractCegarLoop]: Abstraction has 600 states and 1438 transitions. [2022-11-02 20:56:46,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:46,362 INFO L276 IsEmpty]: Start isEmpty. Operand 600 states and 1438 transitions. [2022-11-02 20:56:46,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-02 20:56:46,363 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:56:46,363 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:56:46,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-02 20:56:46,364 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-02 20:56:46,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:46,364 INFO L85 PathProgramCache]: Analyzing trace with hash 1446788483, now seen corresponding path program 1 times [2022-11-02 20:56:46,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:56:46,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228217528] [2022-11-02 20:56:46,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:46,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:56:46,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:46,445 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 20:56:46,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:56:46,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228217528] [2022-11-02 20:56:46,446 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228217528] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:56:46,446 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:56:46,446 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:56:46,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165037890] [2022-11-02 20:56:46,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:56:46,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:56:46,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:56:46,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:56:46,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:56:46,448 INFO L87 Difference]: Start difference. First operand 600 states and 1438 transitions. Second operand has 5 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:46,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:56:46,581 INFO L93 Difference]: Finished difference Result 712 states and 1684 transitions. [2022-11-02 20:56:46,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:56:46,582 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-02 20:56:46,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:56:46,585 INFO L225 Difference]: With dead ends: 712 [2022-11-02 20:56:46,585 INFO L226 Difference]: Without dead ends: 712 [2022-11-02 20:56:46,586 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:56:46,586 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 41 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:56:46,587 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 11 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:56:46,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 712 states. [2022-11-02 20:56:46,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 712 to 692. [2022-11-02 20:56:46,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 692 states, 680 states have (on average 2.414705882352941) internal successors, (1642), 691 states have internal predecessors, (1642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:46,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 692 states to 692 states and 1642 transitions. [2022-11-02 20:56:46,607 INFO L78 Accepts]: Start accepts. Automaton has 692 states and 1642 transitions. Word has length 17 [2022-11-02 20:56:46,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:56:46,608 INFO L495 AbstractCegarLoop]: Abstraction has 692 states and 1642 transitions. [2022-11-02 20:56:46,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:46,608 INFO L276 IsEmpty]: Start isEmpty. Operand 692 states and 1642 transitions. [2022-11-02 20:56:46,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-02 20:56:46,609 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:56:46,609 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2022-11-02 20:56:46,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-02 20:56:46,610 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-02 20:56:46,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:46,610 INFO L85 PathProgramCache]: Analyzing trace with hash -1877038525, now seen corresponding path program 1 times [2022-11-02 20:56:46,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:56:46,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202206160] [2022-11-02 20:56:46,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:46,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:56:46,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:46,704 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:56:46,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:56:46,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202206160] [2022-11-02 20:56:46,705 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202206160] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:56:46,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [482858146] [2022-11-02 20:56:46,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:46,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:56:46,706 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44b3c563-cfe0-4e7b-b220-a9331818d993/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:56:46,708 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44b3c563-cfe0-4e7b-b220-a9331818d993/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:56:46,714 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44b3c563-cfe0-4e7b-b220-a9331818d993/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-02 20:56:46,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:46,827 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 20:56:46,831 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:56:46,887 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:56:46,887 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:56:46,888 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [482858146] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:56:46,888 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:56:46,888 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2022-11-02 20:56:46,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317548203] [2022-11-02 20:56:46,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:56:46,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:56:46,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:56:46,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:56:46,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:56:46,890 INFO L87 Difference]: Start difference. First operand 692 states and 1642 transitions. Second operand has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:47,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:56:47,009 INFO L93 Difference]: Finished difference Result 646 states and 1515 transitions. [2022-11-02 20:56:47,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:56:47,010 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-11-02 20:56:47,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:56:47,013 INFO L225 Difference]: With dead ends: 646 [2022-11-02 20:56:47,013 INFO L226 Difference]: Without dead ends: 646 [2022-11-02 20:56:47,014 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:56:47,014 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 52 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:56:47,015 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 6 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:56:47,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 646 states. [2022-11-02 20:56:47,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 646 to 646. [2022-11-02 20:56:47,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 646 states, 637 states have (on average 2.378335949764521) internal successors, (1515), 645 states have internal predecessors, (1515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:47,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 646 states to 646 states and 1515 transitions. [2022-11-02 20:56:47,063 INFO L78 Accepts]: Start accepts. Automaton has 646 states and 1515 transitions. Word has length 21 [2022-11-02 20:56:47,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:56:47,063 INFO L495 AbstractCegarLoop]: Abstraction has 646 states and 1515 transitions. [2022-11-02 20:56:47,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:47,064 INFO L276 IsEmpty]: Start isEmpty. Operand 646 states and 1515 transitions. [2022-11-02 20:56:47,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-02 20:56:47,064 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:56:47,065 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2022-11-02 20:56:47,136 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44b3c563-cfe0-4e7b-b220-a9331818d993/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-02 20:56:47,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44b3c563-cfe0-4e7b-b220-a9331818d993/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:56:47,265 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-02 20:56:47,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:47,266 INFO L85 PathProgramCache]: Analyzing trace with hash -1877038616, now seen corresponding path program 1 times [2022-11-02 20:56:47,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:56:47,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693114550] [2022-11-02 20:56:47,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:47,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:56:47,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:47,366 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:56:47,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:56:47,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693114550] [2022-11-02 20:56:47,367 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693114550] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:56:47,367 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:56:47,367 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:56:47,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884400830] [2022-11-02 20:56:47,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:56:47,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:56:47,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:56:47,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:56:47,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:56:47,369 INFO L87 Difference]: Start difference. First operand 646 states and 1515 transitions. Second operand has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:47,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:56:47,485 INFO L93 Difference]: Finished difference Result 600 states and 1388 transitions. [2022-11-02 20:56:47,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:56:47,486 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-11-02 20:56:47,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:56:47,490 INFO L225 Difference]: With dead ends: 600 [2022-11-02 20:56:47,491 INFO L226 Difference]: Without dead ends: 600 [2022-11-02 20:56:47,491 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 20:56:47,491 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 38 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:56:47,492 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 6 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:56:47,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 600 states. [2022-11-02 20:56:47,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 600 to 576. [2022-11-02 20:56:47,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 576 states, 570 states have (on average 2.3263157894736843) internal successors, (1326), 575 states have internal predecessors, (1326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:47,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 1326 transitions. [2022-11-02 20:56:47,508 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 1326 transitions. Word has length 21 [2022-11-02 20:56:47,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:56:47,509 INFO L495 AbstractCegarLoop]: Abstraction has 576 states and 1326 transitions. [2022-11-02 20:56:47,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:47,509 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 1326 transitions. [2022-11-02 20:56:47,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-02 20:56:47,510 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:56:47,511 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:56:47,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-02 20:56:47,511 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-02 20:56:47,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:47,511 INFO L85 PathProgramCache]: Analyzing trace with hash 1181000799, now seen corresponding path program 1 times [2022-11-02 20:56:47,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:56:47,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909358545] [2022-11-02 20:56:47,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:47,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:56:47,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:47,669 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:56:47,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:56:47,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909358545] [2022-11-02 20:56:47,669 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909358545] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:56:47,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [481068093] [2022-11-02 20:56:47,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:47,670 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:56:47,670 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44b3c563-cfe0-4e7b-b220-a9331818d993/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:56:47,671 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44b3c563-cfe0-4e7b-b220-a9331818d993/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:56:47,678 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44b3c563-cfe0-4e7b-b220-a9331818d993/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-02 20:56:47,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:47,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-02 20:56:47,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:56:47,870 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:56:47,870 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:56:47,956 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:56:47,957 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [481068093] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:56:47,957 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:56:47,957 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 10 [2022-11-02 20:56:47,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36575077] [2022-11-02 20:56:47,957 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:56:47,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-02 20:56:47,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:56:47,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-02 20:56:47,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2022-11-02 20:56:47,959 INFO L87 Difference]: Start difference. First operand 576 states and 1326 transitions. Second operand has 12 states, 11 states have (on average 5.636363636363637) internal successors, (62), 11 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:48,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:56:48,237 INFO L93 Difference]: Finished difference Result 622 states and 1451 transitions. [2022-11-02 20:56:48,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:56:48,237 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 5.636363636363637) internal successors, (62), 11 states have internal predecessors, (62), 0 states have call successors, (0), 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 25 [2022-11-02 20:56:48,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:56:48,241 INFO L225 Difference]: With dead ends: 622 [2022-11-02 20:56:48,241 INFO L226 Difference]: Without dead ends: 622 [2022-11-02 20:56:48,241 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2022-11-02 20:56:48,242 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 127 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 298 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:56:48,243 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 10 Invalid, 316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 298 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:56:48,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 622 states. [2022-11-02 20:56:48,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 622 to 422. [2022-11-02 20:56:48,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 422 states, 419 states have (on average 2.2625298329355608) internal successors, (948), 421 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:48,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 422 states to 422 states and 948 transitions. [2022-11-02 20:56:48,259 INFO L78 Accepts]: Start accepts. Automaton has 422 states and 948 transitions. Word has length 25 [2022-11-02 20:56:48,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:56:48,259 INFO L495 AbstractCegarLoop]: Abstraction has 422 states and 948 transitions. [2022-11-02 20:56:48,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 5.636363636363637) internal successors, (62), 11 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:48,260 INFO L276 IsEmpty]: Start isEmpty. Operand 422 states and 948 transitions. [2022-11-02 20:56:48,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-02 20:56:48,261 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:56:48,262 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:56:48,307 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44b3c563-cfe0-4e7b-b220-a9331818d993/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-02 20:56:48,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44b3c563-cfe0-4e7b-b220-a9331818d993/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:56:48,479 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-02 20:56:48,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:48,479 INFO L85 PathProgramCache]: Analyzing trace with hash 1181000770, now seen corresponding path program 1 times [2022-11-02 20:56:48,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:56:48,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732757293] [2022-11-02 20:56:48,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:48,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:56:48,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:48,607 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:56:48,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:56:48,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732757293] [2022-11-02 20:56:48,608 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732757293] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:56:48,608 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:56:48,608 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:56:48,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41561043] [2022-11-02 