./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted/LexIndexValue-Pointer-1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-crafted/LexIndexValue-Pointer-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY --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 64bit --witnessprinter.graph.data.programhash c47e45e477fce3150ee146c7ef7679da7b29387c5fdc0f2faaf105b700984947 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 08:04:40,359 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 08:04:40,361 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 08:04:40,411 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 08:04:40,412 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 08:04:40,416 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 08:04:40,419 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 08:04:40,424 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 08:04:40,427 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 08:04:40,433 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 08:04:40,434 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 08:04:40,435 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 08:04:40,435 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 08:04:40,436 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 08:04:40,438 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 08:04:40,440 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 08:04:40,441 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 08:04:40,442 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 08:04:40,444 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 08:04:40,447 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 08:04:40,449 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 08:04:40,451 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 08:04:40,452 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 08:04:40,453 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 08:04:40,458 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 08:04:40,459 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 08:04:40,459 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 08:04:40,460 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 08:04:40,461 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 08:04:40,462 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 08:04:40,463 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 08:04:40,464 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 08:04:40,465 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 08:04:40,466 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 08:04:40,468 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 08:04:40,469 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 08:04:40,470 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 08:04:40,470 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 08:04:40,471 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 08:04:40,477 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 08:04:40,480 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 08:04:40,481 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/config/svcomp-Overflow-64bit-Automizer_Default.epf [2021-11-07 08:04:40,533 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 08:04:40,533 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 08:04:40,534 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 08:04:40,541 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 08:04:40,543 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 08:04:40,543 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 08:04:40,543 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 08:04:40,543 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 08:04:40,544 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-07 08:04:40,544 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 08:04:40,545 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 08:04:40,545 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 08:04:40,546 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 08:04:40,546 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 08:04:40,546 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-11-07 08:04:40,546 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 08:04:40,546 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 08:04:40,547 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 08:04:40,547 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 08:04:40,547 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 08:04:40,547 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 08:04:40,547 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 08:04:40,548 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 08:04:40,548 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 08:04:40,548 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 08:04:40,548 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 08:04:40,549 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 08:04:40,549 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 08:04:40,549 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 08:04:40,550 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_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c47e45e477fce3150ee146c7ef7679da7b29387c5fdc0f2faaf105b700984947 [2021-11-07 08:04:40,883 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 08:04:40,922 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 08:04:40,926 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 08:04:40,927 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 08:04:40,929 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 08:04:40,930 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/../../sv-benchmarks/c/termination-crafted/LexIndexValue-Pointer-1.c [2021-11-07 08:04:41,023 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/data/92338cb37/14d41c7261844e49ad19d4485341966c/FLAG7c24c62c6 [2021-11-07 08:04:41,666 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 08:04:41,667 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/sv-benchmarks/c/termination-crafted/LexIndexValue-Pointer-1.c [2021-11-07 08:04:41,675 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/data/92338cb37/14d41c7261844e49ad19d4485341966c/FLAG7c24c62c6 [2021-11-07 08:04:42,036 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/data/92338cb37/14d41c7261844e49ad19d4485341966c [2021-11-07 08:04:42,039 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 08:04:42,041 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 08:04:42,043 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 08:04:42,044 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 08:04:42,048 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 08:04:42,049 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:04:42" (1/1) ... [2021-11-07 08:04:42,051 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21df551a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:04:42, skipping insertion in model container [2021-11-07 08:04:42,051 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:04:42" (1/1) ... [2021-11-07 08:04:42,061 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 08:04:42,076 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 08:04:42,256 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 08:04:42,265 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 08:04:42,278 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 08:04:42,293 INFO L208 MainTranslator]: Completed translation [2021-11-07 08:04:42,294 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:04:42 WrapperNode [2021-11-07 08:04:42,294 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 08:04:42,295 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 08:04:42,295 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 08:04:42,295 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 08:04:42,303 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:04:42" (1/1) ... [2021-11-07 08:04:42,309 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:04:42" (1/1) ... [2021-11-07 08:04:42,330 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 08:04:42,331 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 08:04:42,331 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 08:04:42,331 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 08:04:42,341 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:04:42" (1/1) ... [2021-11-07 08:04:42,342 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:04:42" (1/1) ... [2021-11-07 08:04:42,343 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:04:42" (1/1) ... [2021-11-07 08:04:42,344 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:04:42" (1/1) ... [2021-11-07 08:04:42,350 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:04:42" (1/1) ... [2021-11-07 08:04:42,355 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:04:42" (1/1) ... [2021-11-07 08:04:42,357 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:04:42" (1/1) ... [2021-11-07 08:04:42,359 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 08:04:42,360 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 08:04:42,360 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 08:04:42,361 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 08:04:42,362 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:04:42" (1/1) ... [2021-11-07 08:04:42,376 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 08:04:42,390 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:04:42,414 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 08:04:42,426 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 08:04:42,473 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-07 08:04:42,474 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 08:04:42,476 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 08:04:42,477 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 08:04:42,477 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-07 08:04:42,793 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 08:04:42,794 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-11-07 08:04:42,796 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:04:42 BoogieIcfgContainer [2021-11-07 08:04:42,796 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 08:04:42,798 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 08:04:42,798 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 08:04:42,818 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 08:04:42,819 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 08:04:42" (1/3) ... [2021-11-07 08:04:42,820 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14e52e7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:04:42, skipping insertion in model container [2021-11-07 08:04:42,820 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:04:42" (2/3) ... [2021-11-07 08:04:42,820 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14e52e7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:04:42, skipping insertion in model container [2021-11-07 08:04:42,821 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:04:42" (3/3) ... [2021-11-07 08:04:42,822 INFO L111 eAbstractionObserver]: Analyzing ICFG LexIndexValue-Pointer-1.c [2021-11-07 08:04:42,829 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 08:04:42,830 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-11-07 08:04:42,885 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 08:04:42,893 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 08:04:42,893 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-11-07 08:04:42,910 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 16 states have (on average 1.625) internal successors, (26), 20 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:04:42,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-07 08:04:42,916 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:04:42,916 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-07 08:04:42,917 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-07 08:04:42,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:04:42,924 INFO L85 PathProgramCache]: Analyzing trace with hash 28698728, now seen corresponding path program 1 times [2021-11-07 08:04:42,935 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:04:42,935 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462452368] [2021-11-07 08:04:42,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:04:42,937 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:04:43,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:04:43,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:04:43,200 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:04:43,201 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462452368] [2021-11-07 08:04:43,202 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462452368] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:04:43,202 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:04:43,203 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 08:04:43,205 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800487049] [2021-11-07 08:04:43,213 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 08:04:43,214 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:04:43,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 08:04:43,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 08:04:43,233 INFO L87 Difference]: Start difference. First operand has 21 states, 16 states have (on average 1.625) internal successors, (26), 20 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:04:43,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:04:43,335 INFO L93 Difference]: Finished difference Result 40 states and 50 transitions. [2021-11-07 08:04:43,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 08:04:43,338 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-11-07 08:04:43,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:04:43,348 INFO L225 Difference]: With dead ends: 40 [2021-11-07 08:04:43,349 INFO L226 Difference]: Without dead ends: 21 [2021-11-07 08:04:43,352 INFO L786 BasicCegarLoop]: 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 [2021-11-07 08:04:43,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-11-07 08:04:43,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2021-11-07 08:04:43,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 17 states have (on average 1.411764705882353) internal successors, (24), 20 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:04:43,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions. [2021-11-07 08:04:43,395 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 24 transitions. Word has length 5 [2021-11-07 08:04:43,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:04:43,397 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 24 transitions. [2021-11-07 08:04:43,398 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:04:43,399 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2021-11-07 08:04:43,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-07 08:04:43,400 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:04:43,400 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2021-11-07 08:04:43,400 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 08:04:43,401 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-07 08:04:43,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:04:43,406 INFO L85 PathProgramCache]: Analyzing trace with hash -363792156, now seen corresponding path program 1 times [2021-11-07 08:04:43,407 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:04:43,407 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836521589] [2021-11-07 08:04:43,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:04:43,408 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:04:43,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:04:43,458 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 08:04:43,459 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:04:43,459 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836521589] [2021-11-07 08:04:43,460 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836521589] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:04:43,460 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:04:43,460 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 08:04:43,461 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48776632] [2021-11-07 08:04:43,462 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 08:04:43,463 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:04:43,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 08:04:43,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 08:04:43,465 INFO L87 Difference]: Start difference. First operand 21 states and 24 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:04:43,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:04:43,504 INFO L93 Difference]: Finished difference Result 21 states and 24 transitions. [2021-11-07 08:04:43,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 08:04:43,505 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-07 08:04:43,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:04:43,507 INFO L225 Difference]: With dead ends: 21 [2021-11-07 08:04:43,507 INFO L226 Difference]: Without dead ends: 20 [2021-11-07 08:04:43,508 INFO L786 BasicCegarLoop]: 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 [2021-11-07 08:04:43,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-11-07 08:04:43,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2021-11-07 08:04:43,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 19 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:04:43,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2021-11-07 08:04:43,521 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 9 [2021-11-07 08:04:43,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:04:43,523 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2021-11-07 08:04:43,524 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:04:43,524 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2021-11-07 08:04:43,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-07 08:04:43,525 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:04:43,526 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1] [2021-11-07 08:04:43,526 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 08:04:43,527 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-07 08:04:43,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:04:43,529 INFO L85 PathProgramCache]: Analyzing trace with hash 1607345098, now seen corresponding path program 1 times [2021-11-07 08:04:43,530 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:04:43,530 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846014619] [2021-11-07 08:04:43,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:04:43,531 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:04:43,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:04:43,673 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:04:43,673 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:04:43,674 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846014619] [2021-11-07 08:04:43,674 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846014619] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:04:43,674 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [760578491] [2021-11-07 08:04:43,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:04:43,675 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:04:43,675 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:04:43,682 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:04:43,684 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-07 08:04:43,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:04:43,726 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 08:04:43,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:04:43,885 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:04:43,886 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [760578491] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:04:43,886 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-07 08:04:43,886 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2021-11-07 08:04:43,887 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112443391] [2021-11-07 08:04:43,887 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 08:04:43,887 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:04:43,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 08:04:43,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-07 08:04:43,889 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand has 6 states, 5 states have (on average 2.0) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:04:43,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:04:43,967 INFO L93 Difference]: Finished difference Result 20 states and 23 transitions. [2021-11-07 08:04:43,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 08:04:43,968 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-11-07 08:04:43,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:04:43,969 INFO L225 Difference]: With dead ends: 20 [2021-11-07 08:04:43,969 INFO L226 Difference]: Without dead ends: 19 [2021-11-07 08:04:43,970 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-07 08:04:43,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-11-07 08:04:43,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 16. [2021-11-07 08:04:43,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 15 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:04:43,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 19 transitions. [2021-11-07 08:04:43,988 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 19 transitions. Word has length 10 [2021-11-07 08:04:43,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:04:43,989 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 19 transitions. [2021-11-07 08:04:43,989 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:04:43,990 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 19 transitions. [2021-11-07 08:04:43,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-07 08:04:43,990 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:04:43,991 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:04:44,022 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-07 08:04:44,191 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:04:44,192 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-07 08:04:44,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:04:44,193 INFO L85 PathProgramCache]: Analyzing trace with hash -1707960817, now seen corresponding path program 1 times [2021-11-07 08:04:44,193 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:04:44,193 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105023989] [2021-11-07 08:04:44,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:04:44,194 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:04:44,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:04:44,288 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:04:44,288 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:04:44,289 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105023989] [2021-11-07 08:04:44,289 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105023989] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:04:44,289 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [346353260] [2021-11-07 08:04:44,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:04:44,290 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:04:44,290 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:04:44,297 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:04:44,330 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-07 08:04:44,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:04:44,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 08:04:44,382 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:04:44,516 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:04:44,516 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [346353260] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:04:44,517 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 08:04:44,517 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2021-11-07 08:04:44,517 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670919335] [2021-11-07 08:04:44,518 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 08:04:44,518 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:04:44,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 08:04:44,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-07 08:04:44,519 INFO L87 Difference]: Start difference. First operand 16 states and 19 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:04:44,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:04:44,575 INFO L93 Difference]: Finished difference Result 32 states and 38 transitions. [2021-11-07 08:04:44,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 08:04:44,578 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-07 08:04:44,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:04:44,579 INFO L225 Difference]: With dead ends: 32 [2021-11-07 08:04:44,579 INFO L226 Difference]: Without dead ends: 23 [2021-11-07 08:04:44,580 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-07 08:04:44,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-11-07 08:04:44,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 20. [2021-11-07 08:04:44,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 19 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:04:44,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2021-11-07 08:04:44,588 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 13 [2021-11-07 08:04:44,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:04:44,594 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2021-11-07 08:04:44,594 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:04:44,595 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2021-11-07 08:04:44,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-07 08:04:44,596 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:04:44,596 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:04:44,620 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-11-07 08:04:44,796 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:04:44,797 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-07 08:04:44,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:04:44,798 INFO L85 PathProgramCache]: Analyzing trace with hash -807179637, now seen corresponding path program 2 times [2021-11-07 08:04:44,798 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:04:44,798 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032307855] [2021-11-07 08:04:44,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:04:44,799 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:04:44,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:04:44,920 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:04:44,921 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:04:44,921 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032307855] [2021-11-07 08:04:44,921 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032307855] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:04:44,921 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1349254012] [2021-11-07 08:04:44,922 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 08:04:44,922 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:04:44,922 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:04:44,923 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:04:44,952 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-07 08:04:44,996 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 08:04:44,996 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 08:04:44,997 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 08:04:44,999 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:04:45,111 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:04:45,112 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1349254012] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:04:45,112 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 08:04:45,112 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2021-11-07 08:04:45,113 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625422284] [2021-11-07 08:04:45,113 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-07 08:04:45,113 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:04:45,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-07 08:04:45,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-07 08:04:45,115 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:04:45,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:04:45,162 INFO L93 Difference]: Finished difference Result 36 states and 42 transitions. [2021-11-07 08:04:45,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 08:04:45,163 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-11-07 08:04:45,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:04:45,164 INFO L225 Difference]: With dead ends: 36 [2021-11-07 08:04:45,164 INFO L226 Difference]: Without dead ends: 27 [2021-11-07 08:04:45,165 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-11-07 08:04:45,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-11-07 08:04:45,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 24. [2021-11-07 08:04:45,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 23 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:04:45,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2021-11-07 08:04:45,171 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 17 [2021-11-07 08:04:45,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:04:45,171 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2021-11-07 08:04:45,172 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:04:45,172 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2021-11-07 08:04:45,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-07 08:04:45,173 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:04:45,173 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:04:45,214 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-07 08:04:45,400 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:04:45,400 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-07 08:04:45,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:04:45,401 INFO L85 PathProgramCache]: Analyzing trace with hash 1608360199, now seen corresponding path program 3 times [2021-11-07 08:04:45,401 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:04:45,402 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902271373] [2021-11-07 08:04:45,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:04:45,403 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:04:45,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:04:45,523 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:04:45,524 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:04:45,525 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902271373] [2021-11-07 08:04:45,525 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902271373] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:04:45,525 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [76494658] [2021-11-07 08:04:45,526 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 08:04:45,526 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:04:45,526 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:04:45,528 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:04:45,530 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-07 08:04:45,593 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-11-07 08:04:45,593 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 08:04:45,594 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-07 08:04:45,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:04:45,715 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:04:45,715 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [76494658] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:04:45,715 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 08:04:45,716 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2021-11-07 08:04:45,716 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108249144] [2021-11-07 08:04:45,717 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-07 08:04:45,717 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:04:45,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-07 08:04:45,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-11-07 08:04:45,718 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand has 11 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:04:45,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:04:45,782 INFO L93 Difference]: Finished difference Result 40 states and 46 transitions. [2021-11-07 08:04:45,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-07 08:04:45,783 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-11-07 08:04:45,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:04:45,784 INFO L225 Difference]: With dead ends: 40 [2021-11-07 08:04:45,784 INFO L226 Difference]: Without dead ends: 31 [2021-11-07 08:04:45,785 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2021-11-07 08:04:45,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-11-07 08:04:45,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 28. [2021-11-07 08:04:45,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 26 states have (on average 1.1923076923076923) internal successors, (31), 27 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:04:45,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2021-11-07 08:04:45,791 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 21 [2021-11-07 08:04:45,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:04:45,794 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2021-11-07 08:04:45,795 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:04:45,796 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2021-11-07 08:04:45,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-07 08:04:45,798 