20:56:48,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:56:48,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:56:48,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:56:48,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:56:48,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:56:48,610 INFO L87 Difference]: Start difference. First operand 422 states and 948 transitions. Second operand has 7 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:48,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:56:48,827 INFO L93 Difference]: Finished difference Result 548 states and 1230 transitions. [2022-11-02 20:56:48,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 20:56:48,828 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 0 states have call successors, (0), 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 25 [2022-11-02 20:56:48,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:56:48,830 INFO L225 Difference]: With dead ends: 548 [2022-11-02 20:56:48,830 INFO L226 Difference]: Without dead ends: 482 [2022-11-02 20:56:48,831 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:56:48,831 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 81 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:56:48,832 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 6 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:56:48,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482 states. [2022-11-02 20:56:48,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482 to 412. [2022-11-02 20:56:48,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 412 states, 409 states have (on average 2.23960880195599) internal successors, (916), 411 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:48,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 916 transitions. [2022-11-02 20:56:48,844 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 916 transitions. Word has length 25 [2022-11-02 20:56:48,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:56:48,844 INFO L495 AbstractCegarLoop]: Abstraction has 412 states and 916 transitions. [2022-11-02 20:56:48,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:48,845 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 916 transitions. [2022-11-02 20:56:48,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-02 20:56:48,846 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:56:48,846 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:56:48,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-02 20:56:48,846 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-02 20:56:48,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:48,847 INFO L85 PathProgramCache]: Analyzing trace with hash 1701824821, now seen corresponding path program 1 times [2022-11-02 20:56:48,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:56:48,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316526713] [2022-11-02 20:56:48,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:48,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:56:48,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:49,081 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:56:49,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:56:49,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316526713] [2022-11-02 20:56:49,081 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316526713] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:56:49,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1043883745] [2022-11-02 20:56:49,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:49,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:56:49,082 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44b3c563-cfe0-4e7b-b220-a9331818d993/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:56:49,083 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44b3c563-cfe0-4e7b-b220-a9331818d993/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:56:49,106 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44b3c563-cfe0-4e7b-b220-a9331818d993/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-02 20:56:49,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:49,232 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-02 20:56:49,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:56:49,275 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:56:49,276 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:56:49,356 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:56:49,357 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1043883745] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:56:49,357 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:56:49,357 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 12 [2022-11-02 20:56:49,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057807605] [2022-11-02 20:56:49,357 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:56:49,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-02 20:56:49,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:56:49,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-02 20:56:49,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2022-11-02 20:56:49,359 INFO L87 Difference]: Start difference. First operand 412 states and 916 transitions. Second operand has 14 states, 13 states have (on average 4.3076923076923075) internal successors, (56), 13 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 20:56:49,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:56:49,795 INFO L93 Difference]: Finished difference Result 830 states and 1882 transitions. [2022-11-02 20:56:49,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 20:56:49,796 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 4.3076923076923075) internal successors, (56), 13 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 20:56:49,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:56:49,799 INFO L225 Difference]: With dead ends: 830 [2022-11-02 20:56:49,799 INFO L226 Difference]: Without dead ends: 712 [2022-11-02 20:56:49,799 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=110, Invalid=232, Unknown=0, NotChecked=0, Total=342 [2022-11-02 20:56:49,800 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 170 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 414 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:56:49,800 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 13 Invalid, 432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 414 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 20:56:49,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 712 states. [2022-11-02 20:56:49,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 712 to 550. [2022-11-02 20:56:49,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 550 states, 548 states have (on average 2.271897810218978) internal successors, (1245), 549 states have internal predecessors, (1245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:49,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 550 states to 550 states and 1245 transitions. [2022-11-02 20:56:49,818 INFO L78 Accepts]: Start accepts. Automaton has 550 states and 1245 transitions. Word has length 26 [2022-11-02 20:56:49,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:56:49,819 INFO L495 AbstractCegarLoop]: Abstraction has 550 states and 1245 transitions. [2022-11-02 20:56:49,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 4.3076923076923075) internal successors, (56), 13 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 20:56:49,819 INFO L276 IsEmpty]: Start isEmpty. Operand 550 states and 1245 transitions. [2022-11-02 20:56:49,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-02 20:56:49,820 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:56:49,821 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1] [2022-11-02 20:56:49,858 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44b3c563-cfe0-4e7b-b220-a9331818d993/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-02 20:56:50,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44b3c563-cfe0-4e7b-b220-a9331818d993/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:56:50,043 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-02 20:56:50,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:50,043 INFO L85 PathProgramCache]: Analyzing trace with hash 384853025, now seen corresponding path program 1 times [2022-11-02 20:56:50,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:56:50,043 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590394151] [2022-11-02 20:56:50,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:50,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:56:50,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:50,415 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:56:50,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:56:50,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590394151] [2022-11-02 20:56:50,416 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590394151] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:56:50,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [74897599] [2022-11-02 20:56:50,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:50,416 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:56:50,416 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44b3c563-cfe0-4e7b-b220-a9331818d993/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:56:50,417 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44b3c563-cfe0-4e7b-b220-a9331818d993/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:56:50,419 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44b3c563-cfe0-4e7b-b220-a9331818d993/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-02 20:56:50,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:50,574 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-02 20:56:50,576 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:56:50,642 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:56:50,642 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:56:50,771 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:56:50,771 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [74897599] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:56:50,771 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:56:50,771 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7, 7] total 19 [2022-11-02 20:56:50,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486523980] [2022-11-02 20:56:50,771 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:56:50,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-02 20:56:50,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:56:50,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-02 20:56:50,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=303, Unknown=0, NotChecked=0, Total=420 [2022-11-02 20:56:50,773 INFO L87 Difference]: Start difference. First operand 550 states and 1245 transitions. Second operand has 21 states, 20 states have (on average 4.25) internal successors, (85), 20 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:51,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:56:51,403 INFO L93 Difference]: Finished difference Result 1158 states and 2603 transitions. [2022-11-02 20:56:51,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-02 20:56:51,404 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 4.25) internal successors, (85), 20 states have internal predecessors, (85), 0 states have call successors, (0), 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 35 [2022-11-02 20:56:51,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:56:51,408 INFO L225 Difference]: With dead ends: 1158 [2022-11-02 20:56:51,408 INFO L226 Difference]: Without dead ends: 1158 [2022-11-02 20:56:51,409 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=227, Invalid=585, Unknown=0, NotChecked=0, Total=812 [2022-11-02 20:56:51,409 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 290 mSDsluCounter, 351 mSDsCounter, 0 mSdLazyCounter, 515 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 290 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 533 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 515 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-02 20:56:51,410 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [290 Valid, 16 Invalid, 533 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 515 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-02 20:56:51,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1158 states. [2022-11-02 20:56:51,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1158 to 1008. [2022-11-02 20:56:51,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1008 states, 1006 states have (on average 2.2823061630218686) internal successors, (2296), 1007 states have internal predecessors, (2296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:51,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1008 states to 1008 states and 2296 transitions. [2022-11-02 20:56:51,437 INFO L78 Accepts]: Start accepts. Automaton has 1008 states and 2296 transitions. Word has length 35 [2022-11-02 20:56:51,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:56:51,437 INFO L495 AbstractCegarLoop]: Abstraction has 1008 states and 2296 transitions. [2022-11-02 20:56:51,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 4.25) internal successors, (85), 20 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:51,437 INFO L276 IsEmpty]: Start isEmpty. Operand 1008 states and 2296 transitions. [2022-11-02 20:56:51,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-02 20:56:51,439 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:56:51,439 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:56:51,479 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44b3c563-cfe0-4e7b-b220-a9331818d993/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-02 20:56:51,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44b3c563-cfe0-4e7b-b220-a9331818d993/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-02 20:56:51,653 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-02 20:56:51,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:51,653 INFO L85 PathProgramCache]: Analyzing trace with hash -1245769163, now seen corresponding path program 1 times [2022-11-02 20:56:51,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:56:51,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512186179] [2022-11-02 20:56:51,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:51,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:56:51,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:52,029 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-02 20:56:52,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:56:52,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512186179] [2022-11-02 20:56:52,030 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512186179] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:56:52,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [981477615] [2022-11-02 20:56:52,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:52,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:56:52,030 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44b3c563-cfe0-4e7b-b220-a9331818d993/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:56:52,031 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44b3c563-cfe0-4e7b-b220-a9331818d993/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:56:52,049 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44b3c563-cfe0-4e7b-b220-a9331818d993/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-02 20:56:52,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:52,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-02 20:56:52,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:56:52,241 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-02 20:56:52,241 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:56:52,351 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-02 20:56:52,352 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [981477615] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:56:52,352 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:56:52,352 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4, 4] total 12 [2022-11-02 20:56:52,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672021770] [2022-11-02 20:56:52,352 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:56:52,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-02 20:56:52,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:56:52,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-02 20:56:52,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2022-11-02 20:56:52,354 INFO L87 Difference]: Start difference. First operand 1008 states and 2296 transitions. Second operand has 14 states, 13 states have (on average 5.384615384615385) internal successors, (70), 13 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:52,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:56:52,759 INFO L93 Difference]: Finished difference Result 1460 states and 3318 transitions. [2022-11-02 20:56:52,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-02 20:56:52,760 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 5.384615384615385) internal successors, (70), 13 states have internal predecessors, (70), 0 states have call successors, (0), 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 36 [2022-11-02 20:56:52,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:56:52,767 INFO L225 Difference]: With dead ends: 1460 [2022-11-02 20:56:52,767 INFO L226 Difference]: Without dead ends: 1460 [2022-11-02 20:56:52,768 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=121, Invalid=385, Unknown=0, NotChecked=0, Total=506 [2022-11-02 20:56:52,768 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 143 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 362 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 362 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:56:52,768 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 10 Invalid, 378 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 362 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 20:56:52,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1460 states. [2022-11-02 20:56:52,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1460 to 1226. [2022-11-02 20:56:52,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1226 states, 1224 states have (on average 2.3063725490196076) internal successors, (2823), 1225 states have internal predecessors, (2823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:52,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1226 states to 1226 states and 2823 transitions. [2022-11-02 20:56:52,805 INFO L78 Accepts]: Start accepts. Automaton has 1226 states and 2823 transitions. Word has length 36 [2022-11-02 20:56:52,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:56:52,806 INFO L495 AbstractCegarLoop]: Abstraction has 1226 states and 2823 transitions. [2022-11-02 20:56:52,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 5.384615384615385) internal successors, (70), 13 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:52,807 INFO L276 IsEmpty]: Start isEmpty. Operand 1226 states and 2823 transitions. [2022-11-02 20:56:52,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-02 20:56:52,809 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:56:52,809 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:56:52,848 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44b3c563-cfe0-4e7b-b220-a9331818d993/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-02 20:56:53,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44b3c563-cfe0-4e7b-b220-a9331818d993/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-02 20:56:53,023 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-02 20:56:53,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:53,023 INFO L85 PathProgramCache]: Analyzing trace with hash -335806687, now seen corresponding path program 2 times [2022-11-02 20:56:53,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:56:53,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307045527] [2022-11-02 20:56:53,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:53,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:56:53,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:53,483 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-02 20:56:53,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:56:53,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307045527] [2022-11-02 20:56:53,483 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307045527] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:56:53,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [333898237] [2022-11-02 20:56:53,484 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:56:53,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:56:53,484 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44b3c563-cfe0-4e7b-b220-a9331818d993/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:56:53,485 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44b3c563-cfe0-4e7b-b220-a9331818d993/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:56:53,509 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44b3c563-cfe0-4e7b-b220-a9331818d993/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-02 20:56:53,665 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 20:56:53,666 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:56:53,668 INFO L263 TraceCheckSpWp]: Trace formula consists of 406 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 20:56:53,670 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:56:53,765 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-02 20:56:53,765 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:56:53,937 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-02 20:56:53,937 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [333898237] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:56:53,937 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:56:53,937 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 20 [2022-11-02 20:56:53,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360594661] [2022-11-02 20:56:53,938 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:56:53,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-02 20:56:53,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:56:53,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-02 20:56:53,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=349, Unknown=0, NotChecked=0, Total=462 [2022-11-02 20:56:53,941 INFO L87 Difference]: Start difference. First operand 1226 states and 2823 transitions. Second operand has 22 states, 21 states have (on average 4.666666666666667) internal successors, (98), 21 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:54,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:56:54,631 INFO L93 Difference]: Finished difference Result 1778 states and 4057 transitions. [2022-11-02 20:56:54,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-02 20:56:54,632 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 4.666666666666667) internal successors, (98), 21 states have internal predecessors, (98), 0 states have call successors, (0), 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 45 [2022-11-02 20:56:54,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:56:54,640 INFO L225 Difference]: With dead ends: 1778 [2022-11-02 20:56:54,640 INFO L226 Difference]: Without dead ends: 1778 [2022-11-02 20:56:54,641 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 326 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=295, Invalid=1037, Unknown=0, NotChecked=0, Total=1332 [2022-11-02 20:56:54,641 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 326 mSDsluCounter, 403 mSDsCounter, 0 mSdLazyCounter, 588 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 326 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 588 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-02 20:56:54,642 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [326 Valid, 16 Invalid, 618 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 588 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-02 20:56:54,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1778 states. [2022-11-02 20:56:54,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1778 to 1342. [2022-11-02 20:56:54,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1342 states, 1340 states have (on average 2.3276119402985076) internal successors, (3119), 1341 states have internal predecessors, (3119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:54,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1342 states to 1342 states and 3119 transitions. [2022-11-02 20:56:54,692 INFO L78 Accepts]: Start accepts. Automaton has 1342 states and 3119 transitions. Word has length 45 [2022-11-02 20:56:54,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:56:54,693 INFO L495 AbstractCegarLoop]: Abstraction has 1342 states and 3119 transitions. [2022-11-02 20:56:54,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 4.666666666666667) internal successors, (98), 21 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:54,694 INFO L276 IsEmpty]: Start isEmpty. Operand 1342 states and 3119 transitions. [2022-11-02 20:56:54,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-02 20:56:54,697 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:56:54,698 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:56:54,742 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44b3c563-cfe0-4e7b-b220-a9331818d993/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-02 20:56:54,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44b3c563-cfe0-4e7b-b220-a9331818d993/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-02 20:56:54,912 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-02 20:56:54,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:54,913 INFO L85 PathProgramCache]: Analyzing trace with hash 381985761, now seen corresponding path program 3 times [2022-11-02 20:56:54,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:56:54,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594853865] [2022-11-02 20:56:54,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:54,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:56:54,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:55,732 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-02 20:56:55,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:56:55,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594853865] [2022-11-02 20:56:55,732 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594853865] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:56:55,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [188241666] [2022-11-02 20:56:55,733 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-02 20:56:55,733 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:56:55,733 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44b3c563-cfe0-4e7b-b220-a9331818d993/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:56:55,734 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44b3c563-cfe0-4e7b-b220-a9331818d993/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:56:55,763 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44b3c563-cfe0-4e7b-b220-a9331818d993/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-02 20:56:56,102 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-11-02 20:56:56,102 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:56:56,106 INFO L263 TraceCheckSpWp]: Trace formula consists of 530 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-02 20:56:56,109 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:56:56,263 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 106 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-02 20:56:56,263 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:56:56,465 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 106 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-02 20:56:56,465 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [188241666] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:56:56,465 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:56:56,466 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 10, 10] total 27 [2022-11-02 20:56:56,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277846442] [2022-11-02 20:56:56,466 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:56:56,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-02 20:56:56,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:56:56,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-02 20:56:56,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=615, Unknown=0, NotChecked=0, Total=812 [2022-11-02 20:56:56,468 INFO L87 Difference]: Start difference. First operand 1342 states and 3119 transitions. Second operand has 29 states, 28 states have (on average 4.642857142857143) internal successors, (130), 28 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:57,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:56:57,369 INFO L93 Difference]: Finished difference Result 2450 states and 5585 transitions. [2022-11-02 20:56:57,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-02 20:56:57,370 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 4.642857142857143) internal successors, (130), 28 states have internal predecessors, (130), 0 states have call successors, (0), 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 63 [2022-11-02 20:56:57,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:56:57,381 INFO L225 Difference]: With dead ends: 2450 [2022-11-02 20:56:57,381 INFO L226 Difference]: Without dead ends: 2450 [2022-11-02 20:56:57,382 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 566 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=487, Invalid=1675, Unknown=0, NotChecked=0, Total=2162 [2022-11-02 20:56:57,383 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 377 mSDsluCounter, 544 mSDsCounter, 0 mSdLazyCounter, 795 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 377 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 825 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 795 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-02 20:56:57,383 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [377 Valid, 20 Invalid, 825 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 795 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-02 20:56:57,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2450 states. [2022-11-02 20:56:57,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2450 to 1472. [2022-11-02 20:56:57,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1472 states, 1470 states have (on average 2.307482993197279) internal successors, (3392), 1471 states have internal predecessors, (3392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:57,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1472 states to 1472 states and 3392 transitions. [2022-11-02 20:56:57,437 INFO L78 Accepts]: Start accepts. Automaton has 1472 states and 3392 transitions. Word has length 63 [2022-11-02 20:56:57,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:56:57,437 INFO L495 AbstractCegarLoop]: Abstraction has 1472 states and 3392 transitions. [2022-11-02 20:56:57,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 4.642857142857143) internal successors, (130), 28 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:57,438 INFO L276 IsEmpty]: Start isEmpty. Operand 1472 states and 3392 transitions. [2022-11-02 20:56:57,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-02 20:56:57,441 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:56:57,441 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:56:57,482 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44b3c563-cfe0-4e7b-b220-a9331818d993/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-02 20:56:57,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44b3c563-cfe0-4e7b-b220-a9331818d993/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-02 20:56:57,661 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-02 20:56:57,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:57,661 INFO L85 PathProgramCache]: Analyzing trace with hash 1104849090, now seen corresponding path program 1 times [2022-11-02 20:56:57,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:56:57,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901451750] [2022-11-02 20:56:57,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:57,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:56:57,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:58,529 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 104 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-02 20:56:58,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:56:58,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901451750] [2022-11-02 20:56:58,530 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901451750] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:56:58,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2105643828] [2022-11-02 20:56:58,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:58,530 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:56:58,531 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44b3c563-cfe0-4e7b-b220-a9331818d993/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:56:58,532 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44b3c563-cfe0-4e7b-b220-a9331818d993/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:56:58,558 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44b3c563-cfe0-4e7b-b220-a9331818d993/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-02 20:56:58,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:58,750 INFO L263 TraceCheckSpWp]: Trace formula consists of 580 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-02 20:56:58,753 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:56:58,884 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 104 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-02 20:56:58,885 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:56:59,084 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 104 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-02 20:56:59,084 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2105643828] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:56:59,084 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:56:59,085 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 23 [2022-11-02 20:56:59,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53565865] [2022-11-02 20:56:59,087 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:56:59,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-02 20:56:59,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:56:59,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-02 20:56:59,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=469, Unknown=0, NotChecked=0, Total=600 [2022-11-02 20:56:59,090 INFO L87 Difference]: Start difference. First operand 1472 states and 3392 transitions. Second operand has 25 states, 24 states have (on average 5.166666666666667) internal successors, (124), 24 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:59,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:56:59,824 INFO L93 Difference]: Finished difference Result 3452 states and 7912 transitions. [2022-11-02 20:56:59,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-02 20:56:59,825 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 5.166666666666667) internal successors, (124), 24 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2022-11-02 20:56:59,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:56:59,840 INFO L225 Difference]: With dead ends: 3452 [2022-11-02 20:56:59,840 INFO L226 Difference]: Without dead ends: 3452 [2022-11-02 20:56:59,841 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 404 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=322, Invalid=1238, Unknown=0, NotChecked=0, Total=1560 [2022-11-02 20:56:59,841 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 280 mSDsluCounter, 408 mSDsCounter, 0 mSdLazyCounter, 608 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 280 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 635 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 608 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-02 20:56:59,841 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [280 Valid, 16 Invalid, 635 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 608 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-02 20:56:59,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3452 states. [2022-11-02 20:56:59,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3452 to 2166. [2022-11-02 20:56:59,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2166 states, 2164 states have (on average 2.3655268022181146) internal successors, (5119), 2165 states have internal predecessors, (5119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:59,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2166 states to 2166 states and 5119 transitions. [2022-11-02 20:56:59,912 INFO L78 Accepts]: Start accepts. Automaton has 2166 states and 5119 transitions. Word has length 71 [2022-11-02 20:56:59,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:56:59,912 INFO L495 AbstractCegarLoop]: Abstraction has 2166 states and 5119 transitions. [2022-11-02 20:56:59,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 5.166666666666667) internal successors, (124), 24 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:59,913 INFO L276 IsEmpty]: Start isEmpty. Operand 2166 states and 5119 transitions. [2022-11-02 20:56:59,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-11-02 20:56:59,918 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:56:59,918 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 9, 1, 1, 1, 1] [2022-11-02 20:56:59,954 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44b3c563-cfe0-4e7b-b220-a9331818d993/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-11-02 20:57:00,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44b3c563-cfe0-4e7b-b220-a9331818d993/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:57:00,141 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-02 20:57:00,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:57:00,141 INFO L85 PathProgramCache]: Analyzing trace with hash 661032865, now seen corresponding path program 2 times [2022-11-02 20:57:00,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:57:00,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359817616] [2022-11-02 20:57:00,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:57:00,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:57:00,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:57:01,861 INFO L134 CoverageAnalysis]: Checked inductivity of 369 backedges. 