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:04:45,800 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:04:45,834 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-07 08:04:46,014 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-11-07 08:04:46,015 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-07 08:04:46,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:04:46,015 INFO L85 PathProgramCache]: Analyzing trace with hash 1654667651, now seen corresponding path program 4 times [2021-11-07 08:04:46,016 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:04:46,016 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546589443] [2021-11-07 08:04:46,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:04:46,016 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:04:46,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:04:46,179 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:04:46,180 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:04:46,180 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546589443] [2021-11-07 08:04:46,180 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546589443] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:04:46,181 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1345492409] [2021-11-07 08:04:46,181 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-07 08:04:46,181 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:04:46,181 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:04:46,188 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:04:46,204 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-07 08:04:46,265 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-07 08:04:46,265 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 08:04:46,266 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-07 08:04:46,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:04:46,392 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:04:46,392 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1345492409] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:04:46,393 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 08:04:46,393 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 13 [2021-11-07 08:04:46,393 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021292996] [2021-11-07 08:04:46,394 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-07 08:04:46,394 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:04:46,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-07 08:04:46,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-11-07 08:04:46,396 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand has 13 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 13 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:04:46,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:04:46,497 INFO L93 Difference]: Finished difference Result 44 states and 50 transitions. [2021-11-07 08:04:46,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-07 08:04:46,498 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 13 states have internal predecessors, (30), 0 states have call successors, (0), 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 [2021-11-07 08:04:46,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:04:46,500 INFO L225 Difference]: With dead ends: 44 [2021-11-07 08:04:46,500 INFO L226 Difference]: Without dead ends: 35 [2021-11-07 08:04:46,501 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2021-11-07 08:04:46,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-11-07 08:04:46,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 32. [2021-11-07 08:04:46,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 30 states have (on average 1.1666666666666667) internal successors, (35), 31 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:04:46,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2021-11-07 08:04:46,521 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 25 [2021-11-07 08:04:46,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:04:46,521 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2021-11-07 08:04:46,521 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 13 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:04:46,522 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2021-11-07 08:04:46,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-07 08:04:46,524 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:04:46,524 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:04:46,554 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-07 08:04:46,740 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:04:46,740 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-07 08:04:46,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:04:46,741 INFO L85 PathProgramCache]: Analyzing trace with hash -1725287425, now seen corresponding path program 5 times [2021-11-07 08:04:46,742 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:04:46,742 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207259360] [2021-11-07 08:04:46,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:04:46,743 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:04:46,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:04:46,889 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:04:46,890 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:04:46,890 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207259360] [2021-11-07 08:04:46,890 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207259360] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:04:46,897 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [709204732] [2021-11-07 08:04:46,898 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-07 08:04:46,898 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:04:46,898 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:04:46,904 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:04:46,932 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-07 08:04:47,005 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-11-07 08:04:47,005 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 08:04:47,006 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-07 08:04:47,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:04:47,166 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:04:47,167 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [709204732] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:04:47,167 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 08:04:47,167 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 15 [2021-11-07 08:04:47,172 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922792444] [2021-11-07 08:04:47,173 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-07 08:04:47,173 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:04:47,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-07 08:04:47,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2021-11-07 08:04:47,175 INFO L87 Difference]: Start difference. First operand 32 states and 35 transitions. Second operand has 15 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 15 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:04:47,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:04:47,285 INFO L93 Difference]: Finished difference Result 48 states and 54 transitions. [2021-11-07 08:04:47,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-07 08:04:47,288 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 15 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-11-07 08:04:47,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:04:47,294 INFO L225 Difference]: With dead ends: 48 [2021-11-07 08:04:47,294 INFO L226 Difference]: Without dead ends: 39 [2021-11-07 08:04:47,295 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=120, Invalid=260, Unknown=0, NotChecked=0, Total=380 [2021-11-07 08:04:47,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-11-07 08:04:47,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 36. [2021-11-07 08:04:47,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 34 states have (on average 1.1470588235294117) internal successors, (39), 35 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:04:47,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 39 transitions. [2021-11-07 08:04:47,306 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 39 transitions. Word has length 29 [2021-11-07 08:04:47,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:04:47,306 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 39 transitions. [2021-11-07 08:04:47,307 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 15 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:04:47,307 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 39 transitions. [2021-11-07 08:04:47,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-07 08:04:47,308 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:04:47,308 INFO L513 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:04:47,332 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-07 08:04:47,510 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-11-07 08:04:47,511 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-07 08:04:47,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:04:47,511 INFO L85 PathProgramCache]: Analyzing trace with hash 754618491, now seen corresponding path program 6 times [2021-11-07 08:04:47,511 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:04:47,512 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573175065] [2021-11-07 08:04:47,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:04:47,512 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:04:47,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:04:47,684 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:04:47,684 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:04:47,684 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573175065] [2021-11-07 08:04:47,684 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573175065] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:04:47,685 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1352935073] [2021-11-07 08:04:47,685 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-07 08:04:47,685 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:04:47,685 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:04:47,688 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:04:47,708 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-07 08:04:47,794 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-11-07 08:04:47,795 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 08:04:47,796 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-07 08:04:47,798 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:04:47,957 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:04:47,958 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1352935073] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:04:47,963 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 08:04:47,963 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 17 [2021-11-07 08:04:47,967 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020107924] [2021-11-07 08:04:47,968 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-07 08:04:47,970 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:04:47,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-07 08:04:47,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2021-11-07 08:04:47,972 INFO L87 Difference]: Start difference. First operand 36 states and 39 transitions. Second operand has 17 states, 17 states have (on average 2.235294117647059) internal successors, (38), 17 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:04:48,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:04:48,108 INFO L93 Difference]: Finished difference Result 52 states and 58 transitions. [2021-11-07 08:04:48,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-07 08:04:48,108 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.235294117647059) internal successors, (38), 17 states have internal predecessors, (38), 0 states have call successors, (0), 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 33 [2021-11-07 08:04:48,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:04:48,112 INFO L225 Difference]: With dead ends: 52 [2021-11-07 08:04:48,112 INFO L226 Difference]: Without dead ends: 43 [2021-11-07 08:04:48,113 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=157, Invalid=349, Unknown=0, NotChecked=0, Total=506 [2021-11-07 08:04:48,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-11-07 08:04:48,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 40. [2021-11-07 08:04:48,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 38 states have (on average 1.131578947368421) internal successors, (43), 39 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:04:48,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 43 transitions. [2021-11-07 08:04:48,133 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 43 transitions. Word has length 33 [2021-11-07 08:04:48,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:04:48,135 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 43 transitions. [2021-11-07 08:04:48,136 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.235294117647059) internal successors, (38), 17 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:04:48,136 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 43 transitions. [2021-11-07 08:04:48,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-07 08:04:48,137 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:04:48,137 INFO L513 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:04:48,180 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-07 08:04:48,361 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-11-07 08:04:48,362 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-07 08:04:48,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:04:48,362 INFO L85 PathProgramCache]: Analyzing trace with hash 1880116983, now seen corresponding path program 7 times [2021-11-07 08:04:48,362 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:04:48,363 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119522926] [2021-11-07 08:04:48,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:04:48,363 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:04:48,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:04:48,584 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:04:48,584 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:04:48,585 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119522926] [2021-11-07 08:04:48,585 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119522926] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:04:48,585 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1514380184] [2021-11-07 08:04:48,585 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-07 08:04:48,586 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:04:48,586 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:04:48,587 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:04:48,589 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-07 08:04:48,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:04:48,695 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-07 08:04:48,697 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:04:48,828 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:04:48,828 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1514380184] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:04:48,829 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 08:04:48,829 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 19 [2021-11-07 08:04:48,829 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614659396] [2021-11-07 08:04:48,830 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-07 08:04:48,830 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:04:48,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-07 08:04:48,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2021-11-07 08:04:48,831 INFO L87 Difference]: Start difference. First operand 40 states and 43 transitions. Second operand has 19 states, 19 states have (on average 2.210526315789474) internal successors, (42), 19 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:04:48,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:04:48,957 INFO L93 Difference]: Finished difference Result 56 states and 62 transitions. [2021-11-07 08:04:48,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-07 08:04:48,964 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.210526315789474) internal successors, (42), 19 states have internal predecessors, (42), 0 states have call successors, (0), 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 37 [2021-11-07 08:04:48,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:04:48,966 INFO L225 Difference]: With dead ends: 56 [2021-11-07 08:04:48,966 INFO L226 Difference]: Without dead ends: 47 [2021-11-07 08:04:48,968 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=199, Invalid=451, Unknown=0, NotChecked=0, Total=650 [2021-11-07 08:04:48,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-11-07 08:04:48,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 44. [2021-11-07 08:04:48,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 42 states have (on average 1.119047619047619) internal successors, (47), 43 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:04:48,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 47 transitions. [2021-11-07 08:04:48,980 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 47 transitions. Word has length 37 [2021-11-07 08:04:48,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:04:48,980 INFO L470 AbstractCegarLoop]: Abstraction has 44 states and 47 transitions. [2021-11-07 08:04:48,981 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.210526315789474) internal successors, (42), 19 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:04:48,981 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 47 transitions. [2021-11-07 08:04:48,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-07 08:04:48,988 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:04:48,988 INFO L513 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:04:49,026 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-07 08:04:49,188 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:04:49,189 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-07 08:04:49,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:04:49,190 INFO L85 PathProgramCache]: Analyzing trace with hash -1662357645, now seen corresponding path program 8 times [2021-11-07 08:04:49,190 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:04:49,190 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175285968] [2021-11-07 08:04:49,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:04:49,190 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:04:49,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:04:49,388 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:04:49,388 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:04:49,388 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175285968] [2021-11-07 08:04:49,389 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175285968] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:04:49,389 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [656490183] [2021-11-07 08:04:49,389 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 08:04:49,389 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:04:49,390 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:04:49,390 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:04:49,401 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-07 08:04:49,520 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 08:04:49,521 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 08:04:49,522 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-07 08:04:49,525 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:04:49,686 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:04:49,686 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [656490183] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:04:49,686 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 08:04:49,687 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 21 [2021-11-07 08:04:49,687 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3438422] [2021-11-07 08:04:49,687 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-07 08:04:49,688 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:04:49,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-07 08:04:49,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2021-11-07 08:04:49,693 INFO L87 Difference]: Start difference. First operand 44 states and 47 transitions. Second operand has 21 states, 21 states have (on average 2.1904761904761907) internal successors, (46), 21 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:04:49,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:04:49,852 INFO L93 Difference]: Finished difference Result 60 states and 66 transitions. [2021-11-07 08:04:49,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-07 08:04:49,853 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.1904761904761907) internal successors, (46), 21 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2021-11-07 08:04:49,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:04:49,854 INFO L225 Difference]: With dead ends: 60 [2021-11-07 08:04:49,854 INFO L226 Difference]: Without dead ends: 51 [2021-11-07 08:04:49,855 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=246, Invalid=566, Unknown=0, NotChecked=0, Total=812 [2021-11-07 08:04:49,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-11-07 08:04:49,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 48. [2021-11-07 08:04:49,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 46 states have (on average 1.108695652173913) internal successors, (51), 47 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:04:49,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 51 transitions. [2021-11-07 08:04:49,863 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 51 transitions. Word has length 41 [2021-11-07 08:04:49,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:04:49,865 INFO L470 AbstractCegarLoop]: Abstraction has 48 states and 51 transitions. [2021-11-07 08:04:49,866 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.1904761904761907) internal successors, (46), 21 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:04:49,866 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 51 transitions. [2021-11-07 08:04:49,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-07 08:04:49,870 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:04:49,871 INFO L513 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:04:49,910 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2021-11-07 08:04:50,084 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-11-07 08:04:50,084 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-07 08:04:50,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:04:50,085 INFO L85 PathProgramCache]: Analyzing trace with hash -1769475601, now seen corresponding path program 9 times [2021-11-07 08:04:50,085 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:04:50,085 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013775573] [2021-11-07 08:04:50,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:04:50,085 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:04:50,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:04:50,327 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:04:50,327 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:04:50,327 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013775573] [2021-11-07 08:04:50,327 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013775573] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:04:50,327 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2072448375] [2021-11-07 08:04:50,327 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 08:04:50,328 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:04:50,328 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:04:50,329 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:04:50,340 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-07 08:04:50,505 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2021-11-07 08:04:50,506 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 08:04:50,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-07 08:04:50,510 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:04:50,711 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:04:50,711 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2072448375] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:04:50,712 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 08:04:50,712 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 23 [2021-11-07 08:04:50,712 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025251274] [2021-11-07 08:04:50,713 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-11-07 08:04:50,713 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:04:50,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-11-07 08:04:50,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2021-11-07 08:04:50,715 INFO L87 Difference]: Start difference. First operand 48 states and 51 transitions. Second operand has 23 states, 23 states have (on average 2.1739130434782608) internal successors, (50), 23 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:04:50,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:04:50,884 INFO L93 Difference]: Finished difference Result 64 states and 70 transitions. [2021-11-07 08:04:50,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-07 08:04:50,885 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.1739130434782608) internal successors, (50), 23 states have internal predecessors, (50), 0 states have call successors, (0), 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 [2021-11-07 08:04:50,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:04:50,886 INFO L225 Difference]: With dead ends: 64 [2021-11-07 08:04:50,886 INFO L226 Difference]: Without dead ends: 55 [2021-11-07 08:04:50,887 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=298, Invalid=694, Unknown=0, NotChecked=0, Total=992 [2021-11-07 08:04:50,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2021-11-07 08:04:50,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 52. [2021-11-07 08:04:50,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 50 states have (on average 1.1) internal successors, (55), 51 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:04:50,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 55 transitions. [2021-11-07 08:04:50,892 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 55 transitions. Word has length 45 [2021-11-07 08:04:50,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:04:50,893 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 55 transitions. [2021-11-07 08:04:50,893 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.1739130434782608) internal successors, (50), 23 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:04:50,893 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 55 transitions. [2021-11-07 08:04:50,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-07 08:04:50,894 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:04:50,894 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:04:50,933 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-07 08:04:51,116 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:04:51,116 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-07 08:04:51,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:04:51,117 INFO L85 PathProgramCache]: Analyzing trace with hash -1469589909, now seen corresponding path program 10 times [2021-11-07 08:04:51,117 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:04:51,117 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453594747] [2021-11-07 08:04:51,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:04:51,117 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:04:51,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:04:51,387 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:04:51,388 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:04:51,388 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453594747] [2021-11-07 08:04:51,388 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453594747] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:04:51,388 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [812939892] [2021-11-07 08:04:51,388 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-07 08:04:51,388 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:04:51,388 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:04:51,389 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:04:51,390 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-07 08:04:51,518 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-07 08:04:51,518 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 08:04:51,520 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-07 08:04:51,522 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:04:51,690 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:04:51,691 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [812939892] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:04:51,691 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 08:04:51,691 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 25 [2021-11-07 08:04:51,693 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201915272] [2021-11-07 08:04:51,693 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-11-07 08:04:51,694 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:04:51,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-11-07 08:04:51,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=432, Unknown=0, NotChecked=0, Total=600 [2021-11-07 08:04:51,696 INFO L87 Difference]: Start difference. First operand 52 states and 55 transitions. Second operand has 25 states, 25 states have (on average 2.16) internal successors, (54), 25 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:04:51,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:04:51,894 INFO L93 Difference]: Finished difference Result 68 states and 74 transitions. [2021-11-07 08:04:51,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-07 08:04:51,895 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.16) internal successors, (54), 25 states have internal predecessors, (54), 0 states have call successors, (0), 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 49 [2021-11-07 08:04:51,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:04:51,895 INFO L225 Difference]: With dead ends: 68 [2021-11-07 08:04:51,895 INFO L226 Difference]: Without dead ends: 59 [2021-11-07 08:04:51,896 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=355, Invalid=835, Unknown=0, NotChecked=0, Total=1190 [2021-11-07 08:04:51,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-11-07 08:04:51,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 56. [2021-11-07 08:04:51,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 54 states have (on average 1.0925925925925926) internal successors, (59), 55 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:04:51,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 59 transitions. [2021-11-07 08:04:51,900 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 59 transitions. Word has length 49 [2021-11-07 08:04:51,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:04:51,901 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 59 transitions. [2021-11-07 08:04:51,901 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.16) internal successors, (54), 25 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:04:51,901 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 59 transitions. [2021-11-07 08:04:51,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-07 08:04:51,902 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:04:51,902 INFO L513 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:04:51,941 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-07 08:04:52,124 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:04:52,124 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-07 08:04:52,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:04:52,125 INFO L85 PathProgramCache]: Analyzing trace with hash 1183390951, now seen corresponding path program 11 times [2021-11-07 08:04:52,125 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:04:52,125 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849464143] [2021-11-07 08:04:52,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:04:52,125 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:04:52,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:04:52,431 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:04:52,432 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:04:52,432 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849464143] [2021-11-07 08:04:52,432 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849464143] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:04:52,432 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1612227426] [2021-11-07 08:04:52,432 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-07 08:04:52,432 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:04:52,432 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:04:52,433 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:04:52,459 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-07 08:04:52,650 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2021-11-07 08:04:52,651 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 08:04:52,652 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-07 08:04:52,655 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:04:52,902 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:04:52,902 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1612227426] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:04:52,902 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 08:04:52,902 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 27 [2021-11-07 08:04:52,903 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167250330] [2021-11-07 08:04:52,904 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-11-07 08:04:52,904 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:04:52,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-11-07 08:04:52,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=507, Unknown=0, NotChecked=0, Total=702 [2021-11-07 08:04:52,906 INFO L87 Difference]: Start difference. First operand 56 states and 59 transitions. Second operand has 27 states, 27 states have (on average 2.1481481481481484) internal successors, (58), 27 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:04:53,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:04:53,137 INFO L93 Difference]: Finished difference Result 72 states and 78 transitions. [2021-11-07 08:04:53,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-07 08:04:53,138 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.1481481481481484) internal successors, (58), 27 states have internal predecessors, (58), 0 states have call successors, (0), 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 53 [2021-11-07 08:04:53,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:04:53,139 INFO L225 Difference]: With dead ends: 72 [2021-11-07 08:04:53,139 INFO L226 Difference]: Without dead ends: 63 [2021-11-07 08:04:53,140 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=417, Invalid=989, Unknown=0, NotChecked=0, Total=1406 [2021-11-07 08:04:53,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2021-11-07 08:04:53,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 60. [2021-11-07 08:04:53,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 58 states have (on average 1.0862068965517242) internal successors, (63), 59 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:04:53,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 63 transitions. [2021-11-07 08:04:53,146 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 63 transitions. Word has length 53 [2021-11-07 08:04:53,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:04:53,146 INFO L470 AbstractCegarLoop]: Abstraction has 60 states and 63 transitions. [2021-11-07 08:04:53,146 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.1481481481481484) internal successors, (58), 27 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:04:53,146 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 63 transitions. [2021-11-07 08:04:53,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-07 08:04:53,147 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:04:53,147 INFO L513 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:04:53,181 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-07 08:04:53,360 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-11-07 08:04:53,361 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-07 08:04:53,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:04:53,361 INFO L85 PathProgramCache]: Analyzing trace with hash -848640669, now seen corresponding path program 12 times [2021-11-07 08:04:53,361 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:04:53,362 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845495255] [2021-11-07 08:04:53,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:04:53,362 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:04:53,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:04:53,679 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:04:53,679 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:04:53,680 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845495255] [2021-11-07 08:04:53,680 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845495255] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:04:53,680 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2134427135] [2021-11-07 08:04:53,680 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-07 08:04:53,680 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:04:53,680 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:04:53,681 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:04:53,683 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-07 08:04:54,030 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2021-11-07 08:04:54,031 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 08:04:54,033 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 26 conjunts are in the unsatisfiable core [2021-11-07 08:04:54,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:04:54,300 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:04:54,300 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2134427135] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:04:54,301 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 08:04:54,301 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 29 [2021-11-07 08:04:54,301 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300500099] [2021-11-07 08:04:54,302 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-11-07 08:04:54,302 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:04:54,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-11-07 08:04:54,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=224, Invalid=588, Unknown=0, NotChecked=0, Total=812 [2021-11-07 08:04:54,305 INFO L87 Difference]: Start difference. First operand 60 states and 63 transitions. Second operand has 29 states, 29 states have (on average 2.1379310344827585) internal successors, (62), 29 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) [2021-11-07 08:04:54,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:04:54,535 INFO L93 Difference]: Finished difference Result 76 states and 82 transitions. [2021-11-07 08:04:54,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-11-07 08:04:54,544 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.1379310344827585) internal successors, (62), 29 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 57 [2021-11-07 08:04:54,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:04:54,545 INFO L225 Difference]: With dead ends: 76 [2021-11-07 08:04:54,545 INFO L226 Difference]: Without dead ends: 67 [2021-11-07 08:04:54,546 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 285 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=484, Invalid=1156, Unknown=0, NotChecked=0, Total=1640 [2021-11-07 08:04:54,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2021-11-07 08:04:54,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 64. [2021-11-07 08:04:54,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 62 states have (on average 1.0806451612903225) internal successors, (67), 63 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:04:54,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 67 transitions. [2021-11-07 08:04:54,551 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 67 transitions. Word has length 57 [2021-11-07 08:04:54,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:04:54,552 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 67 transitions. [2021-11-07 08:04:54,552 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.1379310344827585) internal successors, (62), 29 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) [2021-11-07 08:04:54,552 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 67 transitions. [2021-11-07 08:04:54,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-07 08:04:54,553 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:04:54,553 INFO L513 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:04:54,593 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-11-07 08:04:54,780 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-11-07 08:04:54,780 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-07 08:04:54,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:04:54,781 INFO L85 PathProgramCache]: Analyzing trace with hash 1108070367, now seen corresponding path program 13 times [2021-11-07 08:04:54,781 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:04:54,781 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483392935] [2021-11-07 08:04:54,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:04:54,781 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:04:54,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:04:55,195 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:04:55,195 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:04:55,195 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483392935] [2021-11-07 08:04:55,195 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483392935] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:04:55,195 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [590466714] [2021-11-07 08:04:55,195 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-07 08:04:55,196 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:04:55,196 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:04:55,197 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:04:55,208 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-07 08:04:55,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:04:55,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 28 conjunts are in the unsatisfiable core [2021-11-07 08:04:55,428 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:04:55,662 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:04:55,662 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [590466714] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:04:55,663 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 08:04:55,663 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 31 [2021-11-07 08:04:55,663 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119471098] [2021-11-07 08:04:55,665 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-11-07 08:04:55,665 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:04:55,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-11-07 08:04:55,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=675, Unknown=0, NotChecked=0, Total=930 [2021-11-07 08:04:55,667 INFO L87 Difference]: Start difference. First operand 64 states and 67 transitions. Second operand has 31 states, 31 states have (on average 2.129032258064516) internal successors, (66), 31 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:04:55,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:04:55,905 INFO L93 Difference]: Finished difference Result 80 states and 86 transitions. [2021-11-07 08:04:55,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-11-07 08:04:55,906 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.129032258064516) internal successors, (66), 31 states have internal predecessors, (66), 0 states have call successors, (0), 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 61 [2021-11-07 08:04:55,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:04:55,906 INFO L225 Difference]: With dead ends: 80 [2021-11-07 08:04:55,907 INFO L226 Difference]: Without dead ends: 71 [2021-11-07 08:04:55,908 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=556, Invalid=1336, Unknown=0, NotChecked=0, Total=1892 [2021-11-07 08:04:55,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2021-11-07 08:04:55,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 68. [2021-11-07 08:04:55,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 66 states have (on average 1.0757575757575757) internal successors, (71), 67 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:04:55,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 71 transitions. [2021-11-07 08:04:55,912 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 71 transitions. Word has length 61 [2021-11-07 08:04:55,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:04:55,913 INFO L470 AbstractCegarLoop]: Abstraction has 68 states and 71 transitions. [2021-11-07 08:04:55,913 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.129032258064516) internal successors, (66), 31 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:04:55,913 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 71 transitions. [2021-11-07 08:04:55,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-07 08:04:55,914 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:04:55,914 INFO L513 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:04:55,949 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-11-07 08:04:56,140 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-11-07 08:04:56,140 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-07 08:04:56,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:04:56,141 INFO L85 PathProgramCache]: Analyzing trace with hash 300629083, now seen corresponding path program 14 times [2021-11-07 08:04:56,141 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:04:56,141 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603894350] [2021-11-07 08:04:56,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:04:56,141 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:04:56,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:04:56,596 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:04:56,596 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:04:56,597 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603894350] [2021-11-07 08:04:56,597 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603894350] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:04:56,597 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1386771034] [2021-11-07 08:04:56,597 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 08:04:56,597 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:04:56,597 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:04:56,598 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:04:56,599 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-07 08:04:56,808 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 08:04:56,809 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 08:04:56,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 30 conjunts are in the unsatisfiable core [2021-11-07 08:04:56,813 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:04:57,052 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:04:57,052 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1386771034] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:04:57,053 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 08:04:57,053 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 33 [2021-11-07 08:04:57,053 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015905149] [2021-11-07 08:04:57,054 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2021-11-07 08:04:57,054 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:04:57,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-11-07 08:04:57,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=288, Invalid=768, Unknown=0, NotChecked=0, Total=1056 [2021-11-07 08:04:57,057 INFO L87 Difference]: Start difference. First operand 68 states and 71 transitions. Second operand has 33 states, 33 states have (on average 2.121212121212121) internal successors, (70), 33 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) [2021-11-07 08:04:57,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:04:57,343 INFO L93 Difference]: Finished difference Result 84 states and 90 transitions. [2021-11-07 08:04:57,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-07 08:04:57,343 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.121212121212121) internal successors, (70), 33 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 65 [2021-11-07 08:04:57,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:04:57,344 INFO L225 Difference]: With dead ends: 84 [2021-11-07 08:04:57,344 INFO L226 Difference]: Without dead ends: 75 [2021-11-07 08:04:57,345 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 376 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=633, Invalid=1529, Unknown=0, NotChecked=0, Total=2162 [2021-11-07 08:04:57,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2021-11-07 08:04:57,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 72. [2021-11-07 08:04:57,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 70 states have (on average 1.0714285714285714) internal successors, (75), 71 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:04:57,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 75 transitions. [2021-11-07 08:04:57,350 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 75 transitions. Word has length 65 [2021-11-07 08:04:57,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:04:57,350 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 75 transitions. [2021-11-07 08:04:57,350 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.121212121212121) internal successors, (70), 33 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) [2021-11-07 08:04:57,351 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 75 transitions. [2021-11-07 08:04:57,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-07 08:04:57,351 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:04:57,352 INFO L513 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:04:57,394 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-11-07 08:04:57,576 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-11-07 08:04:57,576 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-07 08:04:57,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:04:57,577 INFO L85 PathProgramCache]: Analyzing trace with hash -754447657, now seen corresponding path program 15 times [2021-11-07 08:04:57,577 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:04:57,577 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314665165] [2021-11-07 08:04:57,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:04:57,577 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:04:57,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:04:57,976 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:04:57,976 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:04:57,976 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314665165] [2021-11-07 08:04:57,977 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314665165] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:04:57,977 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1744031967] [2021-11-07 08:04:57,977 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 08:04:57,977 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:04:57,977 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:04:57,988 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:04:58,001 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-11-07 08:04:58,350 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2021-11-07 08:04:58,350 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 08:04:58,352 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 32 conjunts are in the unsatisfiable core [2021-11-07 08:04:58,354 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:04:58,631 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:04:58,632 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1744031967] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:04:58,632 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 08:04:58,632 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 35 [2021-11-07 08:04:58,632 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078610755] [2021-11-07 08:04:58,633 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2021-11-07 08:04:58,633 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:04:58,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-11-07 08:04:58,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=323, Invalid=867, Unknown=0, NotChecked=0, Total=1190 [2021-11-07 08:04:58,635 INFO L87 Difference]: Start difference. First operand 72 states and 75 transitions. Second operand has 35 states, 35 states have (on average 2.1142857142857143) internal successors, (74), 35 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:04:58,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:04:58,960 INFO L93 Difference]: Finished difference Result 88 states and 94 transitions. [2021-11-07 08:04:58,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-11-07 08:04:58,961 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.1142857142857143) internal successors, (74), 35 states have internal predecessors, (74), 0 states have call successors, (0), 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 69 [2021-11-07 08:04:58,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:04:58,962 INFO L225 Difference]: With dead ends: 88 [2021-11-07 08:04:58,962 INFO L226 Difference]: Without dead ends: 79 [2021-11-07 08:04:58,963 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 426 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=715, Invalid=1735, Unknown=0, NotChecked=0, Total=2450 [2021-11-07 08:04:58,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2021-11-07 08:04:58,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 76. [2021-11-07 08:04:58,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 74 states have (on average 1.0675675675675675) internal successors, (79), 75 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:04:58,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 79 transitions. [2021-11-07 08:04:58,967 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 79 transitions. Word has length 69 [2021-11-07 08:04:58,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:04:58,967 INFO L470 AbstractCegarLoop]: Abstraction has 76 states and 79 transitions. [2021-11-07 08:04:58,967 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.1142857142857143) internal successors, (74), 35 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:04:58,968 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 79 transitions. [2021-11-07 08:04:58,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-07 08:04:58,968 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:04:58,969 INFO L513 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:04:59,010 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-11-07 08:04:59,192 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-11-07 08:04:59,192 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-07 08:04:59,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:04:59,192 INFO L85 PathProgramCache]: Analyzing trace with hash 65092435, now seen corresponding path program 16 times [2021-11-07 08:04:59,193 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:04:59,193 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442618290] [2021-11-07 08:04:59,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:04:59,193 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:04:59,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:04:59,714 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 0 proven. 496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:04:59,714 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:04:59,714 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442618290] [2021-11-07 08:04:59,714 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442618290] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:04:59,714 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [218454827] [2021-11-07 08:04:59,715 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-07 08:04:59,715 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:04:59,715 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:04:59,720 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:04:59,736 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-11-07 08:05:00,041 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-07 08:05:00,041 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 08:05:00,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 34 conjunts are in the unsatisfiable core [2021-11-07 08:05:00,045 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:05:00,343 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 0 proven. 496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:05:00,343 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [218454827] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:05:00,343 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 08:05:00,344 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 37 [2021-11-07 08:05:00,344 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534835132] [2021-11-07 08:05:00,344 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2021-11-07 08:05:00,344 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:05:00,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-11-07 08:05:00,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=360, Invalid=972, Unknown=0, NotChecked=0, Total=1332 [2021-11-07 08:05:00,346 INFO L87 Difference]: Start difference. First operand 76 states and 79 transitions. Second operand has 37 states, 37 states have (on average 2.108108108108108) internal successors, (78), 37 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:05:00,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:05:00,688 INFO L93 Difference]: Finished difference Result 92 states and 98 transitions. [2021-11-07 08:05:00,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-11-07 08:05:00,689 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 2.108108108108108) internal successors, (78), 37 states have internal predecessors, (78), 0 states have call successors, (0), 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 73 [2021-11-07 08:05:00,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:05:00,689 INFO L225 Difference]: With dead ends: 92 [2021-11-07 08:05:00,690 INFO L226 Difference]: Without dead ends: 83 [2021-11-07 08:05:00,691 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 479 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=802, Invalid=1954, Unknown=0, NotChecked=0, Total=2756 [2021-11-07 08:05:00,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2021-11-07 08:05:00,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 80. [2021-11-07 08:05:00,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 78 states have (on average 1.064102564102564) internal successors, (83), 79 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:05:00,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 83 transitions. [2021-11-07 08:05:00,699 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 83 transitions. Word has length 73 [2021-11-07 08:05:00,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:05:00,699 INFO L470 AbstractCegarLoop]: Abstraction has 80 states and 83 transitions. [2021-11-07 08:05:00,700 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 2.108108108108108) internal successors, (78), 37 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:05:00,700 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 83 transitions. [2021-11-07 08:05:00,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-07 08:05:00,701 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:05:00,701 INFO L513 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:05:00,737 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-11-07 08:05:00,914 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:05:00,914 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-07 08:05:00,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:05:00,915 INFO L85 PathProgramCache]: Analyzing trace with hash -881472049, now seen corresponding path program 17 times [2021-11-07 08:05:00,915 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:05:00,915 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72445191] [2021-11-07 08:05:00,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:05:00,915 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:05:00,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:05:01,503 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:05:01,503 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:05:01,503 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72445191] [2021-11-07 08:05:01,504 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72445191] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:05:01,504 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1779932998] [2021-11-07 08:05:01,504 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-07 08:05:01,504 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:05:01,504 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:05:01,508 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:05:01,530 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-11-07 08:05:01,915 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2021-11-07 08:05:01,915 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 08:05:01,917 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 36 conjunts are in the unsatisfiable core [2021-11-07 08:05:01,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:05:02,218 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:05:02,219 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1779932998] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:05:02,219 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 08:05:02,219 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 39 [2021-11-07 08:05:02,219 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094931082] [2021-11-07 08:05:02,220 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2021-11-07 08:05:02,220 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:05:02,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-11-07 08:05:02,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=399, Invalid=1083, Unknown=0, NotChecked=0, Total=1482 [2021-11-07 08:05:02,222 INFO L87 Difference]: Start difference. First operand 80 states and 83 transitions. Second operand has 39 states, 39 states have (on average 2.1025641025641026) internal successors, (82), 39 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:05:02,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:05:02,576 INFO L93 Difference]: Finished difference Result 96 states and 102 transitions. [2021-11-07 08:05:02,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-11-07 08:05:02,577 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 2.1025641025641026) internal successors, (82), 39 states have internal predecessors, (82), 0 states have call successors, (0), 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 77 [2021-11-07 08:05:02,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:05:02,577 INFO L225 Difference]: With dead ends: 96 [2021-11-07 08:05:02,577 INFO L226 Difference]: Without dead ends: 87 [2021-11-07 08:05:02,579 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 535 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=894, Invalid=2186, Unknown=0, NotChecked=0, Total=3080 [2021-11-07 08:05:02,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2021-11-07 08:05:02,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 84. [2021-11-07 08:05:02,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 82 states have (on average 1.0609756097560976) internal successors, (87), 83 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:05:02,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 87 transitions. [2021-11-07 08:05:02,582 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 87 transitions. Word has length 77 [2021-11-07 08:05:02,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:05:02,582 INFO L470 AbstractCegarLoop]: Abstraction has 84 states and 87 transitions. [2021-11-07 08:05:02,583 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 2.1025641025641026) internal successors, (82), 39 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:05:02,583 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 87 transitions. [2021-11-07 08:05:02,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-07 08:05:02,584 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:05:02,584 INFO L513 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:05:02,620 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-11-07 08:05:02,800 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:05:02,800 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-07 08:05:02,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:05:02,800 INFO L85 PathProgramCache]: Analyzing trace with hash -1186676149, now seen corresponding path program 18 times [2021-11-07 08:05:02,801 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:05:02,801 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376872852] [2021-11-07 08:05:02,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:05:02,801 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:05:02,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:05:03,384 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 0 proven. 630 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:05:03,384 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:05:03,384 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376872852] [2021-11-07 08:05:03,385 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376872852] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:05:03,385 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1072085263] [2021-11-07 08:05:03,385 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-07 08:05:03,385 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:05:03,385 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:05:03,388 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:05:03,416 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-11-07 08:05:04,540 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2021-11-07 08:05:04,540 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 08:05:04,545 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 38 conjunts are in the unsatisfiable core [2021-11-07 08:05:04,546 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:05:04,846 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 0 proven. 