0 proven. 369 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:57:01,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:57:01,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359817616] [2022-11-02 20:57:01,862 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359817616] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:57:01,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2066945008] [2022-11-02 20:57:01,862 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:57:01,862 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:57:01,862 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44b3c563-cfe0-4e7b-b220-a9331818d993/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:57:01,864 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44b3c563-cfe0-4e7b-b220-a9331818d993/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:57:01,890 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44b3c563-cfe0-4e7b-b220-a9331818d993/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-02 20:57:02,114 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 20:57:02,114 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:57:02,120 INFO L263 TraceCheckSpWp]: Trace formula consists of 708 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-02 20:57:02,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:57:02,338 INFO L134 CoverageAnalysis]: Checked inductivity of 369 backedges. 0 proven. 369 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:57:02,339 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:57:02,871 INFO L134 CoverageAnalysis]: Checked inductivity of 369 backedges. 0 proven. 369 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:57:02,871 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2066945008] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:57:02,871 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:57:02,871 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 19, 19] total 49 [2022-11-02 20:57:02,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410679928] [2022-11-02 20:57:02,872 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:57:02,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2022-11-02 20:57:02,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:57:02,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2022-11-02 20:57:02,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=651, Invalid=1899, Unknown=0, NotChecked=0, Total=2550 [2022-11-02 20:57:02,874 INFO L87 Difference]: Start difference. First operand 2166 states and 5119 transitions. Second operand has 51 states, 50 states have (on average 4.1) internal successors, (205), 50 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:57:04,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:57:04,349 INFO L93 Difference]: Finished difference Result 4094 states and 9372 transitions. [2022-11-02 20:57:04,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-11-02 20:57:04,349 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 50 states have (on average 4.1) internal successors, (205), 50 states have internal predecessors, (205), 0 states have call successors, (0), 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 89 [2022-11-02 20:57:04,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:57:04,362 INFO L225 Difference]: With dead ends: 4094 [2022-11-02 20:57:04,362 INFO L226 Difference]: Without dead ends: 4094 [2022-11-02 20:57:04,363 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1559 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1283, Invalid=3687, Unknown=0, NotChecked=0, Total=4970 [2022-11-02 20:57:04,364 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 954 mSDsluCounter, 841 mSDsCounter, 0 mSdLazyCounter, 1138 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 954 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 1176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:57:04,364 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [954 Valid, 35 Invalid, 1176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 1138 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-02 20:57:04,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4094 states. [2022-11-02 20:57:04,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4094 to 3398. [2022-11-02 20:57:04,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3398 states, 3396 states have (on average 2.3200824499411072) internal successors, (7879), 3397 states have internal predecessors, (7879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:57:04,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3398 states to 3398 states and 7879 transitions. [2022-11-02 20:57:04,461 INFO L78 Accepts]: Start accepts. Automaton has 3398 states and 7879 transitions. Word has length 89 [2022-11-02 20:57:04,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:57:04,461 INFO L495 AbstractCegarLoop]: Abstraction has 3398 states and 7879 transitions. [2022-11-02 20:57:04,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 50 states have (on average 4.1) internal successors, (205), 50 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:57:04,462 INFO L276 IsEmpty]: Start isEmpty. Operand 3398 states and 7879 transitions. [2022-11-02 20:57:04,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-11-02 20:57:04,468 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:57:04,468 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:57:04,504 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44b3c563-cfe0-4e7b-b220-a9331818d993/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-02 20:57:04,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44b3c563-cfe0-4e7b-b220-a9331818d993/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:57:04,683 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-02 20:57:04,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:57:04,683 INFO L85 PathProgramCache]: Analyzing trace with hash -908993005, now seen corresponding path program 4 times [2022-11-02 20:57:04,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:57:04,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979714403] [2022-11-02 20:57:04,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:57:04,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:57:04,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:57:06,092 INFO L134 CoverageAnalysis]: Checked inductivity of 292 backedges. 0 proven. 283 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-02 20:57:06,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:57:06,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979714403] [2022-11-02 20:57:06,092 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979714403] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:57:06,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1872728397] [2022-11-02 20:57:06,093 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-02 20:57:06,093 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:57:06,093 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44b3c563-cfe0-4e7b-b220-a9331818d993/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:57:06,094 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44b3c563-cfe0-4e7b-b220-a9331818d993/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:57:06,099 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44b3c563-cfe0-4e7b-b220-a9331818d993/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-02 20:57:06,342 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-02 20:57:06,342 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:57:06,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 716 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-02 20:57:06,346 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:57:06,512 INFO L134 CoverageAnalysis]: Checked inductivity of 292 backedges. 0 proven. 283 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-02 20:57:06,512 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:57:06,977 INFO L134 CoverageAnalysis]: Checked inductivity of 292 backedges. 0 proven. 283 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-02 20:57:06,978 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1872728397] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:57:06,978 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:57:06,978 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 16, 16] total 41 [2022-11-02 20:57:06,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884560813] [2022-11-02 20:57:06,978 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:57:06,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-11-02 20:57:06,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:57:06,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-11-02 20:57:06,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=430, Invalid=1376, Unknown=0, NotChecked=0, Total=1806 [2022-11-02 20:57:06,981 INFO L87 Difference]: Start difference. First operand 3398 states and 7879 transitions. Second operand has 43 states, 42 states have (on average 4.476190476190476) internal successors, (188), 42 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:57:08,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:57:08,239 INFO L93 Difference]: Finished difference Result 6452 states and 14916 transitions. [2022-11-02 20:57:08,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-11-02 20:57:08,240 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 42 states have (on average 4.476190476190476) internal successors, (188), 42 states have internal predecessors, (188), 0 states have call successors, (0), 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 90 [2022-11-02 20:57:08,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:57:08,257 INFO L225 Difference]: With dead ends: 6452 [2022-11-02 20:57:08,257 INFO L226 Difference]: Without dead ends: 6452 [2022-11-02 20:57:08,259 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1348 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1022, Invalid=3670, Unknown=0, NotChecked=0, Total=4692 [2022-11-02 20:57:08,259 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 692 mSDsluCounter, 744 mSDsCounter, 0 mSdLazyCounter, 1024 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 692 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 1072 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 1024 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-02 20:57:08,260 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [692 Valid, 28 Invalid, 1072 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 1024 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-02 20:57:08,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6452 states. [2022-11-02 20:57:08,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6452 to 4112. [2022-11-02 20:57:08,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4112 states, 4110 states have (on average 2.3445255474452553) internal successors, (9636), 4111 states have internal predecessors, (9636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:57:08,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4112 states to 4112 states and 9636 transitions. [2022-11-02 20:57:08,388 INFO L78 Accepts]: Start accepts. Automaton has 4112 states and 9636 transitions. Word has length 90 [2022-11-02 20:57:08,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:57:08,389 INFO L495 AbstractCegarLoop]: Abstraction has 4112 states and 9636 transitions. [2022-11-02 20:57:08,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 42 states have (on average 4.476190476190476) internal successors, (188), 42 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:57:08,390 INFO L276 IsEmpty]: Start isEmpty. Operand 4112 states and 9636 transitions. [2022-11-02 20:57:08,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-02 20:57:08,398 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:57:08,399 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:57:08,431 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44b3c563-cfe0-4e7b-b220-a9331818d993/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-02 20:57:08,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44b3c563-cfe0-4e7b-b220-a9331818d993/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2022-11-02 20:57:08,621 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-02 20:57:08,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:57:08,622 INFO L85 PathProgramCache]: Analyzing trace with hash -65471820, now seen corresponding path program 2 times [2022-11-02 20:57:08,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:57:08,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891789513] [2022-11-02 20:57:08,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:57:08,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:57:08,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:57:10,137 INFO L134 CoverageAnalysis]: Checked inductivity of 299 backedges. 0 proven. 281 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-02 20:57:10,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:57:10,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891789513] [2022-11-02 20:57:10,137 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891789513] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:57:10,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1133520448] [2022-11-02 20:57:10,138 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:57:10,138 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:57:10,138 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44b3c563-cfe0-4e7b-b220-a9331818d993/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:57:10,139 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44b3c563-cfe0-4e7b-b220-a9331818d993/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:57:10,162 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44b3c563-cfe0-4e7b-b220-a9331818d993/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-02 20:57:10,446 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 20:57:10,446 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:57:10,450 INFO L263 TraceCheckSpWp]: Trace formula consists of 766 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-02 20:57:10,452 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:57:10,643 INFO L134 CoverageAnalysis]: Checked inductivity of 299 backedges. 0 proven. 281 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-02 20:57:10,643 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:57:11,048 INFO L134 CoverageAnalysis]: Checked inductivity of 299 backedges. 0 proven. 281 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-02 20:57:11,049 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1133520448] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:57:11,049 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:57:11,049 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 15, 15] total 38 [2022-11-02 20:57:11,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6226055] [2022-11-02 20:57:11,049 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:57:11,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-11-02 20:57:11,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:57:11,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-11-02 20:57:11,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=344, Invalid=1216, Unknown=0, NotChecked=0, Total=1560 [2022-11-02 20:57:11,051 INFO L87 Difference]: Start difference. First operand 4112 states and 9636 transitions. Second operand has 40 states, 39 states have (on average 4.717948717948718) internal successors, (184), 39 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:57:12,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:57:12,219 INFO L93 Difference]: Finished difference Result 7416 states and 17163 transitions. [2022-11-02 20:57:12,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-11-02 20:57:12,220 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 39 states have (on average 4.717948717948718) internal successors, (184), 39 states have internal predecessors, (184), 0 states have call successors, (0), 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 20:57:12,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:57:12,243 INFO L225 Difference]: With dead ends: 7416 [2022-11-02 20:57:12,244 INFO L226 Difference]: Without dead ends: 7416 [2022-11-02 20:57:12,245 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1211 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=854, Invalid=3306, Unknown=0, NotChecked=0, Total=4160 [2022-11-02 20:57:12,246 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 603 mSDsluCounter, 662 mSDsCounter, 0 mSdLazyCounter, 930 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 603 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 982 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 930 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-02 20:57:12,246 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [603 Valid, 26 Invalid, 982 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 930 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-02 20:57:12,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7416 states. [2022-11-02 20:57:12,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7416 to 3788. [2022-11-02 20:57:12,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3788 states, 3786 states have (on average 2.3277865821447437) internal successors, (8813), 3787 states have internal predecessors, (8813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:57:12,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3788 states to 3788 states and 8813 transitions. [2022-11-02 20:57:12,375 INFO L78 Accepts]: Start accepts. Automaton has 3788 states and 8813 transitions. Word has length 98 [2022-11-02 20:57:12,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:57:12,376 INFO L495 AbstractCegarLoop]: Abstraction has 3788 states and 8813 transitions. [2022-11-02 20:57:12,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 39 states have (on average 4.717948717948718) internal successors, (184), 39 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:57:12,376 INFO L276 IsEmpty]: Start isEmpty. Operand 3788 states and 8813 transitions. [2022-11-02 20:57:12,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-11-02 20:57:12,384 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:57:12,384 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:57:12,428 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44b3c563-cfe0-4e7b-b220-a9331818d993/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-02 20:57:12,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44b3c563-cfe0-4e7b-b220-a9331818d993/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:57:12,599 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-02 20:57:12,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:57:12,599 INFO L85 PathProgramCache]: Analyzing trace with hash -1474841643, now seen corresponding path program 3 times [2022-11-02 20:57:12,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:57:12,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701618580] [2022-11-02 20:57:12,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:57:12,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:57:12,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:57:14,300 INFO L134 CoverageAnalysis]: Checked inductivity of 314 backedges. 