630 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:05:04,846 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1072085263] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:05:04,847 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 08:05:04,847 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 41 [2021-11-07 08:05:04,847 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686470853] [2021-11-07 08:05:04,848 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2021-11-07 08:05:04,848 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:05:04,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2021-11-07 08:05:04,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=440, Invalid=1200, Unknown=0, NotChecked=0, Total=1640 [2021-11-07 08:05:04,850 INFO L87 Difference]: Start difference. First operand 84 states and 87 transitions. Second operand has 41 states, 41 states have (on average 2.097560975609756) internal successors, (86), 41 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:05:05,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:05:05,254 INFO L93 Difference]: Finished difference Result 100 states and 106 transitions. [2021-11-07 08:05:05,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-11-07 08:05:05,255 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 2.097560975609756) internal successors, (86), 41 states have internal predecessors, (86), 0 states have call successors, (0), 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 81 [2021-11-07 08:05:05,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:05:05,256 INFO L225 Difference]: With dead ends: 100 [2021-11-07 08:05:05,256 INFO L226 Difference]: Without dead ends: 91 [2021-11-07 08:05:05,258 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 594 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=991, Invalid=2431, Unknown=0, NotChecked=0, Total=3422 [2021-11-07 08:05:05,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2021-11-07 08:05:05,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 88. [2021-11-07 08:05:05,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 86 states have (on average 1.058139534883721) internal successors, (91), 87 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:05:05,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 91 transitions. [2021-11-07 08:05:05,262 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 91 transitions. Word has length 81 [2021-11-07 08:05:05,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:05:05,263 INFO L470 AbstractCegarLoop]: Abstraction has 88 states and 91 transitions. [2021-11-07 08:05:05,263 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 2.097560975609756) internal successors, (86), 41 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:05:05,263 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 91 transitions. [2021-11-07 08:05:05,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-07 08:05:05,264 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:05:05,264 INFO L513 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:05:05,304 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-11-07 08:05:05,465 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2021-11-07 08:05:05,465 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-07 08:05:05,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:05:05,466 INFO L85 PathProgramCache]: Analyzing trace with hash -2058544953, now seen corresponding path program 19 times [2021-11-07 08:05:05,466 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:05:05,466 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114988670] [2021-11-07 08:05:05,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:05:05,466 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:05:05,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:05:06,099 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 0 proven. 703 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:05:06,099 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:05:06,099 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114988670] [2021-11-07 08:05:06,100 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114988670] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:05:06,100 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [611182136] [2021-11-07 08:05:06,100 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-07 08:05:06,100 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:05:06,100 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:05:06,104 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:05:06,135 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-11-07 08:05:06,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:05:06,467 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 40 conjunts are in the unsatisfiable core [2021-11-07 08:05:06,469 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:05:06,823 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 0 proven. 703 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:05:06,824 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [611182136] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:05:06,824 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 08:05:06,824 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 43 [2021-11-07 08:05:06,824 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944111051] [2021-11-07 08:05:06,825 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2021-11-07 08:05:06,825 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:05:06,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-11-07 08:05:06,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=483, Invalid=1323, Unknown=0, NotChecked=0, Total=1806 [2021-11-07 08:05:06,828 INFO L87 Difference]: Start difference. First operand 88 states and 91 transitions. Second operand has 43 states, 43 states have (on average 2.0930232558139537) internal successors, (90), 43 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:05:07,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:05:07,217 INFO L93 Difference]: Finished difference Result 104 states and 110 transitions. [2021-11-07 08:05:07,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-11-07 08:05:07,219 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 2.0930232558139537) internal successors, (90), 43 states have internal predecessors, (90), 0 states have call successors, (0), 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 85 [2021-11-07 08:05:07,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:05:07,220 INFO L225 Difference]: With dead ends: 104 [2021-11-07 08:05:07,220 INFO L226 Difference]: Without dead ends: 95 [2021-11-07 08:05:07,221 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 656 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1093, Invalid=2689, Unknown=0, NotChecked=0, Total=3782 [2021-11-07 08:05:07,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2021-11-07 08:05:07,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 92. [2021-11-07 08:05:07,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 90 states have (on average 1.0555555555555556) internal successors, (95), 91 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:05:07,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 95 transitions. [2021-11-07 08:05:07,225 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 95 transitions. Word has length 85 [2021-11-07 08:05:07,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:05:07,226 INFO L470 AbstractCegarLoop]: Abstraction has 92 states and 95 transitions. [2021-11-07 08:05:07,226 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 2.0930232558139537) internal successors, (90), 43 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:05:07,226 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 95 transitions. [2021-11-07 08:05:07,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-07 08:05:07,227 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:05:07,228 INFO L513 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:05:07,267 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-11-07 08:05:07,452 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:05:07,452 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-07 08:05:07,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:05:07,453 INFO L85 PathProgramCache]: Analyzing trace with hash -804400829, now seen corresponding path program 20 times [2021-11-07 08:05:07,453 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:05:07,453 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544263301] [2021-11-07 08:05:07,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:05:07,453 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:05:07,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:05:08,121 INFO L134 CoverageAnalysis]: Checked inductivity of 780 backedges. 0 proven. 780 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:05:08,122 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:05:08,122 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544263301] [2021-11-07 08:05:08,122 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544263301] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:05:08,122 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [740638125] [2021-11-07 08:05:08,122 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 08:05:08,122 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:05:08,122 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:05:08,128 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:05:08,128 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-11-07 08:05:08,494 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 08:05:08,494 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 08:05:08,496 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 42 conjunts are in the unsatisfiable core [2021-11-07 08:05:08,499 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:05:08,853 INFO L134 CoverageAnalysis]: Checked inductivity of 780 backedges. 0 proven. 780 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:05:08,853 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [740638125] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:05:08,853 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 08:05:08,853 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 45 [2021-11-07 08:05:08,853 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719532637] [2021-11-07 08:05:08,854 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2021-11-07 08:05:08,854 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:05:08,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2021-11-07 08:05:08,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=528, Invalid=1452, Unknown=0, NotChecked=0, Total=1980 [2021-11-07 08:05:08,855 INFO L87 Difference]: Start difference. First operand 92 states and 95 transitions. Second operand has 45 states, 45 states have (on average 2.088888888888889) internal successors, (94), 45 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:05:09,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:05:09,282 INFO L93 Difference]: Finished difference Result 108 states and 114 transitions. [2021-11-07 08:05:09,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-11-07 08:05:09,282 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 2.088888888888889) internal successors, (94), 45 states have internal predecessors, (94), 0 states have call successors, (0), 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 [2021-11-07 08:05:09,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:05:09,283 INFO L225 Difference]: With dead ends: 108 [2021-11-07 08:05:09,284 INFO L226 Difference]: Without dead ends: 99 [2021-11-07 08:05:09,286 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 721 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1200, Invalid=2960, Unknown=0, NotChecked=0, Total=4160 [2021-11-07 08:05:09,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2021-11-07 08:05:09,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 96. [2021-11-07 08:05:09,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 94 states have (on average 1.053191489361702) internal successors, (99), 95 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:05:09,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 99 transitions. [2021-11-07 08:05:09,290 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 99 transitions. Word has length 89 [2021-11-07 08:05:09,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:05:09,290 INFO L470 AbstractCegarLoop]: Abstraction has 96 states and 99 transitions. [2021-11-07 08:05:09,290 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 2.088888888888889) internal successors, (94), 45 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:05:09,291 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 99 transitions. [2021-11-07 08:05:09,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-07 08:05:09,291 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:05:09,291 INFO L513 BasicCegarLoop]: trace histogram [21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:05:09,313 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2021-11-07 08:05:09,492 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-11-07 08:05:09,492 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-07 08:05:09,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:05:09,492 INFO L85 PathProgramCache]: Analyzing trace with hash -494539841, now seen corresponding path program 21 times [2021-11-07 08:05:09,493 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:05:09,493 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448678580] [2021-11-07 08:05:09,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:05:09,493 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:05:09,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:05:10,292 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 0 proven. 861 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:05:10,292 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:05:10,292 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448678580] [2021-11-07 08:05:10,292 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448678580] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:05:10,292 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1602810716] [2021-11-07 08:05:10,292 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 08:05:10,293 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:05:10,293 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:05:10,294 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:05:10,312 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-11-07 08:05:11,085 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2021-11-07 08:05:11,086 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 08:05:11,090 INFO L263 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 44 conjunts are in the unsatisfiable core [2021-11-07 08:05:11,093 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:05:11,451 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 0 proven. 861 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:05:11,451 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1602810716] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:05:11,452 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 08:05:11,452 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45] total 47 [2021-11-07 08:05:11,452 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226154287] [2021-11-07 08:05:11,452 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2021-11-07 08:05:11,452 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:05:11,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2021-11-07 08:05:11,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=575, Invalid=1587, Unknown=0, NotChecked=0, Total=2162 [2021-11-07 08:05:11,454 INFO L87 Difference]: Start difference. First operand 96 states and 99 transitions. Second operand has 47 states, 47 states have (on average 2.0851063829787235) internal successors, (98), 47 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) [2021-11-07 08:05:11,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:05:11,941 INFO L93 Difference]: Finished difference Result 112 states and 118 transitions. [2021-11-07 08:05:11,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-11-07 08:05:11,942 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 2.0851063829787235) internal successors, (98), 47 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 93 [2021-11-07 08:05:11,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:05:11,943 INFO L225 Difference]: With dead ends: 112 [2021-11-07 08:05:11,943 INFO L226 Difference]: Without dead ends: 103 [2021-11-07 08:05:11,945 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 789 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1312, Invalid=3244, Unknown=0, NotChecked=0, Total=4556 [2021-11-07 08:05:11,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2021-11-07 08:05:11,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 100. [2021-11-07 08:05:11,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 98 states have (on average 1.0510204081632653) internal successors, (103), 99 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:05:11,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 103 transitions. [2021-11-07 08:05:11,948 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 103 transitions. Word has length 93 [2021-11-07 08:05:11,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:05:11,949 INFO L470 AbstractCegarLoop]: Abstraction has 100 states and 103 transitions. [2021-11-07 08:05:11,949 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 2.0851063829787235) internal successors, (98), 47 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) [2021-11-07 08:05:11,949 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 103 transitions. [2021-11-07 08:05:11,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-07 08:05:11,950 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:05:11,950 INFO L513 BasicCegarLoop]: trace histogram [22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:05:11,975 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2021-11-07 08:05:12,160 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-11-07 08:05:12,160 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-07 08:05:12,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:05:12,161 INFO L85 PathProgramCache]: Analyzing trace with hash 1848928315, now seen corresponding path program 22 times [2021-11-07 08:05:12,161 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:05:12,161 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602905966] [2021-11-07 08:05:12,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:05:12,161 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:05:12,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:05:12,868 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 0 proven. 946 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:05:12,869 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:05:12,869 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602905966] [2021-11-07 08:05:12,869 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602905966] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:05:12,869 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1595310137] [2021-11-07 08:05:12,869 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-07 08:05:12,869 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:05:12,869 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:05:12,872 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:05:12,888 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-11-07 08:05:13,280 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-07 08:05:13,281 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 08:05:13,282 INFO L263 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 46 conjunts are in the unsatisfiable core [2021-11-07 08:05:13,284 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:05:13,635 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 0 proven. 946 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:05:13,635 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1595310137] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:05:13,635 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 08:05:13,636 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47] total 49 [2021-11-07 08:05:13,636 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402249251] [2021-11-07 08:05:13,636 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2021-11-07 08:05:13,636 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:05:13,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2021-11-07 08:05:13,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=624, Invalid=1728, Unknown=0, NotChecked=0, Total=2352 [2021-11-07 08:05:13,640 INFO L87 Difference]: Start difference. First operand 100 states and 103 transitions. Second operand has 49 states, 49 states have (on average 2.0816326530612246) internal successors, (102), 49 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:05:14,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:05:14,072 INFO L93 Difference]: Finished difference Result 116 states and 122 transitions. [2021-11-07 08:05:14,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-11-07 08:05:14,074 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 2.0816326530612246) internal successors, (102), 49 states have internal predecessors, (102), 0 states have call successors, (0), 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 97 [2021-11-07 08:05:14,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:05:14,075 INFO L225 Difference]: With dead ends: 116 [2021-11-07 08:05:14,075 INFO L226 Difference]: Without dead ends: 107 [2021-11-07 08:05:14,077 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 860 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1429, Invalid=3541, Unknown=0, NotChecked=0, Total=4970 [2021-11-07 08:05:14,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2021-11-07 08:05:14,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 104. [2021-11-07 08:05:14,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 102 states have (on average 1.0490196078431373) internal successors, (107), 103 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:05:14,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 107 transitions. [2021-11-07 08:05:14,082 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 107 transitions. Word has length 97 [2021-11-07 08:05:14,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:05:14,082 INFO L470 AbstractCegarLoop]: Abstraction has 104 states and 107 transitions. [2021-11-07 08:05:14,082 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 2.0816326530612246) internal successors, (102), 49 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:05:14,083 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 107 transitions. [2021-11-07 08:05:14,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-11-07 08:05:14,083 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:05:14,084 INFO L513 BasicCegarLoop]: trace histogram [23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:05:14,108 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2021-11-07 08:05:14,292 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:05:14,292 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-07 08:05:14,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:05:14,292 INFO L85 PathProgramCache]: Analyzing trace with hash 1293436599, now seen corresponding path program 23 times [2021-11-07 08:05:14,293 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:05:14,293 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93637914] [2021-11-07 08:05:14,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:05:14,293 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:05:14,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:05:15,219 INFO L134 CoverageAnalysis]: Checked inductivity of 1035 backedges. 0 proven. 1035 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:05:15,219 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:05:15,219 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93637914] [2021-11-07 08:05:15,219 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93637914] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:05:15,219 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2033388305] [2021-11-07 08:05:15,220 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-07 08:05:15,220 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:05:15,220 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:05:15,221 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:05:15,238 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-11-07 08:05:16,049 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2021-11-07 08:05:16,049 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 08:05:16,053 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 48 conjunts are in the unsatisfiable core [2021-11-07 08:05:16,054 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:05:16,408 INFO L134 CoverageAnalysis]: Checked inductivity of 1035 backedges. 0 proven. 1035 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:05:16,408 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2033388305] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:05:16,408 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 08:05:16,408 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 51 [2021-11-07 08:05:16,409 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618584165] [2021-11-07 08:05:16,409 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2021-11-07 08:05:16,409 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:05:16,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2021-11-07 08:05:16,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=675, Invalid=1875, Unknown=0, NotChecked=0, Total=2550 [2021-11-07 08:05:16,411 INFO L87 Difference]: Start difference. First operand 104 states and 107 transitions. Second operand has 51 states, 51 states have (on average 2.0784313725490198) internal successors, (106), 51 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:05:16,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:05:16,935 INFO L93 Difference]: Finished difference Result 120 states and 126 transitions. [2021-11-07 08:05:16,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-11-07 08:05:16,936 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 2.0784313725490198) internal successors, (106), 51 states have internal predecessors, (106), 0 states have call successors, (0), 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 101 [2021-11-07 08:05:16,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:05:16,937 INFO L225 Difference]: With dead ends: 120 [2021-11-07 08:05:16,938 INFO L226 Difference]: Without dead ends: 111 [2021-11-07 08:05:16,941 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 934 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1551, Invalid=3851, Unknown=0, NotChecked=0, Total=5402 [2021-11-07 08:05:16,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2021-11-07 08:05:16,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 108. [2021-11-07 08:05:16,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 106 states have (on average 1.0471698113207548) internal successors, (111), 107 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:05:16,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 111 transitions. [2021-11-07 08:05:16,955 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 111 transitions. Word has length 101 [2021-11-07 08:05:16,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:05:16,955 INFO L470 AbstractCegarLoop]: Abstraction has 108 states and 111 transitions. [2021-11-07 08:05:16,956 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 2.0784313725490198) internal successors, (106), 51 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:05:16,956 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 111 transitions. [2021-11-07 08:05:16,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-11-07 08:05:16,957 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:05:16,957 INFO L513 BasicCegarLoop]: trace histogram [24, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:05:17,000 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2021-11-07 08:05:17,172 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:05:17,172 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-07 08:05:17,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:05:17,172 INFO L85 PathProgramCache]: Analyzing trace with hash 1102087987, now seen corresponding path program 24 times [2021-11-07 08:05:17,173 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:05:17,173 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638875749] [2021-11-07 08:05:17,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:05:17,173 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:05:17,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:05:17,977 INFO L134 CoverageAnalysis]: Checked inductivity of 1128 backedges. 0 proven. 1128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:05:17,977 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:05:17,977 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638875749] [2021-11-07 08:05:17,977 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638875749] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:05:17,977 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1172603317] [2021-11-07 08:05:17,977 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-07 08:05:17,977 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:05:17,978 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:05:17,978 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:05:17,979 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2021-11-07 08:05:19,294 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2021-11-07 08:05:19,295 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 08:05:19,300 INFO L263 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 50 conjunts are in the unsatisfiable core [2021-11-07 08:05:19,302 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:05:19,622 INFO L134 CoverageAnalysis]: Checked inductivity of 1128 backedges. 0 proven. 1128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:05:19,623 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1172603317] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:05:19,623 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 08:05:19,623 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51] total 53 [2021-11-07 08:05:19,623 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628281468] [2021-11-07 08:05:19,623 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2021-11-07 08:05:19,623 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:05:19,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2021-11-07 08:05:19,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=728, Invalid=2028, Unknown=0, NotChecked=0, Total=2756 [2021-11-07 08:05:19,624 INFO L87 Difference]: Start difference. First operand 108 states and 111 transitions. Second operand has 53 states, 53 states have (on average 2.0754716981132075) internal successors, (110), 53 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:05:20,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:05:20,168 INFO L93 Difference]: Finished difference Result 124 states and 130 transitions. [2021-11-07 08:05:20,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-11-07 08:05:20,168 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 2.0754716981132075) internal successors, (110), 53 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2021-11-07 08:05:20,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:05:20,169 INFO L225 Difference]: With dead ends: 124 [2021-11-07 08:05:20,169 INFO L226 Difference]: Without dead ends: 115 [2021-11-07 08:05:20,170 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1011 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1678, Invalid=4174, Unknown=0, NotChecked=0, Total=5852 [2021-11-07 08:05:20,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2021-11-07 08:05:20,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 112. [2021-11-07 08:05:20,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 110 states have (on average 1.0454545454545454) internal successors, (115), 111 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:05:20,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 115 transitions. [2021-11-07 08:05:20,173 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 115 transitions. Word has length 105 [2021-11-07 08:05:20,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:05:20,174 INFO L470 AbstractCegarLoop]: Abstraction has 112 states and 115 transitions. [2021-11-07 08:05:20,174 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 2.0754716981132075) internal successors, (110), 53 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:05:20,174 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 115 transitions. [2021-11-07 08:05:20,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-11-07 08:05:20,175 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:05:20,175 INFO L513 BasicCegarLoop]: trace histogram [25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:05:20,207 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2021-11-07 08:05:20,396 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-11-07 08:05:20,396 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-07 08:05:20,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:05:20,397 INFO L85 PathProgramCache]: Analyzing trace with hash -1224988241, now seen corresponding path program 25 times [2021-11-07 08:05:20,397 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:05:20,397 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107920459] [2021-11-07 08:05:20,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:05:20,397 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:05:20,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:05:21,326 INFO L134 CoverageAnalysis]: Checked inductivity of 1225 backedges. 0 proven. 1225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:05:21,327 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:05:21,327 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107920459] [2021-11-07 08:05:21,327 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107920459] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:05:21,327 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [278051967] [2021-11-07 08:05:21,327 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-07 08:05:21,327 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:05:21,328 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:05:21,328 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:05:21,329 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2021-11-07 08:05:21,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:05:21,879 INFO L263 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 52 conjunts are in the unsatisfiable core [2021-11-07 08:05:21,880 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:05:22,277 INFO L134 CoverageAnalysis]: Checked inductivity of 1225 backedges. 0 proven. 1225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:05:22,277 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [278051967] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:05:22,277 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 08:05:22,277 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53] total 55 [2021-11-07 08:05:22,277 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794023666] [2021-11-07 08:05:22,278 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2021-11-07 08:05:22,278 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:05:22,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2021-11-07 08:05:22,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=783, Invalid=2187, Unknown=0, NotChecked=0, Total=2970 [2021-11-07 08:05:22,279 INFO L87 Difference]: Start difference. First operand 112 states and 115 transitions. Second operand has 55 states, 55 states have (on average 2.0727272727272728) internal successors, (114), 55 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:05:22,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:05:22,882 INFO L93 Difference]: Finished difference Result 128 states and 134 transitions. [2021-11-07 08:05:22,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-11-07 08:05:22,883 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 2.0727272727272728) internal successors, (114), 55 states have internal predecessors, (114), 0 states have call successors, (0), 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 109 [2021-11-07 08:05:22,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:05:22,884 INFO L225 Difference]: With dead ends: 128 [2021-11-07 08:05:22,884 INFO L226 Difference]: Without dead ends: 119 [2021-11-07 08:05:22,885 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1091 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1810, Invalid=4510, Unknown=0, NotChecked=0, Total=6320 [2021-11-07 08:05:22,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2021-11-07 08:05:22,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 116. [2021-11-07 08:05:22,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 114 states have (on average 1.043859649122807) internal successors, (119), 115 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:05:22,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 119 transitions. [2021-11-07 08:05:22,890 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 119 transitions. Word has length 109 [2021-11-07 08:05:22,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:05:22,891 INFO L470 AbstractCegarLoop]: Abstraction has 116 states and 119 transitions. [2021-11-07 08:05:22,891 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 2.0727272727272728) internal successors, (114), 55 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:05:22,891 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 119 transitions. [2021-11-07 08:05:22,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-07 08:05:22,892 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:05:22,893 INFO L513 BasicCegarLoop]: trace histogram [26, 26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:05:22,921 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2021-11-07 08:05:23,108 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-11-07 08:05:23,108 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-07 08:05:23,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:05:23,109 INFO L85 PathProgramCache]: Analyzing trace with hash -2139476437, now seen corresponding path program 26 times [2021-11-07 08:05:23,109 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:05:23,109 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345718918] [2021-11-07 08:05:23,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:05:23,109 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:05:23,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:05:24,237 INFO L134 CoverageAnalysis]: Checked inductivity of 1326 backedges. 0 proven. 1326 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:05:24,238 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:05:24,238 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345718918] [2021-11-07 08:05:24,238 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345718918] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:05:24,238 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [844727656] [2021-11-07 08:05:24,238 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 08:05:24,238 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:05:24,238 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:05:24,239 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:05:24,241 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2021-11-07 08:05:24,804 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 08:05:24,804 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 08:05:24,806 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 54 conjunts are in the unsatisfiable core [2021-11-07 08:05:24,808 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:05:25,216 INFO L134 CoverageAnalysis]: Checked inductivity of 1326 backedges. 0 proven. 1326 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:05:25,217 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [844727656] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:05:25,217 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 08:05:25,217 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 55] total 57 [2021-11-07 08:05:25,218 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670654872] [2021-11-07 08:05:25,218 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2021-11-07 08:05:25,218 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:05:25,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2021-11-07 08:05:25,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=840, Invalid=2352, Unknown=0, NotChecked=0, Total=3192 [2021-11-07 08:05:25,219 INFO L87 Difference]: Start difference. First operand 116 states and 119 transitions. Second operand has 57 states, 57 states have (on average 2.0701754385964914) internal successors, (118), 57 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:05:25,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:05:25,852 INFO L93 Difference]: Finished difference Result 132 states and 138 transitions. [2021-11-07 08:05:25,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-11-07 08:05:25,852 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 2.0701754385964914) internal successors, (118), 57 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 113 [2021-11-07 08:05:25,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:05:25,853 INFO L225 Difference]: With dead ends: 132 [2021-11-07 08:05:25,853 INFO L226 Difference]: Without dead ends: 123 [2021-11-07 08:05:25,855 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1174 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1947, Invalid=4859, Unknown=0, NotChecked=0, Total=6806 [2021-11-07 08:05:25,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2021-11-07 08:05:25,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 120. [2021-11-07 08:05:25,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 118 states have (on average 1.0423728813559323) internal successors, (123), 119 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:05:25,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 123 transitions. [2021-11-07 08:05:25,860 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 123 transitions. Word has length 113 [2021-11-07 08:05:25,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:05:25,860 INFO L470 AbstractCegarLoop]: Abstraction has 120 states and 123 transitions. [2021-11-07 08:05:25,861 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 2.0701754385964914) internal successors, (118), 57 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:05:25,861 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 123 transitions. [2021-11-07 08:05:25,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-11-07 08:05:25,862 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:05:25,862 INFO L513 BasicCegarLoop]: trace histogram [27, 27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:05:25,895 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2021-11-07 08:05:26,076 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-11-07 08:05:26,076 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-07 08:05:26,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:05:26,077 INFO L85 PathProgramCache]: Analyzing trace with hash -1708551001, now seen corresponding path program 27 times [2021-11-07 08:05:26,077 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:05:26,077 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031157229] [2021-11-07 08:05:26,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:05:26,077 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:05:26,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:05:27,130 INFO L134 CoverageAnalysis]: Checked inductivity of 1431 backedges. 0 proven. 1431 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:05:27,131 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:05:27,131 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031157229] [2021-11-07 08:05:27,131 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031157229] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:05:27,131 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [746928197] [2021-11-07 08:05:27,131 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 08:05:27,131 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:05:27,131 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:05:27,132 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:05:27,134 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2021-11-07 08:05:29,121 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 28 check-sat command(s) [2021-11-07 08:05:29,122 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 08:05:29,128 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 56 conjunts are in the unsatisfiable core [2021-11-07 08:05:29,130 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:05:29,476 INFO L134 CoverageAnalysis]: Checked inductivity of 1431 backedges. 0 proven. 1431 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:05:29,476 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [746928197] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:05:29,477 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 08:05:29,477 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 57] total 59 [2021-11-07 08:05:29,477 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360823698] [2021-11-07 08:05:29,478 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2021-11-07 08:05:29,478 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:05:29,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2021-11-07 08:05:29,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=899, Invalid=2523, Unknown=0, NotChecked=0, Total=3422 [2021-11-07 08:05:29,479 INFO L87 Difference]: Start difference. First operand 120 states and 123 transitions. Second operand has 59 states, 59 states have (on average 2.0677966101694913) internal successors, (122), 59 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:05:30,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:05:30,154 INFO L93 Difference]: Finished difference Result 136 states and 142 transitions. [2021-11-07 08:05:30,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-11-07 08:05:30,154 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 2.0677966101694913) internal successors, (122), 59 states have internal predecessors, (122), 0 states have call successors, (0), 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 117 [2021-11-07 08:05:30,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:05:30,155 INFO L225 Difference]: With dead ends: 136 [2021-11-07 08:05:30,155 INFO L226 Difference]: Without dead ends: 127 [2021-11-07 08:05:30,156 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1260 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=2089, Invalid=5221, Unknown=0, NotChecked=0, Total=7310 [2021-11-07 08:05:30,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2021-11-07 08:05:30,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 124. [2021-11-07 08:05:30,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 122 states have (on average 1.040983606557377) internal successors, (127), 123 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:05:30,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 127 transitions. [2021-11-07 08:05:30,161 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 127 transitions. Word has length 117 [2021-11-07 08:05:30,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:05:30,162 INFO L470 AbstractCegarLoop]: Abstraction has 124 states and 127 transitions. [2021-11-07 08:05:30,162 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 2.0677966101694913) internal successors, (122), 59 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:05:30,162 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 127 transitions. [2021-11-07 08:05:30,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-07 08:05:30,163 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:05:30,163 INFO L513 BasicCegarLoop]: trace histogram [28, 28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:05:30,189 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2021-11-07 08:05:30,368 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:05:30,368 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-07 08:05:30,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:05:30,368 INFO L85 PathProgramCache]: Analyzing trace with hash -393650909, now seen corresponding path program 28 times [2021-11-07 08:05:30,369 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:05:30,369 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970268392] [2021-11-07 08:05:30,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:05:30,369 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:05:30,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:05:31,524 INFO L134 CoverageAnalysis]: Checked inductivity of 1540 backedges. 0 proven. 1540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:05:31,524 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:05:31,525 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970268392] [2021-11-07 08:05:31,525 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970268392] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:05:31,525 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [276325868] [2021-11-07 08:05:31,525 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-07 08:05:31,525 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:05:31,525 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:05:31,526 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:05:31,527 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2021-11-07 08:05:32,174 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-07 08:05:32,174 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 08:05:32,176 INFO L263 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 58 conjunts are in the unsatisfiable core [2021-11-07 08:05:32,178 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:05:32,589 INFO L134 CoverageAnalysis]: Checked inductivity of 1540 backedges. 0 proven. 1540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:05:32,590 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [276325868] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:05:32,590 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 08:05:32,590 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 59] total 61 [2021-11-07 08:05:32,590 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67309848] [2021-11-07 08:05:32,591 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2021-11-07 08:05:32,591 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:05:32,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2021-11-07 08:05:32,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=960, Invalid=2700, Unknown=0, NotChecked=0, Total=3660 [2021-11-07 08:05:32,593 INFO L87 Difference]: Start difference. First operand 124 states and 127 transitions. Second operand has 61 states, 61 states have (on average 2.0655737704918034) internal successors, (126), 61 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:05:33,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:05:33,346 INFO L93 Difference]: Finished difference Result 140 states and 146 transitions. [2021-11-07 08:05:33,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-11-07 08:05:33,346 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 2.0655737704918034) internal successors, (126), 61 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 121 [2021-11-07 08:05:33,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:05:33,348 INFO L225 Difference]: With dead ends: 140 [2021-11-07 08:05:33,348 INFO L226 Difference]: Without dead ends: 131 [2021-11-07 08:05:33,350 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1349 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=2236, Invalid=5596, Unknown=0, NotChecked=0, Total=7832 [2021-11-07 08:05:33,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2021-11-07 08:05:33,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 128. [2021-11-07 08:05:33,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 126 states have (on average 1.0396825396825398) internal successors, (131), 127 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:05:33,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 131 transitions. [2021-11-07 08:05:33,358 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 131 transitions. Word has length 121 [2021-11-07 08:05:33,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:05:33,359 INFO L470 AbstractCegarLoop]: Abstraction has 128 states and 131 transitions. [2021-11-07 08:05:33,359 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 2.0655737704918034) internal successors, (126), 61 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:05:33,359 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 131 transitions. [2021-11-07 08:05:33,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-11-07 08:05:33,360 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:05:33,360 INFO L513 BasicCegarLoop]: trace histogram [29, 29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:05:33,406 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2021-11-07 08:05:33,576 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:05:33,576 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-07 08:05:33,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:05:33,576 INFO L85 PathProgramCache]: Analyzing trace with hash -124221537, now seen corresponding path program 29 times [2021-11-07 08:05:33,577 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:05:33,577 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690979333] [2021-11-07 08:05:33,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:05:33,577 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:05:33,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:05:34,858 INFO L134 CoverageAnalysis]: Checked inductivity of 1653 backedges. 0 proven. 1653 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:05:34,859 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:05:34,859 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690979333] [2021-11-07 08:05:34,859 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690979333] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:05:34,859 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [199770981] [2021-11-07 08:05:34,859 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-07 08:05:34,859 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:05:34,859 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:05:34,860 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:05:34,862 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2021-11-07 08:05:36,417 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 30 check-sat command(s) [2021-11-07 08:05:36,417 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 08:05:36,423 INFO L263 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 60 conjunts are in the unsatisfiable core [2021-11-07 08:05:36,425 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:05:36,824 INFO L134 CoverageAnalysis]: Checked inductivity of 1653 backedges. 0 proven. 1653 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:05:36,824 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [199770981] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:05:36,825 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 08:05:36,826 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61] total 63 [2021-11-07 08:05:36,826 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283658471] [2021-11-07 08:05:36,826 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2021-11-07 08:05:36,826 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:05:36,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2021-11-07 08:05:36,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1023, Invalid=2883, Unknown=0, NotChecked=0, Total=3906 [2021-11-07 08:05:36,827 INFO L87 Difference]: Start difference. First operand 128 states and 131 transitions. Second operand has 63 states, 63 states have (on average 2.0634920634920637) internal successors, (130), 63 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) [2021-11-07 08:05:37,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:05:37,529 INFO L93 Difference]: Finished difference Result 144 states and 150 transitions. [2021-11-07 08:05:37,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-11-07 08:05:37,529 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 2.0634920634920637) internal successors, (130), 63 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 125 [2021-11-07 08:05:37,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:05:37,530 INFO L225 Difference]: With dead ends: 144 [2021-11-07 08:05:37,530 INFO L226 Difference]: Without dead ends: 135 [2021-11-07 08:05:37,532 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1441 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=2388, Invalid=5984, Unknown=0, NotChecked=0, Total=8372 [2021-11-07 08:05:37,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2021-11-07 08:05:37,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 132. [2021-11-07 08:05:37,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 130 states have (on average 1.0384615384615385) internal successors, (135), 131 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:05:37,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 135 transitions. [2021-11-07 08:05:37,537 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 135 transitions. Word has length 125 [2021-11-07 08:05:37,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:05:37,537 INFO L470 AbstractCegarLoop]: Abstraction has 132 states and 135 transitions. [2021-11-07 08:05:37,537 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 2.0634920634920637) internal successors, (130), 63 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) [2021-11-07 08:05:37,537 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 135 transitions. [2021-11-07 08:05:37,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-11-07 08:05:37,538 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:05:37,538 INFO L513 BasicCegarLoop]: trace histogram [30, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:05:37,567 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2021-11-07 08:05:37,744 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:05:37,745 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-07 08:05:37,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:05:37,745 INFO L85 PathProgramCache]: Analyzing trace with hash -1076489189, now seen corresponding path program 30 times [2021-11-07 08:05:37,745 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:05:37,745 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200958575] [2021-11-07 08:05:37,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:05:37,745 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:05:37,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:05:38,974 INFO L134 CoverageAnalysis]: Checked inductivity of 1770 backedges. 0 proven. 1770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:05:38,974 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:05:38,974 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200958575] [2021-11-07 08:05:38,974 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200958575] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:05:38,974 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [868826122] [2021-11-07 08:05:38,974 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-07 08:05:38,975 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:05:38,976 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:05:38,976 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:05:38,977 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2021-11-07 08:05:44,554 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2021-11-07 08:05:44,555 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 08:05:44,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 62 conjunts are in the unsatisfiable core [2021-11-07 08:05:44,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:05:44,996 INFO L134 CoverageAnalysis]: Checked inductivity of 1770 backedges. 0 proven. 1770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:05:44,997 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [868826122] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:05:44,997 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 08:05:44,997 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 63] total 65 [2021-11-07 08:05:44,997 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317956042] [2021-11-07 08:05:44,998 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2021-11-07 08:05:44,998 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:05:44,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2021-11-07 08:05:44,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1088, Invalid=3072, Unknown=0, NotChecked=0, Total=4160 [2021-11-07 08:05:44,999 INFO L87 Difference]: Start difference. First operand 132 states and 135 transitions. Second operand has 65 states, 65 states have (on average 2.0615384615384613) internal successors, (134), 65 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:05:45,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:05:45,788 INFO L93 Difference]: Finished difference Result 148 states and 154 transitions. [2021-11-07 08:05:45,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-11-07 08:05:45,792 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 2.0615384615384613) internal successors, (134), 65 states have internal predecessors, (134), 0 states have call successors, (0), 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 129 [2021-11-07 08:05:45,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:05:45,794 INFO L225 Difference]: With dead ends: 148 [2021-11-07 08:05:45,794 INFO L226 Difference]: Without dead ends: 139 [2021-11-07 08:05:45,796 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1536 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=2545, Invalid=6385, Unknown=0, NotChecked=0, Total=8930 [2021-11-07 08:05:45,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2021-11-07 08:05:45,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 136. [2021-11-07 08:05:45,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 134 states have (on average 1.037313432835821) internal successors, (139), 135 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:05:45,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 139 transitions. [2021-11-07 08:05:45,803 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 139 transitions. Word has length 129 [2021-11-07 08:05:45,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:05:45,804 INFO L470 AbstractCegarLoop]: Abstraction has 136 states and 139 transitions. [2021-11-07 08:05:45,804 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 2.0615384615384613) internal successors, (134), 65 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:05:45,804 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 139 transitions. [2021-11-07 08:05:45,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-11-07 08:05:45,806 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:05:45,806 INFO L513 BasicCegarLoop]: trace histogram [31, 31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:05:45,851 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2021-11-07 08:05:46,020 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2021-11-07 08:05:46,020 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-07 08:05:46,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:05:46,021 INFO L85 PathProgramCache]: Analyzing trace with hash 1547764375, now seen corresponding path program 31 times [2021-11-07 08:05:46,021 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:05:46,021 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279940195] [2021-11-07 08:05:46,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:05:46,021 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:05:46,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:05:47,509 INFO L134 CoverageAnalysis]: Checked inductivity of 1891 backedges. 0 proven. 1891 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:05:47,509 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:05:47,509 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279940195] [2021-11-07 08:05:47,509 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279940195] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:05:47,509 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [580155149] [2021-11-07 08:05:47,509 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-07 08:05:47,509 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:05:47,510 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:05:47,510 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:05:47,511 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2021-11-07 08:05:48,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:05:48,251 INFO L263 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 64 conjunts are in the unsatisfiable core [2021-11-07 08:05:48,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:05:48,683 INFO L134 CoverageAnalysis]: Checked inductivity of 1891 backedges. 0 proven. 1891 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:05:48,683 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [580155149] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:05:48,683 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 08:05:48,683 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65] total 67 [2021-11-07 08:05:48,683 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163865630] [2021-11-07 08:05:48,684 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2021-11-07 08:05:48,684 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:05:48,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2021-11-07 08:05:48,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1155, Invalid=3267, Unknown=0, NotChecked=0, Total=4422 [2021-11-07 08:05:48,685 INFO L87 Difference]: Start difference. First operand 136 states and 139 transitions. Second operand has 67 states, 67 states have (on average 2.0597014925373136) internal successors, (138), 67 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:05:49,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:05:49,419 INFO L93 Difference]: Finished difference Result 152 states and 158 transitions. [2021-11-07 08:05:49,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-11-07 08:05:49,420 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 67 states have (on average 2.0597014925373136) internal successors, (138), 67 states have internal predecessors, (138), 0 states have call successors, (0), 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 133 [2021-11-07 08:05:49,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:05:49,421 INFO L225 Difference]: With dead ends: 152 [2021-11-07 08:05:49,421 INFO L226 Difference]: Without dead ends: 143 [2021-11-07 08:05:49,421 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1634 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=2707, Invalid=6799, Unknown=0, NotChecked=0, Total=9506 [2021-11-07 08:05:49,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2021-11-07 08:05:49,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 140. [2021-11-07 08:05:49,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 138 states have (on average 1.036231884057971) internal successors, (143), 139 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:05:49,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 143 transitions. [2021-11-07 08:05:49,424 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 143 transitions. Word has length 133 [2021-11-07 08:05:49,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:05:49,425 INFO L470 AbstractCegarLoop]: Abstraction has 140 states and 143 transitions. [2021-11-07 08:05:49,425 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 67 states have (on average 2.0597014925373136) internal successors, (138), 67 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:05:49,425 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 143 transitions. [2021-11-07 08:05:49,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-11-07 08:05:49,426 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:05:49,426 INFO L513 BasicCegarLoop]: trace histogram [32, 32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:05:49,452 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2021-11-07 08:05:49,636 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:05:49,636 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-07 08:05:49,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:05:49,637 INFO L85 PathProgramCache]: Analyzing trace with hash -732409069, now seen corresponding path program 32 times [2021-11-07 08:05:49,637 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:05:49,637 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213974917] [2021-11-07 08:05:49,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:05:49,637 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:05:49,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:05:51,068 INFO L134 CoverageAnalysis]: Checked inductivity of 2016 backedges. 