0 proven. 293 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-02 20:57:14,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:57:14,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701618580] [2022-11-02 20:57:14,300 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701618580] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:57:14,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1348826856] [2022-11-02 20:57:14,301 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-02 20:57:14,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:57:14,301 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44b3c563-cfe0-4e7b-b220-a9331818d993/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:57:14,303 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44b3c563-cfe0-4e7b-b220-a9331818d993/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:57:14,326 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44b3c563-cfe0-4e7b-b220-a9331818d993/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-02 20:57:15,046 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2022-11-02 20:57:15,046 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:57:15,053 INFO L263 TraceCheckSpWp]: Trace formula consists of 816 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-02 20:57:15,056 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:57:15,229 INFO L134 CoverageAnalysis]: Checked inductivity of 314 backedges. 0 proven. 287 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-11-02 20:57:15,229 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:57:15,616 INFO L134 CoverageAnalysis]: Checked inductivity of 314 backedges. 0 proven. 287 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-11-02 20:57:15,617 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1348826856] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:57:15,617 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:57:15,617 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 14, 14] total 36 [2022-11-02 20:57:15,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520119605] [2022-11-02 20:57:15,617 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:57:15,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-11-02 20:57:15,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:57:15,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-11-02 20:57:15,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=293, Invalid=1113, Unknown=0, NotChecked=0, Total=1406 [2022-11-02 20:57:15,619 INFO L87 Difference]: Start difference. First operand 3788 states and 8813 transitions. Second operand has 38 states, 37 states have (on average 4.918918918918919) internal successors, (182), 37 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:57:16,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:57:16,845 INFO L93 Difference]: Finished difference Result 10514 states and 24433 transitions. [2022-11-02 20:57:16,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-11-02 20:57:16,846 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 37 states have (on average 4.918918918918919) internal successors, (182), 37 states have internal predecessors, (182), 0 states have call successors, (0), 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 106 [2022-11-02 20:57:16,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:57:16,871 INFO L225 Difference]: With dead ends: 10514 [2022-11-02 20:57:16,872 INFO L226 Difference]: Without dead ends: 10514 [2022-11-02 20:57:16,873 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1129 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=775, Invalid=3131, Unknown=0, NotChecked=0, Total=3906 [2022-11-02 20:57:16,874 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 535 mSDsluCounter, 631 mSDsCounter, 0 mSdLazyCounter, 912 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 535 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 961 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 912 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-02 20:57:16,874 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [535 Valid, 22 Invalid, 961 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 912 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-02 20:57:16,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10514 states. [2022-11-02 20:57:17,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10514 to 6858. [2022-11-02 20:57:17,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6858 states, 6856 states have (on average 2.435385064177363) internal successors, (16697), 6857 states have internal predecessors, (16697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:57:17,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6858 states to 6858 states and 16697 transitions. [2022-11-02 20:57:17,070 INFO L78 Accepts]: Start accepts. Automaton has 6858 states and 16697 transitions. Word has length 106 [2022-11-02 20:57:17,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:57:17,070 INFO L495 AbstractCegarLoop]: Abstraction has 6858 states and 16697 transitions. [2022-11-02 20:57:17,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 37 states have (on average 4.918918918918919) internal successors, (182), 37 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:57:17,071 INFO L276 IsEmpty]: Start isEmpty. Operand 6858 states and 16697 transitions. [2022-11-02 20:57:17,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-11-02 20:57:17,090 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:57:17,091 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 13, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:57:17,128 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44b3c563-cfe0-4e7b-b220-a9331818d993/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-02 20:57:17,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44b3c563-cfe0-4e7b-b220-a9331818d993/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-11-02 20:57:17,311 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-02 20:57:17,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:57:17,311 INFO L85 PathProgramCache]: Analyzing trace with hash 455702069, now seen corresponding path program 5 times [2022-11-02 20:57:17,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:57:17,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933506020] [2022-11-02 20:57:17,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:57:17,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:57:17,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:57:20,033 INFO L134 CoverageAnalysis]: Checked inductivity of 654 backedges. 0 proven. 645 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-02 20:57:20,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:57:20,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933506020] [2022-11-02 20:57:20,039 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933506020] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:57:20,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1343913100] [2022-11-02 20:57:20,039 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-02 20:57:20,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:57:20,039 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44b3c563-cfe0-4e7b-b220-a9331818d993/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:57:20,040 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44b3c563-cfe0-4e7b-b220-a9331818d993/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:57:20,042 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44b3c563-cfe0-4e7b-b220-a9331818d993/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-02 20:57:20,889 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2022-11-02 20:57:20,889 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:57:20,895 INFO L263 TraceCheckSpWp]: Trace formula consists of 964 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-02 20:57:20,898 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:57:21,124 INFO L134 CoverageAnalysis]: Checked inductivity of 654 backedges. 0 proven. 645 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-02 20:57:21,125 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:57:21,864 INFO L134 CoverageAnalysis]: Checked inductivity of 654 backedges. 0 proven. 645 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-02 20:57:21,865 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1343913100] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:57:21,865 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:57:21,865 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 24, 24] total 61 [2022-11-02 20:57:21,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764179203] [2022-11-02 20:57:21,865 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:57:21,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2022-11-02 20:57:21,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:57:21,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2022-11-02 20:57:21,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=930, Invalid=2976, Unknown=0, NotChecked=0, Total=3906 [2022-11-02 20:57:21,869 INFO L87 Difference]: Start difference. First operand 6858 states and 16697 transitions. Second operand has 63 states, 62 states have (on average 4.32258064516129) internal successors, (268), 62 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:57:24,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:57:24,098 INFO L93 Difference]: Finished difference Result 15990 states and 38035 transitions. [2022-11-02 20:57:24,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2022-11-02 20:57:24,099 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 62 states have (on average 4.32258064516129) internal successors, (268), 62 states have internal predecessors, (268), 0 states have call successors, (0), 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 126 [2022-11-02 20:57:24,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:57:24,138 INFO L225 Difference]: With dead ends: 15990 [2022-11-02 20:57:24,139 INFO L226 Difference]: Without dead ends: 15990 [2022-11-02 20:57:24,141 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3288 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=2279, Invalid=8433, Unknown=0, NotChecked=0, Total=10712 [2022-11-02 20:57:24,142 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 1270 mSDsluCounter, 1041 mSDsCounter, 0 mSdLazyCounter, 1396 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1270 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 1476 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 1396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:57:24,142 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1270 Valid, 37 Invalid, 1476 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 1396 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-02 20:57:24,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15990 states. [2022-11-02 20:57:24,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15990 to 8562. [2022-11-02 20:57:24,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8562 states, 8560 states have (on average 2.470327102803738) internal successors, (21146), 8561 states have internal predecessors, (21146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:57:24,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8562 states to 8562 states and 21146 transitions. [2022-11-02 20:57:24,398 INFO L78 Accepts]: Start accepts. Automaton has 8562 states and 21146 transitions. Word has length 126 [2022-11-02 20:57:24,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:57:24,398 INFO L495 AbstractCegarLoop]: Abstraction has 8562 states and 21146 transitions. [2022-11-02 20:57:24,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 62 states have (on average 4.32258064516129) internal successors, (268), 62 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:57:24,399 INFO L276 IsEmpty]: Start isEmpty. Operand 8562 states and 21146 transitions. [2022-11-02 20:57:24,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-11-02 20:57:24,414 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:57:24,415 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 13, 12, 12, 12, 12, 12, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:57:24,458 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44b3c563-cfe0-4e7b-b220-a9331818d993/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-02 20:57:24,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44b3c563-cfe0-4e7b-b220-a9331818d993/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-11-02 20:57:24,639 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-02 20:57:24,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:57:24,639 INFO L85 PathProgramCache]: Analyzing trace with hash 383839412, now seen corresponding path program 4 times [2022-11-02 20:57:24,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:57:24,639 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140101175] [2022-11-02 20:57:24,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:57:24,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:57:24,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:57:26,748 INFO L134 CoverageAnalysis]: Checked inductivity of 661 backedges. 0 proven. 643 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-02 20:57:26,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:57:26,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140101175] [2022-11-02 20:57:26,748 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140101175] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:57:26,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [105027348] [2022-11-02 20:57:26,748 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-02 20:57:26,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:57:26,749 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44b3c563-cfe0-4e7b-b220-a9331818d993/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:57:26,750 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44b3c563-cfe0-4e7b-b220-a9331818d993/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:57:26,764 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44b3c563-cfe0-4e7b-b220-a9331818d993/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-02 20:57:27,176 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-02 20:57:27,176 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:57:27,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 1014 conjuncts, 31 conjunts are in the unsatisfiable core [2022-11-02 20:57:27,183 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:57:27,395 INFO L134 CoverageAnalysis]: Checked inductivity of 661 backedges. 0 proven. 643 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-02 20:57:27,395 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:57:28,031 INFO L134 CoverageAnalysis]: Checked inductivity of 661 backedges. 0 proven. 643 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-02 20:57:28,031 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [105027348] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:57:28,031 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:57:28,031 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 23, 23] total 58 [2022-11-02 20:57:28,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937235540] [2022-11-02 20:57:28,032 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:57:28,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2022-11-02 20:57:28,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:57:28,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2022-11-02 20:57:28,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=796, Invalid=2744, Unknown=0, NotChecked=0, Total=3540 [2022-11-02 20:57:28,034 INFO L87 Difference]: Start difference. First operand 8562 states and 21146 transitions. Second operand has 60 states, 59 states have (on average 4.47457627118644) internal successors, (264), 59 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:57:30,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:57:30,104 INFO L93 Difference]: Finished difference Result 16308 states and 39039 transitions. [2022-11-02 20:57:30,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2022-11-02 20:57:30,104 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 59 states have (on average 4.47457627118644) internal successors, (264), 59 states have internal predecessors, (264), 0 states have call successors, (0), 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 134 [2022-11-02 20:57:30,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:57:30,135 INFO L225 Difference]: With dead ends: 16308 [2022-11-02 20:57:30,135 INFO L226 Difference]: Without dead ends: 16308 [2022-11-02 20:57:30,137 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 347 GetRequests, 249 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3086 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=2019, Invalid=7881, Unknown=0, NotChecked=0, Total=9900 [2022-11-02 20:57:30,138 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 1052 mSDsluCounter, 1096 mSDsCounter, 0 mSdLazyCounter, 1481 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1052 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 1563 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 1481 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:57:30,138 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1052 Valid, 40 Invalid, 1563 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 1481 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-02 20:57:30,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16308 states. [2022-11-02 20:57:30,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16308 to 8230. [2022-11-02 20:57:30,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8230 states, 8228 states have (on average 2.458799222168206) internal successors, (20231), 8229 states have internal predecessors, (20231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:57:30,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8230 states to 8230 states and 20231 transitions. [2022-11-02 20:57:30,395 INFO L78 Accepts]: Start accepts. Automaton has 8230 states and 20231 transitions. Word has length 134 [2022-11-02 20:57:30,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:57:30,395 INFO L495 AbstractCegarLoop]: Abstraction has 8230 states and 20231 transitions. [2022-11-02 20:57:30,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 59 states have (on average 4.47457627118644) internal successors, (264), 59 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:57:30,396 INFO L276 IsEmpty]: Start isEmpty. Operand 8230 states and 20231 transitions. [2022-11-02 20:57:30,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-11-02 20:57:30,451 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:57:30,451 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 13, 12, 12, 12, 12, 12, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:57:30,477 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44b3c563-cfe0-4e7b-b220-a9331818d993/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-02 20:57:30,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44b3c563-cfe0-4e7b-b220-a9331818d993/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:57:30,652 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-02 20:57:30,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:57:30,653 INFO L85 PathProgramCache]: Analyzing trace with hash -88699533, now seen corresponding path program 5 times [2022-11-02 20:57:30,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:57:30,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357805911] [2022-11-02 20:57:30,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:57:30,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:57:30,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:57:32,812 INFO L134 CoverageAnalysis]: Checked inductivity of 676 backedges. 0 proven. 655 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-02 20:57:32,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:57:32,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357805911] [2022-11-02 20:57:32,813 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357805911] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:57:32,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1355276186] [2022-11-02 20:57:32,813 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-02 20:57:32,813 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:57:32,814 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44b3c563-cfe0-4e7b-b220-a9331818d993/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:57:32,816 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44b3c563-cfe0-4e7b-b220-a9331818d993/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:57:32,817 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44b3c563-cfe0-4e7b-b220-a9331818d993/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-02 20:57:33,816 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2022-11-02 20:57:33,817 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:57:33,825 INFO L263 TraceCheckSpWp]: Trace formula consists of 1064 conjuncts, 33 conjunts are in the unsatisfiable core [2022-11-02 20:57:33,830 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:57:34,040 INFO L134 CoverageAnalysis]: Checked inductivity of 676 backedges. 0 proven. 649 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-11-02 20:57:34,041 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:57:34,814 INFO L134 CoverageAnalysis]: Checked inductivity of 676 backedges. 0 proven. 649 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-11-02 20:57:34,814 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1355276186] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:57:34,814 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:57:34,814 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 22, 22] total 56 [2022-11-02 20:57:34,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957724154] [2022-11-02 20:57:34,814 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:57:34,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2022-11-02 20:57:34,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:57:34,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2022-11-02 20:57:34,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=709, Invalid=2597, Unknown=0, NotChecked=0, Total=3306 [2022-11-02 20:57:34,818 INFO L87 Difference]: Start difference. First operand 8230 states and 20231 transitions. Second operand has 58 states, 57 states have (on average 4.5964912280701755) internal successors, (262), 57 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:57:36,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:57:36,717 INFO L93 Difference]: Finished difference Result 29240 states and 70032 transitions. [2022-11-02 20:57:36,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-11-02 20:57:36,717 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 57 states have (on average 4.5964912280701755) internal successors, (262), 57 states have internal predecessors, (262), 0 states have call successors, (0), 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 142 [2022-11-02 20:57:36,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:57:36,781 INFO L225 Difference]: With dead ends: 29240 [2022-11-02 20:57:36,781 INFO L226 Difference]: Without dead ends: 29240 [2022-11-02 20:57:36,782 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 360 GetRequests, 269 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2618 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1757, Invalid=6799, Unknown=0, NotChecked=0, Total=8556 [2022-11-02 20:57:36,783 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 1136 mSDsluCounter, 920 mSDsCounter, 0 mSdLazyCounter, 1260 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1136 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 1341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 1260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:57:36,783 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1136 Valid, 32 Invalid, 1341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 1260 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-02 20:57:36,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29240 states. [2022-11-02 20:57:37,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29240 to 9856. [2022-11-02 20:57:37,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9856 states, 9854 states have (on average 2.4593058656383193) internal successors, (24234), 9855 states have internal predecessors, (24234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:57:37,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9856 states to 9856 states and 24234 transitions. [2022-11-02 20:57:37,315 INFO L78 Accepts]: Start accepts. Automaton has 9856 states and 24234 transitions. Word has length 142 [2022-11-02 20:57:37,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:57:37,316 INFO L495 AbstractCegarLoop]: Abstraction has 9856 states and 24234 transitions. [2022-11-02 20:57:37,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 57 states have (on average 4.5964912280701755) internal successors, (262), 57 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:57:37,316 INFO L276 IsEmpty]: Start isEmpty. Operand 9856 states and 24234 transitions. [2022-11-02 20:57:37,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-11-02 20:57:37,341 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:57:37,341 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 13, 12, 12, 12, 12, 12, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:57:37,384 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44b3c563-cfe0-4e7b-b220-a9331818d993/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-02 20:57:37,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44b3c563-cfe0-4e7b-b220-a9331818d993/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:57:37,567 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-02 20:57:37,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:57:37,568 INFO L85 PathProgramCache]: Analyzing trace with hash -1166067183, now seen corresponding path program 6 times [2022-11-02 20:57:37,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:57:37,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171082499] [2022-11-02 20:57:37,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:57:37,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:57:37,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:57:39,591 INFO L134 CoverageAnalysis]: Checked inductivity of 676 backedges. 0 proven. 655 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-02 20:57:39,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:57:39,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171082499] [2022-11-02 20:57:39,592 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171082499] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:57:39,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [538103978] [2022-11-02 20:57:39,592 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-02 20:57:39,592 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:57:39,592 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44b3c563-cfe0-4e7b-b220-a9331818d993/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:57:39,593 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44b3c563-cfe0-4e7b-b220-a9331818d993/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:57:39,598 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44b3c563-cfe0-4e7b-b220-a9331818d993/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-02 20:57:41,092 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2022-11-02 20:57:41,092 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:57:41,101 INFO L263 TraceCheckSpWp]: Trace formula consists of 1064 conjuncts, 33 conjunts are in the unsatisfiable core [2022-11-02 20:57:41,105 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:57:41,337 INFO L134 CoverageAnalysis]: Checked inductivity of 676 backedges. 0 proven. 649 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-11-02 20:57:41,337 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:57:41,970 INFO L134 CoverageAnalysis]: Checked inductivity of 676 backedges. 0 proven. 649 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-11-02 20:57:41,970 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [538103978] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:57:41,970 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:57:41,970 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 22, 22] total 56 [2022-11-02 20:57:41,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239253778] [2022-11-02 20:57:41,970 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:57:41,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2022-11-02 20:57:41,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:57:41,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2022-11-02 20:57:41,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=709, Invalid=2597, Unknown=0, NotChecked=0, Total=3306 [2022-11-02 20:57:41,972 INFO L87 Difference]: Start difference. First operand 9856 states and 24234 transitions. Second operand has 58 states, 57 states have (on average 4.5964912280701755) internal successors, (262), 57 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:57:43,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:57:43,854 INFO L93 Difference]: Finished difference Result 34842 states and 83273 transitions. [2022-11-02 20:57:43,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2022-11-02 20:57:43,856 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 57 states have (on average 4.5964912280701755) internal successors, (262), 57 states have internal predecessors, (262), 0 states have call successors, (0), 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 142 [2022-11-02 20:57:43,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:57:43,922 INFO L225 Difference]: With dead ends: 34842 [2022-11-02 20:57:43,922 INFO L226 Difference]: Without dead ends: 34842 [2022-11-02 20:57:43,923 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 365 GetRequests, 269 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2925 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1881, Invalid=7625, Unknown=0, NotChecked=0, Total=9506 [2022-11-02 20:57:43,924 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 1207 mSDsluCounter, 881 mSDsCounter, 0 mSdLazyCounter, 1203 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1207 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 1311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 1203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-02 20:57:43,924 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1207 Valid, 30 Invalid, 1311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 1203 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-02 20:57:43,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34842 states. [2022-11-02 20:57:44,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34842 to 15346. [2022-11-02 20:57:44,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15346 states, 15344 states have (on average 2.516944734098019) internal successors, (38620), 15345 states have internal predecessors, (38620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:57:44,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15346 states to 15346 states and 38620 transitions. [2022-11-02 20:57:44,679 INFO L78 Accepts]: Start accepts. Automaton has 15346 states and 38620 transitions. Word has length 142 [2022-11-02 20:57:44,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:57:44,680 INFO L495 AbstractCegarLoop]: Abstraction has 15346 states and 38620 transitions. [2022-11-02 20:57:44,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 57 states have (on average 4.5964912280701755) internal successors, (262), 57 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:57:44,681 INFO L276 IsEmpty]: Start isEmpty. Operand 15346 states and 38620 transitions. [2022-11-02 20:57:44,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-11-02 20:57:44,732 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:57:44,732 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 15, 14, 14, 14, 14, 14, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:57:44,779 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44b3c563-cfe0-4e7b-b220-a9331818d993/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-11-02 20:57:44,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44b3c563-cfe0-4e7b-b220-a9331818d993/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-11-02 20:57:44,947 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-02 20:57:44,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:57:44,947 INFO L85 PathProgramCache]: Analyzing trace with hash 1665628696, now seen corresponding path program 7 times [2022-11-02 20:57:44,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:57:44,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743204440] [2022-11-02 20:57:44,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:57:44,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:57:45,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:57:47,738 INFO L134 CoverageAnalysis]: Checked inductivity of 934 backedges. 0 proven. 898 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-11-02 20:57:47,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:57:47,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743204440] [2022-11-02 20:57:47,738 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743204440] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:57:47,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [56067321] [2022-11-02 20:57:47,738 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-02 20:57:47,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:57:47,739 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44b3c563-cfe0-4e7b-b220-a9331818d993/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:57:47,739 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44b3c563-cfe0-4e7b-b220-a9331818d993/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:57:47,741 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44b3c563-cfe0-4e7b-b220-a9331818d993/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-02 20:57:48,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:57:48,109 INFO L263 TraceCheckSpWp]: Trace formula consists of 1238 conjuncts, 39 conjunts are in the unsatisfiable core [2022-11-02 20:57:48,113 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:57:48,402 INFO L134 CoverageAnalysis]: Checked inductivity of 934 backedges. 0 proven. 898 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-11-02 20:57:48,402 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:57:49,214 INFO L134 CoverageAnalysis]: Checked inductivity of 934 backedges. 0 proven. 898 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-11-02 20:57:49,214 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [56067321] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:57:49,214 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:57:49,214 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 25, 25] total 62 [2022-11-02 20:57:49,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071044308] [2022-11-02 20:57:49,215 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:57:49,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2022-11-02 20:57:49,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:57:49,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2022-11-02 20:57:49,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=826, Invalid=3206, Unknown=0, NotChecked=0, Total=4032 [2022-11-02 20:57:49,217 INFO L87 Difference]: Start difference. First operand 15346 states and 38620 transitions. Second operand has 64 states, 63 states have (on average 4.698412698412699) internal successors, (296), 63 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:57:51,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:57:51,512 INFO L93 Difference]: Finished difference Result 43948 states and 107697 transitions. [2022-11-02 20:57:51,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2022-11-02 20:57:51,512 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 63 states have (on average 4.698412698412699) internal successors, (296), 63 states have internal predecessors, (296), 0 states have call successors, (0), 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 168 [2022-11-02 20:57:51,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:57:51,604 INFO L225 Difference]: With dead ends: 43948 [2022-11-02 20:57:51,604 INFO L226 Difference]: Without dead ends: 43948 [2022-11-02 20:57:51,605 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 426 GetRequests, 323 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3432 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=2102, Invalid=8818, Unknown=0, NotChecked=0, Total=10920 [2022-11-02 20:57:51,606 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 1275 mSDsluCounter, 940 mSDsCounter, 0 mSdLazyCounter, 1278 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1275 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 1384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 1278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:57:51,606 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1275 Valid, 33 Invalid, 1384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 1278 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-02 20:57:51,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43948 states. [2022-11-02 20:57:51,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43948 to 10558. [2022-11-02 20:57:51,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10558 states, 10556 states have (on average 2.488442591890868) internal successors, (26268), 10557 states have internal predecessors, (26268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:57:52,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10558 states to 10558 states and 26268 transitions. [2022-11-02 20:57:52,018 INFO L78 Accepts]: Start accepts. Automaton has 10558 states and 26268 transitions. Word has length 168 [2022-11-02 20:57:52,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:57:52,018 INFO L495 AbstractCegarLoop]: Abstraction has 10558 states and 26268 transitions. [2022-11-02 20:57:52,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 63 states have (on average 4.698412698412699) internal successors, (296), 63 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:57:52,020 INFO L276 IsEmpty]: Start isEmpty. Operand 10558 states and 26268 transitions. [2022-11-02 20:57:52,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2022-11-02 20:57:52,041 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:57:52,041 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 15, 15, 15, 15, 15, 5, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:57:52,084 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44b3c563-cfe0-4e7b-b220-a9331818d993/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-11-02 20:57:52,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44b3c563-cfe0-4e7b-b220-a9331818d993/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-11-02 20:57:52,259 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-02 20:57:52,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:57:52,259 INFO L85 PathProgramCache]: Analyzing trace with hash -938889371, now seen corresponding path program 8 times [2022-11-02 20:57:52,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:57:52,259 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579819543] [2022-11-02 20:57:52,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:57:52,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:57:52,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:57:55,894 INFO L134 CoverageAnalysis]: Checked inductivity of 1096 backedges. 