0 proven. 2016 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:05:51,068 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:05:51,068 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213974917] [2021-11-07 08:05:51,068 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213974917] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:05:51,068 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [853435006] [2021-11-07 08:05:51,069 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 08:05:51,069 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:05:51,069 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:05:51,069 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:05:51,070 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2021-11-07 08:05:51,845 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 08:05:51,845 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 08:05:51,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 66 conjunts are in the unsatisfiable core [2021-11-07 08:05:51,850 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:05:52,253 INFO L134 CoverageAnalysis]: Checked inductivity of 2016 backedges. 0 proven. 2016 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:05:52,253 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [853435006] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:05:52,253 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 08:05:52,254 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 67] total 69 [2021-11-07 08:05:52,254 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294218172] [2021-11-07 08:05:52,255 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2021-11-07 08:05:52,255 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:05:52,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2021-11-07 08:05:52,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1224, Invalid=3468, Unknown=0, NotChecked=0, Total=4692 [2021-11-07 08:05:52,256 INFO L87 Difference]: Start difference. First operand 140 states and 143 transitions. Second operand has 69 states, 69 states have (on average 2.0579710144927534) internal successors, (142), 69 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:05:53,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:05:53,108 INFO L93 Difference]: Finished difference Result 156 states and 162 transitions. [2021-11-07 08:05:53,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-11-07 08:05:53,112 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 2.0579710144927534) internal successors, (142), 69 states have internal predecessors, (142), 0 states have call successors, (0), 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 137 [2021-11-07 08:05:53,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:05:53,114 INFO L225 Difference]: With dead ends: 156 [2021-11-07 08:05:53,114 INFO L226 Difference]: Without dead ends: 147 [2021-11-07 08:05:53,115 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1735 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=2874, Invalid=7226, Unknown=0, NotChecked=0, Total=10100 [2021-11-07 08:05:53,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2021-11-07 08:05:53,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 144. [2021-11-07 08:05:53,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 142 states have (on average 1.0352112676056338) internal successors, (147), 143 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:05:53,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 147 transitions. [2021-11-07 08:05:53,127 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 147 transitions. Word has length 137 [2021-11-07 08:05:53,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:05:53,128 INFO L470 AbstractCegarLoop]: Abstraction has 144 states and 147 transitions. [2021-11-07 08:05:53,128 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 69 states have (on average 2.0579710144927534) internal successors, (142), 69 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:05:53,128 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 147 transitions. [2021-11-07 08:05:53,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-11-07 08:05:53,129 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:05:53,129 INFO L513 BasicCegarLoop]: trace histogram [33, 33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:05:53,175 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2021-11-07 08:05:53,344 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2021-11-07 08:05:53,344 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-07 08:05:53,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:05:53,345 INFO L85 PathProgramCache]: Analyzing trace with hash -686094961, now seen corresponding path program 33 times [2021-11-07 08:05:53,345 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:05:53,345 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668320752] [2021-11-07 08:05:53,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:05:53,345 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:05:53,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:05:54,775 INFO L134 CoverageAnalysis]: Checked inductivity of 2145 backedges. 0 proven. 2145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:05:54,775 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:05:54,775 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668320752] [2021-11-07 08:05:54,776 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668320752] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:05:54,776 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [720151671] [2021-11-07 08:05:54,776 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 08:05:54,776 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:05:54,776 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:05:54,777 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:05:54,778 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2021-11-07 08:05:56,641 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 34 check-sat command(s) [2021-11-07 08:05:56,641 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 08:05:56,646 INFO L263 TraceCheckSpWp]: Trace formula consists of 372 conjuncts, 68 conjunts are in the unsatisfiable core [2021-11-07 08:05:56,648 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:05:57,105 INFO L134 CoverageAnalysis]: Checked inductivity of 2145 backedges. 0 proven. 2145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:05:57,105 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [720151671] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:05:57,105 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 08:05:57,106 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 69] total 71 [2021-11-07 08:05:57,106 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196087872] [2021-11-07 08:05:57,108 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2021-11-07 08:05:57,108 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:05:57,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2021-11-07 08:05:57,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1295, Invalid=3675, Unknown=0, NotChecked=0, Total=4970 [2021-11-07 08:05:57,111 INFO L87 Difference]: Start difference. First operand 144 states and 147 transitions. Second operand has 71 states, 71 states have (on average 2.056338028169014) internal successors, (146), 71 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:05:57,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:05:57,965 INFO L93 Difference]: Finished difference Result 160 states and 166 transitions. [2021-11-07 08:05:57,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2021-11-07 08:05:57,965 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 71 states have (on average 2.056338028169014) internal successors, (146), 71 states have internal predecessors, (146), 0 states have call successors, (0), 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 141 [2021-11-07 08:05:57,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:05:57,966 INFO L225 Difference]: With dead ends: 160 [2021-11-07 08:05:57,966 INFO L226 Difference]: Without dead ends: 151 [2021-11-07 08:05:57,967 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1839 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=3046, Invalid=7666, Unknown=0, NotChecked=0, Total=10712 [2021-11-07 08:05:57,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2021-11-07 08:05:57,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 148. [2021-11-07 08:05:57,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 146 states have (on average 1.0342465753424657) internal successors, (151), 147 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:05:57,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 151 transitions. [2021-11-07 08:05:57,977 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 151 transitions. Word has length 141 [2021-11-07 08:05:57,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:05:57,977 INFO L470 AbstractCegarLoop]: Abstraction has 148 states and 151 transitions. [2021-11-07 08:05:57,978 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 71 states have (on average 2.056338028169014) internal successors, (146), 71 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:05:57,978 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 151 transitions. [2021-11-07 08:05:57,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-11-07 08:05:57,979 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:05:57,979 INFO L513 BasicCegarLoop]: trace histogram [34, 34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:05:58,018 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2021-11-07 08:05:58,192 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2021-11-07 08:05:58,192 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-07 08:05:58,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:05:58,192 INFO L85 PathProgramCache]: Analyzing trace with hash 2080905739, now seen corresponding path program 34 times [2021-11-07 08:05:58,193 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:05:58,193 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837829186] [2021-11-07 08:05:58,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:05:58,193 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:05:58,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:05:59,761 INFO L134 CoverageAnalysis]: Checked inductivity of 2278 backedges. 0 proven. 2278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:05:59,762 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:05:59,762 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837829186] [2021-11-07 08:05:59,762 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837829186] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:05:59,762 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2101809915] [2021-11-07 08:05:59,762 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-07 08:05:59,762 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:05:59,762 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:05:59,763 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:05:59,764 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2021-11-07 08:06:00,675 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-07 08:06:00,676 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 08:06:00,678 INFO L263 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 70 conjunts are in the unsatisfiable core [2021-11-07 08:06:00,681 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:06:01,121 INFO L134 CoverageAnalysis]: Checked inductivity of 2278 backedges. 0 proven. 2278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:06:01,121 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2101809915] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:06:01,122 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 08:06:01,122 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [71, 71] total 73 [2021-11-07 08:06:01,122 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82971779] [2021-11-07 08:06:01,123 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2021-11-07 08:06:01,123 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:06:01,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2021-11-07 08:06:01,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1368, Invalid=3888, Unknown=0, NotChecked=0, Total=5256 [2021-11-07 08:06:01,125 INFO L87 Difference]: Start difference. First operand 148 states and 151 transitions. Second operand has 73 states, 73 states have (on average 2.0547945205479454) internal successors, (150), 73 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:06:01,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:06:01,984 INFO L93 Difference]: Finished difference Result 164 states and 170 transitions. [2021-11-07 08:06:01,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2021-11-07 08:06:01,985 INFO L78 Accepts]: Start accepts. Automaton has has 73 states, 73 states have (on average 2.0547945205479454) internal successors, (150), 73 states have internal predecessors, (150), 0 states have call successors, (0), 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 145 [2021-11-07 08:06:01,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:06:01,986 INFO L225 Difference]: With dead ends: 164 [2021-11-07 08:06:01,986 INFO L226 Difference]: Without dead ends: 155 [2021-11-07 08:06:01,987 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1946 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=3223, Invalid=8119, Unknown=0, NotChecked=0, Total=11342 [2021-11-07 08:06:01,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2021-11-07 08:06:01,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 152. [2021-11-07 08:06:01,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 150 states have (on average 1.0333333333333334) internal successors, (155), 151 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:06:01,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 155 transitions. [2021-11-07 08:06:01,993 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 155 transitions. Word has length 145 [2021-11-07 08:06:01,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:06:01,993 INFO L470 AbstractCegarLoop]: Abstraction has 152 states and 155 transitions. [2021-11-07 08:06:01,993 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 73 states, 73 states have (on average 2.0547945205479454) internal successors, (150), 73 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:06:01,994 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 155 transitions. [2021-11-07 08:06:01,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-11-07 08:06:01,995 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:06:01,995 INFO L513 BasicCegarLoop]: trace histogram [35, 35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:06:02,027 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2021-11-07 08:06:02,208 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2021-11-07 08:06:02,208 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-07 08:06:02,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:06:02,208 INFO L85 PathProgramCache]: Analyzing trace with hash 52334727, now seen corresponding path program 35 times [2021-11-07 08:06:02,209 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:06:02,209 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173085428] [2021-11-07 08:06:02,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:06:02,209 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:06:02,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:06:04,029 INFO L134 CoverageAnalysis]: Checked inductivity of 2415 backedges. 0 proven. 2415 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:06:04,030 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:06:04,030 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173085428] [2021-11-07 08:06:04,030 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173085428] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:06:04,030 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2067111128] [2021-11-07 08:06:04,030 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-07 08:06:04,031 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:06:04,031 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:06:04,047 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:06:04,056 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2021-11-07 08:06:06,670 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 36 check-sat command(s) [2021-11-07 08:06:06,670 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 08:06:06,677 INFO L263 TraceCheckSpWp]: Trace formula consists of 392 conjuncts, 72 conjunts are in the unsatisfiable core [2021-11-07 08:06:06,679 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:06:07,147 INFO L134 CoverageAnalysis]: Checked inductivity of 2415 backedges. 0 proven. 2415 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:06:07,148 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2067111128] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:06:07,148 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 08:06:07,148 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [73, 73] total 75 [2021-11-07 08:06:07,149 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779432708] [2021-11-07 08:06:07,149 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 75 states [2021-11-07 08:06:07,150 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:06:07,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2021-11-07 08:06:07,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1443, Invalid=4107, Unknown=0, NotChecked=0, Total=5550 [2021-11-07 08:06:07,151 INFO L87 Difference]: Start difference. First operand 152 states and 155 transitions. Second operand has 75 states, 75 states have (on average 2.0533333333333332) internal successors, (154), 75 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:06:08,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:06:08,249 INFO L93 Difference]: Finished difference Result 168 states and 174 transitions. [2021-11-07 08:06:08,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2021-11-07 08:06:08,250 INFO L78 Accepts]: Start accepts. Automaton has has 75 states, 75 states have (on average 2.0533333333333332) internal successors, (154), 75 states have internal predecessors, (154), 0 states have call successors, (0), 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 149 [2021-11-07 08:06:08,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:06:08,251 INFO L225 Difference]: With dead ends: 168 [2021-11-07 08:06:08,251 INFO L226 Difference]: Without dead ends: 159 [2021-11-07 08:06:08,253 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2056 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=3405, Invalid=8585, Unknown=0, NotChecked=0, Total=11990 [2021-11-07 08:06:08,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2021-11-07 08:06:08,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 156. [2021-11-07 08:06:08,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 154 states have (on average 1.0324675324675325) internal successors, (159), 155 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:06:08,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 159 transitions. [2021-11-07 08:06:08,259 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 159 transitions. Word has length 149 [2021-11-07 08:06:08,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:06:08,260 INFO L470 AbstractCegarLoop]: Abstraction has 156 states and 159 transitions. [2021-11-07 08:06:08,260 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 75 states, 75 states have (on average 2.0533333333333332) internal successors, (154), 75 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:06:08,260 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 159 transitions. [2021-11-07 08:06:08,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2021-11-07 08:06:08,262 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:06:08,262 INFO L513 BasicCegarLoop]: trace histogram [36, 36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:06:08,311 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2021-11-07 08:06:08,462 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2021-11-07 08:06:08,463 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-07 08:06:08,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:06:08,463 INFO L85 PathProgramCache]: Analyzing trace with hash -1797428989, now seen corresponding path program 36 times [2021-11-07 08:06:08,463 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:06:08,463 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588036909] [2021-11-07 08:06:08,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:06:08,464 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:06:08,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:06:10,288 INFO L134 CoverageAnalysis]: Checked inductivity of 2556 backedges. 0 proven. 2556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:06:10,289 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:06:10,289 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588036909] [2021-11-07 08:06:10,289 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588036909] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:06:10,289 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [224853564] [2021-11-07 08:06:10,289 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-07 08:06:10,289 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:06:10,289 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:06:10,290 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:06:10,303 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2021-11-07 08:06:42,203 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 37 check-sat command(s) [2021-11-07 08:06:42,204 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 08:06:42,245 INFO L263 TraceCheckSpWp]: Trace formula consists of 402 conjuncts, 74 conjunts are in the unsatisfiable core [2021-11-07 08:06:42,248 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:06:42,674 INFO L134 CoverageAnalysis]: Checked inductivity of 2556 backedges. 0 proven. 2556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:06:42,674 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [224853564] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:06:42,674 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 08:06:42,675 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [75, 75] total 77 [2021-11-07 08:06:42,675 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988937118] [2021-11-07 08:06:42,675 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 77 states [2021-11-07 08:06:42,675 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:06:42,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2021-11-07 08:06:42,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1520, Invalid=4332, Unknown=0, NotChecked=0, Total=5852 [2021-11-07 08:06:42,677 INFO L87 Difference]: Start difference. First operand 156 states and 159 transitions. Second operand has 77 states, 77 states have (on average 2.051948051948052) internal successors, (158), 77 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:06:43,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:06:43,639 INFO L93 Difference]: Finished difference Result 172 states and 178 transitions. [2021-11-07 08:06:43,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2021-11-07 08:06:43,639 INFO L78 Accepts]: Start accepts. Automaton has has 77 states, 77 states have (on average 2.051948051948052) internal successors, (158), 77 states have internal predecessors, (158), 0 states have call successors, (0), 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 153 [2021-11-07 08:06:43,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:06:43,641 INFO L225 Difference]: With dead ends: 172 [2021-11-07 08:06:43,641 INFO L226 Difference]: Without dead ends: 163 [2021-11-07 08:06:43,642 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2169 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=3592, Invalid=9064, Unknown=0, NotChecked=0, Total=12656 [2021-11-07 08:06:43,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2021-11-07 08:06:43,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 160. [2021-11-07 08:06:43,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 158 states have (on average 1.0316455696202531) internal successors, (163), 159 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:06:43,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 163 transitions. [2021-11-07 08:06:43,648 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 163 transitions. Word has length 153 [2021-11-07 08:06:43,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:06:43,648 INFO L470 AbstractCegarLoop]: Abstraction has 160 states and 163 transitions. [2021-11-07 08:06:43,648 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 77 states, 77 states have (on average 2.051948051948052) internal successors, (158), 77 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:06:43,649 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 163 transitions. [2021-11-07 08:06:43,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-11-07 08:06:43,649 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:06:43,650 INFO L513 BasicCegarLoop]: trace histogram [37, 37, 37, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:06:43,695 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2021-11-07 08:06:43,863 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2021-11-07 08:06:43,863 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-07 08:06:43,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:06:43,863 INFO L85 PathProgramCache]: Analyzing trace with hash 37987199, now seen corresponding path program 37 times [2021-11-07 08:06:43,864 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:06:43,864 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033035215] [2021-11-07 08:06:43,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:06:43,864 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:06:43,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:06:45,632 INFO L134 CoverageAnalysis]: Checked inductivity of 2701 backedges. 0 proven. 2701 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:06:45,633 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:06:45,633 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033035215] [2021-11-07 08:06:45,633 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033035215] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:06:45,633 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [539134992] [2021-11-07 08:06:45,633 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-07 08:06:45,634 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:06:45,634 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:06:45,640 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:06:45,659 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2021-11-07 08:06:46,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:06:46,677 INFO L263 TraceCheckSpWp]: Trace formula consists of 412 conjuncts, 76 conjunts are in the unsatisfiable core [2021-11-07 08:06:46,679 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:06:47,263 INFO L134 CoverageAnalysis]: Checked inductivity of 2701 backedges. 0 proven. 2701 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:06:47,263 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [539134992] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:06:47,263 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 08:06:47,264 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [77, 77] total 79 [2021-11-07 08:06:47,264 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175443892] [2021-11-07 08:06:47,264 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 79 states [2021-11-07 08:06:47,265 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:06:47,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2021-11-07 08:06:47,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1599, Invalid=4563, Unknown=0, NotChecked=0, Total=6162 [2021-11-07 08:06:47,266 INFO L87 Difference]: Start difference. First operand 160 states and 163 transitions. Second operand has 79 states, 79 states have (on average 2.050632911392405) internal successors, (162), 79 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:06:48,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:06:48,366 INFO L93 Difference]: Finished difference Result 176 states and 182 transitions. [2021-11-07 08:06:48,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2021-11-07 08:06:48,366 INFO L78 Accepts]: Start accepts. Automaton has has 79 states, 79 states have (on average 2.050632911392405) internal successors, (162), 79 states have internal predecessors, (162), 0 states have call successors, (0), 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 157 [2021-11-07 08:06:48,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:06:48,367 INFO L225 Difference]: With dead ends: 176 [2021-11-07 08:06:48,367 INFO L226 Difference]: Without dead ends: 167 [2021-11-07 08:06:48,368 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2285 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=3784, Invalid=9556, Unknown=0, NotChecked=0, Total=13340 [2021-11-07 08:06:48,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2021-11-07 08:06:48,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 164. [2021-11-07 08:06:48,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 162 states have (on average 1.0308641975308641) internal successors, (167), 163 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:06:48,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 167 transitions. [2021-11-07 08:06:48,373 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 167 transitions. Word has length 157 [2021-11-07 08:06:48,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:06:48,374 INFO L470 AbstractCegarLoop]: Abstraction has 164 states and 167 transitions. [2021-11-07 08:06:48,374 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 79 states, 79 states have (on average 2.050632911392405) internal successors, (162), 79 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:06:48,374 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 167 transitions. [2021-11-07 08:06:48,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-11-07 08:06:48,375 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:06:48,375 INFO L513 BasicCegarLoop]: trace histogram [38, 38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:06:48,410 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2021-11-07 08:06:48,588 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2021-11-07 08:06:48,588 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-07 08:06:48,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:06:48,588 INFO L85 PathProgramCache]: Analyzing trace with hash -2066726917, now seen corresponding path program 38 times [2021-11-07 08:06:48,589 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:06:48,589 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826389847] [2021-11-07 08:06:48,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:06:48,589 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:06:48,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:06:50,345 INFO L134 CoverageAnalysis]: Checked inductivity of 2850 backedges. 0 proven. 2850 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:06:50,345 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:06:50,346 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826389847] [2021-11-07 08:06:50,346 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826389847] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:06:50,346 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1314969646] [2021-11-07 08:06:50,346 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 08:06:50,346 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:06:50,346 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:06:50,348 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:06:50,348 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2021-11-07 08:06:51,421 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 08:06:51,421 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 08:06:51,424 INFO L263 TraceCheckSpWp]: Trace formula consists of 422 conjuncts, 78 conjunts are in the unsatisfiable core [2021-11-07 08:06:51,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:06:51,918 INFO L134 CoverageAnalysis]: Checked inductivity of 2850 backedges. 0 proven. 2850 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:06:51,919 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1314969646] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:06:51,919 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 08:06:51,919 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [79, 79] total 81 [2021-11-07 08:06:51,919 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561366358] [2021-11-07 08:06:51,920 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 81 states [2021-11-07 08:06:51,920 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:06:51,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2021-11-07 08:06:51,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1680, Invalid=4800, Unknown=0, NotChecked=0, Total=6480 [2021-11-07 08:06:51,922 INFO L87 Difference]: Start difference. First operand 164 states and 167 transitions. Second operand has 81 states, 81 states have (on average 2.049382716049383) internal successors, (166), 81 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:06:53,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:06:53,050 INFO L93 Difference]: Finished difference Result 180 states and 186 transitions. [2021-11-07 08:06:53,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2021-11-07 08:06:53,051 INFO L78 Accepts]: Start accepts. Automaton has has 81 states, 81 states have (on average 2.049382716049383) internal successors, (166), 81 states have internal predecessors, (166), 0 states have call successors, (0), 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 161 [2021-11-07 08:06:53,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:06:53,052 INFO L225 Difference]: With dead ends: 180 [2021-11-07 08:06:53,053 INFO L226 Difference]: Without dead ends: 171 [2021-11-07 08:06:53,054 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2404 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=3981, Invalid=10061, Unknown=0, NotChecked=0, Total=14042 [2021-11-07 08:06:53,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2021-11-07 08:06:53,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 168. [2021-11-07 08:06:53,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 166 states have (on average 1.0301204819277108) internal successors, (171), 167 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:06:53,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 171 transitions. [2021-11-07 08:06:53,059 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 171 transitions. Word has length 161 [2021-11-07 08:06:53,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:06:53,059 INFO L470 AbstractCegarLoop]: Abstraction has 168 states and 171 transitions. [2021-11-07 08:06:53,060 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 81 states, 81 states have (on average 2.049382716049383) internal successors, (166), 81 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:06:53,060 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 171 transitions. [2021-11-07 08:06:53,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-11-07 08:06:53,061 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:06:53,061 INFO L513 BasicCegarLoop]: trace histogram [39, 39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:06:53,096 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Ended with exit code 0 [2021-11-07 08:06:53,280 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:06:53,280 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-07 08:06:53,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:06:53,281 INFO L85 PathProgramCache]: Analyzing trace with hash 2122464887, now seen corresponding path program 39 times [2021-11-07 08:06:53,281 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:06:53,281 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212099090] [2021-11-07 08:06:53,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:06:53,281 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:06:53,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:06:55,042 INFO L134 CoverageAnalysis]: Checked inductivity of 3003 backedges. 0 proven. 3003 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:06:55,042 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:06:55,042 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212099090] [2021-11-07 08:06:55,042 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212099090] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:06:55,042 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1873818192] [2021-11-07 08:06:55,042 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 08:06:55,042 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:06:55,042 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:06:55,043 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:06:55,044 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2021-11-07 08:07:40,932 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 40 check-sat command(s) [2021-11-07 08:07:40,933 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 08:07:40,984 INFO L263 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 80 conjunts are in the unsatisfiable core [2021-11-07 08:07:40,988 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:07:41,551 INFO L134 CoverageAnalysis]: Checked inductivity of 3003 backedges. 0 proven. 3003 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:07:41,551 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1873818192] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:07:41,551 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 08:07:41,552 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [81, 81] total 83 [2021-11-07 08:07:41,552 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967392018] [2021-11-07 08:07:41,556 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 83 states [2021-11-07 08:07:41,556 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:07:41,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2021-11-07 08:07:41,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1763, Invalid=5043, Unknown=0, NotChecked=0, Total=6806 [2021-11-07 08:07:41,558 INFO L87 Difference]: Start difference. First operand 168 states and 171 transitions. Second operand has 83 states, 83 states have (on average 2.0481927710843375) internal successors, (170), 83 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:07:42,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:07:42,773 INFO L93 Difference]: Finished difference Result 184 states and 190 transitions. [2021-11-07 08:07:42,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2021-11-07 08:07:42,773 INFO L78 Accepts]: Start accepts. Automaton has has 83 states, 83 states have (on average 2.0481927710843375) internal successors, (170), 83 states have internal predecessors, (170), 0 states have call successors, (0), 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 165 [2021-11-07 08:07:42,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:07:42,775 INFO L225 Difference]: With dead ends: 184 [2021-11-07 08:07:42,775 INFO L226 Difference]: Without dead ends: 175 [2021-11-07 08:07:42,777 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2526 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=4183, Invalid=10579, Unknown=0, NotChecked=0, Total=14762 [2021-11-07 08:07:42,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2021-11-07 08:07:42,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 172. [2021-11-07 08:07:42,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 170 states have (on average 1.0294117647058822) internal successors, (175), 171 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:07:42,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 175 transitions. [2021-11-07 08:07:42,785 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 175 transitions. Word has length 165 [2021-11-07 08:07:42,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:07:42,785 INFO L470 AbstractCegarLoop]: Abstraction has 172 states and 175 transitions. [2021-11-07 08:07:42,785 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 83 states, 83 states have (on average 2.0481927710843375) internal successors, (170), 83 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:07:42,786 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 175 transitions. [2021-11-07 08:07:42,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2021-11-07 08:07:42,787 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:07:42,787 INFO L513 BasicCegarLoop]: trace histogram [40, 40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:07:42,845 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0 [2021-11-07 08:07:43,004 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:07:43,004 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-07 08:07:43,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:07:43,005 INFO L85 PathProgramCache]: Analyzing trace with hash 970497779, now seen corresponding path program 40 times [2021-11-07 08:07:43,005 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:07:43,005 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502984774] [2021-11-07 08:07:43,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:07:43,005 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:07:43,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:07:45,225 INFO L134 CoverageAnalysis]: Checked inductivity of 3160 backedges. 0 proven. 3160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:07:45,225 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:07:45,225 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502984774] [2021-11-07 08:07:45,226 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502984774] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:07:45,226 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1631247377] [2021-11-07 08:07:45,226 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-07 08:07:45,226 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:07:45,226 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:07:45,227 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:07:45,228 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2021-11-07 08:07:46,541 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-07 08:07:46,542 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 08:07:46,545 INFO L263 TraceCheckSpWp]: Trace formula consists of 442 conjuncts, 82 conjunts are in the unsatisfiable core [2021-11-07 08:07:46,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:07:47,135 INFO L134 CoverageAnalysis]: Checked inductivity of 3160 backedges. 0 proven. 3160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:07:47,135 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1631247377] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:07:47,135 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 08:07:47,135 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [83, 83] total 85 [2021-11-07 08:07:47,135 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574746831] [2021-11-07 08:07:47,136 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 85 states [2021-11-07 08:07:47,136 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:07:47,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2021-11-07 08:07:47,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1848, Invalid=5292, Unknown=0, NotChecked=0, Total=7140 [2021-11-07 08:07:47,137 INFO L87 Difference]: Start difference. First operand 172 states and 175 transitions. Second operand has 85 states, 85 states have (on average 2.0470588235294116) internal successors, (174), 85 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:07:48,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:07:48,445 INFO L93 Difference]: Finished difference Result 188 states and 194 transitions. [2021-11-07 08:07:48,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2021-11-07 08:07:48,446 INFO L78 Accepts]: Start accepts. Automaton has has 85 states, 85 states have (on average 2.0470588235294116) internal successors, (174), 85 states have internal predecessors, (174), 0 states have call successors, (0), 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 169 [2021-11-07 08:07:48,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:07:48,447 INFO L225 Difference]: With dead ends: 188 [2021-11-07 08:07:48,447 INFO L226 Difference]: Without dead ends: 179 [2021-11-07 08:07:48,447 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2651 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=4390, Invalid=11110, Unknown=0, NotChecked=0, Total=15500 [2021-11-07 08:07:48,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2021-11-07 08:07:48,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 176. [2021-11-07 08:07:48,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 174 states have (on average 1.028735632183908) internal successors, (179), 175 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:07:48,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 179 transitions. [2021-11-07 08:07:48,451 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 179 transitions. Word has length 169 [2021-11-07 08:07:48,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:07:48,451 INFO L470 AbstractCegarLoop]: Abstraction has 176 states and 179 transitions. [2021-11-07 08:07:48,452 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 85 states, 85 states have (on average 2.0470588235294116) internal successors, (174), 85 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:07:48,452 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 179 transitions. [2021-11-07 08:07:48,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2021-11-07 08:07:48,453 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:07:48,453 INFO L513 BasicCegarLoop]: trace histogram [41, 41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:07:48,482 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Ended with exit code 0 [2021-11-07 08:07:48,653 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2021-11-07 08:07:48,653 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-07 08:07:48,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:07:48,654 INFO L85 PathProgramCache]: Analyzing trace with hash -1445830289, now seen corresponding path program 41 times [2021-11-07 08:07:48,654 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:07:48,654 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533596937] [2021-11-07 08:07:48,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:07:48,654 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:07:48,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:07:50,892 INFO L134 CoverageAnalysis]: Checked inductivity of 3321 backedges. 0 proven. 3321 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:07:50,893 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:07:50,893 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533596937] [2021-11-07 08:07:50,893 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533596937] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:07:50,893 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [171696570] [2021-11-07 08:07:50,893 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-07 08:07:50,893 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:07:50,893 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:07:50,894 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:07:50,895 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2021-11-07 08:08:03,226 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 42 check-sat command(s) [2021-11-07 08:08:03,226 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 08:08:03,244 INFO L263 TraceCheckSpWp]: Trace formula consists of 452 conjuncts, 84 conjunts are in the unsatisfiable core [2021-11-07 08:08:03,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:08:03,770 INFO L134 CoverageAnalysis]: Checked inductivity of 3321 backedges. 0 proven. 3321 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:08:03,770 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [171696570] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:08:03,770 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 08:08:03,770 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [85, 85] total 87 [2021-11-07 08:08:03,771 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919478936] [2021-11-07 08:08:03,771 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 87 states [2021-11-07 08:08:03,771 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:08:03,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2021-11-07 08:08:03,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1935, Invalid=5547, Unknown=0, NotChecked=0, Total=7482 [2021-11-07 08:08:03,773 INFO L87 Difference]: Start difference. First operand 176 states and 179 transitions. Second operand has 87 states, 87 states have (on average 2.045977011494253) internal successors, (178), 87 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:08:04,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:08:04,977 INFO L93 Difference]: Finished difference Result 192 states and 198 transitions. [2021-11-07 08:08:04,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2021-11-07 08:08:04,977 INFO L78 Accepts]: Start accepts. Automaton has has 87 states, 87 states have (on average 2.045977011494253) internal successors, (178), 87 states have internal predecessors, (178), 0 states have call successors, (0), 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 173 [2021-11-07 08:08:04,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:08:04,978 INFO L225 Difference]: With dead ends: 192 [2021-11-07 08:08:04,978 INFO L226 Difference]: Without dead ends: 183 [2021-11-07 08:08:04,980 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2779 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=4602, Invalid=11654, Unknown=0, NotChecked=0, Total=16256 [2021-11-07 08:08:04,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2021-11-07 08:08:04,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 180. [2021-11-07 08:08:04,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 178 states have (on average 1.0280898876404494) internal successors, (183), 179 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:08:04,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 183 transitions. [2021-11-07 08:08:04,983 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 183 transitions. Word has length 173 [2021-11-07 08:08:04,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:08:04,983 INFO L470 AbstractCegarLoop]: Abstraction has 180 states and 183 transitions. [2021-11-07 08:08:04,984 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 87 states, 87 states have (on average 2.045977011494253) internal successors, (178), 87 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:08:04,984 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 183 transitions. [2021-11-07 08:08:04,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-11-07 08:08:04,984 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:08:04,984 INFO L513 BasicCegarLoop]: trace histogram [42, 42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:08:05,012 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Ended with exit code 0 [2021-11-07 08:08:05,185 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:08:05,185 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-07 08:08:05,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:08:05,185 INFO L85 PathProgramCache]: Analyzing trace with hash 703497707, now seen corresponding path program 42 times [2021-11-07 08:08:05,185 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:08:05,185 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401136697] [2021-11-07 08:08:05,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:08:05,186 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:08:05,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:08:07,334 INFO L134 CoverageAnalysis]: Checked inductivity of 3486 backedges. 0 proven. 3486 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:08:07,334 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:08:07,334 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401136697] [2021-11-07 08:08:07,334 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401136697] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:08:07,334 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1076161570] [2021-11-07 08:08:07,335 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-07 08:08:07,335 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:08:07,335 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:08:07,340 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:08:07,358 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2021-11-07 08:09:33,159 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 43 check-sat command(s) [2021-11-07 08:09:33,159 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 08:09:33,239 INFO L263 TraceCheckSpWp]: Trace formula consists of 462 conjuncts, 86 conjunts are in the unsatisfiable core [2021-11-07 08:09:33,242 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:09:33,739 INFO L134 CoverageAnalysis]: Checked inductivity of 3486 backedges. 0 proven. 3486 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:09:33,739 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1076161570] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:09:33,739 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 08:09:33,739 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [87, 87] total 89 [2021-11-07 08:09:33,740 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549438286] [2021-11-07 08:09:33,740 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 89 states [2021-11-07 08:09:33,740 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:09:33,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2021-11-07 08:09:33,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2024, Invalid=5808, Unknown=0, NotChecked=0, Total=7832 [2021-11-07 08:09:33,741 INFO L87 Difference]: Start difference. First operand 180 states and 183 transitions. Second operand has 89 states, 89 states have (on average 2.044943820224719) internal successors, (182), 89 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) [2021-11-07 08:09:35,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:09:35,137 INFO L93 Difference]: Finished difference Result 196 states and 202 transitions. [2021-11-07 08:09:35,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2021-11-07 08:09:35,137 INFO L78 Accepts]: Start accepts. Automaton has has 89 states, 89 states have (on average 2.044943820224719) internal successors, (182), 89 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 177 [2021-11-07 08:09:35,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:09:35,138 INFO L225 Difference]: With dead ends: 196 [2021-11-07 08:09:35,139 INFO L226 Difference]: Without dead ends: 187 [2021-11-07 08:09:35,145 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2910 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=4819, Invalid=12211, Unknown=0, NotChecked=0, Total=17030 [2021-11-07 08:09:35,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2021-11-07 08:09:35,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 184. [2021-11-07 08:09:35,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 182 states have (on average 1.0274725274725274) internal successors, (187), 183 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:09:35,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 187 transitions. [2021-11-07 08:09:35,150 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 187 transitions. Word has length 177 [2021-11-07 08:09:35,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:09:35,151 INFO L470 AbstractCegarLoop]: Abstraction has 184 states and 187 transitions. [2021-11-07 08:09:35,151 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 89 states, 89 states have (on average 2.044943820224719) internal successors, (182), 89 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) [2021-11-07 08:09:35,151 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 187 transitions. [2021-11-07 08:09:35,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2021-11-07 08:09:35,152 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:09:35,153 INFO L513 BasicCegarLoop]: trace histogram [43, 43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:09:35,209 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2021-11-07 08:09:35,368 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2021-11-07 08:09:35,368 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-07 08:09:35,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:09:35,368 INFO L85 PathProgramCache]: Analyzing trace with hash 1043074151, now seen corresponding path program 43 times [2021-11-07 08:09:35,368 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:09:35,368 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192173308] [2021-11-07 08:09:35,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:09:35,369 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:09:35,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:09:37,719 INFO L134 CoverageAnalysis]: Checked inductivity of 3655 backedges. 0 proven. 3655 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:09:37,720 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:09:37,720 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192173308] [2021-11-07 08:09:37,720 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192173308] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:09:37,720 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1029472265] [2021-11-07 08:09:37,720 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-07 08:09:37,720 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:09:37,721 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:09:37,745 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:09:37,770 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2021-11-07 08:09:39,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:09:39,078 INFO L263 TraceCheckSpWp]: Trace formula consists of 472 conjuncts, 88 conjunts are in the unsatisfiable core [2021-11-07 08:09:39,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:09:39,554 INFO L134 CoverageAnalysis]: Checked inductivity of 3655 backedges. 0 proven. 3655 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:09:39,554 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1029472265] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:09:39,554 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 08:09:39,554 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [89, 89] total 91 [2021-11-07 08:09:39,554 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777997432] [2021-11-07 08:09:39,554 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 91 states [2021-11-07 08:09:39,555 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:09:39,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2021-11-07 08:09:39,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2115, Invalid=6075, Unknown=0, NotChecked=0, Total=8190 [2021-11-07 08:09:39,556 INFO L87 Difference]: Start difference. First operand 184 states and 187 transitions. Second operand has 91 states, 91 states have (on average 2.043956043956044) internal successors, (186), 91 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:09:40,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:09:40,836 INFO L93 Difference]: Finished difference Result 200 states and 206 transitions. [2021-11-07 08:09:40,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2021-11-07 08:09:40,837 INFO L78 Accepts]: Start accepts. Automaton has has 91 states, 91 states have (on average 2.043956043956044) internal successors, (186), 91 states have internal predecessors, (186), 0 states have call successors, (0), 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 181 [2021-11-07 08:09:40,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:09:40,838 INFO L225 Difference]: With dead ends: 200 [2021-11-07 08:09:40,838 INFO L226 Difference]: Without dead ends: 191 [2021-11-07 08:09:40,840 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3044 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=5041, Invalid=12781, Unknown=0, NotChecked=0, Total=17822 [2021-11-07 08:09:40,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2021-11-07 08:09:40,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 188. [2021-11-07 08:09:40,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 186 states have (on average 1.0268817204301075) internal successors, (191), 187 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:09:40,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 191 transitions. [2021-11-07 08:09:40,845 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 191 transitions. Word has length 181 [2021-11-07 08:09:40,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:09:40,846 INFO L470 AbstractCegarLoop]: Abstraction has 188 states and 191 transitions. [2021-11-07 08:09:40,846 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 91 states, 91 states have (on average 2.043956043956044) internal successors, (186), 91 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:09:40,846 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 191 transitions. [2021-11-07 08:09:40,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2021-11-07 08:09:40,848 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:09:40,848 INFO L513 BasicCegarLoop]: trace histogram [44, 44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:09:40,872 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Ended with exit code 0 [2021-11-07 08:09:41,052 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2021-11-07 08:09:41,052 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-07 08:09:41,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:09:41,052 INFO L85 PathProgramCache]: Analyzing trace with hash 1393161443, now seen corresponding path program 44 times [2021-11-07 08:09:41,053 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:09:41,053 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520640494] [2021-11-07 08:09:41,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:09:41,053 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:09:41,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:09:43,381 INFO L134 CoverageAnalysis]: Checked inductivity of 3828 backedges. 0 proven. 3828 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:09:43,382 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:09:43,382 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520640494] [2021-11-07 08:09:43,382 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520640494] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:09:43,382 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1661920299] [2021-11-07 08:09:43,382 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 08:09:43,382 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:09:43,382 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:09:43,383 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:09:43,384 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2021-11-07 08:09:44,756 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 08:09:44,756 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 08:09:44,759 INFO L263 TraceCheckSpWp]: Trace formula consists of 482 conjuncts, 90 conjunts are in the unsatisfiable core [2021-11-07 08:09:44,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:09:45,272 INFO L134 CoverageAnalysis]: Checked inductivity of 3828 backedges. 0 proven. 3828 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:09:45,273 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1661920299] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:09:45,273 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 08:09:45,273 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [91, 91] total 93 [2021-11-07 08:09:45,273 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189881229] [2021-11-07 08:09:45,274 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 93 states [2021-11-07 08:09:45,274 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:09:45,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2021-11-07 08:09:45,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2208, Invalid=6348, Unknown=0, NotChecked=0, Total=8556 [2021-11-07 08:09:45,276 INFO L87 Difference]: Start difference. First operand 188 states and 191 transitions. Second operand has 93 states, 93 states have (on average 2.043010752688172) internal successors, (190), 93 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:09:46,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:09:46,569 INFO L93 Difference]: Finished difference Result 204 states and 210 transitions. [2021-11-07 08:09:46,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2021-11-07 08:09:46,570 INFO L78 Accepts]: Start accepts. Automaton has has 93 states, 93 states have (on average 2.043010752688172) internal successors, (190), 93 states have internal predecessors, (190), 0 states have call successors, (0), 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 [2021-11-07 08:09:46,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:09:46,571 INFO L225 Difference]: With dead ends: 204 [2021-11-07 08:09:46,571 INFO L226 Difference]: Without dead ends: 195 [2021-11-07 08:09:46,572 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 319 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3181 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=5268, Invalid=13364, Unknown=0, NotChecked=0, Total=18632 [2021-11-07 08:09:46,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2021-11-07 08:09:46,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 192. [2021-11-07 08:09:46,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 190 states have (on average 1.0263157894736843) internal successors, (195), 191 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:09:46,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 195 transitions. [2021-11-07 08:09:46,576 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 195 transitions. Word has length 185 [2021-11-07 08:09:46,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:09:46,576 INFO L470 AbstractCegarLoop]: Abstraction has 192 states and 195 transitions. [2021-11-07 08:09:46,576 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 93 states, 93 states have (on average 2.043010752688172) internal successors, (190), 93 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:09:46,576 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 195 transitions. [2021-11-07 08:09:46,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-11-07 08:09:46,603 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:09:46,603 INFO L513 BasicCegarLoop]: trace histogram [45, 45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:09:46,627 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0 [2021-11-07 08:09:46,804 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46,46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:09:46,804 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-07 08:09:46,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:09:46,804 INFO L85 PathProgramCache]: Analyzing trace with hash 2106015583, now seen corresponding path program 45 times [2021-11-07 08:09:46,804 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:09:46,805 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338872540] [2021-11-07 08:09:46,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:09:46,805 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:09:46,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:09:49,149 INFO L134 CoverageAnalysis]: Checked inductivity of 4005 backedges. 