0 proven. 1051 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-11-02 20:57:55,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:57:55,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579819543] [2022-11-02 20:57:55,894 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579819543] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:57:55,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1966258991] [2022-11-02 20:57:55,895 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:57:55,895 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:57:55,895 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44b3c563-cfe0-4e7b-b220-a9331818d993/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:57:55,896 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44b3c563-cfe0-4e7b-b220-a9331818d993/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:57:55,916 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44b3c563-cfe0-4e7b-b220-a9331818d993/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-11-02 20:57:56,322 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 20:57:56,322 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:57:56,328 INFO L263 TraceCheckSpWp]: Trace formula consists of 1350 conjuncts, 43 conjunts are in the unsatisfiable core [2022-11-02 20:57:56,331 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:57:56,597 INFO L134 CoverageAnalysis]: Checked inductivity of 1096 backedges. 0 proven. 1051 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-11-02 20:57:56,597 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:57:57,499 INFO L134 CoverageAnalysis]: Checked inductivity of 1096 backedges. 0 proven. 1051 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-11-02 20:57:57,499 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1966258991] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:57:57,499 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:57:57,499 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 26, 26] total 64 [2022-11-02 20:57:57,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98744465] [2022-11-02 20:57:57,500 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:57:57,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2022-11-02 20:57:57,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:57:57,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2022-11-02 20:57:57,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=847, Invalid=3443, Unknown=0, NotChecked=0, Total=4290 [2022-11-02 20:57:57,502 INFO L87 Difference]: Start difference. First operand 10558 states and 26268 transitions. Second operand has 66 states, 65 states have (on average 4.8) internal successors, (312), 65 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:57:59,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:57:59,654 INFO L93 Difference]: Finished difference Result 32352 states and 79129 transitions. [2022-11-02 20:57:59,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2022-11-02 20:57:59,655 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 65 states have (on average 4.8) internal successors, (312), 65 states have internal predecessors, (312), 0 states have call successors, (0), 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 185 [2022-11-02 20:57:59,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:57:59,720 INFO L225 Difference]: With dead ends: 32352 [2022-11-02 20:57:59,721 INFO L226 Difference]: Without dead ends: 32352 [2022-11-02 20:57:59,722 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 467 GetRequests, 360 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3783 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=2220, Invalid=9552, Unknown=0, NotChecked=0, Total=11772 [2022-11-02 20:57:59,723 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 1358 mSDsluCounter, 947 mSDsCounter, 0 mSdLazyCounter, 1290 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1358 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 1418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 1290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:57:59,724 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1358 Valid, 32 Invalid, 1418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 1290 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-02 20:57:59,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32352 states. [2022-11-02 20:58:00,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32352 to 16522. [2022-11-02 20:58:00,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16522 states, 16520 states have (on average 2.5265133171912835) internal successors, (41738), 16521 states have internal predecessors, (41738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:58:00,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16522 states to 16522 states and 41738 transitions. [2022-11-02 20:58:00,142 INFO L78 Accepts]: Start accepts. Automaton has 16522 states and 41738 transitions. Word has length 185 [2022-11-02 20:58:00,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:58:00,142 INFO L495 AbstractCegarLoop]: Abstraction has 16522 states and 41738 transitions. [2022-11-02 20:58:00,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 65 states have (on average 4.8) internal successors, (312), 65 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:58:00,143 INFO L276 IsEmpty]: Start isEmpty. Operand 16522 states and 41738 transitions. [2022-11-02 20:58:00,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2022-11-02 20:58:00,168 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:58:00,168 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 19, 18, 18, 18, 18, 18, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:58:00,206 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44b3c563-cfe0-4e7b-b220-a9331818d993/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-11-02 20:58:00,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44b3c563-cfe0-4e7b-b220-a9331818d993/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-11-02 20:58:00,383 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-02 20:58:00,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:58:00,383 INFO L85 PathProgramCache]: Analyzing trace with hash -749466923, now seen corresponding path program 9 times [2022-11-02 20:58:00,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:58:00,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274412405] [2022-11-02 20:58:00,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:58:00,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:58:00,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:58:04,362 INFO L134 CoverageAnalysis]: Checked inductivity of 1489 backedges. 0 proven. 1462 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-11-02 20:58:04,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:58:04,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274412405] [2022-11-02 20:58:04,362 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274412405] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:58:04,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [645842568] [2022-11-02 20:58:04,362 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-02 20:58:04,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:58:04,363 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44b3c563-cfe0-4e7b-b220-a9331818d993/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:58:04,363 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44b3c563-cfe0-4e7b-b220-a9331818d993/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:58:04,365 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44b3c563-cfe0-4e7b-b220-a9331818d993/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-11-02 20:58:16,858 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 19 check-sat command(s) [2022-11-02 20:58:16,858 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:58:16,877 INFO L263 TraceCheckSpWp]: Trace formula consists of 1436 conjuncts, 45 conjunts are in the unsatisfiable core [2022-11-02 20:58:16,880 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:58:17,196 INFO L134 CoverageAnalysis]: Checked inductivity of 1489 backedges. 0 proven. 1462 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-11-02 20:58:17,196 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:58:18,432 INFO L134 CoverageAnalysis]: Checked inductivity of 1489 backedges. 0 proven. 1462 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-11-02 20:58:18,433 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [645842568] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:58:18,433 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:58:18,433 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 34, 34] total 85 [2022-11-02 20:58:18,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103466394] [2022-11-02 20:58:18,434 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:58:18,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 87 states [2022-11-02 20:58:18,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:58:18,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2022-11-02 20:58:18,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1644, Invalid=5838, Unknown=0, NotChecked=0, Total=7482 [2022-11-02 20:58:18,436 INFO L87 Difference]: Start difference. First operand 16522 states and 41738 transitions. Second operand has 87 states, 86 states have (on average 4.4186046511627906) internal successors, (380), 86 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:58:22,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:58:22,278 INFO L93 Difference]: Finished difference Result 84518 states and 209065 transitions. [2022-11-02 20:58:22,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2022-11-02 20:58:22,278 INFO L78 Accepts]: Start accepts. Automaton has has 87 states, 86 states have (on average 4.4186046511627906) internal successors, (380), 86 states have internal predecessors, (380), 0 states have call successors, (0), 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 196 [2022-11-02 20:58:22,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:58:22,483 INFO L225 Difference]: With dead ends: 84518 [2022-11-02 20:58:22,483 INFO L226 Difference]: Without dead ends: 84518 [2022-11-02 20:58:22,485 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 511 GetRequests, 366 SyntacticMatches, 0 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6975 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=4248, Invalid=17214, Unknown=0, NotChecked=0, Total=21462 [2022-11-02 20:58:22,486 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 1868 mSDsluCounter, 1378 mSDsCounter, 0 mSdLazyCounter, 1828 mSolverCounterSat, 153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1868 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 1981 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 153 IncrementalHoareTripleChecker+Valid, 1828 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-02 20:58:22,486 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1868 Valid, 48 Invalid, 1981 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [153 Valid, 1828 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-02 20:58:22,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84518 states. [2022-11-02 20:58:23,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84518 to 42544. [2022-11-02 20:58:23,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42544 states, 42542 states have (on average 2.568779088900381) internal successors, (109281), 42543 states have internal predecessors, (109281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:58:23,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42544 states to 42544 states and 109281 transitions. [2022-11-02 20:58:23,859 INFO L78 Accepts]: Start accepts. Automaton has 42544 states and 109281 transitions. Word has length 196 [2022-11-02 20:58:23,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:58:23,859 INFO L495 AbstractCegarLoop]: Abstraction has 42544 states and 109281 transitions. [2022-11-02 20:58:23,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 87 states, 86 states have (on average 4.4186046511627906) internal successors, (380), 86 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:58:23,860 INFO L276 IsEmpty]: Start isEmpty. Operand 42544 states and 109281 transitions. [2022-11-02 20:58:24,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2022-11-02 20:58:24,143 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:58:24,143 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 20, 19, 19, 19, 19, 19, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:58:24,187 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44b3c563-cfe0-4e7b-b220-a9331818d993/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2022-11-02 20:58:24,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44b3c563-cfe0-4e7b-b220-a9331818d993/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:58:24,369 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-02 20:58:24,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:58:24,369 INFO L85 PathProgramCache]: Analyzing trace with hash 652265472, now seen corresponding path program 10 times [2022-11-02 20:58:24,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:58:24,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350234645] [2022-11-02 20:58:24,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:58:24,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:58:24,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:58:28,808 INFO L134 CoverageAnalysis]: Checked inductivity of 1679 backedges. 0 proven. 1643 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-11-02 20:58:28,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:58:28,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350234645] [2022-11-02 20:58:28,808 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350234645] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:58:28,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [917241996] [2022-11-02 20:58:28,811 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-02 20:58:28,811 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:58:28,811 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44b3c563-cfe0-4e7b-b220-a9331818d993/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:58:28,812 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44b3c563-cfe0-4e7b-b220-a9331818d993/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:58:28,816 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44b3c563-cfe0-4e7b-b220-a9331818d993/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-11-02 20:58:29,476 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-02 20:58:29,476 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:58:29,482 INFO L263 TraceCheckSpWp]: Trace formula consists of 1548 conjuncts, 49 conjunts are in the unsatisfiable core [2022-11-02 20:58:29,487 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:58:29,799 INFO L134 CoverageAnalysis]: Checked inductivity of 1679 backedges. 0 proven. 1643 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-11-02 20:58:29,799 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:58:31,087 INFO L134 CoverageAnalysis]: Checked inductivity of 1679 backedges. 0 proven. 1643 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-11-02 20:58:31,090 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [917241996] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:58:31,090 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:58:31,091 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 35, 35] total 87 [2022-11-02 20:58:31,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286662638] [2022-11-02 20:58:31,091 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:58:31,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 89 states [2022-11-02 20:58:31,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:58:31,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2022-11-02 20:58:31,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1661, Invalid=6171, Unknown=0, NotChecked=0, Total=7832 [2022-11-02 20:58:31,093 INFO L87 Difference]: Start difference. First operand 42544 states and 109281 transitions. Second operand has 89 states, 88 states have (on average 4.5) internal successors, (396), 88 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:58:35,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:58:35,257 INFO L93 Difference]: Finished difference Result 160614 states and 402450 transitions. [2022-11-02 20:58:35,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2022-11-02 20:58:35,258 INFO L78 Accepts]: Start accepts. Automaton has has 89 states, 88 states have (on average 4.5) internal successors, (396), 88 states have internal predecessors, (396), 0 states have call successors, (0), 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 213 [2022-11-02 20:58:35,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:58:35,680 INFO L225 Difference]: With dead ends: 160614 [2022-11-02 20:58:35,681 INFO L226 Difference]: Without dead ends: 160614 [2022-11-02 20:58:35,682 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 546 GetRequests, 403 SyntacticMatches, 0 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6699 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=4147, Invalid=16733, Unknown=0, NotChecked=0, Total=20880 [2022-11-02 20:58:35,683 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 1965 mSDsluCounter, 1352 mSDsCounter, 0 mSdLazyCounter, 1805 mSolverCounterSat, 160 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1965 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 1965 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 160 IncrementalHoareTripleChecker+Valid, 1805 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:58:35,683 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1965 Valid, 47 Invalid, 1965 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [160 Valid, 1805 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-02 20:58:36,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160614 states. [2022-11-02 20:58:38,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160614 to 86324. [2022-11-02 20:58:38,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86324 states, 86322 states have (on average 2.5974259169157343) internal successors, (224215), 86323 states have internal predecessors, (224215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:58:39,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86324 states to 86324 states and 224215 transitions. [2022-11-02 20:58:39,435 INFO L78 Accepts]: Start accepts. Automaton has 86324 states and 224215 transitions. Word has length 213 [2022-11-02 20:58:39,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:58:39,436 INFO L495 AbstractCegarLoop]: Abstraction has 86324 states and 224215 transitions. [2022-11-02 20:58:39,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 89 states, 88 states have (on average 4.5) internal successors, (396), 88 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:58:39,437 INFO L276 IsEmpty]: Start isEmpty. Operand 86324 states and 224215 transitions. [2022-11-02 20:58:39,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2022-11-02 20:58:39,579 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:58:39,579 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 19, 18, 18, 18, 18, 18, 6, 6, 6, 6, 6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:58:39,606 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44b3c563-cfe0-4e7b-b220-a9331818d993/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-11-02 20:58:39,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44b3c563-cfe0-4e7b-b220-a9331818d993/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:58:39,780 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-02 20:58:39,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:58:39,781 INFO L85 PathProgramCache]: Analyzing trace with hash -920597866, now seen corresponding path program 11 times [2022-11-02 20:58:39,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:58:39,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846735523] [2022-11-02 20:58:39,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:58:39,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:58:39,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:58:44,261 INFO L134 CoverageAnalysis]: Checked inductivity of 1582 backedges. 