0 proven. 4005 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:09:49,149 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:09:49,150 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338872540] [2021-11-07 08:09:49,150 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338872540] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:09:49,150 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [743771151] [2021-11-07 08:09:49,150 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 08:09:49,150 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:09:49,150 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:09:49,151 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:09:49,152 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2021-11-07 08:11:09,631 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 46 check-sat command(s) [2021-11-07 08:11:09,631 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 08:11:09,707 INFO L263 TraceCheckSpWp]: Trace formula consists of 492 conjuncts, 92 conjunts are in the unsatisfiable core [2021-11-07 08:11:09,710 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:11:10,285 INFO L134 CoverageAnalysis]: Checked inductivity of 4005 backedges. 0 proven. 4005 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:11:10,286 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [743771151] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:11:10,286 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 08:11:10,286 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [93, 93] total 95 [2021-11-07 08:11:10,286 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059276388] [2021-11-07 08:11:10,286 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 95 states [2021-11-07 08:11:10,287 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:11:10,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2021-11-07 08:11:10,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2303, Invalid=6627, Unknown=0, NotChecked=0, Total=8930 [2021-11-07 08:11:10,288 INFO L87 Difference]: Start difference. First operand 192 states and 195 transitions. Second operand has 95 states, 95 states have (on average 2.042105263157895) internal successors, (194), 95 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:11:11,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:11:11,688 INFO L93 Difference]: Finished difference Result 208 states and 214 transitions. [2021-11-07 08:11:11,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2021-11-07 08:11:11,689 INFO L78 Accepts]: Start accepts. Automaton has has 95 states, 95 states have (on average 2.042105263157895) internal successors, (194), 95 states have internal predecessors, (194), 0 states have call successors, (0), 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 189 [2021-11-07 08:11:11,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:11:11,690 INFO L225 Difference]: With dead ends: 208 [2021-11-07 08:11:11,690 INFO L226 Difference]: Without dead ends: 199 [2021-11-07 08:11:11,692 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3321 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=5500, Invalid=13960, Unknown=0, NotChecked=0, Total=19460 [2021-11-07 08:11:11,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2021-11-07 08:11:11,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 196. [2021-11-07 08:11:11,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 194 states have (on average 1.0257731958762886) internal successors, (199), 195 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:11:11,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 199 transitions. [2021-11-07 08:11:11,695 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 199 transitions. Word has length 189 [2021-11-07 08:11:11,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:11:11,696 INFO L470 AbstractCegarLoop]: Abstraction has 196 states and 199 transitions. [2021-11-07 08:11:11,696 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 95 states, 95 states have (on average 2.042105263157895) internal successors, (194), 95 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:11:11,696 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 199 transitions. [2021-11-07 08:11:11,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2021-11-07 08:11:11,697 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:11:11,697 INFO L513 BasicCegarLoop]: trace histogram [46, 46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:11:11,740 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2021-11-07 08:11:11,904 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47,47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:11:11,904 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-07 08:11:11,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:11:11,904 INFO L85 PathProgramCache]: Analyzing trace with hash 992144347, now seen corresponding path program 46 times [2021-11-07 08:11:11,904 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:11:11,905 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239354469] [2021-11-07 08:11:11,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:11:11,905 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:11:11,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:11:14,287 INFO L134 CoverageAnalysis]: Checked inductivity of 4186 backedges. 0 proven. 4186 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:11:14,287 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:11:14,287 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239354469] [2021-11-07 08:11:14,287 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239354469] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:11:14,287 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [269757650] [2021-11-07 08:11:14,287 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-07 08:11:14,287 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:11:14,287 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:11:14,288 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:11:14,289 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2021-11-07 08:11:15,790 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-07 08:11:15,790 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 08:11:15,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 502 conjuncts, 94 conjunts are in the unsatisfiable core [2021-11-07 08:11:15,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:11:16,304 INFO L134 CoverageAnalysis]: Checked inductivity of 4186 backedges. 0 proven. 4186 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:11:16,304 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [269757650] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:11:16,304 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 08:11:16,304 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 95] total 97 [2021-11-07 08:11:16,304 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514306132] [2021-11-07 08:11:16,305 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 97 states [2021-11-07 08:11:16,305 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:11:16,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2021-11-07 08:11:16,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2400, Invalid=6912, Unknown=0, NotChecked=0, Total=9312 [2021-11-07 08:11:16,307 INFO L87 Difference]: Start difference. First operand 196 states and 199 transitions. Second operand has 97 states, 97 states have (on average 2.0412371134020617) internal successors, (198), 97 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:11:17,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:11:17,757 INFO L93 Difference]: Finished difference Result 212 states and 218 transitions. [2021-11-07 08:11:17,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2021-11-07 08:11:17,757 INFO L78 Accepts]: Start accepts. Automaton has has 97 states, 97 states have (on average 2.0412371134020617) internal successors, (198), 97 states have internal predecessors, (198), 0 states have call successors, (0), 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 193 [2021-11-07 08:11:17,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:11:17,759 INFO L225 Difference]: With dead ends: 212 [2021-11-07 08:11:17,759 INFO L226 Difference]: Without dead ends: 203 [2021-11-07 08:11:17,760 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 333 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3464 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=5737, Invalid=14569, Unknown=0, NotChecked=0, Total=20306 [2021-11-07 08:11:17,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2021-11-07 08:11:17,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 200. [2021-11-07 08:11:17,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 198 states have (on average 1.0252525252525253) internal successors, (203), 199 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:11:17,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 203 transitions. [2021-11-07 08:11:17,764 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 203 transitions. Word has length 193 [2021-11-07 08:11:17,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:11:17,764 INFO L470 AbstractCegarLoop]: Abstraction has 200 states and 203 transitions. [2021-11-07 08:11:17,764 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 97 states, 97 states have (on average 2.0412371134020617) internal successors, (198), 97 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:11:17,764 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 203 transitions. [2021-11-07 08:11:17,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2021-11-07 08:11:17,765 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:11:17,765 INFO L513 BasicCegarLoop]: trace histogram [47, 47, 47, 47, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:11:17,793 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Forceful destruction successful, exit code 0 [2021-11-07 08:11:17,965 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2021-11-07 08:11:17,966 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-07 08:11:17,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:11:17,966 INFO L85 PathProgramCache]: Analyzing trace with hash 836500055, now seen corresponding path program 47 times [2021-11-07 08:11:17,966 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:11:17,966 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131103355] [2021-11-07 08:11:17,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:11:17,967 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:11:18,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:11:20,386 INFO L134 CoverageAnalysis]: Checked inductivity of 4371 backedges. 0 proven. 4371 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:11:20,386 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:11:20,386 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131103355] [2021-11-07 08:11:20,386 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131103355] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:11:20,386 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1954731475] [2021-11-07 08:11:20,386 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-07 08:11:20,387 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:11:20,387 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:11:20,387 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:11:20,392 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2021-11-07 08:11:48,109 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 48 check-sat command(s) [2021-11-07 08:11:48,109 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 08:11:48,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 512 conjuncts, 96 conjunts are in the unsatisfiable core [2021-11-07 08:11:48,144 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:11:48,651 INFO L134 CoverageAnalysis]: Checked inductivity of 4371 backedges. 0 proven. 4371 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:11:48,651 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1954731475] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:11:48,651 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 08:11:48,652 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 97] total 99 [2021-11-07 08:11:48,652 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099404345] [2021-11-07 08:11:48,652 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 99 states [2021-11-07 08:11:48,652 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:11:48,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2021-11-07 08:11:48,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2499, Invalid=7203, Unknown=0, NotChecked=0, Total=9702 [2021-11-07 08:11:48,653 INFO L87 Difference]: Start difference. First operand 200 states and 203 transitions. Second operand has 99 states, 99 states have (on average 2.04040404040404) internal successors, (202), 99 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:11:50,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:11:50,159 INFO L93 Difference]: Finished difference Result 216 states and 222 transitions. [2021-11-07 08:11:50,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2021-11-07 08:11:50,159 INFO L78 Accepts]: Start accepts. Automaton has has 99 states, 99 states have (on average 2.04040404040404) internal successors, (202), 99 states have internal predecessors, (202), 0 states have call successors, (0), 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 197 [2021-11-07 08:11:50,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:11:50,160 INFO L225 Difference]: With dead ends: 216 [2021-11-07 08:11:50,160 INFO L226 Difference]: Without dead ends: 207 [2021-11-07 08:11:50,161 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 340 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3610 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=5979, Invalid=15191, Unknown=0, NotChecked=0, Total=21170 [2021-11-07 08:11:50,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2021-11-07 08:11:50,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 204. [2021-11-07 08:11:50,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 202 states have (on average 1.0247524752475248) internal successors, (207), 203 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:11:50,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 207 transitions. [2021-11-07 08:11:50,166 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 207 transitions. Word has length 197 [2021-11-07 08:11:50,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:11:50,167 INFO L470 AbstractCegarLoop]: Abstraction has 204 states and 207 transitions. [2021-11-07 08:11:50,167 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 99 states, 99 states have (on average 2.04040404040404) internal successors, (202), 99 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:11:50,167 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 207 transitions. [2021-11-07 08:11:50,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2021-11-07 08:11:50,168 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:11:50,169 INFO L513 BasicCegarLoop]: trace histogram [48, 48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:11:50,207 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Ended with exit code 0 [2021-11-07 08:11:50,384 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2021-11-07 08:11:50,384 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-07 08:11:50,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:11:50,384 INFO L85 PathProgramCache]: Analyzing trace with hash -265196845, now seen corresponding path program 48 times [2021-11-07 08:11:50,384 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:11:50,384 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961101441] [2021-11-07 08:11:50,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:11:50,385 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:11:50,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:11:53,141 INFO L134 CoverageAnalysis]: Checked inductivity of 4560 backedges. 0 proven. 4560 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:11:53,141 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:11:53,141 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961101441] [2021-11-07 08:11:53,141 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961101441] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:11:53,141 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1568132283] [2021-11-07 08:11:53,141 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-07 08:11:53,141 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:11:53,141 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:11:53,142 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:11:53,143 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2021-11-07 08:17:01,435 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 49 check-sat command(s) [2021-11-07 08:17:01,435 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 08:17:01,690 INFO L263 TraceCheckSpWp]: Trace formula consists of 522 conjuncts, 98 conjunts are in the unsatisfiable core [2021-11-07 08:17:01,693 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:17:02,313 INFO L134 CoverageAnalysis]: Checked inductivity of 4560 backedges. 0 proven. 4560 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:17:02,314 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1568132283] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:17:02,314 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 08:17:02,314 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [99, 99] total 101 [2021-11-07 08:17:02,314 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922833399] [2021-11-07 08:17:02,315 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 101 states [2021-11-07 08:17:02,315 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:17:02,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2021-11-07 08:17:02,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2600, Invalid=7500, Unknown=0, NotChecked=0, Total=10100 [2021-11-07 08:17:02,316 INFO L87 Difference]: Start difference. First operand 204 states and 207 transitions. Second operand has 101 states, 101 states have (on average 2.0396039603960396) internal successors, (206), 101 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:17:04,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:17:04,143 INFO L93 Difference]: Finished difference Result 220 states and 226 transitions. [2021-11-07 08:17:04,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2021-11-07 08:17:04,144 INFO L78 Accepts]: Start accepts. Automaton has has 101 states, 101 states have (on average 2.0396039603960396) internal successors, (206), 101 states have internal predecessors, (206), 0 states have call successors, (0), 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 201 [2021-11-07 08:17:04,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:17:04,146 INFO L225 Difference]: With dead ends: 220 [2021-11-07 08:17:04,146 INFO L226 Difference]: Without dead ends: 211 [2021-11-07 08:17:04,148 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 347 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3759 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=6226, Invalid=15826, Unknown=0, NotChecked=0, Total=22052 [2021-11-07 08:17:04,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2021-11-07 08:17:04,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 208. [2021-11-07 08:17:04,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 206 states have (on average 1.0242718446601942) internal successors, (211), 207 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:17:04,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 211 transitions. [2021-11-07 08:17:04,155 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 211 transitions. Word has length 201 [2021-11-07 08:17:04,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:17:04,156 INFO L470 AbstractCegarLoop]: Abstraction has 208 states and 211 transitions. [2021-11-07 08:17:04,156 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 101 states, 101 states have (on average 2.0396039603960396) internal successors, (206), 101 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:17:04,156 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 211 transitions. [2021-11-07 08:17:04,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2021-11-07 08:17:04,158 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:17:04,158 INFO L513 BasicCegarLoop]: trace histogram [49, 49, 49, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:17:04,241 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Ended with exit code 0 [2021-11-07 08:17:04,384 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:17:04,384 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-07 08:17:04,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:17:04,385 INFO L85 PathProgramCache]: Analyzing trace with hash -1390265009, now seen corresponding path program 49 times [2021-11-07 08:17:04,385 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:17:04,385 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647022486] [2021-11-07 08:17:04,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:17:04,385 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:17:04,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:17:07,608 INFO L134 CoverageAnalysis]: Checked inductivity of 4753 backedges. 0 proven. 4753 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:17:07,608 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:17:07,608 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647022486] [2021-11-07 08:17:07,609 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647022486] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:17:07,609 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [984393826] [2021-11-07 08:17:07,609 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-07 08:17:07,609 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:17:07,609 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:17:07,612 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:17:07,613 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2021-11-07 08:17:09,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:17:09,589 INFO L263 TraceCheckSpWp]: Trace formula consists of 532 conjuncts, 100 conjunts are in the unsatisfiable core [2021-11-07 08:17:09,592 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:17:10,330 INFO L134 CoverageAnalysis]: Checked inductivity of 4753 backedges. 0 proven. 4753 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:17:10,331 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [984393826] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:17:10,331 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 08:17:10,331 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [101, 101] total 103 [2021-11-07 08:17:10,331 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993499711] [2021-11-07 08:17:10,332 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 103 states [2021-11-07 08:17:10,332 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:17:10,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2021-11-07 08:17:10,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2703, Invalid=7803, Unknown=0, NotChecked=0, Total=10506 [2021-11-07 08:17:10,334 INFO L87 Difference]: Start difference. First operand 208 states and 211 transitions. Second operand has 103 states, 103 states have (on average 2.0388349514563107) internal successors, (210), 103 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:17:12,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:17:12,295 INFO L93 Difference]: Finished difference Result 224 states and 230 transitions. [2021-11-07 08:17:12,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2021-11-07 08:17:12,296 INFO L78 Accepts]: Start accepts. Automaton has has 103 states, 103 states have (on average 2.0388349514563107) internal successors, (210), 103 states have internal predecessors, (210), 0 states have call successors, (0), 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 205 [2021-11-07 08:17:12,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:17:12,297 INFO L225 Difference]: With dead ends: 224 [2021-11-07 08:17:12,298 INFO L226 Difference]: Without dead ends: 215 [2021-11-07 08:17:12,300 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3911 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=6478, Invalid=16474, Unknown=0, NotChecked=0, Total=22952 [2021-11-07 08:17:12,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2021-11-07 08:17:12,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 212. [2021-11-07 08:17:12,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 210 states have (on average 1.0238095238095237) internal successors, (215), 211 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:17:12,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 215 transitions. [2021-11-07 08:17:12,307 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 215 transitions. Word has length 205 [2021-11-07 08:17:12,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:17:12,307 INFO L470 AbstractCegarLoop]: Abstraction has 212 states and 215 transitions. [2021-11-07 08:17:12,307 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 103 states, 103 states have (on average 2.0388349514563107) internal successors, (210), 103 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:17:12,308 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 215 transitions. [2021-11-07 08:17:12,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2021-11-07 08:17:12,309 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:17:12,309 INFO L513 BasicCegarLoop]: trace histogram [50, 50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:17:12,355 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Forceful destruction successful, exit code 0 [2021-11-07 08:17:12,524 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable51 [2021-11-07 08:17:12,524 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-07 08:17:12,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:17:12,524 INFO L85 PathProgramCache]: Analyzing trace with hash 137195979, now seen corresponding path program 50 times [2021-11-07 08:17:12,524 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:17:12,525 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139490238] [2021-11-07 08:17:12,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:17:12,525 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:17:12,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:17:15,850 INFO L134 CoverageAnalysis]: Checked inductivity of 4950 backedges. 0 proven. 4950 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:17:15,850 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:17:15,850 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139490238] [2021-11-07 08:17:15,850 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139490238] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:17:15,850 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [272618518] [2021-11-07 08:17:15,851 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 08:17:15,851 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:17:15,851 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:17:15,852 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:17:15,852 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2021-11-07 08:17:17,915 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 08:17:17,915 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 08:17:17,919 INFO L263 TraceCheckSpWp]: Trace formula consists of 542 conjuncts, 102 conjunts are in the unsatisfiable core [2021-11-07 08:17:17,922 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:17:18,690 INFO L134 CoverageAnalysis]: Checked inductivity of 4950 backedges. 0 proven. 4950 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:17:18,691 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [272618518] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:17:18,691 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 08:17:18,691 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [103, 103] total 105 [2021-11-07 08:17:18,691 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776759313] [2021-11-07 08:17:18,692 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 105 states [2021-11-07 08:17:18,692 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:17:18,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2021-11-07 08:17:18,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2808, Invalid=8112, Unknown=0, NotChecked=0, Total=10920 [2021-11-07 08:17:18,695 INFO L87 Difference]: Start difference. First operand 212 states and 215 transitions. Second operand has 105 states, 105 states have (on average 2.038095238095238) internal successors, (214), 105 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:17:20,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:17:20,700 INFO L93 Difference]: Finished difference Result 228 states and 234 transitions. [2021-11-07 08:17:20,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2021-11-07 08:17:20,701 INFO L78 Accepts]: Start accepts. Automaton has has 105 states, 105 states have (on average 2.038095238095238) internal successors, (214), 105 states have internal predecessors, (214), 0 states have call successors, (0), 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 209 [2021-11-07 08:17:20,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:17:20,703 INFO L225 Difference]: With dead ends: 228 [2021-11-07 08:17:20,703 INFO L226 Difference]: Without dead ends: 219 [2021-11-07 08:17:20,705 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 361 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4066 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=6735, Invalid=17135, Unknown=0, NotChecked=0, Total=23870 [2021-11-07 08:17:20,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2021-11-07 08:17:20,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 216. [2021-11-07 08:17:20,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 214 states have (on average 1.0233644859813085) internal successors, (219), 215 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:17:20,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 219 transitions. [2021-11-07 08:17:20,711 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 219 transitions. Word has length 209 [2021-11-07 08:17:20,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:17:20,712 INFO L470 AbstractCegarLoop]: Abstraction has 216 states and 219 transitions. [2021-11-07 08:17:20,712 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 105 states, 105 states have (on average 2.038095238095238) internal successors, (214), 105 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:17:20,712 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 219 transitions. [2021-11-07 08:17:20,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2021-11-07 08:17:20,713 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:17:20,714 INFO L513 BasicCegarLoop]: trace histogram [51, 51, 51, 51, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:17:20,746 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Forceful destruction successful, exit code 0 [2021-11-07 08:17:20,920 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable52 [2021-11-07 08:17:20,920 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-07 08:17:20,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:17:20,920 INFO L85 PathProgramCache]: Analyzing trace with hash -917370809, now seen corresponding path program 51 times [2021-11-07 08:17:20,921 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:17:20,921 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321071333] [2021-11-07 08:17:20,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:17:20,921 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:17:20,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:17:24,378 INFO L134 CoverageAnalysis]: Checked inductivity of 5151 backedges. 0 proven. 5151 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:17:24,378 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:17:24,378 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321071333] [2021-11-07 08:17:24,378 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321071333] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:17:24,378 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1611052800] [2021-11-07 08:17:24,379 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 08:17:24,379 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:17:24,379 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:17:24,380 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:17:24,380 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea01fba-48da-4804-b970-aeda504324ad/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process