0 proven. 1534 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-11-02 20:58:44,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:58:44,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846735523] [2022-11-02 20:58:44,261 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846735523] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:58:44,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1681145954] [2022-11-02 20:58:44,262 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-02 20:58:44,262 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:58:44,262 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44b3c563-cfe0-4e7b-b220-a9331818d993/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:58:44,263 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44b3c563-cfe0-4e7b-b220-a9331818d993/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:58:44,264 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44b3c563-cfe0-4e7b-b220-a9331818d993/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-11-02 20:58:47,524 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 15 check-sat command(s) [2022-11-02 20:58:47,524 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:58:47,537 INFO L263 TraceCheckSpWp]: Trace formula consists of 1586 conjuncts, 51 conjunts are in the unsatisfiable core [2022-11-02 20:58:47,542 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:58:47,820 INFO L134 CoverageAnalysis]: Checked inductivity of 1582 backedges. 0 proven. 1528 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-11-02 20:58:47,820 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:58:48,924 INFO L134 CoverageAnalysis]: Checked inductivity of 1582 backedges. 0 proven. 1528 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-11-02 20:58:48,924 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1681145954] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:58:48,924 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:58:48,925 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 31, 31] total 77 [2022-11-02 20:58:48,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976724946] [2022-11-02 20:58:48,925 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:58:48,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 79 states [2022-11-02 20:58:48,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:58:48,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2022-11-02 20:58:48,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1210, Invalid=4952, Unknown=0, NotChecked=0, Total=6162 [2022-11-02 20:58:48,928 INFO L87 Difference]: Start difference. First operand 86324 states and 224215 transitions. Second operand has 79 states, 78 states have (on average 4.743589743589744) internal successors, (370), 78 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:58:53,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:58:53,780 INFO L93 Difference]: Finished difference Result 290052 states and 742137 transitions. [2022-11-02 20:58:53,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2022-11-02 20:58:53,788 INFO L78 Accepts]: Start accepts. Automaton has has 79 states, 78 states have (on average 4.743589743589744) internal successors, (370), 78 states have internal predecessors, (370), 0 states have call successors, (0), 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 220 [2022-11-02 20:58:53,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:58:54,712 INFO L225 Difference]: With dead ends: 290052 [2022-11-02 20:58:54,712 INFO L226 Difference]: Without dead ends: 290052 [2022-11-02 20:58:54,713 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 558 GetRequests, 428 SyntacticMatches, 0 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5602 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=3221, Invalid=14071, Unknown=0, NotChecked=0, Total=17292 [2022-11-02 20:58:54,714 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 1782 mSDsluCounter, 1056 mSDsCounter, 0 mSdLazyCounter, 1419 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1782 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 1528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 1419 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:58:54,714 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1782 Valid, 35 Invalid, 1528 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 1419 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-02 20:58:55,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290052 states. [2022-11-02 20:59:00,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290052 to 170502. [2022-11-02 20:59:00,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170502 states, 170500 states have (on average 2.610850439882698) internal successors, (445150), 170501 states have internal predecessors, (445150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:59:01,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170502 states to 170502 states and 445150 transitions. [2022-11-02 20:59:01,493 INFO L78 Accepts]: Start accepts. Automaton has 170502 states and 445150 transitions. Word has length 220 [2022-11-02 20:59:01,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:59:01,494 INFO L495 AbstractCegarLoop]: Abstraction has 170502 states and 445150 transitions. [2022-11-02 20:59:01,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 79 states, 78 states have (on average 4.743589743589744) internal successors, (370), 78 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:59:01,494 INFO L276 IsEmpty]: Start isEmpty. Operand 170502 states and 445150 transitions. [2022-11-02 20:59:01,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2022-11-02 20:59:01,830 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:59:01,830 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 21, 21, 20, 20, 20, 20, 20, 5, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:59:01,860 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44b3c563-cfe0-4e7b-b220-a9331818d993/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-11-02 20:59:02,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44b3c563-cfe0-4e7b-b220-a9331818d993/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:59:02,031 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-02 20:59:02,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:59:02,032 INFO L85 PathProgramCache]: Analyzing trace with hash 1924630991, now seen corresponding path program 12 times [2022-11-02 20:59:02,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:59:02,033 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947027494] [2022-11-02 20:59:02,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:59:02,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:59:02,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:07,361 INFO L134 CoverageAnalysis]: Checked inductivity of 1886 backedges. 0 proven. 1841 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-11-02 20:59:07,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:59:07,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947027494] [2022-11-02 20:59:07,362 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947027494] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:59:07,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [79623805] [2022-11-02 20:59:07,362 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-02 20:59:07,362 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:59:07,362 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44b3c563-cfe0-4e7b-b220-a9331818d993/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:59:07,364 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44b3c563-cfe0-4e7b-b220-a9331818d993/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:59:07,367 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44b3c563-cfe0-4e7b-b220-a9331818d993/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-11-02 20:59:15,611 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 21 check-sat command(s) [2022-11-02 20:59:15,611 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:59:15,629 INFO L263 TraceCheckSpWp]: Trace formula consists of 1660 conjuncts, 53 conjunts are in the unsatisfiable core [2022-11-02 20:59:15,636 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:59:15,993 INFO L134 CoverageAnalysis]: Checked inductivity of 1886 backedges. 0 proven. 1841 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-11-02 20:59:15,994 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:59:17,313 INFO L134 CoverageAnalysis]: Checked inductivity of 1886 backedges. 0 proven. 1841 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-11-02 20:59:17,314 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [79623805] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:59:17,314 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:59:17,314 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 36, 36] total 89 [2022-11-02 20:59:17,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428034824] [2022-11-02 20:59:17,314 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:59:17,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 91 states [2022-11-02 20:59:17,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:59:17,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2022-11-02 20:59:17,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1682, Invalid=6508, Unknown=0, NotChecked=0, Total=8190 [2022-11-02 20:59:17,318 INFO L87 Difference]: Start difference. First operand 170502 states and 445150 transitions. Second operand has 91 states, 90 states have (on average 4.5777777777777775) internal successors, (412), 90 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:59:24,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:59:24,398 INFO L93 Difference]: Finished difference Result 469794 states and 1206762 transitions. [2022-11-02 20:59:24,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2022-11-02 20:59:24,403 INFO L78 Accepts]: Start accepts. Automaton has has 91 states, 90 states have (on average 4.5777777777777775) internal successors, (412), 90 states have internal predecessors, (412), 0 states have call successors, (0), 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 230 [2022-11-02 20:59:24,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:59:26,153 INFO L225 Difference]: With dead ends: 469794 [2022-11-02 20:59:26,153 INFO L226 Difference]: Without dead ends: 469794 [2022-11-02 20:59:26,155 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 591 GetRequests, 440 SyntacticMatches, 0 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7590 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=4414, Invalid=18842, Unknown=0, NotChecked=0, Total=23256 [2022-11-02 20:59:26,155 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 2042 mSDsluCounter, 1393 mSDsCounter, 0 mSdLazyCounter, 1865 mSolverCounterSat, 144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2042 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 2009 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 1865 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-02 20:59:26,156 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2042 Valid, 47 Invalid, 2009 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [144 Valid, 1865 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-02 20:59:27,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 469794 states. [2022-11-02 20:59:34,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 469794 to 222846. [2022-11-02 20:59:34,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222846 states, 222844 states have (on average 2.6013444382617434) internal successors, (579694), 222845 states have internal predecessors, (579694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:59:36,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222846 states to 222846 states and 579694 transitions. [2022-11-02 20:59:36,059 INFO L78 Accepts]: Start accepts. Automaton has 222846 states and 579694 transitions. Word has length 230 [2022-11-02 20:59:36,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:59:36,060 INFO L495 AbstractCegarLoop]: Abstraction has 222846 states and 579694 transitions. [2022-11-02 20:59:36,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 91 states, 90 states have (on average 4.5777777777777775) internal successors, (412), 90 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:59:36,061 INFO L276 IsEmpty]: Start isEmpty. Operand 222846 states and 579694 transitions. [2022-11-02 20:59:36,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2022-11-02 20:59:36,512 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:59:36,512 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 21, 21, 21, 21, 21, 5, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:59:36,542 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44b3c563-cfe0-4e7b-b220-a9331818d993/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-11-02 20:59:36,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44b3c563-cfe0-4e7b-b220-a9331818d993/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2022-11-02 20:59:36,713 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-02 20:59:36,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:59:36,714 INFO L85 PathProgramCache]: Analyzing trace with hash 1626669443, now seen corresponding path program 13 times [2022-11-02 20:59:36,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:59:36,714 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261921324] [2022-11-02 20:59:36,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:59:36,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:59:37,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:43,212 INFO L134 CoverageAnalysis]: Checked inductivity of 2071 backedges. 0 proven. 2032 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-11-02 20:59:43,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:59:43,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261921324] [2022-11-02 20:59:43,212 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261921324] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:59:43,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [675185451] [2022-11-02 20:59:43,212 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-02 20:59:43,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:59:43,213 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44b3c563-cfe0-4e7b-b220-a9331818d993/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:59:43,213 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44b3c563-cfe0-4e7b-b220-a9331818d993/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:59:43,215 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44b3c563-cfe0-4e7b-b220-a9331818d993/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-11-02 20:59:43,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:43,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 1722 conjuncts, 55 conjunts are in the unsatisfiable core [2022-11-02 20:59:43,827 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:59:44,135 INFO L134 CoverageAnalysis]: Checked inductivity of 2071 backedges. 0 proven. 2026 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-11-02 20:59:44,135 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:59:45,648 INFO L134 CoverageAnalysis]: Checked inductivity of 2071 backedges. 0 proven. 2026 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-11-02 20:59:45,648 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [675185451] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:59:45,649 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:59:45,649 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 38, 38] total 95 [2022-11-02 20:59:45,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877549621] [2022-11-02 20:59:45,649 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:59:45,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 97 states [2022-11-02 20:59:45,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:59:45,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2022-11-02 20:59:45,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1937, Invalid=7375, Unknown=0, NotChecked=0, Total=9312 [2022-11-02 20:59:45,653 INFO L87 Difference]: Start difference. First operand 222846 states and 579694 transitions. Second operand has 97 states, 96 states have (on average 4.520833333333333) internal successors, (434), 96 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:59:54,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:59:54,776 INFO L93 Difference]: Finished difference Result 686706 states and 1757185 transitions. [2022-11-02 20:59:54,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 121 states. [2022-11-02 20:59:54,777 INFO L78 Accepts]: Start accepts. Automaton has has 97 states, 96 states have (on average 4.520833333333333) internal successors, (434), 96 states have internal predecessors, (434), 0 states have call successors, (0), 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 239 [2022-11-02 20:59:54,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted.