./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/recursive/recHanoi01.c --full-output --architecture 32bit -------------------------------------------------------------------------------- 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_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/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_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursive/recHanoi01.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/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 32bit --witnessprinter.graph.data.programhash 85b02fad28964214b0cd332ac12fce3136c6c5e9247130ab67f1c2c3baea22f9 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 07:55:42,356 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 07:55:42,358 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 07:55:42,393 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 07:55:42,394 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 07:55:42,395 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 07:55:42,397 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 07:55:42,400 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 07:55:42,403 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 07:55:42,404 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 07:55:42,406 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 07:55:42,407 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 07:55:42,408 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 07:55:42,409 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 07:55:42,411 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 07:55:42,413 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 07:55:42,414 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 07:55:42,415 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 07:55:42,418 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 07:55:42,420 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 07:55:42,423 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 07:55:42,426 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 07:55:42,428 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 07:55:42,429 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 07:55:42,433 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 07:55:42,433 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 07:55:42,434 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 07:55:42,435 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 07:55:42,436 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 07:55:42,437 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 07:55:42,437 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 07:55:42,438 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 07:55:42,439 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 07:55:42,440 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 07:55:42,442 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 07:55:42,442 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 07:55:42,443 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 07:55:42,443 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 07:55:42,444 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 07:55:42,445 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 07:55:42,446 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 07:55:42,448 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/config/svcomp-Overflow-32bit-Automizer_Default.epf [2021-11-07 07:55:42,474 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 07:55:42,474 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 07:55:42,475 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 07:55:42,475 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 07:55:42,476 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 07:55:42,477 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 07:55:42,477 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 07:55:42,477 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 07:55:42,477 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 07:55:42,478 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-07 07:55:42,478 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 07:55:42,478 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 07:55:42,479 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 07:55:42,479 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 07:55:42,479 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 07:55:42,479 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 07:55:42,480 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-11-07 07:55:42,480 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 07:55:42,480 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 07:55:42,480 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 07:55:42,481 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 07:55:42,481 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 07:55:42,481 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 07:55:42,481 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 07:55:42,482 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 07:55:42,482 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 07:55:42,482 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 07:55:42,483 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 07:55:42,483 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 07:55:42,483 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 07:55:42,483 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 07:55:42,484 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 07:55:42,484 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_80015118-f043-42a4-b953-18ce12794fa1/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 85b02fad28964214b0cd332ac12fce3136c6c5e9247130ab67f1c2c3baea22f9 [2021-11-07 07:55:42,711 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 07:55:42,736 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 07:55:42,739 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 07:55:42,740 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 07:55:42,741 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 07:55:42,742 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/../../sv-benchmarks/c/recursive/recHanoi01.c [2021-11-07 07:55:42,813 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/data/fa19f20cb/9ae27791db494455ae3fb3f78bcd1000/FLAGa08f27ae4 [2021-11-07 07:55:43,203 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 07:55:43,204 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/sv-benchmarks/c/recursive/recHanoi01.c [2021-11-07 07:55:43,210 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/data/fa19f20cb/9ae27791db494455ae3fb3f78bcd1000/FLAGa08f27ae4 [2021-11-07 07:55:43,613 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/data/fa19f20cb/9ae27791db494455ae3fb3f78bcd1000 [2021-11-07 07:55:43,615 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 07:55:43,617 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 07:55:43,627 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 07:55:43,627 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 07:55:43,641 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 07:55:43,642 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 07:55:43" (1/1) ... [2021-11-07 07:55:43,644 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56abfccf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:55:43, skipping insertion in model container [2021-11-07 07:55:43,645 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 07:55:43" (1/1) ... [2021-11-07 07:55:43,651 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 07:55:43,664 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 07:55:43,830 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/sv-benchmarks/c/recursive/recHanoi01.c[1213,1226] [2021-11-07 07:55:43,831 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 07:55:43,840 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 07:55:43,854 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/sv-benchmarks/c/recursive/recHanoi01.c[1213,1226] [2021-11-07 07:55:43,855 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 07:55:43,868 INFO L208 MainTranslator]: Completed translation [2021-11-07 07:55:43,869 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:55:43 WrapperNode [2021-11-07 07:55:43,869 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 07:55:43,870 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 07:55:43,870 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 07:55:43,870 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 07:55:43,882 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:55:43" (1/1) ... [2021-11-07 07:55:43,889 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:55:43" (1/1) ... [2021-11-07 07:55:43,905 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 07:55:43,905 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 07:55:43,906 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 07:55:43,906 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 07:55:43,914 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:55:43" (1/1) ... [2021-11-07 07:55:43,915 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:55:43" (1/1) ... [2021-11-07 07:55:43,916 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:55:43" (1/1) ... [2021-11-07 07:55:43,916 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:55:43" (1/1) ... [2021-11-07 07:55:43,920 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:55:43" (1/1) ... [2021-11-07 07:55:43,922 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:55:43" (1/1) ... [2021-11-07 07:55:43,923 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:55:43" (1/1) ... [2021-11-07 07:55:43,925 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 07:55:43,926 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 07:55:43,926 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 07:55:43,926 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 07:55:43,927 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:55:43" (1/1) ... [2021-11-07 07:55:43,934 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 07:55:43,945 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:55:43,958 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 07:55:43,986 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 07:55:44,005 INFO L130 BoogieDeclarations]: Found specification of procedure applyHanoi [2021-11-07 07:55:44,006 INFO L138 BoogieDeclarations]: Found implementation of procedure applyHanoi [2021-11-07 07:55:44,006 INFO L130 BoogieDeclarations]: Found specification of procedure hanoi [2021-11-07 07:55:44,006 INFO L138 BoogieDeclarations]: Found implementation of procedure hanoi [2021-11-07 07:55:44,006 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 07:55:44,007 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 07:55:44,007 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 07:55:44,008 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 07:55:44,241 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 07:55:44,242 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-11-07 07:55:44,243 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 07:55:44 BoogieIcfgContainer [2021-11-07 07:55:44,244 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 07:55:44,245 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 07:55:44,246 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 07:55:44,249 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 07:55:44,249 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 07:55:43" (1/3) ... [2021-11-07 07:55:44,250 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b2d616d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 07:55:44, skipping insertion in model container [2021-11-07 07:55:44,251 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:55:43" (2/3) ... [2021-11-07 07:55:44,251 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b2d616d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 07:55:44, skipping insertion in model container [2021-11-07 07:55:44,251 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 07:55:44" (3/3) ... [2021-11-07 07:55:44,253 INFO L111 eAbstractionObserver]: Analyzing ICFG recHanoi01.c [2021-11-07 07:55:44,258 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 07:55:44,258 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2021-11-07 07:55:44,305 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 07:55:44,311 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 07:55:44,312 INFO L340 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2021-11-07 07:55:44,330 INFO L276 IsEmpty]: Start isEmpty. Operand has 47 states, 27 states have (on average 1.5925925925925926) internal successors, (43), 40 states have internal predecessors, (43), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-07 07:55:44,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-07 07:55:44,335 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:55:44,336 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:55:44,336 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting applyHanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [applyHanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2021-11-07 07:55:44,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:55:44,342 INFO L85 PathProgramCache]: Analyzing trace with hash -163922134, now seen corresponding path program 1 times [2021-11-07 07:55:44,351 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:55:44,352 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977805052] [2021-11-07 07:55:44,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:55:44,353 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:55:44,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:55:44,624 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 07:55:44,624 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:55:44,625 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977805052] [2021-11-07 07:55:44,625 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977805052] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:55:44,626 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:55:44,626 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 07:55:44,628 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753796169] [2021-11-07 07:55:44,632 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 07:55:44,633 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:55:44,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 07:55:44,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 07:55:44,648 INFO L87 Difference]: Start difference. First operand has 47 states, 27 states have (on average 1.5925925925925926) internal successors, (43), 40 states have internal predecessors, (43), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:55:44,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:55:44,709 INFO L93 Difference]: Finished difference Result 83 states and 91 transitions. [2021-11-07 07:55:44,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 07:55:44,711 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-11-07 07:55:44,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:55:44,719 INFO L225 Difference]: With dead ends: 83 [2021-11-07 07:55:44,719 INFO L226 Difference]: Without dead ends: 66 [2021-11-07 07:55:44,722 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 07:55:44,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2021-11-07 07:55:44,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 47. [2021-11-07 07:55:44,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 27 states have (on average 1.5555555555555556) internal successors, (42), 40 states have internal predecessors, (42), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-11-07 07:55:44,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 52 transitions. [2021-11-07 07:55:44,763 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 52 transitions. Word has length 7 [2021-11-07 07:55:44,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:55:44,763 INFO L470 AbstractCegarLoop]: Abstraction has 47 states and 52 transitions. [2021-11-07 07:55:44,764 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:55:44,764 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 52 transitions. [2021-11-07 07:55:44,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-07 07:55:44,765 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:55:44,765 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:55:44,765 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 07:55:44,765 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting applyHanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [applyHanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2021-11-07 07:55:44,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:55:44,767 INFO L85 PathProgramCache]: Analyzing trace with hash 1384620396, now seen corresponding path program 1 times [2021-11-07 07:55:44,767 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:55:44,767 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038318619] [2021-11-07 07:55:44,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:55:44,768 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:55:44,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:55:44,857 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 07:55:44,858 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:55:44,859 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038318619] [2021-11-07 07:55:44,859 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038318619] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:55:44,860 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:55:44,861 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 07:55:44,861 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767078260] [2021-11-07 07:55:44,863 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 07:55:44,864 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:55:44,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 07:55:44,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 07:55:44,868 INFO L87 Difference]: Start difference. First operand 47 states and 52 transitions. Second operand has 5 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:55:44,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:55:44,959 INFO L93 Difference]: Finished difference Result 47 states and 52 transitions. [2021-11-07 07:55:44,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 07:55:44,960 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 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 07:55:44,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:55:44,963 INFO L225 Difference]: With dead ends: 47 [2021-11-07 07:55:44,963 INFO L226 Difference]: Without dead ends: 45 [2021-11-07 07:55:44,964 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 07:55:44,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2021-11-07 07:55:44,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2021-11-07 07:55:44,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 27 states have (on average 1.4814814814814814) internal successors, (40), 38 states have internal predecessors, (40), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-11-07 07:55:44,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 50 transitions. [2021-11-07 07:55:44,974 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 50 transitions. Word has length 9 [2021-11-07 07:55:44,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:55:44,975 INFO L470 AbstractCegarLoop]: Abstraction has 45 states and 50 transitions. [2021-11-07 07:55:44,975 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:55:44,975 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 50 transitions. [2021-11-07 07:55:44,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-07 07:55:44,976 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:55:44,976 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:55:44,976 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 07:55:44,977 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting applyHanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [applyHanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2021-11-07 07:55:44,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:55:44,978 INFO L85 PathProgramCache]: Analyzing trace with hash -26440642, now seen corresponding path program 1 times [2021-11-07 07:55:44,978 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:55:44,979 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051110542] [2021-11-07 07:55:44,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:55:44,979 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:55:44,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:55:45,033 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 07:55:45,033 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:55:45,034 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051110542] [2021-11-07 07:55:45,034 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051110542] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:55:45,034 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:55:45,034 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 07:55:45,035 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450068199] [2021-11-07 07:55:45,035 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 07:55:45,036 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:55:45,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 07:55:45,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 07:55:45,037 INFO L87 Difference]: Start difference. First operand 45 states and 50 transitions. Second operand has 5 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:55:45,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:55:45,094 INFO L93 Difference]: Finished difference Result 74 states and 81 transitions. [2021-11-07 07:55:45,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 07:55:45,095 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 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 07:55:45,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:55:45,096 INFO L225 Difference]: With dead ends: 74 [2021-11-07 07:55:45,096 INFO L226 Difference]: Without dead ends: 51 [2021-11-07 07:55:45,097 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 07:55:45,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-11-07 07:55:45,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2021-11-07 07:55:45,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 31 states have (on average 1.3870967741935485) internal successors, (43), 42 states have internal predecessors, (43), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-07 07:55:45,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 56 transitions. [2021-11-07 07:55:45,108 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 56 transitions. Word has length 10 [2021-11-07 07:55:45,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:55:45,108 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 56 transitions. [2021-11-07 07:55:45,109 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:55:45,109 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 56 transitions. [2021-11-07 07:55:45,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-07 07:55:45,110 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:55:45,110 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:55:45,110 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-07 07:55:45,111 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting applyHanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [applyHanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2021-11-07 07:55:45,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:55:45,112 INFO L85 PathProgramCache]: Analyzing trace with hash -1596321821, now seen corresponding path program 1 times [2021-11-07 07:55:45,112 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:55:45,112 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897308435] [2021-11-07 07:55:45,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:55:45,113 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:55:45,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:55:45,209 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:55:45,210 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:55:45,210 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897308435] [2021-11-07 07:55:45,210 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897308435] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:55:45,211 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1412404675] [2021-11-07 07:55:45,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:55:45,211 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:55:45,211 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:55:45,213 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:55:45,233 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-07 07:55:45,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:55:45,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-07 07:55:45,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:55:45,451 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:55:45,452 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1412404675] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:55:45,452 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:55:45,452 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2021-11-07 07:55:45,452 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061268760] [2021-11-07 07:55:45,453 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 07:55:45,453 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:55:45,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 07:55:45,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-11-07 07:55:45,455 INFO L87 Difference]: Start difference. First operand 51 states and 56 transitions. Second operand has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 8 states have internal predecessors, (17), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:55:45,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:55:45,564 INFO L93 Difference]: Finished difference Result 83 states and 92 transitions. [2021-11-07 07:55:45,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 07:55:45,570 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 8 states have internal predecessors, (17), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-11-07 07:55:45,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:55:45,572 INFO L225 Difference]: With dead ends: 83 [2021-11-07 07:55:45,572 INFO L226 Difference]: Without dead ends: 82 [2021-11-07 07:55:45,573 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-11-07 07:55:45,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2021-11-07 07:55:45,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 59. [2021-11-07 07:55:45,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 37 states have (on average 1.3513513513513513) internal successors, (50), 48 states have internal predecessors, (50), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2021-11-07 07:55:45,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 67 transitions. [2021-11-07 07:55:45,596 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 67 transitions. Word has length 14 [2021-11-07 07:55:45,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:55:45,597 INFO L470 AbstractCegarLoop]: Abstraction has 59 states and 67 transitions. [2021-11-07 07:55:45,598 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 8 states have internal predecessors, (17), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:55:45,598 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 67 transitions. [2021-11-07 07:55:45,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-07 07:55:45,599 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:55:45,599 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:55:45,637 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-07 07:55:45,826 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:55:45,827 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting applyHanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [applyHanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2021-11-07 07:55:45,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:55:45,827 INFO L85 PathProgramCache]: Analyzing trace with hash 2053631139, now seen corresponding path program 1 times [2021-11-07 07:55:45,827 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:55:45,827 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039835069] [2021-11-07 07:55:45,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:55:45,828 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:55:45,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:55:45,934 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 07:55:45,935 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:55:45,935 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039835069] [2021-11-07 07:55:45,935 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039835069] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:55:45,936 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [172880883] [2021-11-07 07:55:45,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:55:45,936 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:55:45,937 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:55:45,938 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:55:45,941 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-07 07:55:45,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:55:45,992 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-07 07:55:45,994 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:55:46,103 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 07:55:46,104 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [172880883] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:55:46,104 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-07 07:55:46,104 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2021-11-07 07:55:46,105 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795389364] [2021-11-07 07:55:46,105 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 07:55:46,106 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:55:46,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 07:55:46,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-07 07:55:46,108 INFO L87 Difference]: Start difference. First operand 59 states and 67 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:55:46,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:55:46,170 INFO L93 Difference]: Finished difference Result 59 states and 67 transitions. [2021-11-07 07:55:46,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 07:55:46,171 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-11-07 07:55:46,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:55:46,174 INFO L225 Difference]: With dead ends: 59 [2021-11-07 07:55:46,175 INFO L226 Difference]: Without dead ends: 58 [2021-11-07 07:55:46,176 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 15 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 07:55:46,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-11-07 07:55:46,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2021-11-07 07:55:46,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 37 states have (on average 1.3243243243243243) internal successors, (49), 47 states have internal predecessors, (49), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2021-11-07 07:55:46,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 66 transitions. [2021-11-07 07:55:46,204 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 66 transitions. Word has length 15 [2021-11-07 07:55:46,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:55:46,205 INFO L470 AbstractCegarLoop]: Abstraction has 58 states and 66 transitions. [2021-11-07 07:55:46,206 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:55:46,206 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 66 transitions. [2021-11-07 07:55:46,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-07 07:55:46,208 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:55:46,210 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:55:46,248 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-07 07:55:46,426 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:55:46,427 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting applyHanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [applyHanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2021-11-07 07:55:46,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:55:46,427 INFO L85 PathProgramCache]: Analyzing trace with hash -2145430299, now seen corresponding path program 1 times [2021-11-07 07:55:46,427 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:55:46,428 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639158209] [2021-11-07 07:55:46,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:55:46,428 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:55:46,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:55:46,528 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 07:55:46,528 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:55:46,529 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639158209] [2021-11-07 07:55:46,529 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639158209] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:55:46,529 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1681103902] [2021-11-07 07:55:46,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:55:46,530 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:55:46,530 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:55:46,531 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:55:46,533 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-07 07:55:46,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:55:46,588 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 07:55:46,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:55:46,662 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 07:55:46,662 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1681103902] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:55:46,663 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:55:46,663 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2021-11-07 07:55:46,663 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70920350] [2021-11-07 07:55:46,664 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 07:55:46,664 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:55:46,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 07:55:46,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-07 07:55:46,665 INFO L87 Difference]: Start difference. First operand 58 states and 66 transitions. Second operand has 7 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:55:46,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:55:46,756 INFO L93 Difference]: Finished difference Result 60 states and 70 transitions. [2021-11-07 07:55:46,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 07:55:46,757 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 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 07:55:46,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:55:46,759 INFO L225 Difference]: With dead ends: 60 [2021-11-07 07:55:46,759 INFO L226 Difference]: Without dead ends: 58 [2021-11-07 07:55:46,760 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-11-07 07:55:46,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-11-07 07:55:46,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2021-11-07 07:55:46,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 38 states have (on average 1.263157894736842) internal successors, (48), 46 states have internal predecessors, (48), 8 states have call successors, (8), 4 states have call predecessors, (8), 5 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) [2021-11-07 07:55:46,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 68 transitions. [2021-11-07 07:55:46,769 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 68 transitions. Word has length 17 [2021-11-07 07:55:46,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:55:46,769 INFO L470 AbstractCegarLoop]: Abstraction has 58 states and 68 transitions. [2021-11-07 07:55:46,770 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:55:46,770 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 68 transitions. [2021-11-07 07:55:46,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-07 07:55:46,771 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:55:46,771 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2021-11-07 07:55:46,795 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-07 07:55:46,973 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-11-07 07:55:46,973 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting applyHanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [applyHanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2021-11-07 07:55:46,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:55:46,973 INFO L85 PathProgramCache]: Analyzing trace with hash 85601546, now seen corresponding path program 2 times [2021-11-07 07:55:46,974 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:55:46,974 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207580117] [2021-11-07 07:55:46,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:55:46,974 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:55:46,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:55:47,066 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:55:47,067 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:55:47,067 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207580117] [2021-11-07 07:55:47,067 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207580117] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:55:47,067 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1184174676] [2021-11-07 07:55:47,067 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 07:55:47,068 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:55:47,068 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:55:47,079 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:55:47,103 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-07 07:55:47,164 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 07:55:47,164 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:55:47,165 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-07 07:55:47,167 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:55:47,273 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:55:47,274 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1184174676] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:55:47,274 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:55:47,274 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2021-11-07 07:55:47,275 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699596571] [2021-11-07 07:55:47,275 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-07 07:55:47,275 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:55:47,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-07 07:55:47,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-11-07 07:55:47,276 INFO L87 Difference]: Start difference. First operand 58 states and 68 transitions. Second operand has 10 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 10 states have internal predecessors, (23), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:55:47,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:55:47,385 INFO L93 Difference]: Finished difference Result 119 states and 138 transitions. [2021-11-07 07:55:47,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 07:55:47,386 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 10 states have internal predecessors, (23), 4 states have call successors, (4), 4 states have call predecessors, (4), 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 07:55:47,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:55:47,388 INFO L225 Difference]: With dead ends: 119 [2021-11-07 07:55:47,388 INFO L226 Difference]: Without dead ends: 118 [2021-11-07 07:55:47,389 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2021-11-07 07:55:47,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2021-11-07 07:55:47,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 75. [2021-11-07 07:55:47,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 50 states have (on average 1.22) internal successors, (61), 59 states have internal predecessors, (61), 11 states have call successors, (11), 5 states have call predecessors, (11), 7 states have return successors, (20), 10 states have call predecessors, (20), 10 states have call successors, (20) [2021-11-07 07:55:47,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 92 transitions. [2021-11-07 07:55:47,401 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 92 transitions. Word has length 21 [2021-11-07 07:55:47,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:55:47,402 INFO L470 AbstractCegarLoop]: Abstraction has 75 states and 92 transitions. [2021-11-07 07:55:47,402 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 10 states have internal predecessors, (23), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:55:47,402 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 92 transitions. [2021-11-07 07:55:47,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-07 07:55:47,403 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:55:47,404 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:55:47,441 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-07 07:55:47,626 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:55:47,626 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [applyHanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2021-11-07 07:55:47,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:55:47,627 INFO L85 PathProgramCache]: Analyzing trace with hash 1365612226, now seen corresponding path program 1 times [2021-11-07 07:55:47,627 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:55:47,627 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091658310] [2021-11-07 07:55:47,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:55:47,628 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:55:47,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:55:47,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-07 07:55:47,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:55:47,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-07 07:55:47,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:55:47,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-07 07:55:47,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:55:47,827 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 07:55:47,828 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:55:47,828 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091658310] [2021-11-07 07:55:47,831 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091658310] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:55:47,831 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1670048353] [2021-11-07 07:55:47,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:55:47,832 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:55:47,832 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:55:47,836 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:55:47,853 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-07 07:55:47,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:55:47,911 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 07:55:47,913 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:55:48,026 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-07 07:55:48,027 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1670048353] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:55:48,027 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-07 07:55:48,027 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 12 [2021-11-07 07:55:48,028 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382757846] [2021-11-07 07:55:48,028 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 07:55:48,028 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:55:48,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 07:55:48,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2021-11-07 07:55:48,029 INFO L87 Difference]: Start difference. First operand 75 states and 92 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-07 07:55:48,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:55:48,061 INFO L93 Difference]: Finished difference Result 75 states and 92 transitions. [2021-11-07 07:55:48,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 07:55:48,061 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 28 [2021-11-07 07:55:48,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:55:48,065 INFO L225 Difference]: With dead ends: 75 [2021-11-07 07:55:48,065 INFO L226 Difference]: Without dead ends: 74 [2021-11-07 07:55:48,068 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-11-07 07:55:48,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-11-07 07:55:48,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2021-11-07 07:55:48,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 50 states have (on average 1.2) internal successors, (60), 58 states have internal predecessors, (60), 11 states have call successors, (11), 5 states have call predecessors, (11), 7 states have return successors, (20), 10 states have call predecessors, (20), 10 states have call successors, (20) [2021-11-07 07:55:48,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 91 transitions. [2021-11-07 07:55:48,085 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 91 transitions. Word has length 28 [2021-11-07 07:55:48,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:55:48,087 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 91 transitions. [2021-11-07 07:55:48,087 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-07 07:55:48,088 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 91 transitions. [2021-11-07 07:55:48,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-07 07:55:48,096 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:55:48,096 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1] [2021-11-07 07:55:48,131 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-07 07:55:48,315 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-11-07 07:55:48,315 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting applyHanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [applyHanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2021-11-07 07:55:48,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:55:48,316 INFO L85 PathProgramCache]: Analyzing trace with hash -1371716093, now seen corresponding path program 3 times [2021-11-07 07:55:48,316 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:55:48,316 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354312375] [2021-11-07 07:55:48,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:55:48,316 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:55:48,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:55:48,421 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:55:48,422 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:55:48,422 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354312375] [2021-11-07 07:55:48,422 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354312375] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:55:48,422 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2038715798] [2021-11-07 07:55:48,423 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 07:55:48,423 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:55:48,423 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:55:48,439 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:55:48,458 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-07 07:55:48,532 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-11-07 07:55:48,533 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:55:48,534 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-07 07:55:48,536 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:55:48,657 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:55:48,657 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2038715798] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:55:48,657 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:55:48,658 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2021-11-07 07:55:48,658 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710297882] [2021-11-07 07:55:48,658 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-07 07:55:48,659 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:55:48,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-07 07:55:48,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2021-11-07 07:55:48,660 INFO L87 Difference]: Start difference. First operand 74 states and 91 transitions. Second operand has 12 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 12 states have internal predecessors, (29), 5 states have call successors, (5), 5 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:55:48,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:55:48,787 INFO L93 Difference]: Finished difference Result 153 states and 183 transitions. [2021-11-07 07:55:48,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-07 07:55:48,787 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 12 states have internal predecessors, (29), 5 states have call successors, (5), 5 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-11-07 07:55:48,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:55:48,793 INFO L225 Difference]: With dead ends: 153 [2021-11-07 07:55:48,793 INFO L226 Difference]: Without dead ends: 152 [2021-11-07 07:55:48,794 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2021-11-07 07:55:48,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2021-11-07 07:55:48,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 91. [2021-11-07 07:55:48,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 62 states have (on average 1.1774193548387097) internal successors, (73), 71 states have internal predecessors, (73), 14 states have call successors, (14), 6 states have call predecessors, (14), 9 states have return successors, (31), 13 states have call predecessors, (31), 13 states have call successors, (31) [2021-11-07 07:55:48,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 118 transitions. [2021-11-07 07:55:48,824 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 118 transitions. Word has length 28 [2021-11-07 07:55:48,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:55:48,824 INFO L470 AbstractCegarLoop]: Abstraction has 91 states and 118 transitions. [2021-11-07 07:55:48,824 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 12 states have internal predecessors, (29), 5 states have call successors, (5), 5 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:55:48,834 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 118 transitions. [2021-11-07 07:55:48,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-07 07:55:48,835 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:55:48,835 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:55:48,875 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-07 07:55:49,052 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-11-07 07:55:49,053 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [applyHanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2021-11-07 07:55:49,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:55:49,053 INFO L85 PathProgramCache]: Analyzing trace with hash -615693896, now seen corresponding path program 1 times [2021-11-07 07:55:49,054 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:55:49,054 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811766847] [2021-11-07 07:55:49,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:55:49,054 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:55:49,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:55:49,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-07 07:55:49,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:55:49,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-07 07:55:49,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:55:49,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-07 07:55:49,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:55:49,126 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-07 07:55:49,127 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:55:49,127 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811766847] [2021-11-07 07:55:49,127 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811766847] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:55:49,127 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:55:49,127 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 07:55:49,127 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851214701] [2021-11-07 07:55:49,128 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 07:55:49,128 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:55:49,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 07:55:49,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-07 07:55:49,129 INFO L87 Difference]: Start difference. First operand 91 states and 118 transitions. Second operand has 6 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-07 07:55:49,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:55:49,223 INFO L93 Difference]: Finished difference Result 110 states and 139 transitions. [2021-11-07 07:55:49,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 07:55:49,224 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 29 [2021-11-07 07:55:49,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:55:49,228 INFO L225 Difference]: With dead ends: 110 [2021-11-07 07:55:49,228 INFO L226 Difference]: Without dead ends: 107 [2021-11-07 07:55:49,231 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-07 07:55:49,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2021-11-07 07:55:49,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 101. [2021-11-07 07:55:49,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 71 states have (on average 1.1971830985915493) internal successors, (85), 79 states have internal predecessors, (85), 15 states have call successors, (15), 7 states have call predecessors, (15), 9 states have return successors, (32), 14 states have call predecessors, (32), 14 states have call successors, (32) [2021-11-07 07:55:49,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 132 transitions. [2021-11-07 07:55:49,250 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 132 transitions. Word has length 29 [2021-11-07 07:55:49,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:55:49,250 INFO L470 AbstractCegarLoop]: Abstraction has 101 states and 132 transitions. [2021-11-07 07:55:49,251 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-07 07:55:49,251 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 132 transitions. [2021-11-07 07:55:49,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-07 07:55:49,255 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:55:49,255 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:55:49,255 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-07 07:55:49,256 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [applyHanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2021-11-07 07:55:49,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:55:49,256 INFO L85 PathProgramCache]: Analyzing trace with hash 1461802605, now seen corresponding path program 1 times [2021-11-07 07:55:49,256 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:55:49,257 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293625906] [2021-11-07 07:55:49,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:55:49,257 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:55:49,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:55:49,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-07 07:55:49,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:55:49,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-07 07:55:49,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:55:49,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-07 07:55:49,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:55:49,346 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-07 07:55:49,347 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:55:49,347 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293625906] [2021-11-07 07:55:49,347 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293625906] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:55:49,347 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1656202081] [2021-11-07 07:55:49,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:55:49,348 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:55:49,348 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:55:49,351 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:55:49,377 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-07 07:55:49,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:55:49,452 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 07:55:49,454 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:55:49,550 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-07 07:55:49,550 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1656202081] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:55:49,550 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:55:49,550 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 7 [2021-11-07 07:55:49,551 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435831208] [2021-11-07 07:55:49,552 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 07:55:49,552 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:55:49,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 07:55:49,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-07 07:55:49,553 INFO L87 Difference]: Start difference. First operand 101 states and 132 transitions. Second operand has 8 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 5 states have internal predecessors, (22), 3 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-07 07:55:49,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:55:49,717 INFO L93 Difference]: Finished difference Result 126 states and 155 transitions. [2021-11-07 07:55:49,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-07 07:55:49,718 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 5 states have internal predecessors, (22), 3 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 34 [2021-11-07 07:55:49,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:55:49,720 INFO L225 Difference]: With dead ends: 126 [2021-11-07 07:55:49,720 INFO L226 Difference]: Without dead ends: 125 [2021-11-07 07:55:49,721 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2021-11-07 07:55:49,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2021-11-07 07:55:49,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 113. [2021-11-07 07:55:49,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 81 states have (on average 1.2345679012345678) internal successors, (100), 89 states have internal predecessors, (100), 16 states have call successors, (16), 8 states have call predecessors, (16), 10 states have return successors, (33), 15 states have call predecessors, (33), 15 states have call successors, (33) [2021-11-07 07:55:49,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 149 transitions. [2021-11-07 07:55:49,733 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 149 transitions. Word has length 34 [2021-11-07 07:55:49,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:55:49,733 INFO L470 AbstractCegarLoop]: Abstraction has 113 states and 149 transitions. [2021-11-07 07:55:49,734 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 5 states have internal predecessors, (22), 3 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-07 07:55:49,734 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 149 transitions. [2021-11-07 07:55:49,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-07 07:55:49,735 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:55:49,735 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1] [2021-11-07 07:55:49,772 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-07 07:55:49,957 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:55:49,958 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting applyHanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [applyHanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2021-11-07 07:55:49,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:55:49,958 INFO L85 PathProgramCache]: Analyzing trace with hash 770953962, now seen corresponding path program 4 times [2021-11-07 07:55:49,958 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:55:49,959 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623938182] [2021-11-07 07:55:49,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:55:49,959 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:55:49,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:55:50,063 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:55:50,063 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:55:50,063 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623938182] [2021-11-07 07:55:50,063 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623938182] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:55:50,064 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [341571467] [2021-11-07 07:55:50,064 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-07 07:55:50,064 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:55:50,064 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:55:50,070 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:55:50,089 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-07 07:55:50,181 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-07 07:55:50,182 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:55:50,183 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-07 07:55:50,185 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:55:50,336 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:55:50,336 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [341571467] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:55:50,336 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:55:50,337 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 13 [2021-11-07 07:55:50,337 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500756412] [2021-11-07 07:55:50,341 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-07 07:55:50,341 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:55:50,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-07 07:55:50,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2021-11-07 07:55:50,342 INFO L87 Difference]: Start difference. First operand 113 states and 149 transitions. Second operand has 14 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 14 states have internal predecessors, (35), 6 states have call successors, (6), 6 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:55:50,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:55:50,532 INFO L93 Difference]: Finished difference Result 300 states and 389 transitions. [2021-11-07 07:55:50,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-07 07:55:50,533 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 14 states have internal predecessors, (35), 6 states have call successors, (6), 6 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-11-07 07:55:50,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:55:50,539 INFO L225 Difference]: With dead ends: 300 [2021-11-07 07:55:50,540 INFO L226 Difference]: Without dead ends: 299 [2021-11-07 07:55:50,541 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=107, Invalid=235, Unknown=0, NotChecked=0, Total=342 [2021-11-07 07:55:50,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2021-11-07 07:55:50,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 130. [2021-11-07 07:55:50,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 93 states have (on average 1.2150537634408602) internal successors, (113), 102 states have internal predecessors, (113), 19 states have call successors, (19), 9 states have call predecessors, (19), 12 states have return successors, (47), 18 states have call predecessors, (47), 18 states have call successors, (47) [2021-11-07 07:55:50,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 179 transitions. [2021-11-07 07:55:50,562 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 179 transitions. Word has length 35 [2021-11-07 07:55:50,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:55:50,562 INFO L470 AbstractCegarLoop]: Abstraction has 130 states and 179 transitions. [2021-11-07 07:55:50,562 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 14 states have internal predecessors, (35), 6 states have call successors, (6), 6 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:55:50,562 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 179 transitions. [2021-11-07 07:55:50,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-07 07:55:50,566 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:55:50,566 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:55:50,610 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-07 07:55:50,792 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:55:50,793 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [applyHanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2021-11-07 07:55:50,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:55:50,793 INFO L85 PathProgramCache]: Analyzing trace with hash 337499815, now seen corresponding path program 1 times [2021-11-07 07:55:50,793 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:55:50,794 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725198222] [2021-11-07 07:55:50,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:55:50,794 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:55:50,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:55:50,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-07 07:55:50,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:55:50,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-07 07:55:50,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:55:50,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-07 07:55:50,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:55:50,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-11-07 07:55:50,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:55:50,842 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-07 07:55:50,842 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:55:50,842 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725198222] [2021-11-07 07:55:50,842 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725198222] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:55:50,842 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:55:50,842 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 07:55:50,843 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974121237] [2021-11-07 07:55:50,843 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 07:55:50,843 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:55:50,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 07:55:50,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 07:55:50,844 INFO L87 Difference]: Start difference. First operand 130 states and 179 transitions. Second operand has 5 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-07 07:55:50,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:55:50,902 INFO L93 Difference]: Finished difference Result 153 states and 210 transitions. [2021-11-07 07:55:50,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 07:55:50,903 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 36 [2021-11-07 07:55:50,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:55:50,904 INFO L225 Difference]: With dead ends: 153 [2021-11-07 07:55:50,904 INFO L226 Difference]: Without dead ends: 142 [2021-11-07 07:55:50,905 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-07 07:55:50,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2021-11-07 07:55:50,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 142. [2021-11-07 07:55:50,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 104 states have (on average 1.1826923076923077) internal successors, (123), 112 states have internal predecessors, (123), 19 states have call successors, (19), 9 states have call predecessors, (19), 13 states have return successors, (49), 20 states have call predecessors, (49), 18 states have call successors, (49) [2021-11-07 07:55:50,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 191 transitions. [2021-11-07 07:55:50,918 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 191 transitions. Word has length 36 [2021-11-07 07:55:50,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:55:50,919 INFO L470 AbstractCegarLoop]: Abstraction has 142 states and 191 transitions. [2021-11-07 07:55:50,919 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-07 07:55:50,919 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 191 transitions. [2021-11-07 07:55:50,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-07 07:55:50,920 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:55:50,920 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:55:50,920 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-07 07:55:50,921 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [applyHanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2021-11-07 07:55:50,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:55:50,921 INFO L85 PathProgramCache]: Analyzing trace with hash 1972824792, now seen corresponding path program 2 times [2021-11-07 07:55:50,921 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:55:50,921 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976044962] [2021-11-07 07:55:50,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:55:50,922 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:55:50,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:55:50,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-07 07:55:50,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:55:50,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-07 07:55:50,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:55:50,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-07 07:55:50,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:55:51,001 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-07 07:55:51,001 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:55:51,002 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976044962] [2021-11-07 07:55:51,002 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976044962] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:55:51,002 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [797979968] [2021-11-07 07:55:51,002 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 07:55:51,002 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:55:51,002 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:55:51,003 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:55:51,028 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-07 07:55:51,125 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 07:55:51,125 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:55:51,126 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-07 07:55:51,129 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:55:51,227 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-07 07:55:51,227 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [797979968] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:55:51,228 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:55:51,228 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 9 [2021-11-07 07:55:51,228 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77006511] [2021-11-07 07:55:51,228 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-07 07:55:51,228 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:55:51,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-07 07:55:51,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-11-07 07:55:51,229 INFO L87 Difference]: Start difference. First operand 142 states and 191 transitions. Second operand has 10 states, 8 states have (on average 3.25) internal successors, (26), 6 states have internal predecessors, (26), 4 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-07 07:55:51,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:55:51,427 INFO L93 Difference]: Finished difference Result 174 states and 216 transitions. [2021-11-07 07:55:51,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-07 07:55:51,428 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 3.25) internal successors, (26), 6 states have internal predecessors, (26), 4 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 39 [2021-11-07 07:55:51,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:55:51,431 INFO L225 Difference]: With dead ends: 174 [2021-11-07 07:55:51,431 INFO L226 Difference]: Without dead ends: 173 [2021-11-07 07:55:51,432 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2021-11-07 07:55:51,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2021-11-07 07:55:51,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 161. [2021-11-07 07:55:51,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 120 states have (on average 1.2) internal successors, (144), 128 states have internal predecessors, (144), 20 states have call successors, (20), 10 states have call predecessors, (20), 15 states have return successors, (51), 22 states have call predecessors, (51), 19 states have call successors, (51) [2021-11-07 07:55:51,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 215 transitions. [2021-11-07 07:55:51,454 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 215 transitions. Word has length 39 [2021-11-07 07:55:51,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:55:51,455 INFO L470 AbstractCegarLoop]: Abstraction has 161 states and 215 transitions. [2021-11-07 07:55:51,456 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 3.25) internal successors, (26), 6 states have internal predecessors, (26), 4 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-07 07:55:51,456 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 215 transitions. [2021-11-07 07:55:51,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-07 07:55:51,457 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:55:51,458 INFO L513 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1] [2021-11-07 07:55:51,498 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-07 07:55:51,686 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:55:51,686 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting applyHanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [applyHanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2021-11-07 07:55:51,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:55:51,687 INFO L85 PathProgramCache]: Analyzing trace with hash -1774762973, now seen corresponding path program 5 times [2021-11-07 07:55:51,687 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:55:51,687 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318478647] [2021-11-07 07:55:51,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:55:51,687 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:55:51,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:55:51,820 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 85 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:55:51,820 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:55:51,820 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318478647] [2021-11-07 07:55:51,820 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318478647] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:55:51,820 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [497081147] [2021-11-07 07:55:51,821 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-07 07:55:51,821 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:55:51,821 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:55:51,822 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:55:51,845 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-07 07:55:51,965 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-11-07 07:55:51,965 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:55:51,967 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-07 07:55:51,970 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:55:52,137 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 85 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:55:52,138 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [497081147] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:55:52,138 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:55:52,138 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 15 [2021-11-07 07:55:52,141 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763376595] [2021-11-07 07:55:52,142 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-07 07:55:52,142 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:55:52,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-07 07:55:52,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2021-11-07 07:55:52,143 INFO L87 Difference]: Start difference. First operand 161 states and 215 transitions. Second operand has 16 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 16 states have internal predecessors, (41), 7 states have call successors, (7), 7 states have call predecessors, (7), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:55:52,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:55:52,345 INFO L93 Difference]: Finished difference Result 545 states and 690 transitions. [2021-11-07 07:55:52,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-07 07:55:52,346 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 16 states have internal predecessors, (41), 7 states have call successors, (7), 7 states have call predecessors, (7), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2021-11-07 07:55:52,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:55:52,353 INFO L225 Difference]: With dead ends: 545 [2021-11-07 07:55:52,353 INFO L226 Difference]: Without dead ends: 544 [2021-11-07 07:55:52,356 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=142, Invalid=320, Unknown=0, NotChecked=0, Total=462 [2021-11-07 07:55:52,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 544 states. [2021-11-07 07:55:52,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 544 to 178. [2021-11-07 07:55:52,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 132 states have (on average 1.1893939393939394) internal successors, (157), 141 states have internal predecessors, (157), 23 states have call successors, (23), 11 states have call predecessors, (23), 17 states have return successors, (68), 25 states have call predecessors, (68), 22 states have call successors, (68) [2021-11-07 07:55:52,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 248 transitions. [2021-11-07 07:55:52,383 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 248 transitions. Word has length 42 [2021-11-07 07:55:52,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:55:52,383 INFO L470 AbstractCegarLoop]: Abstraction has 178 states and 248 transitions. [2021-11-07 07:55:52,383 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 16 states have internal predecessors, (41), 7 states have call successors, (7), 7 states have call predecessors, (7), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:55:52,383 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 248 transitions. [2021-11-07 07:55:52,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-07 07:55:52,384 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:55:52,385 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:55:52,426 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-07 07:55:52,610 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-11-07 07:55:52,610 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [applyHanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2021-11-07 07:55:52,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:55:52,611 INFO L85 PathProgramCache]: Analyzing trace with hash 1544839501, now seen corresponding path program 3 times [2021-11-07 07:55:52,611 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:55:52,611 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310567855] [2021-11-07 07:55:52,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:55:52,611 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:55:52,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:55:52,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-07 07:55:52,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:55:52,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-07 07:55:52,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:55:52,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-07 07:55:52,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:55:52,759 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 2 proven. 33 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 07:55:52,759 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:55:52,759 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310567855] [2021-11-07 07:55:52,759 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310567855] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:55:52,760 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [137873642] [2021-11-07 07:55:52,760 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 07:55:52,760 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:55:52,760 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:55:52,766 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:55:52,778 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-07 07:55:52,927 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-11-07 07:55:52,927 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:55:52,928 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-07 07:55:52,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:55:53,080 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-11-07 07:55:53,081 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [137873642] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:55:53,081 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:55:53,081 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 8] total 20 [2021-11-07 07:55:53,081 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785191483] [2021-11-07 07:55:53,083 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-07 07:55:53,083 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:55:53,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-07 07:55:53,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=319, Unknown=0, NotChecked=0, Total=380 [2021-11-07 07:55:53,084 INFO L87 Difference]: Start difference. First operand 178 states and 248 transitions. Second operand has 20 states, 18 states have (on average 2.5) internal successors, (45), 12 states have internal predecessors, (45), 9 states have call successors, (12), 8 states have call predecessors, (12), 4 states have return successors, (6), 6 states have call predecessors, (6), 3 states have call successors, (6) [2021-11-07 07:55:53,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:55:53,638 INFO L93 Difference]: Finished difference Result 405 states and 576 transitions. [2021-11-07 07:55:53,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-07 07:55:53,638 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 18 states have (on average 2.5) internal successors, (45), 12 states have internal predecessors, (45), 9 states have call successors, (12), 8 states have call predecessors, (12), 4 states have return successors, (6), 6 states have call predecessors, (6), 3 states have call successors, (6) Word has length 44 [2021-11-07 07:55:53,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:55:53,641 INFO L225 Difference]: With dead ends: 405 [2021-11-07 07:55:53,641 INFO L226 Difference]: Without dead ends: 236 [2021-11-07 07:55:53,644 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 337 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=243, Invalid=1239, Unknown=0, NotChecked=0, Total=1482 [2021-11-07 07:55:53,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2021-11-07 07:55:53,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 218. [2021-11-07 07:55:53,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 165 states have (on average 1.1757575757575758) internal successors, (194), 168 states have internal predecessors, (194), 27 states have call successors, (27), 17 states have call predecessors, (27), 20 states have return successors, (62), 32 states have call predecessors, (62), 26 states have call successors, (62) [2021-11-07 07:55:53,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 283 transitions. [2021-11-07 07:55:53,663 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 283 transitions. Word has length 44 [2021-11-07 07:55:53,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:55:53,664 INFO L470 AbstractCegarLoop]: Abstraction has 218 states and 283 transitions. [2021-11-07 07:55:53,664 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 18 states have (on average 2.5) internal successors, (45), 12 states have internal predecessors, (45), 9 states have call successors, (12), 8 states have call predecessors, (12), 4 states have return successors, (6), 6 states have call predecessors, (6), 3 states have call successors, (6) [2021-11-07 07:55:53,664 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 283 transitions. [2021-11-07 07:55:53,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-07 07:55:53,665 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:55:53,665 INFO L513 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1] [2021-11-07 07:55:53,702 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-07 07:55:53,878 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-11-07 07:55:53,878 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting applyHanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [applyHanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2021-11-07 07:55:53,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:55:53,879 INFO L85 PathProgramCache]: Analyzing trace with hash 1921364170, now seen corresponding path program 6 times [2021-11-07 07:55:53,879 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:55:53,879 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19288061] [2021-11-07 07:55:53,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:55:53,879 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:55:53,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:55:54,046 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 123 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:55:54,046 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:55:54,046 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19288061] [2021-11-07 07:55:54,046 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19288061] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:55:54,047 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [112500452] [2021-11-07 07:55:54,047 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-07 07:55:54,047 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:55:54,047 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:55:54,048 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:55:54,053 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-07 07:55:54,242 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-11-07 07:55:54,243 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:55:54,244 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 29 conjunts are in the unsatisfiable core [2021-11-07 07:55:54,247 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:55:54,453 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 123 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:55:54,454 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [112500452] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:55:54,454 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:55:54,454 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 17 [2021-11-07 07:55:54,454 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447161979] [2021-11-07 07:55:54,455 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-07 07:55:54,455 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:55:54,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-07 07:55:54,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2021-11-07 07:55:54,456 INFO L87 Difference]: Start difference. First operand 218 states and 283 transitions. Second operand has 18 states, 17 states have (on average 2.764705882352941) internal successors, (47), 18 states have internal predecessors, (47), 8 states have call successors, (8), 8 states have call predecessors, (8), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:55:54,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:55:54,712 INFO L93 Difference]: Finished difference Result 610 states and 772 transitions. [2021-11-07 07:55:54,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-07 07:55:54,713 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.764705882352941) internal successors, (47), 18 states have internal predecessors, (47), 8 states have call successors, (8), 8 states have call predecessors, (8), 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 07:55:54,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:55:54,717 INFO L225 Difference]: With dead ends: 610 [2021-11-07 07:55:54,718 INFO L226 Difference]: Without dead ends: 609 [2021-11-07 07:55:54,719 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=182, Invalid=418, Unknown=0, NotChecked=0, Total=600 [2021-11-07 07:55:54,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 609 states. [2021-11-07 07:55:54,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 609 to 240. [2021-11-07 07:55:54,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 181 states have (on average 1.1657458563535912) internal successors, (211), 184 states have internal predecessors, (211), 31 states have call successors, (31), 19 states have call predecessors, (31), 22 states have return successors, (80), 36 states have call predecessors, (80), 30 states have call successors, (80) [2021-11-07 07:55:54,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 322 transitions. [2021-11-07 07:55:54,748 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 322 transitions. Word has length 49 [2021-11-07 07:55:54,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:55:54,749 INFO L470 AbstractCegarLoop]: Abstraction has 240 states and 322 transitions. [2021-11-07 07:55:54,749 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.764705882352941) internal successors, (47), 18 states have internal predecessors, (47), 8 states have call successors, (8), 8 states have call predecessors, (8), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:55:54,749 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 322 transitions. [2021-11-07 07:55:54,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-07 07:55:54,750 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:55:54,750 INFO L513 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1] [2021-11-07 07:55:54,788 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-07 07:55:54,974 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-11-07 07:55:54,974 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting applyHanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [applyHanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2021-11-07 07:55:54,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:55:54,975 INFO L85 PathProgramCache]: Analyzing trace with hash -2058745277, now seen corresponding path program 7 times [2021-11-07 07:55:54,975 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:55:54,975 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503239489] [2021-11-07 07:55:54,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:55:54,975 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:55:54,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:55:55,159 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 168 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:55:55,159 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:55:55,159 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503239489] [2021-11-07 07:55:55,159 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503239489] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:55:55,159 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1394521558] [2021-11-07 07:55:55,159 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-07 07:55:55,160 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:55:55,160 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:55:55,162 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:55:55,183 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-07 07:55:55,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:55:55,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 33 conjunts are in the unsatisfiable core [2021-11-07 07:55:55,362 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:55:55,560 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 168 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:55:55,561 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1394521558] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:55:55,561 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:55:55,561 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 19 [2021-11-07 07:55:55,561 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818803972] [2021-11-07 07:55:55,562 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-07 07:55:55,562 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:55:55,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-07 07:55:55,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=271, Unknown=0, NotChecked=0, Total=380 [2021-11-07 07:55:55,564 INFO L87 Difference]: Start difference. First operand 240 states and 322 transitions. Second operand has 20 states, 19 states have (on average 2.789473684210526) internal successors, (53), 20 states have internal predecessors, (53), 9 states have call successors, (9), 9 states have call predecessors, (9), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:55:55,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:55:55,845 INFO L93 Difference]: Finished difference Result 724 states and 926 transitions. [2021-11-07 07:55:55,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-07 07:55:55,846 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.789473684210526) internal successors, (53), 20 states have internal predecessors, (53), 9 states have call successors, (9), 9 states have call predecessors, (9), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2021-11-07 07:55:55,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:55:55,852 INFO L225 Difference]: With dead ends: 724 [2021-11-07 07:55:55,852 INFO L226 Difference]: Without dead ends: 723 [2021-11-07 07:55:55,853 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=227, Invalid=529, Unknown=0, NotChecked=0, Total=756 [2021-11-07 07:55:55,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 723 states. [2021-11-07 07:55:55,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 723 to 262. [2021-11-07 07:55:55,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 197 states have (on average 1.1573604060913705) internal successors, (228), 200 states have internal predecessors, (228), 35 states have call successors, (35), 21 states have call predecessors, (35), 24 states have return successors, (101), 40 states have call predecessors, (101), 34 states have call successors, (101) [2021-11-07 07:55:55,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 364 transitions. [2021-11-07 07:55:55,885 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 364 transitions. Word has length 56 [2021-11-07 07:55:55,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:55:55,885 INFO L470 AbstractCegarLoop]: Abstraction has 262 states and 364 transitions. [2021-11-07 07:55:55,885 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.789473684210526) internal successors, (53), 20 states have internal predecessors, (53), 9 states have call successors, (9), 9 states have call predecessors, (9), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:55:55,886 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 364 transitions. [2021-11-07 07:55:55,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-07 07:55:55,887 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:55:55,887 INFO L513 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1] [2021-11-07 07:55:55,925 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-11-07 07:55:56,103 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-11-07 07:55:56,103 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting applyHanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [applyHanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2021-11-07 07:55:56,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:55:56,104 INFO L85 PathProgramCache]: Analyzing trace with hash -267532630, now seen corresponding path program 8 times [2021-11-07 07:55:56,104 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:55:56,104 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646495038] [2021-11-07 07:55:56,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:55:56,104 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:55:56,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:55:56,293 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 0 proven. 220 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:55:56,293 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:55:56,293 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646495038] [2021-11-07 07:55:56,293 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646495038] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:55:56,294 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [287051817] [2021-11-07 07:55:56,294 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 07:55:56,294 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:55:56,294 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:55:56,295 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:55:56,318 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-07 07:55:56,523 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 07:55:56,523 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:55:56,525 INFO L263 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 37 conjunts are in the unsatisfiable core [2021-11-07 07:55:56,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:55:56,761 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 0 proven. 220 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:55:56,761 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [287051817] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:55:56,761 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:55:56,761 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 21 [2021-11-07 07:55:56,763 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18924775] [2021-11-07 07:55:56,764 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-07 07:55:56,764 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:55:56,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-07 07:55:56,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2021-11-07 07:55:56,765 INFO L87 Difference]: Start difference. First operand 262 states and 364 transitions. Second operand has 22 states, 21 states have (on average 2.8095238095238093) internal successors, (59), 22 states have internal predecessors, (59), 10 states have call successors, (10), 10 states have call predecessors, (10), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:55:57,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:55:57,142 INFO L93 Difference]: Finished difference Result 838 states and 1083 transitions. [2021-11-07 07:55:57,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-07 07:55:57,143 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 2.8095238095238093) internal successors, (59), 22 states have internal predecessors, (59), 10 states have call successors, (10), 10 states have call predecessors, (10), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2021-11-07 07:55:57,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:55:57,149 INFO L225 Difference]: With dead ends: 838 [2021-11-07 07:55:57,149 INFO L226 Difference]: Without dead ends: 837 [2021-11-07 07:55:57,150 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=277, Invalid=653, Unknown=0, NotChecked=0, Total=930 [2021-11-07 07:55:57,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 837 states. [2021-11-07 07:55:57,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 837 to 284. [2021-11-07 07:55:57,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 213 states have (on average 1.1502347417840375) internal successors, (245), 216 states have internal predecessors, (245), 39 states have call successors, (39), 23 states have call predecessors, (39), 26 states have return successors, (125), 44 states have call predecessors, (125), 38 states have call successors, (125) [2021-11-07 07:55:57,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 409 transitions. [2021-11-07 07:55:57,179 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 409 transitions. Word has length 63 [2021-11-07 07:55:57,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:55:57,179 INFO L470 AbstractCegarLoop]: Abstraction has 284 states and 409 transitions. [2021-11-07 07:55:57,180 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 2.8095238095238093) internal successors, (59), 22 states have internal predecessors, (59), 10 states have call successors, (10), 10 states have call predecessors, (10), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:55:57,180 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 409 transitions. [2021-11-07 07:55:57,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-07 07:55:57,187 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:55:57,187 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1] [2021-11-07 07:55:57,225 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-11-07 07:55:57,414 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:55:57,414 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting applyHanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [applyHanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2021-11-07 07:55:57,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:55:57,415 INFO L85 PathProgramCache]: Analyzing trace with hash -1669883805, now seen corresponding path program 9 times [2021-11-07 07:55:57,415 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:55:57,415 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928688808] [2021-11-07 07:55:57,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:55:57,415 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:55:57,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:55:57,675 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 0 proven. 279 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:55:57,675 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:55:57,675 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928688808] [2021-11-07 07:55:57,676 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928688808] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:55:57,676 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [523322495] [2021-11-07 07:55:57,676 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 07:55:57,676 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:55:57,676 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:55:57,682 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:55:57,700 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-07 07:55:57,910 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2021-11-07 07:55:57,910 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:55:57,912 INFO L263 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 41 conjunts are in the unsatisfiable core [2021-11-07 07:55:57,914 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:55:58,194 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 0 proven. 279 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:55:58,194 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [523322495] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:55:58,194 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:55:58,195 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 23 [2021-11-07 07:55:58,195 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663764019] [2021-11-07 07:55:58,195 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-11-07 07:55:58,196 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:55:58,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-11-07 07:55:58,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2021-11-07 07:55:58,197 INFO L87 Difference]: Start difference. First operand 284 states and 409 transitions. Second operand has 24 states, 23 states have (on average 2.8260869565217392) internal successors, (65), 24 states have internal predecessors, (65), 11 states have call successors, (11), 11 states have call predecessors, (11), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:55:58,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:55:58,657 INFO L93 Difference]: Finished difference Result 952 states and 1243 transitions. [2021-11-07 07:55:58,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-07 07:55:58,658 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 2.8260869565217392) internal successors, (65), 24 states have internal predecessors, (65), 11 states have call successors, (11), 11 states have call predecessors, (11), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2021-11-07 07:55:58,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:55:58,666 INFO L225 Difference]: With dead ends: 952 [2021-11-07 07:55:58,666 INFO L226 Difference]: Without dead ends: 951 [2021-11-07 07:55:58,667 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=332, Invalid=790, Unknown=0, NotChecked=0, Total=1122 [2021-11-07 07:55:58,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 951 states. [2021-11-07 07:55:58,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 951 to 306. [2021-11-07 07:55:58,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 306 states, 229 states have (on average 1.1441048034934498) internal successors, (262), 232 states have internal predecessors, (262), 43 states have call successors, (43), 25 states have call predecessors, (43), 28 states have return successors, (152), 48 states have call predecessors, (152), 42 states have call successors, (152) [2021-11-07 07:55:58,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 457 transitions. [2021-11-07 07:55:58,700 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 457 transitions. Word has length 70 [2021-11-07 07:55:58,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:55:58,701 INFO L470 AbstractCegarLoop]: Abstraction has 306 states and 457 transitions. [2021-11-07 07:55:58,701 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 2.8260869565217392) internal successors, (65), 24 states have internal predecessors, (65), 11 states have call successors, (11), 11 states have call predecessors, (11), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:55:58,701 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 457 transitions. [2021-11-07 07:55:58,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-07 07:55:58,707 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:55:58,707 INFO L513 BasicCegarLoop]: trace histogram [7, 7, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:55:58,746 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-11-07 07:55:58,926 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:55:58,926 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [applyHanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2021-11-07 07:55:58,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:55:58,927 INFO L85 PathProgramCache]: Analyzing trace with hash 1527377368, now seen corresponding path program 4 times [2021-11-07 07:55:58,927 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:55:58,927 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456017022] [2021-11-07 07:55:58,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:55:58,927 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:55:58,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:55:59,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-07 07:55:59,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:55:59,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-07 07:55:59,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:55:59,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-07 07:55:59,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:55:59,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-07 07:55:59,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:55:59,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-11-07 07:55:59,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:55:59,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-07 07:55:59,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:55:59,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-07 07:55:59,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:55:59,201 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 15 proven. 92 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2021-11-07 07:55:59,202 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:55:59,202 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456017022] [2021-11-07 07:55:59,202 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456017022] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:55:59,202 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1967682052] [2021-11-07 07:55:59,202 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-07 07:55:59,202 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:55:59,203 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:55:59,203 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:55:59,226 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-11-07 07:55:59,456 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-07 07:55:59,457 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:55:59,458 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-07 07:55:59,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:55:59,785 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 33 proven. 53 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2021-11-07 07:55:59,786 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1967682052] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:55:59,786 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:55:59,786 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 11] total 27 [2021-11-07 07:55:59,786 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448375949] [2021-11-07 07:55:59,787 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-11-07 07:55:59,787 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:55:59,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-11-07 07:55:59,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=602, Unknown=0, NotChecked=0, Total=702 [2021-11-07 07:55:59,788 INFO L87 Difference]: Start difference. First operand 306 states and 457 transitions. Second operand has 27 states, 25 states have (on average 2.64) internal successors, (66), 17 states have internal predecessors, (66), 14 states have call successors, (20), 10 states have call predecessors, (20), 6 states have return successors, (12), 9 states have call predecessors, (12), 6 states have call successors, (12) [2021-11-07 07:56:00,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:56:00,419 INFO L93 Difference]: Finished difference Result 724 states and 1138 transitions. [2021-11-07 07:56:00,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-11-07 07:56:00,419 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 25 states have (on average 2.64) internal successors, (66), 17 states have internal predecessors, (66), 14 states have call successors, (20), 10 states have call predecessors, (20), 6 states have return successors, (12), 9 states have call predecessors, (12), 6 states have call successors, (12) Word has length 81 [2021-11-07 07:56:00,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:56:00,423 INFO L225 Difference]: With dead ends: 724 [2021-11-07 07:56:00,423 INFO L226 Difference]: Without dead ends: 432 [2021-11-07 07:56:00,427 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 497 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=290, Invalid=1780, Unknown=0, NotChecked=0, Total=2070 [2021-11-07 07:56:00,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2021-11-07 07:56:00,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 384. [2021-11-07 07:56:00,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 295 states have (on average 1.1084745762711865) internal successors, (327), 290 states have internal predecessors, (327), 51 states have call successors, (51), 39 states have call predecessors, (51), 33 states have return successors, (98), 54 states have call predecessors, (98), 50 states have call successors, (98) [2021-11-07 07:56:00,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 476 transitions. [2021-11-07 07:56:00,453 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 476 transitions. Word has length 81 [2021-11-07 07:56:00,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:56:00,454 INFO L470 AbstractCegarLoop]: Abstraction has 384 states and 476 transitions. [2021-11-07 07:56:00,454 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 25 states have (on average 2.64) internal successors, (66), 17 states have internal predecessors, (66), 14 states have call successors, (20), 10 states have call predecessors, (20), 6 states have return successors, (12), 9 states have call predecessors, (12), 6 states have call successors, (12) [2021-11-07 07:56:00,454 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 476 transitions. [2021-11-07 07:56:00,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-07 07:56:00,456 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:56:00,456 INFO L513 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1] [2021-11-07 07:56:00,494 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-11-07 07:56:00,676 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:56:00,676 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting applyHanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [applyHanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2021-11-07 07:56:00,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:56:00,677 INFO L85 PathProgramCache]: Analyzing trace with hash -1085664118, now seen corresponding path program 10 times [2021-11-07 07:56:00,677 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:56:00,677 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101293140] [2021-11-07 07:56:00,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:56:00,677 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:56:00,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:56:00,960 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 0 proven. 345 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:56:00,960 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:56:00,961 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101293140] [2021-11-07 07:56:00,961 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101293140] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:56:00,961 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1416531313] [2021-11-07 07:56:00,961 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-07 07:56:00,961 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:56:00,961 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:56:00,962 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:56:00,962 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-11-07 07:56:01,221 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-07 07:56:01,221 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:56:01,223 INFO L263 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 45 conjunts are in the unsatisfiable core [2021-11-07 07:56:01,226 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:56:01,481 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 0 proven. 345 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:56:01,482 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1416531313] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:56:01,482 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:56:01,482 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 25 [2021-11-07 07:56:01,482 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981330072] [2021-11-07 07:56:01,482 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-11-07 07:56:01,483 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:56:01,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-11-07 07:56:01,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=469, Unknown=0, NotChecked=0, Total=650 [2021-11-07 07:56:01,484 INFO L87 Difference]: Start difference. First operand 384 states and 476 transitions. Second operand has 26 states, 25 states have (on average 2.84) internal successors, (71), 26 states have internal predecessors, (71), 12 states have call successors, (12), 12 states have call predecessors, (12), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:56:01,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:56:01,859 INFO L93 Difference]: Finished difference Result 605 states and 752 transitions. [2021-11-07 07:56:01,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-07 07:56:01,860 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.84) internal successors, (71), 26 states have internal predecessors, (71), 12 states have call successors, (12), 12 states have call predecessors, (12), 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 07:56:01,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:56:01,864 INFO L225 Difference]: With dead ends: 605 [2021-11-07 07:56:01,865 INFO L226 Difference]: Without dead ends: 604 [2021-11-07 07:56:01,866 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=392, Invalid=940, Unknown=0, NotChecked=0, Total=1332 [2021-11-07 07:56:01,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 604 states. [2021-11-07 07:56:01,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 604 to 420. [2021-11-07 07:56:01,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 420 states, 322 states have (on average 1.1024844720496894) internal successors, (355), 316 states have internal predecessors, (355), 57 states have call successors, (57), 43 states have call predecessors, (57), 36 states have return successors, (114), 60 states have call predecessors, (114), 56 states have call successors, (114) [2021-11-07 07:56:01,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 420 states to 420 states and 526 transitions. [2021-11-07 07:56:01,895 INFO L78 Accepts]: Start accepts. Automaton has 420 states and 526 transitions. Word has length 77 [2021-11-07 07:56:01,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:56:01,895 INFO L470 AbstractCegarLoop]: Abstraction has 420 states and 526 transitions. [2021-11-07 07:56:01,896 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.84) internal successors, (71), 26 states have internal predecessors, (71), 12 states have call successors, (12), 12 states have call predecessors, (12), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:56:01,896 INFO L276 IsEmpty]: Start isEmpty. Operand 420 states and 526 transitions. [2021-11-07 07:56:01,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-07 07:56:01,898 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:56:01,898 INFO L513 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1] [2021-11-07 07:56:01,931 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-11-07 07:56:02,114 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-11-07 07:56:02,115 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting applyHanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [applyHanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2021-11-07 07:56:02,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:56:02,115 INFO L85 PathProgramCache]: Analyzing trace with hash 289533571, now seen corresponding path program 11 times [2021-11-07 07:56:02,115 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:56:02,115 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829514586] [2021-11-07 07:56:02,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:56:02,116 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:56:02,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:56:02,420 INFO L134 CoverageAnalysis]: Checked inductivity of 418 backedges. 0 proven. 418 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:56:02,420 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:56:02,420 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829514586] [2021-11-07 07:56:02,420 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829514586] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:56:02,421 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1614713781] [2021-11-07 07:56:02,421 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-07 07:56:02,421 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:56:02,421 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:56:02,422 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:56:02,438 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-11-07 07:56:02,737 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2021-11-07 07:56:02,737 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:56:02,740 INFO L263 TraceCheckSpWp]: Trace formula consists of 384 conjuncts, 49 conjunts are in the unsatisfiable core [2021-11-07 07:56:02,750 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:56:03,065 INFO L134 CoverageAnalysis]: Checked inductivity of 418 backedges. 0 proven. 418 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:56:03,065 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1614713781] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:56:03,065 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:56:03,065 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 27 [2021-11-07 07:56:03,066 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893057035] [2021-11-07 07:56:03,066 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-11-07 07:56:03,066 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:56:03,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-11-07 07:56:03,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=547, Unknown=0, NotChecked=0, Total=756 [2021-11-07 07:56:03,067 INFO L87 Difference]: Start difference. First operand 420 states and 526 transitions. Second operand has 28 states, 27 states have (on average 2.8518518518518516) internal successors, (77), 28 states have internal predecessors, (77), 13 states have call successors, (13), 13 states have call predecessors, (13), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:56:03,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:56:03,523 INFO L93 Difference]: Finished difference Result 729 states and 911 transitions. [2021-11-07 07:56:03,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-07 07:56:03,523 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 2.8518518518518516) internal successors, (77), 28 states have internal predecessors, (77), 13 states have call successors, (13), 13 states have call predecessors, (13), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2021-11-07 07:56:03,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:56:03,529 INFO L225 Difference]: With dead ends: 729 [2021-11-07 07:56:03,529 INFO L226 Difference]: Without dead ends: 728 [2021-11-07 07:56:03,530 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 271 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=457, Invalid=1103, Unknown=0, NotChecked=0, Total=1560 [2021-11-07 07:56:03,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 728 states. [2021-11-07 07:56:03,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 728 to 453. [2021-11-07 07:56:03,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 453 states, 347 states have (on average 1.0979827089337175) internal successors, (381), 340 states have internal predecessors, (381), 62 states have call successors, (62), 47 states have call predecessors, (62), 39 states have return successors, (131), 65 states have call predecessors, (131), 61 states have call successors, (131) [2021-11-07 07:56:03,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 453 states to 453 states and 574 transitions. [2021-11-07 07:56:03,571 INFO L78 Accepts]: Start accepts. Automaton has 453 states and 574 transitions. Word has length 84 [2021-11-07 07:56:03,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:56:03,571 INFO L470 AbstractCegarLoop]: Abstraction has 453 states and 574 transitions. [2021-11-07 07:56:03,571 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 2.8518518518518516) internal successors, (77), 28 states have internal predecessors, (77), 13 states have call successors, (13), 13 states have call predecessors, (13), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:56:03,571 INFO L276 IsEmpty]: Start isEmpty. Operand 453 states and 574 transitions. [2021-11-07 07:56:03,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-07 07:56:03,573 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:56:03,574 INFO L513 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1] [2021-11-07 07:56:03,608 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-11-07 07:56:03,791 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-11-07 07:56:03,791 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting applyHanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [applyHanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2021-11-07 07:56:03,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:56:03,792 INFO L85 PathProgramCache]: Analyzing trace with hash -730293654, now seen corresponding path program 12 times [2021-11-07 07:56:03,792 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:56:03,792 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627403362] [2021-11-07 07:56:03,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:56:03,792 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:56:03,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:56:04,172 INFO L134 CoverageAnalysis]: Checked inductivity of 498 backedges. 0 proven. 498 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:56:04,173 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:56:04,173 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627403362] [2021-11-07 07:56:04,173 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627403362] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:56:04,173 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [756846754] [2021-11-07 07:56:04,173 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-07 07:56:04,173 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:56:04,173 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:56:04,175 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:56:04,179 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-11-07 07:56:04,532 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2021-11-07 07:56:04,532 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:56:04,535 INFO L263 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 53 conjunts are in the unsatisfiable core [2021-11-07 07:56:04,547 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:56:04,828 INFO L134 CoverageAnalysis]: Checked inductivity of 498 backedges. 0 proven. 498 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:56:04,829 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [756846754] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:56:04,829 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:56:04,829 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 29 [2021-11-07 07:56:04,829 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684457559] [2021-11-07 07:56:04,831 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-11-07 07:56:04,831 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:56:04,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-11-07 07:56:04,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=239, Invalid=631, Unknown=0, NotChecked=0, Total=870 [2021-11-07 07:56:04,832 INFO L87 Difference]: Start difference. First operand 453 states and 574 transitions. Second operand has 30 states, 29 states have (on average 2.8620689655172415) internal successors, (83), 30 states have internal predecessors, (83), 14 states have call successors, (14), 14 states have call predecessors, (14), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:56:05,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:56:05,342 INFO L93 Difference]: Finished difference Result 765 states and 963 transitions. [2021-11-07 07:56:05,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-11-07 07:56:05,342 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 2.8620689655172415) internal successors, (83), 30 states have internal predecessors, (83), 14 states have call successors, (14), 14 states have call predecessors, (14), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2021-11-07 07:56:05,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:56:05,348 INFO L225 Difference]: With dead ends: 765 [2021-11-07 07:56:05,349 INFO L226 Difference]: Without dead ends: 764 [2021-11-07 07:56:05,350 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 314 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=527, Invalid=1279, Unknown=0, NotChecked=0, Total=1806 [2021-11-07 07:56:05,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 764 states. [2021-11-07 07:56:05,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 764 to 489. [2021-11-07 07:56:05,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 489 states, 374 states have (on average 1.0935828877005347) internal successors, (409), 366 states have internal predecessors, (409), 68 states have call successors, (68), 51 states have call predecessors, (68), 42 states have return successors, (149), 71 states have call predecessors, (149), 67 states have call successors, (149) [2021-11-07 07:56:05,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 489 states to 489 states and 626 transitions. [2021-11-07 07:56:05,383 INFO L78 Accepts]: Start accepts. Automaton has 489 states and 626 transitions. Word has length 91 [2021-11-07 07:56:05,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:56:05,384 INFO L470 AbstractCegarLoop]: Abstraction has 489 states and 626 transitions. [2021-11-07 07:56:05,384 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 2.8620689655172415) internal successors, (83), 30 states have internal predecessors, (83), 14 states have call successors, (14), 14 states have call predecessors, (14), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:56:05,384 INFO L276 IsEmpty]: Start isEmpty. Operand 489 states and 626 transitions. [2021-11-07 07:56:05,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-07 07:56:05,386 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:56:05,387 INFO L513 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1] [2021-11-07 07:56:05,427 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-11-07 07:56:05,614 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-11-07 07:56:05,614 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting applyHanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [applyHanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2021-11-07 07:56:05,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:56:05,615 INFO L85 PathProgramCache]: Analyzing trace with hash 1303055523, now seen corresponding path program 13 times [2021-11-07 07:56:05,615 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:56:05,615 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553792425] [2021-11-07 07:56:05,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:56:05,615 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:56:05,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:56:05,998 INFO L134 CoverageAnalysis]: Checked inductivity of 585 backedges. 0 proven. 585 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:56:05,998 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:56:05,998 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553792425] [2021-11-07 07:56:05,998 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553792425] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:56:05,998 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [981383737] [2021-11-07 07:56:05,998 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-07 07:56:06,002 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:56:06,002 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:56:06,003 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:56:06,010 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-11-07 07:56:06,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:56:06,369 INFO L263 TraceCheckSpWp]: Trace formula consists of 442 conjuncts, 57 conjunts are in the unsatisfiable core [2021-11-07 07:56:06,371 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:56:06,709 INFO L134 CoverageAnalysis]: Checked inductivity of 585 backedges. 0 proven. 585 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:56:06,710 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [981383737] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:56:06,710 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:56:06,710 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 31 [2021-11-07 07:56:06,710 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139104457] [2021-11-07 07:56:06,710 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-11-07 07:56:06,710 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:56:06,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-11-07 07:56:06,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=271, Invalid=721, Unknown=0, NotChecked=0, Total=992 [2021-11-07 07:56:06,712 INFO L87 Difference]: Start difference. First operand 489 states and 626 transitions. Second operand has 32 states, 31 states have (on average 2.870967741935484) internal successors, (89), 32 states have internal predecessors, (89), 15 states have call successors, (15), 15 states have call predecessors, (15), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:56:07,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:56:07,289 INFO L93 Difference]: Finished difference Result 889 states and 1125 transitions. [2021-11-07 07:56:07,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-11-07 07:56:07,290 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 2.870967741935484) internal successors, (89), 32 states have internal predecessors, (89), 15 states have call successors, (15), 15 states have call predecessors, (15), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2021-11-07 07:56:07,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:56:07,296 INFO L225 Difference]: With dead ends: 889 [2021-11-07 07:56:07,296 INFO L226 Difference]: Without dead ends: 888 [2021-11-07 07:56:07,298 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 360 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=602, Invalid=1468, Unknown=0, NotChecked=0, Total=2070 [2021-11-07 07:56:07,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 888 states. [2021-11-07 07:56:07,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 888 to 522. [2021-11-07 07:56:07,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 522 states, 399 states have (on average 1.0902255639097744) internal successors, (435), 390 states have internal predecessors, (435), 73 states have call successors, (73), 55 states have call predecessors, (73), 45 states have return successors, (169), 76 states have call predecessors, (169), 72 states have call successors, (169) [2021-11-07 07:56:07,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 522 states to 522 states and 677 transitions. [2021-11-07 07:56:07,340 INFO L78 Accepts]: Start accepts. Automaton has 522 states and 677 transitions. Word has length 98 [2021-11-07 07:56:07,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:56:07,340 INFO L470 AbstractCegarLoop]: Abstraction has 522 states and 677 transitions. [2021-11-07 07:56:07,341 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 2.870967741935484) internal successors, (89), 32 states have internal predecessors, (89), 15 states have call successors, (15), 15 states have call predecessors, (15), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:56:07,341 INFO L276 IsEmpty]: Start isEmpty. Operand 522 states and 677 transitions. [2021-11-07 07:56:07,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-11-07 07:56:07,344 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:56:07,344 INFO L513 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1] [2021-11-07 07:56:07,380 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-11-07 07:56:07,565 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-11-07 07:56:07,565 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting applyHanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [applyHanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2021-11-07 07:56:07,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:56:07,566 INFO L85 PathProgramCache]: Analyzing trace with hash -547923894, now seen corresponding path program 14 times [2021-11-07 07:56:07,566 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:56:07,566 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709414128] [2021-11-07 07:56:07,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:56:07,566 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:56:07,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:56:08,006 INFO L134 CoverageAnalysis]: Checked inductivity of 679 backedges. 0 proven. 679 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:56:08,006 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:56:08,006 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709414128] [2021-11-07 07:56:08,006 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709414128] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:56:08,007 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2091174405] [2021-11-07 07:56:08,007 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 07:56:08,007 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:56:08,007 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:56:08,010 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:56:08,029 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-11-07 07:56:08,508 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 07:56:08,508 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:56:08,512 INFO L263 TraceCheckSpWp]: Trace formula consists of 471 conjuncts, 61 conjunts are in the unsatisfiable core [2021-11-07 07:56:08,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:56:08,893 INFO L134 CoverageAnalysis]: Checked inductivity of 679 backedges. 0 proven. 679 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:56:08,894 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2091174405] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:56:08,894 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:56:08,894 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 33 [2021-11-07 07:56:08,894 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969559557] [2021-11-07 07:56:08,895 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-11-07 07:56:08,895 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:56:08,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-11-07 07:56:08,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=305, Invalid=817, Unknown=0, NotChecked=0, Total=1122 [2021-11-07 07:56:08,896 INFO L87 Difference]: Start difference. First operand 522 states and 677 transitions. Second operand has 34 states, 33 states have (on average 2.878787878787879) internal successors, (95), 34 states have internal predecessors, (95), 16 states have call successors, (16), 16 states have call predecessors, (16), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:56:09,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:56:09,524 INFO L93 Difference]: Finished difference Result 925 states and 1179 transitions. [2021-11-07 07:56:09,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-11-07 07:56:09,524 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 2.878787878787879) internal successors, (95), 34 states have internal predecessors, (95), 16 states have call successors, (16), 16 states have call predecessors, (16), 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 07:56:09,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:56:09,530 INFO L225 Difference]: With dead ends: 925 [2021-11-07 07:56:09,530 INFO L226 Difference]: Without dead ends: 924 [2021-11-07 07:56:09,531 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 409 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=682, Invalid=1670, Unknown=0, NotChecked=0, Total=2352 [2021-11-07 07:56:09,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 924 states. [2021-11-07 07:56:09,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 924 to 558. [2021-11-07 07:56:09,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 558 states, 426 states have (on average 1.0868544600938967) internal successors, (463), 416 states have internal predecessors, (463), 79 states have call successors, (79), 59 states have call predecessors, (79), 48 states have return successors, (189), 82 states have call predecessors, (189), 78 states have call successors, (189) [2021-11-07 07:56:09,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 558 states to 558 states and 731 transitions. [2021-11-07 07:56:09,571 INFO L78 Accepts]: Start accepts. Automaton has 558 states and 731 transitions. Word has length 105 [2021-11-07 07:56:09,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:56:09,571 INFO L470 AbstractCegarLoop]: Abstraction has 558 states and 731 transitions. [2021-11-07 07:56:09,572 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 2.878787878787879) internal successors, (95), 34 states have internal predecessors, (95), 16 states have call successors, (16), 16 states have call predecessors, (16), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:56:09,572 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states and 731 transitions. [2021-11-07 07:56:09,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-07 07:56:09,576 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:56:09,576 INFO L513 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1] [2021-11-07 07:56:09,614 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2021-11-07 07:56:09,794 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-11-07 07:56:09,794 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting applyHanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [applyHanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2021-11-07 07:56:09,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:56:09,795 INFO L85 PathProgramCache]: Analyzing trace with hash 271905475, now seen corresponding path program 15 times [2021-11-07 07:56:09,795 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:56:09,795 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914909209] [2021-11-07 07:56:09,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:56:09,795 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:56:09,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:56:10,298 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 07:56:10,299 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:56:10,299 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914909209] [2021-11-07 07:56:10,299 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914909209] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:56:10,299 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [765714257] [2021-11-07 07:56:10,299 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 07:56:10,299 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:56:10,300 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:56:10,302 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:56:10,321 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-11-07 07:56:10,801 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2021-11-07 07:56:10,801 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:56:10,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 500 conjuncts, 65 conjunts are in the unsatisfiable core [2021-11-07 07:56:10,807 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:56:11,144 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 07:56:11,145 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [765714257] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:56:11,145 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:56:11,145 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 35 [2021-11-07 07:56:11,145 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886900101] [2021-11-07 07:56:11,145 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2021-11-07 07:56:11,146 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:56:11,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-11-07 07:56:11,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=341, Invalid=919, Unknown=0, NotChecked=0, Total=1260 [2021-11-07 07:56:11,147 INFO L87 Difference]: Start difference. First operand 558 states and 731 transitions. Second operand has 36 states, 35 states have (on average 2.8857142857142857) internal successors, (101), 36 states have internal predecessors, (101), 17 states have call successors, (17), 17 states have call predecessors, (17), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:56:11,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:56:11,879 INFO L93 Difference]: Finished difference Result 1049 states and 1344 transitions. [2021-11-07 07:56:11,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-11-07 07:56:11,879 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 35 states have (on average 2.8857142857142857) internal successors, (101), 36 states have internal predecessors, (101), 17 states have call successors, (17), 17 states have call predecessors, (17), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2021-11-07 07:56:11,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:56:11,887 INFO L225 Difference]: With dead ends: 1049 [2021-11-07 07:56:11,888 INFO L226 Difference]: Without dead ends: 1048 [2021-11-07 07:56:11,890 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 461 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=767, Invalid=1885, Unknown=0, NotChecked=0, Total=2652 [2021-11-07 07:56:11,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1048 states. [2021-11-07 07:56:11,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1048 to 591. [2021-11-07 07:56:11,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 591 states, 451 states have (on average 1.0842572062084257) internal successors, (489), 440 states have internal predecessors, (489), 84 states have call successors, (84), 63 states have call predecessors, (84), 51 states have return successors, (212), 87 states have call predecessors, (212), 83 states have call successors, (212) [2021-11-07 07:56:11,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 591 states to 591 states and 785 transitions. [2021-11-07 07:56:11,942 INFO L78 Accepts]: Start accepts. Automaton has 591 states and 785 transitions. Word has length 112 [2021-11-07 07:56:11,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:56:11,942 INFO L470 AbstractCegarLoop]: Abstraction has 591 states and 785 transitions. [2021-11-07 07:56:11,943 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 35 states have (on average 2.8857142857142857) internal successors, (101), 36 states have internal predecessors, (101), 17 states have call successors, (17), 17 states have call predecessors, (17), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:56:11,943 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states and 785 transitions. [2021-11-07 07:56:11,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-11-07 07:56:11,947 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:56:11,948 INFO L513 BasicCegarLoop]: trace histogram [15, 15, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:56:11,986 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2021-11-07 07:56:12,174 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:56:12,174 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [applyHanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2021-11-07 07:56:12,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:56:12,175 INFO L85 PathProgramCache]: Analyzing trace with hash 1192003213, now seen corresponding path program 1 times [2021-11-07 07:56:12,175 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:56:12,175 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385351331] [2021-11-07 07:56:12,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:56:12,175 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:56:12,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:56:12,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-07 07:56:12,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:56:12,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-07 07:56:12,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:56:12,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-07 07:56:12,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:56:12,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-07 07:56:12,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:56:12,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-07 07:56:12,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:56:12,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-11-07 07:56:12,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:56:12,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-07 07:56:12,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:56:12,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-07 07:56:12,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:56:12,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-11-07 07:56:12,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:56:12,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-07 07:56:12,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:56:12,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-07 07:56:12,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:56:12,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-07 07:56:12,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:56:12,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-11-07 07:56:12,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:56:12,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-07 07:56:12,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:56:12,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-07 07:56:12,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:56:12,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-11-07 07:56:12,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:56:12,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-07 07:56:12,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:56:12,364 INFO L134 CoverageAnalysis]: Checked inductivity of 601 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 597 trivial. 0 not checked. [2021-11-07 07:56:12,364 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:56:12,364 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385351331] [2021-11-07 07:56:12,365 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385351331] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:56:12,365 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [587496529] [2021-11-07 07:56:12,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:56:12,365 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:56:12,365 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:56:12,370 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:56:12,387 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-11-07 07:56:12,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:56:12,957 INFO L263 TraceCheckSpWp]: Trace formula consists of 509 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 07:56:12,960 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:56:13,231 INFO L134 CoverageAnalysis]: Checked inductivity of 601 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 597 trivial. 0 not checked. [2021-11-07 07:56:13,232 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [587496529] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:56:13,232 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:56:13,232 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 8 [2021-11-07 07:56:13,232 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856579479] [2021-11-07 07:56:13,233 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-07 07:56:13,233 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:56:13,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-07 07:56:13,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-07 07:56:13,234 INFO L87 Difference]: Start difference. First operand 591 states and 785 transitions. Second operand has 9 states, 8 states have (on average 4.375) internal successors, (35), 8 states have internal predecessors, (35), 1 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 1 states have call successors, (6) [2021-11-07 07:56:13,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:56:13,356 INFO L93 Difference]: Finished difference Result 626 states and 838 transitions. [2021-11-07 07:56:13,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 07:56:13,357 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 4.375) internal successors, (35), 8 states have internal predecessors, (35), 1 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 1 states have call successors, (6) Word has length 144 [2021-11-07 07:56:13,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:56:13,361 INFO L225 Difference]: With dead ends: 626 [2021-11-07 07:56:13,361 INFO L226 Difference]: Without dead ends: 624 [2021-11-07 07:56:13,362 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 174 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2021-11-07 07:56:13,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 624 states. [2021-11-07 07:56:13,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 624 to 619. [2021-11-07 07:56:13,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 619 states, 475 states have (on average 1.0905263157894738) internal successors, (518), 463 states have internal predecessors, (518), 84 states have call successors, (84), 63 states have call predecessors, (84), 55 states have return successors, (217), 92 states have call predecessors, (217), 83 states have call successors, (217) [2021-11-07 07:56:13,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 619 states to 619 states and 819 transitions. [2021-11-07 07:56:13,402 INFO L78 Accepts]: Start accepts. Automaton has 619 states and 819 transitions. Word has length 144 [2021-11-07 07:56:13,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:56:13,403 INFO L470 AbstractCegarLoop]: Abstraction has 619 states and 819 transitions. [2021-11-07 07:56:13,403 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 4.375) internal successors, (35), 8 states have internal predecessors, (35), 1 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 1 states have call successors, (6) [2021-11-07 07:56:13,403 INFO L276 IsEmpty]: Start isEmpty. Operand 619 states and 819 transitions. [2021-11-07 07:56:13,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-11-07 07:56:13,408 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:56:13,408 INFO L513 BasicCegarLoop]: trace histogram [15, 15, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:56:13,446 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2021-11-07 07:56:13,634 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-11-07 07:56:13,634 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [applyHanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2021-11-07 07:56:13,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:56:13,635 INFO L85 PathProgramCache]: Analyzing trace with hash -1702605997, now seen corresponding path program 1 times [2021-11-07 07:56:13,635 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:56:13,635 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141931994] [2021-11-07 07:56:13,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:56:13,635 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:56:13,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:56:13,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-07 07:56:13,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:56:13,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-07 07:56:13,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:56:13,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-07 07:56:13,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:56:13,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-07 07:56:13,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:56:13,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-07 07:56:13,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:56:13,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-11-07 07:56:13,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:56:13,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-07 07:56:13,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:56:13,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-07 07:56:13,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:56:13,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-11-07 07:56:13,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:56:13,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-07 07:56:13,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:56:13,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-07 07:56:13,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:56:13,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-07 07:56:13,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:56:13,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-11-07 07:56:13,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:56:13,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-07 07:56:13,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:56:13,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-07 07:56:13,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:56:13,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-11-07 07:56:13,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:56:13,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-07 07:56:13,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:56:13,824 INFO L134 CoverageAnalysis]: Checked inductivity of 602 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 597 trivial. 0 not checked. [2021-11-07 07:56:13,824 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:56:13,825 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141931994] [2021-11-07 07:56:13,825 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141931994] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:56:13,825 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1676159782] [2021-11-07 07:56:13,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:56:13,825 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:56:13,826 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:56:13,830 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:56:13,846 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-11-07 07:56:14,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:56:14,483 INFO L263 TraceCheckSpWp]: Trace formula consists of 510 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 07:56:14,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:56:14,762 INFO L134 CoverageAnalysis]: Checked inductivity of 602 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 597 trivial. 0 not checked. [2021-11-07 07:56:14,763 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1676159782] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:56:14,763 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-07 07:56:14,763 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 8 [2021-11-07 07:56:14,763 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41873333] [2021-11-07 07:56:14,764 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 07:56:14,764 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:56:14,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 07:56:14,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-07 07:56:14,765 INFO L87 Difference]: Start difference. First operand 619 states and 819 transitions. Second operand has 6 states, 5 states have (on average 5.6) internal successors, (28), 6 states have internal predecessors, (28), 1 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2021-11-07 07:56:14,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:56:14,822 INFO L93 Difference]: Finished difference Result 619 states and 819 transitions. [2021-11-07 07:56:14,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 07:56:14,823 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.6) internal successors, (28), 6 states have internal predecessors, (28), 1 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) Word has length 145 [2021-11-07 07:56:14,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:56:14,828 INFO L225 Difference]: With dead ends: 619 [2021-11-07 07:56:14,828 INFO L226 Difference]: Without dead ends: 603 [2021-11-07 07:56:14,830 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 175 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-07 07:56:14,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 603 states. [2021-11-07 07:56:14,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 603 to 603. [2021-11-07 07:56:14,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 603 states, 463 states have (on average 1.0583153347732182) internal successors, (490), 449 states have internal predecessors, (490), 84 states have call successors, (84), 63 states have call predecessors, (84), 53 states have return successors, (215), 90 states have call predecessors, (215), 83 states have call successors, (215) [2021-11-07 07:56:14,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 789 transitions. [2021-11-07 07:56:14,886 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 789 transitions. Word has length 145 [2021-11-07 07:56:14,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:56:14,887 INFO L470 AbstractCegarLoop]: Abstraction has 603 states and 789 transitions. [2021-11-07 07:56:14,887 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.6) internal successors, (28), 6 states have internal predecessors, (28), 1 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2021-11-07 07:56:14,888 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 789 transitions. [2021-11-07 07:56:14,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-11-07 07:56:14,892 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:56:14,892 INFO L513 BasicCegarLoop]: trace histogram [17, 17, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1] [2021-11-07 07:56:14,937 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2021-11-07 07:56:15,114 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-11-07 07:56:15,114 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting applyHanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [applyHanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2021-11-07 07:56:15,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:56:15,115 INFO L85 PathProgramCache]: Analyzing trace with hash 723799594, now seen corresponding path program 16 times [2021-11-07 07:56:15,115 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:56:15,115 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127380111] [2021-11-07 07:56:15,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:56:15,115 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:56:15,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:56:15,715 INFO L134 CoverageAnalysis]: Checked inductivity of 888 backedges. 0 proven. 888 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:56:15,715 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:56:15,715 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127380111] [2021-11-07 07:56:15,716 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127380111] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:56:15,716 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [667164144] [2021-11-07 07:56:15,716 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-07 07:56:15,716 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:56:15,716 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:56:15,718 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:56:15,721 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2021-11-07 07:56:16,290 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-07 07:56:16,290 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:56:16,294 INFO L263 TraceCheckSpWp]: Trace formula consists of 529 conjuncts, 69 conjunts are in the unsatisfiable core [2021-11-07 07:56:16,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:56:16,641 INFO L134 CoverageAnalysis]: Checked inductivity of 888 backedges. 0 proven. 888 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:56:16,641 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [667164144] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:56:16,641 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:56:16,642 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 37 [2021-11-07 07:56:16,642 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908955649] [2021-11-07 07:56:16,642 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2021-11-07 07:56:16,642 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:56:16,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-11-07 07:56:16,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=379, Invalid=1027, Unknown=0, NotChecked=0, Total=1406 [2021-11-07 07:56:16,643 INFO L87 Difference]: Start difference. First operand 603 states and 789 transitions. Second operand has 38 states, 37 states have (on average 2.891891891891892) internal successors, (107), 38 states have internal predecessors, (107), 18 states have call successors, (18), 18 states have call predecessors, (18), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:56:17,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:56:17,493 INFO L93 Difference]: Finished difference Result 1157 states and 1424 transitions. [2021-11-07 07:56:17,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-11-07 07:56:17,494 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 37 states have (on average 2.891891891891892) internal successors, (107), 38 states have internal predecessors, (107), 18 states have call successors, (18), 18 states have call predecessors, (18), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 119 [2021-11-07 07:56:17,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:56:17,501 INFO L225 Difference]: With dead ends: 1157 [2021-11-07 07:56:17,501 INFO L226 Difference]: Without dead ends: 1156 [2021-11-07 07:56:17,503 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 516 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=857, Invalid=2113, Unknown=0, NotChecked=0, Total=2970 [2021-11-07 07:56:17,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1156 states. [2021-11-07 07:56:17,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1156 to 639. [2021-11-07 07:56:17,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 639 states, 490 states have (on average 1.0571428571428572) internal successors, (518), 475 states have internal predecessors, (518), 90 states have call successors, (90), 67 states have call predecessors, (90), 56 states have return successors, (237), 96 states have call predecessors, (237), 89 states have call successors, (237) [2021-11-07 07:56:17,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 639 states to 639 states and 845 transitions. [2021-11-07 07:56:17,546 INFO L78 Accepts]: Start accepts. Automaton has 639 states and 845 transitions. Word has length 119 [2021-11-07 07:56:17,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:56:17,547 INFO L470 AbstractCegarLoop]: Abstraction has 639 states and 845 transitions. [2021-11-07 07:56:17,547 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 37 states have (on average 2.891891891891892) internal successors, (107), 38 states have internal predecessors, (107), 18 states have call successors, (18), 18 states have call predecessors, (18), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:56:17,547 INFO L276 IsEmpty]: Start isEmpty. Operand 639 states and 845 transitions. [2021-11-07 07:56:17,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-11-07 07:56:17,551 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:56:17,551 INFO L513 BasicCegarLoop]: trace histogram [18, 18, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1] [2021-11-07 07:56:17,592 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2021-11-07 07:56:17,774 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:56:17,774 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting applyHanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [applyHanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2021-11-07 07:56:17,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:56:17,775 INFO L85 PathProgramCache]: Analyzing trace with hash -1948147485, now seen corresponding path program 17 times [2021-11-07 07:56:17,775 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:56:17,775 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925165510] [2021-11-07 07:56:17,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:56:17,775 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:56:17,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:56:18,393 INFO L134 CoverageAnalysis]: Checked inductivity of 1003 backedges. 0 proven. 1003 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:56:18,394 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:56:18,394 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925165510] [2021-11-07 07:56:18,394 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925165510] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:56:18,394 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1679039216] [2021-11-07 07:56:18,394 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-07 07:56:18,395 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:56:18,395 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:56:18,396 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:56:18,417 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2021-11-07 07:56:19,045 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2021-11-07 07:56:19,045 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:56:19,048 INFO L263 TraceCheckSpWp]: Trace formula consists of 558 conjuncts, 73 conjunts are in the unsatisfiable core [2021-11-07 07:56:19,051 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:56:19,508 INFO L134 CoverageAnalysis]: Checked inductivity of 1003 backedges. 0 proven. 1003 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:56:19,509 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1679039216] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:56:19,509 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:56:19,509 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 39 [2021-11-07 07:56:19,509 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470552926] [2021-11-07 07:56:19,510 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2021-11-07 07:56:19,510 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:56:19,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-11-07 07:56:19,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=419, Invalid=1141, Unknown=0, NotChecked=0, Total=1560 [2021-11-07 07:56:19,512 INFO L87 Difference]: Start difference. First operand 639 states and 845 transitions. Second operand has 40 states, 39 states have (on average 2.8974358974358974) internal successors, (113), 40 states have internal predecessors, (113), 19 states have call successors, (19), 19 states have call predecessors, (19), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:56:20,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:56:20,507 INFO L93 Difference]: Finished difference Result 1293 states and 1596 transitions. [2021-11-07 07:56:20,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-11-07 07:56:20,508 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 39 states have (on average 2.8974358974358974) internal successors, (113), 40 states have internal predecessors, (113), 19 states have call successors, (19), 19 states have call predecessors, (19), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2021-11-07 07:56:20,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:56:20,516 INFO L225 Difference]: With dead ends: 1293 [2021-11-07 07:56:20,516 INFO L226 Difference]: Without dead ends: 1292 [2021-11-07 07:56:20,518 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 574 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=952, Invalid=2354, Unknown=0, NotChecked=0, Total=3306 [2021-11-07 07:56:20,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1292 states. [2021-11-07 07:56:20,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1292 to 672. [2021-11-07 07:56:20,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 672 states, 515 states have (on average 1.0563106796116506) internal successors, (544), 499 states have internal predecessors, (544), 95 states have call successors, (95), 71 states have call predecessors, (95), 59 states have return successors, (263), 101 states have call predecessors, (263), 94 states have call successors, (263) [2021-11-07 07:56:20,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 672 states to 672 states and 902 transitions. [2021-11-07 07:56:20,568 INFO L78 Accepts]: Start accepts. Automaton has 672 states and 902 transitions. Word has length 126 [2021-11-07 07:56:20,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:56:20,568 INFO L470 AbstractCegarLoop]: Abstraction has 672 states and 902 transitions. [2021-11-07 07:56:20,568 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 39 states have (on average 2.8974358974358974) internal successors, (113), 40 states have internal predecessors, (113), 19 states have call successors, (19), 19 states have call predecessors, (19), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:56:20,569 INFO L276 IsEmpty]: Start isEmpty. Operand 672 states and 902 transitions. [2021-11-07 07:56:20,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-11-07 07:56:20,573 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:56:20,573 INFO L513 BasicCegarLoop]: trace histogram [15, 15, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:56:20,614 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2021-11-07 07:56:20,793 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:56:20,793 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [applyHanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2021-11-07 07:56:20,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:56:20,794 INFO L85 PathProgramCache]: Analyzing trace with hash 852091527, now seen corresponding path program 2 times [2021-11-07 07:56:20,794 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:56:20,794 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193909994] [2021-11-07 07:56:20,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:56:20,794 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:56:20,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:56:20,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-07 07:56:20,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:56:20,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-07 07:56:20,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:56:20,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-07 07:56:20,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:56:20,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-07 07:56:20,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:56:20,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-07 07:56:20,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:56:20,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-11-07 07:56:20,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:56:20,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-07 07:56:20,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:56:20,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-07 07:56:20,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:56:20,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-11-07 07:56:20,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:56:20,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-07 07:56:20,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:56:20,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-07 07:56:20,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:56:20,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-07 07:56:20,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:56:20,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-11-07 07:56:20,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:56:20,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-07 07:56:20,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:56:20,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-07 07:56:20,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:56:20,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-11-07 07:56:20,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:56:20,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-07 07:56:20,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:56:20,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-07 07:56:20,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:56:21,002 INFO L134 CoverageAnalysis]: Checked inductivity of 624 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 609 trivial. 0 not checked. [2021-11-07 07:56:21,003 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:56:21,003 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193909994] [2021-11-07 07:56:21,003 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193909994] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:56:21,003 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1606051782] [2021-11-07 07:56:21,004 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 07:56:21,004 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:56:21,004 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:56:21,005 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:56:21,029 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2021-11-07 07:56:21,681 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 07:56:21,681 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:56:21,683 INFO L263 TraceCheckSpWp]: Trace formula consists of 529 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-07 07:56:21,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:56:22,167 INFO L134 CoverageAnalysis]: Checked inductivity of 624 backedges. 50 proven. 226 refuted. 0 times theorem prover too weak. 348 trivial. 0 not checked. [2021-11-07 07:56:22,168 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1606051782] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:56:22,169 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:56:22,169 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 14] total 21 [2021-11-07 07:56:22,169 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736551846] [2021-11-07 07:56:22,170 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-07 07:56:22,170 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:56:22,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-07 07:56:22,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=366, Unknown=0, NotChecked=0, Total=420 [2021-11-07 07:56:22,171 INFO L87 Difference]: Start difference. First operand 672 states and 902 transitions. Second operand has 21 states, 20 states have (on average 3.75) internal successors, (75), 18 states have internal predecessors, (75), 8 states have call successors, (15), 3 states have call predecessors, (15), 11 states have return successors, (16), 11 states have call predecessors, (16), 7 states have call successors, (16) [2021-11-07 07:56:22,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:56:22,666 INFO L93 Difference]: Finished difference Result 895 states and 1358 transitions. [2021-11-07 07:56:22,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-07 07:56:22,667 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 3.75) internal successors, (75), 18 states have internal predecessors, (75), 8 states have call successors, (15), 3 states have call predecessors, (15), 11 states have return successors, (16), 11 states have call predecessors, (16), 7 states have call successors, (16) Word has length 156 [2021-11-07 07:56:22,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:56:22,675 INFO L225 Difference]: With dead ends: 895 [2021-11-07 07:56:22,675 INFO L226 Difference]: Without dead ends: 760 [2021-11-07 07:56:22,676 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=248, Invalid=1392, Unknown=0, NotChecked=0, Total=1640 [2021-11-07 07:56:22,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 760 states. [2021-11-07 07:56:22,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 760 to 730. [2021-11-07 07:56:22,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 730 states, 553 states have (on average 1.0506329113924051) internal successors, (581), 536 states have internal predecessors, (581), 103 states have call successors, (103), 71 states have call predecessors, (103), 71 states have return successors, (336), 122 states have call predecessors, (336), 94 states have call successors, (336) [2021-11-07 07:56:22,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 730 states to 730 states and 1020 transitions. [2021-11-07 07:56:22,772 INFO L78 Accepts]: Start accepts. Automaton has 730 states and 1020 transitions. Word has length 156 [2021-11-07 07:56:22,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:56:22,773 INFO L470 AbstractCegarLoop]: Abstraction has 730 states and 1020 transitions. [2021-11-07 07:56:22,773 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 3.75) internal successors, (75), 18 states have internal predecessors, (75), 8 states have call successors, (15), 3 states have call predecessors, (15), 11 states have return successors, (16), 11 states have call predecessors, (16), 7 states have call successors, (16) [2021-11-07 07:56:22,773 INFO L276 IsEmpty]: Start isEmpty. Operand 730 states and 1020 transitions. [2021-11-07 07:56:22,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-11-07 07:56:22,778 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:56:22,778 INFO L513 BasicCegarLoop]: trace histogram [19, 19, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1] [2021-11-07 07:56:22,824 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2021-11-07 07:56:22,994 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2021-11-07 07:56:22,994 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting applyHanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [applyHanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2021-11-07 07:56:22,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:56:22,995 INFO L85 PathProgramCache]: Analyzing trace with hash 2124250122, now seen corresponding path program 18 times [2021-11-07 07:56:22,995 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:56:22,995 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983504815] [2021-11-07 07:56:22,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:56:22,995 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:56:23,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:56:23,634 INFO L134 CoverageAnalysis]: Checked inductivity of 1125 backedges. 0 proven. 1125 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:56:23,634 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:56:23,634 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983504815] [2021-11-07 07:56:23,634 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983504815] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:56:23,634 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [523779340] [2021-11-07 07:56:23,634 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-07 07:56:23,634 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:56:23,635 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:56:23,635 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:56:23,650 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2021-11-07 07:56:24,453 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2021-11-07 07:56:24,454 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:56:24,457 INFO L263 TraceCheckSpWp]: Trace formula consists of 587 conjuncts, 77 conjunts are in the unsatisfiable core [2021-11-07 07:56:24,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:56:24,853 INFO L134 CoverageAnalysis]: Checked inductivity of 1125 backedges. 0 proven. 1125 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:56:24,853 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [523779340] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:56:24,858 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:56:24,858 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 41 [2021-11-07 07:56:24,858 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150923395] [2021-11-07 07:56:24,859 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2021-11-07 07:56:24,859 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:56:24,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2021-11-07 07:56:24,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=461, Invalid=1261, Unknown=0, NotChecked=0, Total=1722 [2021-11-07 07:56:24,861 INFO L87 Difference]: Start difference. First operand 730 states and 1020 transitions. Second operand has 42 states, 41 states have (on average 2.902439024390244) internal successors, (119), 42 states have internal predecessors, (119), 20 states have call successors, (20), 20 states have call predecessors, (20), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:56:25,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:56:25,771 INFO L93 Difference]: Finished difference Result 1004 states and 1355 transitions. [2021-11-07 07:56:25,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-11-07 07:56:25,772 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 41 states have (on average 2.902439024390244) internal successors, (119), 42 states have internal predecessors, (119), 20 states have call successors, (20), 20 states have call predecessors, (20), 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 07:56:25,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:56:25,780 INFO L225 Difference]: With dead ends: 1004 [2021-11-07 07:56:25,788 INFO L226 Difference]: Without dead ends: 1003 [2021-11-07 07:56:25,790 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 635 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1052, Invalid=2608, Unknown=0, NotChecked=0, Total=3660 [2021-11-07 07:56:25,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1003 states. [2021-11-07 07:56:25,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1003 to 771. [2021-11-07 07:56:25,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 771 states, 583 states have (on average 1.0497427101200687) internal successors, (612), 565 states have internal predecessors, (612), 110 states have call successors, (110), 75 states have call predecessors, (110), 75 states have return successors, (375), 130 states have call predecessors, (375), 100 states have call successors, (375) [2021-11-07 07:56:25,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 771 states to 771 states and 1097 transitions. [2021-11-07 07:56:25,836 INFO L78 Accepts]: Start accepts. Automaton has 771 states and 1097 transitions. Word has length 133 [2021-11-07 07:56:25,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:56:25,838 INFO L470 AbstractCegarLoop]: Abstraction has 771 states and 1097 transitions. [2021-11-07 07:56:25,838 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 41 states have (on average 2.902439024390244) internal successors, (119), 42 states have internal predecessors, (119), 20 states have call successors, (20), 20 states have call predecessors, (20), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:56:25,838 INFO L276 IsEmpty]: Start isEmpty. Operand 771 states and 1097 transitions. [2021-11-07 07:56:25,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-11-07 07:56:25,843 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:56:25,843 INFO L513 BasicCegarLoop]: trace histogram [20, 20, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1] [2021-11-07 07:56:25,882 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2021-11-07 07:56:26,058 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:56:26,058 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting applyHanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [applyHanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2021-11-07 07:56:26,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:56:26,059 INFO L85 PathProgramCache]: Analyzing trace with hash -2009917693, now seen corresponding path program 19 times [2021-11-07 07:56:26,059 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:56:26,059 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959203625] [2021-11-07 07:56:26,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:56:26,059 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:56:26,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:56:26,774 INFO L134 CoverageAnalysis]: Checked inductivity of 1254 backedges. 0 proven. 1254 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:56:26,774 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:56:26,774 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959203625] [2021-11-07 07:56:26,774 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959203625] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:56:26,774 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1678948427] [2021-11-07 07:56:26,774 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-07 07:56:26,775 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:56:26,775 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:56:26,776 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:56:26,796 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2021-11-07 07:56:27,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:56:27,529 INFO L263 TraceCheckSpWp]: Trace formula consists of 616 conjuncts, 81 conjunts are in the unsatisfiable core [2021-11-07 07:56:27,532 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:56:27,976 INFO L134 CoverageAnalysis]: Checked inductivity of 1254 backedges. 0 proven. 1254 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:56:27,978 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1678948427] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:56:27,978 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:56:27,978 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 43 [2021-11-07 07:56:27,978 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107443647] [2021-11-07 07:56:27,979 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2021-11-07 07:56:27,979 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:56:27,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2021-11-07 07:56:27,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=505, Invalid=1387, Unknown=0, NotChecked=0, Total=1892 [2021-11-07 07:56:27,980 INFO L87 Difference]: Start difference. First operand 771 states and 1097 transitions. Second operand has 44 states, 43 states have (on average 2.9069767441860463) internal successors, (125), 44 states have internal predecessors, (125), 21 states have call successors, (21), 21 states have call predecessors, (21), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:56:28,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:56:28,888 INFO L93 Difference]: Finished difference Result 1154 states and 1553 transitions. [2021-11-07 07:56:28,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-11-07 07:56:28,895 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 43 states have (on average 2.9069767441860463) internal successors, (125), 44 states have internal predecessors, (125), 21 states have call successors, (21), 21 states have call predecessors, (21), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2021-11-07 07:56:28,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:56:28,903 INFO L225 Difference]: With dead ends: 1154 [2021-11-07 07:56:28,904 INFO L226 Difference]: Without dead ends: 1153 [2021-11-07 07:56:28,906 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 699 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1157, Invalid=2875, Unknown=0, NotChecked=0, Total=4032 [2021-11-07 07:56:28,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1153 states. [2021-11-07 07:56:28,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1153 to 806. [2021-11-07 07:56:28,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 806 states, 609 states have (on average 1.0492610837438423) internal successors, (639), 590 states have internal predecessors, (639), 115 states have call successors, (115), 79 states have call predecessors, (115), 79 states have return successors, (414), 136 states have call predecessors, (414), 105 states have call successors, (414) [2021-11-07 07:56:28,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 806 states to 806 states and 1168 transitions. [2021-11-07 07:56:28,965 INFO L78 Accepts]: Start accepts. Automaton has 806 states and 1168 transitions. Word has length 140 [2021-11-07 07:56:28,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:56:28,966 INFO L470 AbstractCegarLoop]: Abstraction has 806 states and 1168 transitions. [2021-11-07 07:56:28,966 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 43 states have (on average 2.9069767441860463) internal successors, (125), 44 states have internal predecessors, (125), 21 states have call successors, (21), 21 states have call predecessors, (21), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:56:28,966 INFO L276 IsEmpty]: Start isEmpty. Operand 806 states and 1168 transitions. [2021-11-07 07:56:28,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-11-07 07:56:28,971 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:56:28,971 INFO L513 BasicCegarLoop]: trace histogram [21, 21, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1] [2021-11-07 07:56:29,008 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2021-11-07 07:56:29,186 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:56:29,186 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting applyHanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [applyHanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2021-11-07 07:56:29,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:56:29,187 INFO L85 PathProgramCache]: Analyzing trace with hash -67051030, now seen corresponding path program 20 times [2021-11-07 07:56:29,187 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:56:29,187 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681445964] [2021-11-07 07:56:29,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:56:29,187 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:56:29,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:56:29,900 INFO L134 CoverageAnalysis]: Checked inductivity of 1390 backedges. 0 proven. 1390 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:56:29,901 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:56:29,901 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681445964] [2021-11-07 07:56:29,901 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [681445964] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:56:29,901 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [384549082] [2021-11-07 07:56:29,901 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 07:56:29,902 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:56:29,902 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:56:29,910 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:56:29,911 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2021-11-07 07:56:30,679 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 07:56:30,679 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:56:30,683 INFO L263 TraceCheckSpWp]: Trace formula consists of 645 conjuncts, 85 conjunts are in the unsatisfiable core [2021-11-07 07:56:30,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:56:31,099 INFO L134 CoverageAnalysis]: Checked inductivity of 1390 backedges. 0 proven. 1390 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:56:31,099 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [384549082] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:56:31,099 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:56:31,099 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 45 [2021-11-07 07:56:31,100 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265852785] [2021-11-07 07:56:31,100 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2021-11-07 07:56:31,100 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:56:31,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2021-11-07 07:56:31,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=551, Invalid=1519, Unknown=0, NotChecked=0, Total=2070 [2021-11-07 07:56:31,102 INFO L87 Difference]: Start difference. First operand 806 states and 1168 transitions. Second operand has 46 states, 45 states have (on average 2.911111111111111) internal successors, (131), 46 states have internal predecessors, (131), 22 states have call successors, (22), 22 states have call predecessors, (22), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:56:32,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:56:32,207 INFO L93 Difference]: Finished difference Result 1195 states and 1634 transitions. [2021-11-07 07:56:32,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-11-07 07:56:32,219 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 45 states have (on average 2.911111111111111) internal successors, (131), 46 states have internal predecessors, (131), 22 states have call successors, (22), 22 states have call predecessors, (22), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 147 [2021-11-07 07:56:32,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:56:32,228 INFO L225 Difference]: With dead ends: 1195 [2021-11-07 07:56:32,228 INFO L226 Difference]: Without dead ends: 1194 [2021-11-07 07:56:32,231 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 766 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1267, Invalid=3155, Unknown=0, NotChecked=0, Total=4422 [2021-11-07 07:56:32,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1194 states. [2021-11-07 07:56:32,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1194 to 847. [2021-11-07 07:56:32,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 847 states, 639 states have (on average 1.0485133020344288) internal successors, (670), 619 states have internal predecessors, (670), 122 states have call successors, (122), 83 states have call predecessors, (122), 83 states have return successors, (457), 144 states have call predecessors, (457), 111 states have call successors, (457) [2021-11-07 07:56:32,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 847 states to 847 states and 1249 transitions. [2021-11-07 07:56:32,298 INFO L78 Accepts]: Start accepts. Automaton has 847 states and 1249 transitions. Word has length 147 [2021-11-07 07:56:32,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:56:32,299 INFO L470 AbstractCegarLoop]: Abstraction has 847 states and 1249 transitions. [2021-11-07 07:56:32,299 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 45 states have (on average 2.911111111111111) internal successors, (131), 46 states have internal predecessors, (131), 22 states have call successors, (22), 22 states have call predecessors, (22), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:56:32,299 INFO L276 IsEmpty]: Start isEmpty. Operand 847 states and 1249 transitions. [2021-11-07 07:56:32,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-11-07 07:56:32,305 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:56:32,305 INFO L513 BasicCegarLoop]: trace histogram [22, 22, 21, 21, 21, 21, 21, 1, 1, 1, 1, 1] [2021-11-07 07:56:32,342 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2021-11-07 07:56:32,518 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2021-11-07 07:56:32,518 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting applyHanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [applyHanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2021-11-07 07:56:32,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:56:32,519 INFO L85 PathProgramCache]: Analyzing trace with hash -2127866589, now seen corresponding path program 21 times [2021-11-07 07:56:32,519 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:56:32,519 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943293468] [2021-11-07 07:56:32,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:56:32,519 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:56:32,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:56:33,319 INFO L134 CoverageAnalysis]: Checked inductivity of 1533 backedges. 0 proven. 1533 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:56:33,319 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:56:33,319 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943293468] [2021-11-07 07:56:33,319 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943293468] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:56:33,319 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1289931620] [2021-11-07 07:56:33,319 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 07:56:33,319 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:56:33,320 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:56:33,322 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:56:33,331 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2021-11-07 07:56:34,197 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2021-11-07 07:56:34,197 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:56:34,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 674 conjuncts, 89 conjunts are in the unsatisfiable core [2021-11-07 07:56:34,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:56:34,695 INFO L134 CoverageAnalysis]: Checked inductivity of 1533 backedges. 0 proven. 1533 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:56:34,695 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1289931620] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:56:34,695 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:56:34,695 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45] total 47 [2021-11-07 07:56:34,696 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021928656] [2021-11-07 07:56:34,696 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2021-11-07 07:56:34,696 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:56:34,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-11-07 07:56:34,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=599, Invalid=1657, Unknown=0, NotChecked=0, Total=2256 [2021-11-07 07:56:34,698 INFO L87 Difference]: Start difference. First operand 847 states and 1249 transitions. Second operand has 48 states, 47 states have (on average 2.9148936170212765) internal successors, (137), 48 states have internal predecessors, (137), 23 states have call successors, (23), 23 states have call predecessors, (23), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:56:35,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:56:35,819 INFO L93 Difference]: Finished difference Result 1345 states and 1837 transitions. [2021-11-07 07:56:35,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-11-07 07:56:35,819 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 2.9148936170212765) internal successors, (137), 48 states have internal predecessors, (137), 23 states have call successors, (23), 23 states have call predecessors, (23), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 154 [2021-11-07 07:56:35,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:56:35,826 INFO L225 Difference]: With dead ends: 1345 [2021-11-07 07:56:35,826 INFO L226 Difference]: Without dead ends: 1344 [2021-11-07 07:56:35,828 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 836 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1382, Invalid=3448, Unknown=0, NotChecked=0, Total=4830 [2021-11-07 07:56:35,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1344 states. [2021-11-07 07:56:35,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1344 to 882. [2021-11-07 07:56:35,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 882 states, 665 states have (on average 1.0481203007518798) internal successors, (697), 644 states have internal predecessors, (697), 127 states have call successors, (127), 87 states have call predecessors, (127), 87 states have return successors, (501), 150 states have call predecessors, (501), 116 states have call successors, (501) [2021-11-07 07:56:35,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 882 states to 882 states and 1325 transitions. [2021-11-07 07:56:35,888 INFO L78 Accepts]: Start accepts. Automaton has 882 states and 1325 transitions. Word has length 154 [2021-11-07 07:56:35,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:56:35,889 INFO L470 AbstractCegarLoop]: Abstraction has 882 states and 1325 transitions. [2021-11-07 07:56:35,889 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 2.9148936170212765) internal successors, (137), 48 states have internal predecessors, (137), 23 states have call successors, (23), 23 states have call predecessors, (23), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:56:35,889 INFO L276 IsEmpty]: Start isEmpty. Operand 882 states and 1325 transitions. [2021-11-07 07:56:35,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-11-07 07:56:35,896 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:56:35,896 INFO L513 BasicCegarLoop]: trace histogram [23, 23, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1] [2021-11-07 07:56:35,933 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2021-11-07 07:56:36,122 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:56:36,122 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting applyHanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [applyHanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2021-11-07 07:56:36,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:56:36,123 INFO L85 PathProgramCache]: Analyzing trace with hash 17596362, now seen corresponding path program 22 times [2021-11-07 07:56:36,123 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:56:36,123 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311691128] [2021-11-07 07:56:36,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:56:36,123 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:56:36,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:56:36,950 INFO L134 CoverageAnalysis]: Checked inductivity of 1683 backedges. 0 proven. 1683 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:56:36,950 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:56:36,950 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311691128] [2021-11-07 07:56:36,950 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311691128] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:56:36,950 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1430998548] [2021-11-07 07:56:36,950 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-07 07:56:36,950 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:56:36,951 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:56:36,951 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:56:36,952 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2021-11-07 07:56:37,816 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-07 07:56:37,816 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:56:37,821 INFO L263 TraceCheckSpWp]: Trace formula consists of 703 conjuncts, 93 conjunts are in the unsatisfiable core [2021-11-07 07:56:37,823 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:56:38,278 INFO L134 CoverageAnalysis]: Checked inductivity of 1683 backedges. 0 proven. 1683 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:56:38,279 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1430998548] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:56:38,279 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:56:38,279 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47] total 49 [2021-11-07 07:56:38,279 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684683544] [2021-11-07 07:56:38,280 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2021-11-07 07:56:38,280 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:56:38,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2021-11-07 07:56:38,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=649, Invalid=1801, Unknown=0, NotChecked=0, Total=2450 [2021-11-07 07:56:38,281 INFO L87 Difference]: Start difference. First operand 882 states and 1325 transitions. Second operand has 50 states, 49 states have (on average 2.9183673469387754) internal successors, (143), 50 states have internal predecessors, (143), 24 states have call successors, (24), 24 states have call predecessors, (24), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:56:39,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:56:39,463 INFO L93 Difference]: Finished difference Result 1386 states and 1922 transitions. [2021-11-07 07:56:39,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-11-07 07:56:39,463 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 49 states have (on average 2.9183673469387754) internal successors, (143), 50 states have internal predecessors, (143), 24 states have call successors, (24), 24 states have call predecessors, (24), 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 07:56:39,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:56:39,473 INFO L225 Difference]: With dead ends: 1386 [2021-11-07 07:56:39,474 INFO L226 Difference]: Without dead ends: 1385 [2021-11-07 07:56:39,476 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 909 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1502, Invalid=3754, Unknown=0, NotChecked=0, Total=5256 [2021-11-07 07:56:39,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1385 states. [2021-11-07 07:56:39,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1385 to 923. [2021-11-07 07:56:39,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 923 states, 695 states have (on average 1.0474820143884893) internal successors, (728), 673 states have internal predecessors, (728), 134 states have call successors, (134), 91 states have call predecessors, (134), 91 states have return successors, (548), 158 states have call predecessors, (548), 122 states have call successors, (548) [2021-11-07 07:56:39,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 923 states to 923 states and 1410 transitions. [2021-11-07 07:56:39,575 INFO L78 Accepts]: Start accepts. Automaton has 923 states and 1410 transitions. Word has length 161 [2021-11-07 07:56:39,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:56:39,576 INFO L470 AbstractCegarLoop]: Abstraction has 923 states and 1410 transitions. [2021-11-07 07:56:39,577 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 49 states have (on average 2.9183673469387754) internal successors, (143), 50 states have internal predecessors, (143), 24 states have call successors, (24), 24 states have call predecessors, (24), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:56:39,577 INFO L276 IsEmpty]: Start isEmpty. Operand 923 states and 1410 transitions. [2021-11-07 07:56:39,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2021-11-07 07:56:39,585 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:56:39,585 INFO L513 BasicCegarLoop]: trace histogram [24, 24, 23, 23, 23, 23, 23, 1, 1, 1, 1, 1] [2021-11-07 07:56:39,630 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2021-11-07 07:56:39,810 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2021-11-07 07:56:39,810 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting applyHanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [applyHanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2021-11-07 07:56:39,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:56:39,811 INFO L85 PathProgramCache]: Analyzing trace with hash -951297213, now seen corresponding path program 23 times [2021-11-07 07:56:39,811 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:56:39,811 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98932246] [2021-11-07 07:56:39,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:56:39,811 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:56:39,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:56:40,741 INFO L134 CoverageAnalysis]: Checked inductivity of 1840 backedges. 0 proven. 1840 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:56:40,741 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:56:40,741 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98932246] [2021-11-07 07:56:40,742 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98932246] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:56:40,742 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1926213219] [2021-11-07 07:56:40,742 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-07 07:56:40,742 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:56:40,742 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:56:40,746 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:56:40,764 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2021-11-07 07:56:41,722 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2021-11-07 07:56:41,723 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:56:41,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 732 conjuncts, 97 conjunts are in the unsatisfiable core [2021-11-07 07:56:41,732 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:56:42,198 INFO L134 CoverageAnalysis]: Checked inductivity of 1840 backedges. 0 proven. 1840 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:56:42,199 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1926213219] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:56:42,199 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:56:42,199 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 51 [2021-11-07 07:56:42,199 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938325840] [2021-11-07 07:56:42,201 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2021-11-07 07:56:42,201 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:56:42,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2021-11-07 07:56:42,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=701, Invalid=1951, Unknown=0, NotChecked=0, Total=2652 [2021-11-07 07:56:42,204 INFO L87 Difference]: Start difference. First operand 923 states and 1410 transitions. Second operand has 52 states, 51 states have (on average 2.9215686274509802) internal successors, (149), 52 states have internal predecessors, (149), 25 states have call successors, (25), 25 states have call predecessors, (25), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:56:43,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:56:43,431 INFO L93 Difference]: Finished difference Result 1536 states and 2130 transitions. [2021-11-07 07:56:43,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-11-07 07:56:43,432 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 51 states have (on average 2.9215686274509802) internal successors, (149), 52 states have internal predecessors, (149), 25 states have call successors, (25), 25 states have call predecessors, (25), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 168 [2021-11-07 07:56:43,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:56:43,443 INFO L225 Difference]: With dead ends: 1536 [2021-11-07 07:56:43,443 INFO L226 Difference]: Without dead ends: 1535 [2021-11-07 07:56:43,445 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 985 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1627, Invalid=4073, Unknown=0, NotChecked=0, Total=5700 [2021-11-07 07:56:43,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1535 states. [2021-11-07 07:56:43,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1535 to 958. [2021-11-07 07:56:43,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 958 states, 721 states have (on average 1.0471567267683772) internal successors, (755), 698 states have internal predecessors, (755), 139 states have call successors, (139), 95 states have call predecessors, (139), 95 states have return successors, (597), 164 states have call predecessors, (597), 127 states have call successors, (597) [2021-11-07 07:56:43,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 958 states to 958 states and 1491 transitions. [2021-11-07 07:56:43,512 INFO L78 Accepts]: Start accepts. Automaton has 958 states and 1491 transitions. Word has length 168 [2021-11-07 07:56:43,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:56:43,513 INFO L470 AbstractCegarLoop]: Abstraction has 958 states and 1491 transitions. [2021-11-07 07:56:43,513 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 51 states have (on average 2.9215686274509802) internal successors, (149), 52 states have internal predecessors, (149), 25 states have call successors, (25), 25 states have call predecessors, (25), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:56:43,513 INFO L276 IsEmpty]: Start isEmpty. Operand 958 states and 1491 transitions. [2021-11-07 07:56:43,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-11-07 07:56:43,521 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:56:43,521 INFO L513 BasicCegarLoop]: trace histogram [25, 25, 24, 24, 24, 24, 24, 1, 1, 1, 1, 1] [2021-11-07 07:56:43,559 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2021-11-07 07:56:43,742 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2021-11-07 07:56:43,742 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting applyHanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [applyHanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2021-11-07 07:56:43,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:56:43,742 INFO L85 PathProgramCache]: Analyzing trace with hash 117331370, now seen corresponding path program 24 times [2021-11-07 07:56:43,743 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:56:43,743 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130491049] [2021-11-07 07:56:43,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:56:43,743 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:56:43,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:56:44,700 INFO L134 CoverageAnalysis]: Checked inductivity of 2004 backedges. 0 proven. 2004 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:56:44,700 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:56:44,700 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130491049] [2021-11-07 07:56:44,700 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130491049] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:56:44,701 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1945595252] [2021-11-07 07:56:44,701 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-07 07:56:44,701 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:56:44,701 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:56:44,701 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:56:44,702 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2021-11-07 07:56:45,749 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2021-11-07 07:56:45,749 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:56:45,754 INFO L263 TraceCheckSpWp]: Trace formula consists of 761 conjuncts, 101 conjunts are in the unsatisfiable core [2021-11-07 07:56:45,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:56:46,291 INFO L134 CoverageAnalysis]: Checked inductivity of 2004 backedges. 0 proven. 2004 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:56:46,292 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1945595252] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:56:46,292 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:56:46,292 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51] total 53 [2021-11-07 07:56:46,292 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140098294] [2021-11-07 07:56:46,294 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2021-11-07 07:56:46,294 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:56:46,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2021-11-07 07:56:46,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=755, Invalid=2107, Unknown=0, NotChecked=0, Total=2862 [2021-11-07 07:56:46,295 INFO L87 Difference]: Start difference. First operand 958 states and 1491 transitions. Second operand has 54 states, 53 states have (on average 2.9245283018867925) internal successors, (155), 54 states have internal predecessors, (155), 26 states have call successors, (26), 26 states have call predecessors, (26), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:56:47,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:56:47,534 INFO L93 Difference]: Finished difference Result 1577 states and 2219 transitions. [2021-11-07 07:56:47,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-11-07 07:56:47,534 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 53 states have (on average 2.9245283018867925) internal successors, (155), 54 states have internal predecessors, (155), 26 states have call successors, (26), 26 states have call predecessors, (26), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 175 [2021-11-07 07:56:47,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:56:47,545 INFO L225 Difference]: With dead ends: 1577 [2021-11-07 07:56:47,546 INFO L226 Difference]: Without dead ends: 1576 [2021-11-07 07:56:47,548 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1064 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1757, Invalid=4405, Unknown=0, NotChecked=0, Total=6162 [2021-11-07 07:56:47,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1576 states. [2021-11-07 07:56:47,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1576 to 999. [2021-11-07 07:56:47,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 999 states, 751 states have (on average 1.0466045272969373) internal successors, (786), 727 states have internal predecessors, (786), 146 states have call successors, (146), 99 states have call predecessors, (146), 99 states have return successors, (648), 172 states have call predecessors, (648), 133 states have call successors, (648) [2021-11-07 07:56:47,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 999 states to 999 states and 1580 transitions. [2021-11-07 07:56:47,618 INFO L78 Accepts]: Start accepts. Automaton has 999 states and 1580 transitions. Word has length 175 [2021-11-07 07:56:47,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:56:47,619 INFO L470 AbstractCegarLoop]: Abstraction has 999 states and 1580 transitions. [2021-11-07 07:56:47,619 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 53 states have (on average 2.9245283018867925) internal successors, (155), 54 states have internal predecessors, (155), 26 states have call successors, (26), 26 states have call predecessors, (26), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:56:47,620 INFO L276 IsEmpty]: Start isEmpty. Operand 999 states and 1580 transitions. [2021-11-07 07:56:47,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2021-11-07 07:56:47,627 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:56:47,627 INFO L513 BasicCegarLoop]: trace histogram [26, 26, 25, 25, 25, 25, 25, 1, 1, 1, 1, 1] [2021-11-07 07:56:47,666 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2021-11-07 07:56:47,842 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2021-11-07 07:56:47,842 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting applyHanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [applyHanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2021-11-07 07:56:47,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:56:47,843 INFO L85 PathProgramCache]: Analyzing trace with hash -1617417885, now seen corresponding path program 25 times [2021-11-07 07:56:47,843 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:56:47,843 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105093861] [2021-11-07 07:56:47,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:56:47,843 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:56:47,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:56:48,874 INFO L134 CoverageAnalysis]: Checked inductivity of 2175 backedges. 0 proven. 2175 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:56:48,875 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:56:48,875 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105093861] [2021-11-07 07:56:48,875 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105093861] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:56:48,875 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1385777663] [2021-11-07 07:56:48,875 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-07 07:56:48,875 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:56:48,875 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:56:48,876 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:56:48,877 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2021-11-07 07:56:49,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:56:49,925 INFO L263 TraceCheckSpWp]: Trace formula consists of 790 conjuncts, 105 conjunts are in the unsatisfiable core [2021-11-07 07:56:49,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:56:50,455 INFO L134 CoverageAnalysis]: Checked inductivity of 2175 backedges. 0 proven. 2175 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:56:50,456 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1385777663] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:56:50,456 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:56:50,456 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53] total 55 [2021-11-07 07:56:50,456 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184576536] [2021-11-07 07:56:50,457 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2021-11-07 07:56:50,457 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:56:50,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2021-11-07 07:56:50,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=811, Invalid=2269, Unknown=0, NotChecked=0, Total=3080 [2021-11-07 07:56:50,458 INFO L87 Difference]: Start difference. First operand 999 states and 1580 transitions. Second operand has 56 states, 55 states have (on average 2.9272727272727272) internal successors, (161), 56 states have internal predecessors, (161), 27 states have call successors, (27), 27 states have call predecessors, (27), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:56:51,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:56:51,847 INFO L93 Difference]: Finished difference Result 1727 states and 2432 transitions. [2021-11-07 07:56:51,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-11-07 07:56:51,851 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 55 states have (on average 2.9272727272727272) internal successors, (161), 56 states have internal predecessors, (161), 27 states have call successors, (27), 27 states have call predecessors, (27), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 182 [2021-11-07 07:56:51,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:56:51,861 INFO L225 Difference]: With dead ends: 1727 [2021-11-07 07:56:51,861 INFO L226 Difference]: Without dead ends: 1726 [2021-11-07 07:56:51,863 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1146 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1892, Invalid=4750, Unknown=0, NotChecked=0, Total=6642 [2021-11-07 07:56:51,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1726 states. [2021-11-07 07:56:51,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1726 to 1034. [2021-11-07 07:56:51,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1034 states, 777 states have (on average 1.0463320463320462) internal successors, (813), 752 states have internal predecessors, (813), 151 states have call successors, (151), 103 states have call predecessors, (151), 103 states have return successors, (702), 178 states have call predecessors, (702), 138 states have call successors, (702) [2021-11-07 07:56:51,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1034 states to 1034 states and 1666 transitions. [2021-11-07 07:56:51,937 INFO L78 Accepts]: Start accepts. Automaton has 1034 states and 1666 transitions. Word has length 182 [2021-11-07 07:56:51,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:56:51,938 INFO L470 AbstractCegarLoop]: Abstraction has 1034 states and 1666 transitions. [2021-11-07 07:56:51,938 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 55 states have (on average 2.9272727272727272) internal successors, (161), 56 states have internal predecessors, (161), 27 states have call successors, (27), 27 states have call predecessors, (27), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:56:51,938 INFO L276 IsEmpty]: Start isEmpty. Operand 1034 states and 1666 transitions. [2021-11-07 07:56:51,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-11-07 07:56:51,946 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:56:51,946 INFO L513 BasicCegarLoop]: trace histogram [27, 27, 26, 26, 26, 26, 26, 1, 1, 1, 1, 1] [2021-11-07 07:56:51,987 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2021-11-07 07:56:52,161 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2021-11-07 07:56:52,161 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting applyHanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [applyHanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2021-11-07 07:56:52,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:56:52,162 INFO L85 PathProgramCache]: Analyzing trace with hash -2104204406, now seen corresponding path program 26 times [2021-11-07 07:56:52,162 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:56:52,162 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638306305] [2021-11-07 07:56:52,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:56:52,162 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:56:52,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:56:53,208 INFO L134 CoverageAnalysis]: Checked inductivity of 2353 backedges. 0 proven. 2353 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:56:53,209 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:56:53,209 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638306305] [2021-11-07 07:56:53,209 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638306305] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:56:53,209 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1660569912] [2021-11-07 07:56:53,209 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 07:56:53,209 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:56:53,209 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:56:53,210 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:56:53,211 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2021-11-07 07:56:54,314 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 07:56:54,314 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:56:54,319 INFO L263 TraceCheckSpWp]: Trace formula consists of 819 conjuncts, 109 conjunts are in the unsatisfiable core [2021-11-07 07:56:54,322 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:56:54,879 INFO L134 CoverageAnalysis]: Checked inductivity of 2353 backedges. 0 proven. 2353 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:56:54,879 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1660569912] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:56:54,879 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:56:54,880 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 55] total 57 [2021-11-07 07:56:54,882 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668247647] [2021-11-07 07:56:54,883 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2021-11-07 07:56:54,883 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:56:54,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2021-11-07 07:56:54,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=869, Invalid=2437, Unknown=0, NotChecked=0, Total=3306 [2021-11-07 07:56:54,884 INFO L87 Difference]: Start difference. First operand 1034 states and 1666 transitions. Second operand has 58 states, 57 states have (on average 2.9298245614035086) internal successors, (167), 58 states have internal predecessors, (167), 28 states have call successors, (28), 28 states have call predecessors, (28), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:56:56,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:56:56,460 INFO L93 Difference]: Finished difference Result 1768 states and 2525 transitions. [2021-11-07 07:56:56,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-11-07 07:56:56,461 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 57 states have (on average 2.9298245614035086) internal successors, (167), 58 states have internal predecessors, (167), 28 states have call successors, (28), 28 states have call predecessors, (28), 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 07:56:56,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:56:56,471 INFO L225 Difference]: With dead ends: 1768 [2021-11-07 07:56:56,471 INFO L226 Difference]: Without dead ends: 1767 [2021-11-07 07:56:56,474 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1231 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=2032, Invalid=5108, Unknown=0, NotChecked=0, Total=7140 [2021-11-07 07:56:56,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1767 states. [2021-11-07 07:56:56,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1767 to 1075. [2021-11-07 07:56:56,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1075 states, 807 states have (on average 1.0458488228004956) internal successors, (844), 781 states have internal predecessors, (844), 158 states have call successors, (158), 107 states have call predecessors, (158), 107 states have return successors, (757), 186 states have call predecessors, (757), 144 states have call successors, (757) [2021-11-07 07:56:56,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1075 states to 1075 states and 1759 transitions. [2021-11-07 07:56:56,549 INFO L78 Accepts]: Start accepts. Automaton has 1075 states and 1759 transitions. Word has length 189 [2021-11-07 07:56:56,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:56:56,550 INFO L470 AbstractCegarLoop]: Abstraction has 1075 states and 1759 transitions. [2021-11-07 07:56:56,550 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 57 states have (on average 2.9298245614035086) internal successors, (167), 58 states have internal predecessors, (167), 28 states have call successors, (28), 28 states have call predecessors, (28), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:56:56,550 INFO L276 IsEmpty]: Start isEmpty. Operand 1075 states and 1759 transitions. [2021-11-07 07:56:56,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2021-11-07 07:56:56,559 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:56:56,560 INFO L513 BasicCegarLoop]: trace histogram [31, 31, 16, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:56:56,601 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2021-11-07 07:56:56,774 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:56:56,774 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [applyHanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2021-11-07 07:56:56,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:56:56,775 INFO L85 PathProgramCache]: Analyzing trace with hash -498290227, now seen corresponding path program 3 times [2021-11-07 07:56:56,775 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:56:56,775 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059001540] [2021-11-07 07:56:56,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:56:56,775 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:56:56,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:56:56,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-07 07:56:56,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:56:56,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-07 07:56:56,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:56:56,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-07 07:56:56,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:56:56,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-07 07:56:56,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:56:56,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-07 07:56:56,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:56:56,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-07 07:56:56,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:56:56,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-11-07 07:56:56,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:56:56,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-07 07:56:56,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:56:56,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-07 07:56:56,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:56:56,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-11-07 07:56:56,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:56:56,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-07 07:56:56,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:56:56,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-07 07:56:56,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:56:56,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-07 07:56:56,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:56:56,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-11-07 07:56:56,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:56:56,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-07 07:56:56,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:56:56,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-07 07:56:56,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:56:56,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-11-07 07:56:56,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:56:56,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-07 07:56:56,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:56:56,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-07 07:56:56,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:56:56,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-07 07:56:56,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:56:56,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-07 07:56:56,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:56:56,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-11-07 07:56:57,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:56:57,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-07 07:56:57,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:56:57,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-07 07:56:57,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:56:57,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-11-07 07:56:57,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:56:57,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-07 07:56:57,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:56:57,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-07 07:56:57,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:56:57,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-07 07:56:57,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:56:57,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-11-07 07:56:57,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:56:57,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-07 07:56:57,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:56:57,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-07 07:56:57,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:56:57,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2021-11-07 07:56:57,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:56:57,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-07 07:56:57,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:56:57,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-07 07:56:57,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:56:57,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-07 07:56:57,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:56:57,158 INFO L134 CoverageAnalysis]: Checked inductivity of 2771 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 2738 trivial. 0 not checked. [2021-11-07 07:56:57,158 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:56:57,158 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059001540] [2021-11-07 07:56:57,158 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059001540] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:56:57,159 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [757473939] [2021-11-07 07:56:57,159 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 07:56:57,159 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:56:57,159 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:56:57,160 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:56:57,181 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2021-11-07 07:56:58,438 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-11-07 07:56:58,438 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:56:58,439 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-07 07:56:58,445 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:56:59,032 INFO L134 CoverageAnalysis]: Checked inductivity of 2771 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 2738 trivial. 0 not checked. [2021-11-07 07:56:59,032 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [757473939] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:56:59,032 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:56:59,033 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 12 [2021-11-07 07:56:59,033 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012857716] [2021-11-07 07:56:59,034 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-07 07:56:59,034 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:56:59,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-07 07:56:59,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2021-11-07 07:56:59,035 INFO L87 Difference]: Start difference. First operand 1075 states and 1759 transitions. Second operand has 13 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 12 states have internal predecessors, (47), 1 states have call successors, (8), 2 states have call predecessors, (8), 6 states have return successors, (8), 6 states have call predecessors, (8), 1 states have call successors, (8) [2021-11-07 07:56:59,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:56:59,163 INFO L93 Difference]: Finished difference Result 1113 states and 1805 transitions. [2021-11-07 07:56:59,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-07 07:56:59,163 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 12 states have internal predecessors, (47), 1 states have call successors, (8), 2 states have call predecessors, (8), 6 states have return successors, (8), 6 states have call predecessors, (8), 1 states have call successors, (8) Word has length 296 [2021-11-07 07:56:59,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:56:59,170 INFO L225 Difference]: With dead ends: 1113 [2021-11-07 07:56:59,170 INFO L226 Difference]: Without dead ends: 1086 [2021-11-07 07:56:59,172 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 382 GetRequests, 360 SyntacticMatches, 3 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=101, Invalid=319, Unknown=0, NotChecked=0, Total=420 [2021-11-07 07:56:59,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1086 states. [2021-11-07 07:56:59,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1086 to 1082. [2021-11-07 07:56:59,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1082 states, 813 states have (on average 1.045510455104551) internal successors, (850), 787 states have internal predecessors, (850), 158 states have call successors, (158), 107 states have call predecessors, (158), 108 states have return successors, (758), 187 states have call predecessors, (758), 144 states have call successors, (758) [2021-11-07 07:56:59,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1082 states to 1082 states and 1766 transitions. [2021-11-07 07:56:59,236 INFO L78 Accepts]: Start accepts. Automaton has 1082 states and 1766 transitions. Word has length 296 [2021-11-07 07:56:59,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:56:59,237 INFO L470 AbstractCegarLoop]: Abstraction has 1082 states and 1766 transitions. [2021-11-07 07:56:59,237 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 12 states have internal predecessors, (47), 1 states have call successors, (8), 2 states have call predecessors, (8), 6 states have return successors, (8), 6 states have call predecessors, (8), 1 states have call successors, (8) [2021-11-07 07:56:59,237 INFO L276 IsEmpty]: Start isEmpty. Operand 1082 states and 1766 transitions. [2021-11-07 07:56:59,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2021-11-07 07:56:59,243 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:56:59,244 INFO L513 BasicCegarLoop]: trace histogram [28, 28, 27, 27, 27, 27, 27, 1, 1, 1, 1, 1] [2021-11-07 07:56:59,272 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2021-11-07 07:56:59,458 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2021-11-07 07:56:59,458 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting applyHanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [applyHanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2021-11-07 07:56:59,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:56:59,458 INFO L85 PathProgramCache]: Analyzing trace with hash 1670430595, now seen corresponding path program 27 times [2021-11-07 07:56:59,458 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:56:59,458 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342037250] [2021-11-07 07:56:59,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:56:59,459 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:56:59,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:57:00,622 INFO L134 CoverageAnalysis]: Checked inductivity of 2538 backedges. 0 proven. 2538 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:57:00,622 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:57:00,622 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342037250] [2021-11-07 07:57:00,623 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342037250] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:57:00,623 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1919131554] [2021-11-07 07:57:00,623 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 07:57:00,623 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:57:00,623 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:57:00,624 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:57:00,624 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2021-11-07 07:57:02,006 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 28 check-sat command(s) [2021-11-07 07:57:02,006 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:57:02,012 INFO L263 TraceCheckSpWp]: Trace formula consists of 848 conjuncts, 113 conjunts are in the unsatisfiable core [2021-11-07 07:57:02,016 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:57:02,612 INFO L134 CoverageAnalysis]: Checked inductivity of 2538 backedges. 0 proven. 2538 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:57:02,612 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1919131554] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:57:02,613 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:57:02,613 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 57] total 59 [2021-11-07 07:57:02,613 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366352381] [2021-11-07 07:57:02,614 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2021-11-07 07:57:02,614 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:57:02,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2021-11-07 07:57:02,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=929, Invalid=2611, Unknown=0, NotChecked=0, Total=3540 [2021-11-07 07:57:02,621 INFO L87 Difference]: Start difference. First operand 1082 states and 1766 transitions. Second operand has 60 states, 59 states have (on average 2.9322033898305087) internal successors, (173), 60 states have internal predecessors, (173), 29 states have call successors, (29), 29 states have call predecessors, (29), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:57:04,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:57:04,435 INFO L93 Difference]: Finished difference Result 1974 states and 2799 transitions. [2021-11-07 07:57:04,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-11-07 07:57:04,435 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 59 states have (on average 2.9322033898305087) internal successors, (173), 60 states have internal predecessors, (173), 29 states have call successors, (29), 29 states have call predecessors, (29), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 196 [2021-11-07 07:57:04,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:57:04,454 INFO L225 Difference]: With dead ends: 1974 [2021-11-07 07:57:04,455 INFO L226 Difference]: Without dead ends: 1973 [2021-11-07 07:57:04,457 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 308 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1319 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=2177, Invalid=5479, Unknown=0, NotChecked=0, Total=7656 [2021-11-07 07:57:04,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1973 states. [2021-11-07 07:57:04,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1973 to 1117. [2021-11-07 07:57:04,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1117 states, 839 states have (on average 1.0452920143027413) internal successors, (877), 812 states have internal predecessors, (877), 163 states have call successors, (163), 111 states have call predecessors, (163), 112 states have return successors, (817), 193 states have call predecessors, (817), 149 states have call successors, (817) [2021-11-07 07:57:04,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1117 states to 1117 states and 1857 transitions. [2021-11-07 07:57:04,542 INFO L78 Accepts]: Start accepts. Automaton has 1117 states and 1857 transitions. Word has length 196 [2021-11-07 07:57:04,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:57:04,544 INFO L470 AbstractCegarLoop]: Abstraction has 1117 states and 1857 transitions. [2021-11-07 07:57:04,544 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 59 states have (on average 2.9322033898305087) internal successors, (173), 60 states have internal predecessors, (173), 29 states have call successors, (29), 29 states have call predecessors, (29), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:57:04,544 INFO L276 IsEmpty]: Start isEmpty. Operand 1117 states and 1857 transitions. [2021-11-07 07:57:04,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2021-11-07 07:57:04,552 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:57:04,552 INFO L513 BasicCegarLoop]: trace histogram [29, 29, 28, 28, 28, 28, 28, 1, 1, 1, 1, 1] [2021-11-07 07:57:04,598 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2021-11-07 07:57:04,774 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:57:04,774 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting applyHanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [applyHanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2021-11-07 07:57:04,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:57:04,775 INFO L85 PathProgramCache]: Analyzing trace with hash -1005803158, now seen corresponding path program 28 times [2021-11-07 07:57:04,775 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:57:04,775 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336989509] [2021-11-07 07:57:04,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:57:04,775 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:57:04,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:57:06,015 INFO L134 CoverageAnalysis]: Checked inductivity of 2730 backedges. 0 proven. 2730 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:57:06,015 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:57:06,015 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336989509] [2021-11-07 07:57:06,015 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336989509] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:57:06,015 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1358971209] [2021-11-07 07:57:06,015 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-07 07:57:06,016 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:57:06,016 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:57:06,016 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:57:06,017 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2021-11-07 07:57:07,355 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-07 07:57:07,355 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:57:07,361 INFO L263 TraceCheckSpWp]: Trace formula consists of 877 conjuncts, 117 conjunts are in the unsatisfiable core [2021-11-07 07:57:07,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:57:07,936 INFO L134 CoverageAnalysis]: Checked inductivity of 2730 backedges. 0 proven. 2730 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:57:07,936 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1358971209] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:57:07,936 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:57:07,936 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 59] total 61 [2021-11-07 07:57:07,936 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991436617] [2021-11-07 07:57:07,937 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2021-11-07 07:57:07,937 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:57:07,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2021-11-07 07:57:07,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=991, Invalid=2791, Unknown=0, NotChecked=0, Total=3782 [2021-11-07 07:57:07,939 INFO L87 Difference]: Start difference. First operand 1117 states and 1857 transitions. Second operand has 62 states, 61 states have (on average 2.9344262295081966) internal successors, (179), 62 states have internal predecessors, (179), 30 states have call successors, (30), 30 states have call predecessors, (30), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:57:09,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:57:09,738 INFO L93 Difference]: Finished difference Result 2015 states and 2896 transitions. [2021-11-07 07:57:09,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-11-07 07:57:09,738 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 61 states have (on average 2.9344262295081966) internal successors, (179), 62 states have internal predecessors, (179), 30 states have call successors, (30), 30 states have call predecessors, (30), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 203 [2021-11-07 07:57:09,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:57:09,758 INFO L225 Difference]: With dead ends: 2015 [2021-11-07 07:57:09,758 INFO L226 Difference]: Without dead ends: 2014 [2021-11-07 07:57:09,761 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 319 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1410 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=2327, Invalid=5863, Unknown=0, NotChecked=0, Total=8190 [2021-11-07 07:57:09,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2014 states. [2021-11-07 07:57:09,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2014 to 1158. [2021-11-07 07:57:09,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1158 states, 869 states have (on average 1.04487917146145) internal successors, (908), 841 states have internal predecessors, (908), 170 states have call successors, (170), 115 states have call predecessors, (170), 116 states have return successors, (876), 201 states have call predecessors, (876), 155 states have call successors, (876) [2021-11-07 07:57:09,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1158 states to 1158 states and 1954 transitions. [2021-11-07 07:57:09,847 INFO L78 Accepts]: Start accepts. Automaton has 1158 states and 1954 transitions. Word has length 203 [2021-11-07 07:57:09,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:57:09,848 INFO L470 AbstractCegarLoop]: Abstraction has 1158 states and 1954 transitions. [2021-11-07 07:57:09,848 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 61 states have (on average 2.9344262295081966) internal successors, (179), 62 states have internal predecessors, (179), 30 states have call successors, (30), 30 states have call predecessors, (30), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:57:09,849 INFO L276 IsEmpty]: Start isEmpty. Operand 1158 states and 1954 transitions. [2021-11-07 07:57:09,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2021-11-07 07:57:09,856 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:57:09,857 INFO L513 BasicCegarLoop]: trace histogram [31, 31, 16, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:57:09,900 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2021-11-07 07:57:10,070 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:57:10,070 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [applyHanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2021-11-07 07:57:10,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:57:10,071 INFO L85 PathProgramCache]: Analyzing trace with hash -291553209, now seen corresponding path program 4 times [2021-11-07 07:57:10,071 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:57:10,071 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91705240] [2021-11-07 07:57:10,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:57:10,071 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:57:10,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:57:10,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-07 07:57:10,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:57:10,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-07 07:57:10,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:57:10,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-07 07:57:10,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:57:10,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-07 07:57:10,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:57:10,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-07 07:57:10,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:57:10,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-07 07:57:10,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:57:10,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-11-07 07:57:10,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:57:10,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-07 07:57:10,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:57:10,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-07 07:57:10,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:57:10,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-11-07 07:57:10,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:57:10,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-07 07:57:10,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:57:10,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-07 07:57:10,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:57:10,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-07 07:57:10,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:57:10,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-11-07 07:57:10,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:57:10,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-07 07:57:10,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:57:10,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-07 07:57:10,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:57:10,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-11-07 07:57:10,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:57:10,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-07 07:57:10,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:57:10,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-07 07:57:10,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:57:10,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-07 07:57:10,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:57:10,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-07 07:57:10,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:57:10,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-11-07 07:57:10,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:57:10,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-07 07:57:10,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:57:10,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-07 07:57:10,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:57:10,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-11-07 07:57:10,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:57:10,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-07 07:57:10,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:57:10,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-07 07:57:10,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:57:10,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-07 07:57:10,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:57:10,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-11-07 07:57:10,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:57:10,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-07 07:57:10,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:57:10,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-07 07:57:10,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:57:10,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2021-11-07 07:57:10,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:57:10,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-07 07:57:10,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:57:10,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-07 07:57:10,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:57:10,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-07 07:57:10,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:57:10,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-07 07:57:10,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:57:10,420 INFO L134 CoverageAnalysis]: Checked inductivity of 2818 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 2760 trivial. 0 not checked. [2021-11-07 07:57:10,420 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:57:10,420 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91705240] [2021-11-07 07:57:10,420 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91705240] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:57:10,420 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [492085458] [2021-11-07 07:57:10,421 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-07 07:57:10,421 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:57:10,421 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:57:10,422 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:57:10,446 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2021-11-07 07:57:11,834 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-07 07:57:11,834 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:57:11,837 INFO L263 TraceCheckSpWp]: Trace formula consists of 821 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-07 07:57:11,842 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:57:12,717 INFO L134 CoverageAnalysis]: Checked inductivity of 2818 backedges. 157 proven. 703 refuted. 0 times theorem prover too weak. 1958 trivial. 0 not checked. [2021-11-07 07:57:12,718 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [492085458] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:57:12,718 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:57:12,718 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 17] total 28 [2021-11-07 07:57:12,719 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761711597] [2021-11-07 07:57:12,719 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-11-07 07:57:12,720 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:57:12,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-11-07 07:57:12,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=663, Unknown=0, NotChecked=0, Total=756 [2021-11-07 07:57:12,720 INFO L87 Difference]: Start difference. First operand 1158 states and 1954 transitions. Second operand has 28 states, 27 states have (on average 3.7777777777777777) internal successors, (102), 25 states have internal predecessors, (102), 9 states have call successors, (16), 3 states have call predecessors, (16), 16 states have return successors, (22), 16 states have call predecessors, (22), 8 states have call successors, (22) [2021-11-07 07:57:13,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:57:13,520 INFO L93 Difference]: Finished difference Result 1462 states and 2821 transitions. [2021-11-07 07:57:13,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-11-07 07:57:13,520 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 3.7777777777777777) internal successors, (102), 25 states have internal predecessors, (102), 9 states have call successors, (16), 3 states have call predecessors, (16), 16 states have return successors, (22), 16 states have call predecessors, (22), 8 states have call successors, (22) Word has length 308 [2021-11-07 07:57:13,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:57:13,528 INFO L225 Difference]: With dead ends: 1462 [2021-11-07 07:57:13,529 INFO L226 Difference]: Without dead ends: 1315 [2021-11-07 07:57:13,531 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 418 GetRequests, 365 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 722 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=399, Invalid=2571, Unknown=0, NotChecked=0, Total=2970 [2021-11-07 07:57:13,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1315 states. [2021-11-07 07:57:13,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1315 to 1234. [2021-11-07 07:57:13,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1234 states, 917 states have (on average 1.0425299890948745) internal successors, (956), 889 states have internal predecessors, (956), 185 states have call successors, (185), 115 states have call predecessors, (185), 129 states have return successors, (1164), 229 states have call predecessors, (1164), 170 states have call successors, (1164) [2021-11-07 07:57:13,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1234 states to 1234 states and 2305 transitions. [2021-11-07 07:57:13,626 INFO L78 Accepts]: Start accepts. Automaton has 1234 states and 2305 transitions. Word has length 308 [2021-11-07 07:57:13,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:57:13,627 INFO L470 AbstractCegarLoop]: Abstraction has 1234 states and 2305 transitions. [2021-11-07 07:57:13,627 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 3.7777777777777777) internal successors, (102), 25 states have internal predecessors, (102), 9 states have call successors, (16), 3 states have call predecessors, (16), 16 states have return successors, (22), 16 states have call predecessors, (22), 8 states have call successors, (22) [2021-11-07 07:57:13,627 INFO L276 IsEmpty]: Start isEmpty. Operand 1234 states and 2305 transitions. [2021-11-07 07:57:13,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2021-11-07 07:57:13,636 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:57:13,636 INFO L513 BasicCegarLoop]: trace histogram [30, 30, 29, 29, 29, 29, 29, 1, 1, 1, 1, 1] [2021-11-07 07:57:13,676 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2021-11-07 07:57:13,858 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2021-11-07 07:57:13,858 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting applyHanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [applyHanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2021-11-07 07:57:13,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:57:13,859 INFO L85 PathProgramCache]: Analyzing trace with hash -1590157917, now seen corresponding path program 29 times [2021-11-07 07:57:13,859 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:57:13,859 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721290637] [2021-11-07 07:57:13,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:57:13,859 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:57:13,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:57:15,239 INFO L134 CoverageAnalysis]: Checked inductivity of 2929 backedges. 0 proven. 2929 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:57:15,239 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:57:15,239 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721290637] [2021-11-07 07:57:15,240 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721290637] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:57:15,240 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1909567887] [2021-11-07 07:57:15,240 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-07 07:57:15,240 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:57:15,240 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:57:15,241 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:57:15,242 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2021-11-07 07:57:16,803 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 30 check-sat command(s) [2021-11-07 07:57:16,803 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:57:16,811 INFO L263 TraceCheckSpWp]: Trace formula consists of 906 conjuncts, 121 conjunts are in the unsatisfiable core [2021-11-07 07:57:16,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:57:17,568 INFO L134 CoverageAnalysis]: Checked inductivity of 2929 backedges. 0 proven. 2929 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:57:17,568 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1909567887] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:57:17,569 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:57:17,569 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61] total 63 [2021-11-07 07:57:17,569 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269190208] [2021-11-07 07:57:17,570 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2021-11-07 07:57:17,570 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:57:17,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2021-11-07 07:57:17,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1055, Invalid=2977, Unknown=0, NotChecked=0, Total=4032 [2021-11-07 07:57:17,571 INFO L87 Difference]: Start difference. First operand 1234 states and 2305 transitions. Second operand has 64 states, 63 states have (on average 2.9365079365079363) internal successors, (185), 64 states have internal predecessors, (185), 31 states have call successors, (31), 31 states have call predecessors, (31), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:57:19,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:57:19,220 INFO L93 Difference]: Finished difference Result 1277 states and 2436 transitions. [2021-11-07 07:57:19,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-11-07 07:57:19,220 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 63 states have (on average 2.9365079365079363) internal successors, (185), 64 states have internal predecessors, (185), 31 states have call successors, (31), 31 states have call predecessors, (31), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 210 [2021-11-07 07:57:19,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:57:19,230 INFO L225 Difference]: With dead ends: 1277 [2021-11-07 07:57:19,230 INFO L226 Difference]: Without dead ends: 1276 [2021-11-07 07:57:19,233 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 238 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1504 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=2482, Invalid=6260, Unknown=0, NotChecked=0, Total=8742 [2021-11-07 07:57:19,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1276 states. [2021-11-07 07:57:19,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1276 to 1274. [2021-11-07 07:57:19,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1274 states, 946 states have (on average 1.0422832980972516) internal successors, (986), 917 states have internal predecessors, (986), 191 states have call successors, (191), 119 states have call predecessors, (191), 134 states have return successors, (1255), 237 states have call predecessors, (1255), 176 states have call successors, (1255) [2021-11-07 07:57:19,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1274 states to 1274 states and 2432 transitions. [2021-11-07 07:57:19,322 INFO L78 Accepts]: Start accepts. Automaton has 1274 states and 2432 transitions. Word has length 210 [2021-11-07 07:57:19,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:57:19,323 INFO L470 AbstractCegarLoop]: Abstraction has 1274 states and 2432 transitions. [2021-11-07 07:57:19,323 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 63 states have (on average 2.9365079365079363) internal successors, (185), 64 states have internal predecessors, (185), 31 states have call successors, (31), 31 states have call predecessors, (31), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:57:19,323 INFO L276 IsEmpty]: Start isEmpty. Operand 1274 states and 2432 transitions. [2021-11-07 07:57:19,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2021-11-07 07:57:19,333 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:57:19,333 INFO L513 BasicCegarLoop]: trace histogram [31, 31, 30, 30, 30, 30, 30, 1, 1, 1, 1, 1] [2021-11-07 07:57:19,377 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2021-11-07 07:57:19,546 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2021-11-07 07:57:19,546 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting applyHanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [applyHanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2021-11-07 07:57:19,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:57:19,547 INFO L85 PathProgramCache]: Analyzing trace with hash -685430966, now seen corresponding path program 30 times [2021-11-07 07:57:19,547 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:57:19,547 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369105521] [2021-11-07 07:57:19,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:57:19,547 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:57:19,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:57:20,951 INFO L134 CoverageAnalysis]: Checked inductivity of 3135 backedges. 0 proven. 3135 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:57:20,951 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:57:20,951 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369105521] [2021-11-07 07:57:20,951 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369105521] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:57:20,952 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1684837054] [2021-11-07 07:57:20,952 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-07 07:57:20,952 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:57:20,952 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:57:20,953 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:57:20,954 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2021-11-07 07:57:22,604 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2021-11-07 07:57:22,604 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:57:22,610 INFO L263 TraceCheckSpWp]: Trace formula consists of 935 conjuncts, 125 conjunts are in the unsatisfiable core [2021-11-07 07:57:22,613 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:57:23,274 INFO L134 CoverageAnalysis]: Checked inductivity of 3135 backedges. 0 proven. 3135 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:57:23,274 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1684837054] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:57:23,274 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:57:23,274 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 63] total 65 [2021-11-07 07:57:23,274 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308249155] [2021-11-07 07:57:23,275 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2021-11-07 07:57:23,275 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:57:23,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2021-11-07 07:57:23,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1121, Invalid=3169, Unknown=0, NotChecked=0, Total=4290 [2021-11-07 07:57:23,277 INFO L87 Difference]: Start difference. First operand 1274 states and 2432 transitions. Second operand has 66 states, 65 states have (on average 2.9384615384615387) internal successors, (191), 66 states have internal predecessors, (191), 32 states have call successors, (32), 32 states have call predecessors, (32), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:57:25,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:57:25,398 INFO L93 Difference]: Finished difference Result 1323 states and 2582 transitions. [2021-11-07 07:57:25,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-11-07 07:57:25,399 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 65 states have (on average 2.9384615384615387) internal successors, (191), 66 states have internal predecessors, (191), 32 states have call successors, (32), 32 states have call predecessors, (32), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 217 [2021-11-07 07:57:25,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:57:25,413 INFO L225 Difference]: With dead ends: 1323 [2021-11-07 07:57:25,413 INFO L226 Difference]: Without dead ends: 1322 [2021-11-07 07:57:25,416 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 246 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1601 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=2642, Invalid=6670, Unknown=0, NotChecked=0, Total=9312 [2021-11-07 07:57:25,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1322 states. [2021-11-07 07:57:25,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1322 to 1320. [2021-11-07 07:57:25,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1320 states, 979 states have (on average 1.0418794688457609) internal successors, (1020), 949 states have internal predecessors, (1020), 199 states have call successors, (199), 123 states have call predecessors, (199), 139 states have return successors, (1359), 247 states have call predecessors, (1359), 183 states have call successors, (1359) [2021-11-07 07:57:25,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1320 states to 1320 states and 2578 transitions. [2021-11-07 07:57:25,523 INFO L78 Accepts]: Start accepts. Automaton has 1320 states and 2578 transitions. Word has length 217 [2021-11-07 07:57:25,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:57:25,524 INFO L470 AbstractCegarLoop]: Abstraction has 1320 states and 2578 transitions. [2021-11-07 07:57:25,524 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 65 states have (on average 2.9384615384615387) internal successors, (191), 66 states have internal predecessors, (191), 32 states have call successors, (32), 32 states have call predecessors, (32), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:57:25,524 INFO L276 IsEmpty]: Start isEmpty. Operand 1320 states and 2578 transitions. [2021-11-07 07:57:25,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2021-11-07 07:57:25,535 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:57:25,536 INFO L513 BasicCegarLoop]: trace histogram [32, 32, 31, 31, 31, 31, 31, 1, 1, 1, 1, 1] [2021-11-07 07:57:25,586 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2021-11-07 07:57:25,750 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2021-11-07 07:57:25,750 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting applyHanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [applyHanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2021-11-07 07:57:25,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:57:25,751 INFO L85 PathProgramCache]: Analyzing trace with hash 990921667, now seen corresponding path program 31 times [2021-11-07 07:57:25,751 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:57:25,751 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738422040] [2021-11-07 07:57:25,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:57:25,751 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:57:25,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:57:27,068 INFO L134 CoverageAnalysis]: Checked inductivity of 3348 backedges. 0 proven. 3348 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:57:27,068 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:57:27,068 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738422040] [2021-11-07 07:57:27,068 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738422040] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:57:27,068 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2049529137] [2021-11-07 07:57:27,068 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-07 07:57:27,068 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:57:27,068 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:57:27,069 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:57:27,071 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2021-11-07 07:57:28,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:57:28,688 INFO L263 TraceCheckSpWp]: Trace formula consists of 964 conjuncts, 129 conjunts are in the unsatisfiable core [2021-11-07 07:57:28,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:57:29,419 INFO L134 CoverageAnalysis]: Checked inductivity of 3348 backedges. 0 proven. 3348 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:57:29,419 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2049529137] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:57:29,420 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:57:29,420 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65] total 67 [2021-11-07 07:57:29,420 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842021450] [2021-11-07 07:57:29,421 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2021-11-07 07:57:29,422 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:57:29,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2021-11-07 07:57:29,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1189, Invalid=3367, Unknown=0, NotChecked=0, Total=4556 [2021-11-07 07:57:29,423 INFO L87 Difference]: Start difference. First operand 1320 states and 2578 transitions. Second operand has 68 states, 67 states have (on average 2.9402985074626864) internal successors, (197), 68 states have internal predecessors, (197), 33 states have call successors, (33), 33 states have call predecessors, (33), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:57:31,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:57:31,645 INFO L93 Difference]: Finished difference Result 1492 states and 2860 transitions. [2021-11-07 07:57:31,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-11-07 07:57:31,646 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 67 states have (on average 2.9402985074626864) internal successors, (197), 68 states have internal predecessors, (197), 33 states have call successors, (33), 33 states have call predecessors, (33), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 224 [2021-11-07 07:57:31,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:57:31,654 INFO L225 Difference]: With dead ends: 1492 [2021-11-07 07:57:31,655 INFO L226 Difference]: Without dead ends: 1491 [2021-11-07 07:57:31,657 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 352 GetRequests, 254 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1701 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=2807, Invalid=7093, Unknown=0, NotChecked=0, Total=9900 [2021-11-07 07:57:31,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1491 states. [2021-11-07 07:57:31,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1491 to 1360. [2021-11-07 07:57:31,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1360 states, 1008 states have (on average 1.0416666666666667) internal successors, (1050), 977 states have internal predecessors, (1050), 205 states have call successors, (205), 127 states have call predecessors, (205), 144 states have return successors, (1460), 255 states have call predecessors, (1460), 189 states have call successors, (1460) [2021-11-07 07:57:31,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1360 states to 1360 states and 2715 transitions. [2021-11-07 07:57:31,768 INFO L78 Accepts]: Start accepts. Automaton has 1360 states and 2715 transitions. Word has length 224 [2021-11-07 07:57:31,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:57:31,768 INFO L470 AbstractCegarLoop]: Abstraction has 1360 states and 2715 transitions. [2021-11-07 07:57:31,769 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 67 states have (on average 2.9402985074626864) internal successors, (197), 68 states have internal predecessors, (197), 33 states have call successors, (33), 33 states have call predecessors, (33), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:57:31,769 INFO L276 IsEmpty]: Start isEmpty. Operand 1360 states and 2715 transitions. [2021-11-07 07:57:31,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2021-11-07 07:57:31,782 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:57:31,782 INFO L513 BasicCegarLoop]: trace histogram [33, 33, 32, 32, 32, 32, 32, 1, 1, 1, 1, 1] [2021-11-07 07:57:31,834 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2021-11-07 07:57:32,010 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2021-11-07 07:57:32,010 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting applyHanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [applyHanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2021-11-07 07:57:32,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:57:32,011 INFO L85 PathProgramCache]: Analyzing trace with hash 1662770474, now seen corresponding path program 32 times [2021-11-07 07:57:32,011 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:57:32,011 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924051313] [2021-11-07 07:57:32,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:57:32,011 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:57:32,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:57:33,734 INFO L134 CoverageAnalysis]: Checked inductivity of 3568 backedges. 0 proven. 3568 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:57:33,735 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:57:33,735 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924051313] [2021-11-07 07:57:33,735 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924051313] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:57:33,735 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1040306227] [2021-11-07 07:57:33,736 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 07:57:33,736 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:57:33,736 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:57:33,746 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:57:33,766 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2021-11-07 07:57:35,689 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 07:57:35,689 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:57:35,695 INFO L263 TraceCheckSpWp]: Trace formula consists of 993 conjuncts, 133 conjunts are in the unsatisfiable core [2021-11-07 07:57:35,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:57:36,421 INFO L134 CoverageAnalysis]: Checked inductivity of 3568 backedges. 0 proven. 3568 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:57:36,423 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1040306227] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:57:36,423 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:57:36,423 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 67] total 69 [2021-11-07 07:57:36,423 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342370866] [2021-11-07 07:57:36,424 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2021-11-07 07:57:36,424 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:57:36,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2021-11-07 07:57:36,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1259, Invalid=3571, Unknown=0, NotChecked=0, Total=4830 [2021-11-07 07:57:36,425 INFO L87 Difference]: Start difference. First operand 1360 states and 2715 transitions. Second operand has 70 states, 69 states have (on average 2.9420289855072466) internal successors, (203), 70 states have internal predecessors, (203), 34 states have call successors, (34), 34 states have call predecessors, (34), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:57:38,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:57:38,674 INFO L93 Difference]: Finished difference Result 1538 states and 3015 transitions. [2021-11-07 07:57:38,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-11-07 07:57:38,675 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 69 states have (on average 2.9420289855072466) internal successors, (203), 70 states have internal predecessors, (203), 34 states have call successors, (34), 34 states have call predecessors, (34), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 231 [2021-11-07 07:57:38,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:57:38,685 INFO L225 Difference]: With dead ends: 1538 [2021-11-07 07:57:38,685 INFO L226 Difference]: Without dead ends: 1537 [2021-11-07 07:57:38,687 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 363 GetRequests, 262 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1804 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=2977, Invalid=7529, Unknown=0, NotChecked=0, Total=10506 [2021-11-07 07:57:38,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1537 states. [2021-11-07 07:57:38,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1537 to 1406. [2021-11-07 07:57:38,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1406 states, 1041 states have (on average 1.0413064361191162) internal successors, (1084), 1009 states have internal predecessors, (1084), 213 states have call successors, (213), 131 states have call predecessors, (213), 149 states have return successors, (1573), 265 states have call predecessors, (1573), 196 states have call successors, (1573) [2021-11-07 07:57:38,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1406 states to 1406 states and 2870 transitions. [2021-11-07 07:57:38,789 INFO L78 Accepts]: Start accepts. Automaton has 1406 states and 2870 transitions. Word has length 231 [2021-11-07 07:57:38,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:57:38,790 INFO L470 AbstractCegarLoop]: Abstraction has 1406 states and 2870 transitions. [2021-11-07 07:57:38,790 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 69 states have (on average 2.9420289855072466) internal successors, (203), 70 states have internal predecessors, (203), 34 states have call successors, (34), 34 states have call predecessors, (34), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:57:38,790 INFO L276 IsEmpty]: Start isEmpty. Operand 1406 states and 2870 transitions. [2021-11-07 07:57:38,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2021-11-07 07:57:38,801 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:57:38,802 INFO L513 BasicCegarLoop]: trace histogram [34, 34, 33, 33, 33, 33, 33, 1, 1, 1, 1, 1] [2021-11-07 07:57:38,845 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0 [2021-11-07 07:57:39,019 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48,45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:57:39,020 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting applyHanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [applyHanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2021-11-07 07:57:39,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:57:39,020 INFO L85 PathProgramCache]: Analyzing trace with hash -2011483677, now seen corresponding path program 33 times [2021-11-07 07:57:39,020 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:57:39,020 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464507089] [2021-11-07 07:57:39,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:57:39,021 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:57:39,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:57:40,564 INFO L134 CoverageAnalysis]: Checked inductivity of 3795 backedges. 0 proven. 3795 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:57:40,564 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:57:40,564 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464507089] [2021-11-07 07:57:40,565 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464507089] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:57:40,565 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [314813497] [2021-11-07 07:57:40,565 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 07:57:40,565 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:57:40,565 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:57:40,568 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:57:40,569 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2021-11-07 07:57:42,606 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 34 check-sat command(s) [2021-11-07 07:57:42,606 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:57:42,615 INFO L263 TraceCheckSpWp]: Trace formula consists of 1022 conjuncts, 137 conjunts are in the unsatisfiable core [2021-11-07 07:57:42,619 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:57:43,504 INFO L134 CoverageAnalysis]: Checked inductivity of 3795 backedges. 0 proven. 3795 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:57:43,504 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [314813497] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:57:43,505 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:57:43,505 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 69] total 71 [2021-11-07 07:57:43,505 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470663647] [2021-11-07 07:57:43,506 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2021-11-07 07:57:43,506 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:57:43,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2021-11-07 07:57:43,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1331, Invalid=3781, Unknown=0, NotChecked=0, Total=5112 [2021-11-07 07:57:43,508 INFO L87 Difference]: Start difference. First operand 1406 states and 2870 transitions. Second operand has 72 states, 71 states have (on average 2.943661971830986) internal successors, (209), 72 states have internal predecessors, (209), 35 states have call successors, (35), 35 states have call predecessors, (35), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:57:46,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:57:46,092 INFO L93 Difference]: Finished difference Result 1707 states and 3303 transitions. [2021-11-07 07:57:46,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2021-11-07 07:57:46,093 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 71 states have (on average 2.943661971830986) internal successors, (209), 72 states have internal predecessors, (209), 35 states have call successors, (35), 35 states have call predecessors, (35), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 238 [2021-11-07 07:57:46,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:57:46,109 INFO L225 Difference]: With dead ends: 1707 [2021-11-07 07:57:46,109 INFO L226 Difference]: Without dead ends: 1706 [2021-11-07 07:57:46,113 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 374 GetRequests, 270 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1910 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=3152, Invalid=7978, Unknown=0, NotChecked=0, Total=11130 [2021-11-07 07:57:46,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1706 states. [2021-11-07 07:57:46,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1706 to 1446. [2021-11-07 07:57:46,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1446 states, 1070 states have (on average 1.0411214953271029) internal successors, (1114), 1037 states have internal predecessors, (1114), 219 states have call successors, (219), 135 states have call predecessors, (219), 154 states have return successors, (1684), 273 states have call predecessors, (1684), 202 states have call successors, (1684) [2021-11-07 07:57:46,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1446 states to 1446 states and 3017 transitions. [2021-11-07 07:57:46,244 INFO L78 Accepts]: Start accepts. Automaton has 1446 states and 3017 transitions. Word has length 238 [2021-11-07 07:57:46,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:57:46,245 INFO L470 AbstractCegarLoop]: Abstraction has 1446 states and 3017 transitions. [2021-11-07 07:57:46,245 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 71 states have (on average 2.943661971830986) internal successors, (209), 72 states have internal predecessors, (209), 35 states have call successors, (35), 35 states have call predecessors, (35), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:57:46,246 INFO L276 IsEmpty]: Start isEmpty. Operand 1446 states and 3017 transitions. [2021-11-07 07:57:46,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2021-11-07 07:57:46,302 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:57:46,302 INFO L513 BasicCegarLoop]: trace histogram [35, 35, 34, 34, 34, 34, 34, 1, 1, 1, 1, 1] [2021-11-07 07:57:46,359 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0 [2021-11-07 07:57:46,503 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49,46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:57:46,503 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting applyHanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [applyHanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2021-11-07 07:57:46,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:57:46,504 INFO L85 PathProgramCache]: Analyzing trace with hash -1968256246, now seen corresponding path program 34 times [2021-11-07 07:57:46,504 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:57:46,504 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352653069] [2021-11-07 07:57:46,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:57:46,505 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:57:46,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:57:48,348 INFO L134 CoverageAnalysis]: Checked inductivity of 4029 backedges. 0 proven. 4029 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:57:48,348 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:57:48,348 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352653069] [2021-11-07 07:57:48,349 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352653069] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:57:48,349 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1391885814] [2021-11-07 07:57:48,349 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-07 07:57:48,349 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:57:48,349 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:57:48,350 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:57:48,351 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2021-11-07 07:57:50,489 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-07 07:57:50,489 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:57:50,497 INFO L263 TraceCheckSpWp]: Trace formula consists of 1051 conjuncts, 141 conjunts are in the unsatisfiable core [2021-11-07 07:57:50,502 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:57:51,318 INFO L134 CoverageAnalysis]: Checked inductivity of 4029 backedges. 0 proven. 4029 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:57:51,318 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1391885814] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:57:51,318 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:57:51,318 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [71, 71] total 73 [2021-11-07 07:57:51,318 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609500639] [2021-11-07 07:57:51,319 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2021-11-07 07:57:51,319 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:57:51,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2021-11-07 07:57:51,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1405, Invalid=3997, Unknown=0, NotChecked=0, Total=5402 [2021-11-07 07:57:51,320 INFO L87 Difference]: Start difference. First operand 1446 states and 3017 transitions. Second operand has 74 states, 73 states have (on average 2.9452054794520546) internal successors, (215), 74 states have internal predecessors, (215), 36 states have call successors, (36), 36 states have call predecessors, (36), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:57:54,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:57:54,239 INFO L93 Difference]: Finished difference Result 1753 states and 3467 transitions. [2021-11-07 07:57:54,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2021-11-07 07:57:54,239 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 73 states have (on average 2.9452054794520546) internal successors, (215), 74 states have internal predecessors, (215), 36 states have call successors, (36), 36 states have call predecessors, (36), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 245 [2021-11-07 07:57:54,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:57:54,251 INFO L225 Difference]: With dead ends: 1753 [2021-11-07 07:57:54,251 INFO L226 Difference]: Without dead ends: 1752 [2021-11-07 07:57:54,253 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 385 GetRequests, 278 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2019 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=3332, Invalid=8440, Unknown=0, NotChecked=0, Total=11772 [2021-11-07 07:57:54,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1752 states. [2021-11-07 07:57:54,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1752 to 1492. [2021-11-07 07:57:54,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1492 states, 1103 states have (on average 1.0407978241160472) internal successors, (1148), 1069 states have internal predecessors, (1148), 227 states have call successors, (227), 139 states have call predecessors, (227), 159 states have return successors, (1806), 283 states have call predecessors, (1806), 209 states have call successors, (1806) [2021-11-07 07:57:54,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1492 states to 1492 states and 3181 transitions. [2021-11-07 07:57:54,353 INFO L78 Accepts]: Start accepts. Automaton has 1492 states and 3181 transitions. Word has length 245 [2021-11-07 07:57:54,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:57:54,354 INFO L470 AbstractCegarLoop]: Abstraction has 1492 states and 3181 transitions. [2021-11-07 07:57:54,354 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 73 states have (on average 2.9452054794520546) internal successors, (215), 74 states have internal predecessors, (215), 36 states have call successors, (36), 36 states have call predecessors, (36), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:57:54,354 INFO L276 IsEmpty]: Start isEmpty. Operand 1492 states and 3181 transitions. [2021-11-07 07:57:54,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2021-11-07 07:57:54,365 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:57:54,366 INFO L513 BasicCegarLoop]: trace histogram [36, 36, 35, 35, 35, 35, 35, 1, 1, 1, 1, 1] [2021-11-07 07:57:54,415 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2021-11-07 07:57:54,578 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable50 [2021-11-07 07:57:54,578 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting applyHanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [applyHanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2021-11-07 07:57:54,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:57:54,579 INFO L85 PathProgramCache]: Analyzing trace with hash 1943726083, now seen corresponding path program 35 times [2021-11-07 07:57:54,579 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:57:54,579 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6288579] [2021-11-07 07:57:54,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:57:54,579 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:57:54,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:57:56,338 INFO L134 CoverageAnalysis]: Checked inductivity of 4270 backedges. 0 proven. 4270 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:57:56,338 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:57:56,342 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6288579] [2021-11-07 07:57:56,342 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6288579] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:57:56,342 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [232388443] [2021-11-07 07:57:56,343 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-07 07:57:56,343 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:57:56,343 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:57:56,343 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:57:56,344 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2021-11-07 07:57:58,565 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 36 check-sat command(s) [2021-11-07 07:57:58,565 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:57:58,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 1080 conjuncts, 145 conjunts are in the unsatisfiable core [2021-11-07 07:57:58,579 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:57:59,464 INFO L134 CoverageAnalysis]: Checked inductivity of 4270 backedges. 0 proven. 4270 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:57:59,464 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [232388443] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:57:59,465 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:57:59,465 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [73, 73] total 75 [2021-11-07 07:57:59,465 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304625696] [2021-11-07 07:57:59,465 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2021-11-07 07:57:59,466 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:57:59,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2021-11-07 07:57:59,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1481, Invalid=4219, Unknown=0, NotChecked=0, Total=5700 [2021-11-07 07:57:59,467 INFO L87 Difference]: Start difference. First operand 1492 states and 3181 transitions. Second operand has 76 states, 75 states have (on average 2.9466666666666668) internal successors, (221), 76 states have internal predecessors, (221), 37 states have call successors, (37), 37 states have call predecessors, (37), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:58:02,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:58:02,419 INFO L93 Difference]: Finished difference Result 1922 states and 3765 transitions. [2021-11-07 07:58:02,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2021-11-07 07:58:02,419 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 75 states have (on average 2.9466666666666668) internal successors, (221), 76 states have internal predecessors, (221), 37 states have call successors, (37), 37 states have call predecessors, (37), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 252 [2021-11-07 07:58:02,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:58:02,434 INFO L225 Difference]: With dead ends: 1922 [2021-11-07 07:58:02,435 INFO L226 Difference]: Without dead ends: 1921 [2021-11-07 07:58:02,439 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 396 GetRequests, 286 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2131 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=3517, Invalid=8915, Unknown=0, NotChecked=0, Total=12432 [2021-11-07 07:58:02,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1921 states. [2021-11-07 07:58:02,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1921 to 1532. [2021-11-07 07:58:02,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1532 states, 1132 states have (on average 1.040636042402827) internal successors, (1178), 1097 states have internal predecessors, (1178), 233 states have call successors, (233), 143 states have call predecessors, (233), 164 states have return successors, (1927), 291 states have call predecessors, (1927), 215 states have call successors, (1927) [2021-11-07 07:58:02,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1532 states to 1532 states and 3338 transitions. [2021-11-07 07:58:02,579 INFO L78 Accepts]: Start accepts. Automaton has 1532 states and 3338 transitions. Word has length 252 [2021-11-07 07:58:02,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:58:02,580 INFO L470 AbstractCegarLoop]: Abstraction has 1532 states and 3338 transitions. [2021-11-07 07:58:02,580 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 76 states, 75 states have (on average 2.9466666666666668) internal successors, (221), 76 states have internal predecessors, (221), 37 states have call successors, (37), 37 states have call predecessors, (37), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:58:02,581 INFO L276 IsEmpty]: Start isEmpty. Operand 1532 states and 3338 transitions. [2021-11-07 07:58:02,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2021-11-07 07:58:02,592 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:58:02,593 INFO L513 BasicCegarLoop]: trace histogram [37, 37, 36, 36, 36, 36, 36, 1, 1, 1, 1, 1] [2021-11-07 07:58:02,641 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Forceful destruction successful, exit code 0 [2021-11-07 07:58:02,810 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:58:02,811 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting applyHanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [applyHanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2021-11-07 07:58:02,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:58:02,811 INFO L85 PathProgramCache]: Analyzing trace with hash -870584086, now seen corresponding path program 36 times [2021-11-07 07:58:02,811 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:58:02,811 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426824694] [2021-11-07 07:58:02,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:58:02,812 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:58:02,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:58:05,021 INFO L134 CoverageAnalysis]: Checked inductivity of 4518 backedges. 0 proven. 4518 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:58:05,022 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:58:05,022 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426824694] [2021-11-07 07:58:05,022 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426824694] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:58:05,022 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2003312029] [2021-11-07 07:58:05,022 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-07 07:58:05,022 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:58:05,022 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:58:05,023 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:58:05,024 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2021-11-07 07:58:07,426 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 37 check-sat command(s) [2021-11-07 07:58:07,426 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:58:07,434 INFO L263 TraceCheckSpWp]: Trace formula consists of 1109 conjuncts, 149 conjunts are in the unsatisfiable core [2021-11-07 07:58:07,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:58:08,222 INFO L134 CoverageAnalysis]: Checked inductivity of 4518 backedges. 0 proven. 4518 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:58:08,222 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2003312029] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:58:08,222 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:58:08,222 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [75, 75] total 77 [2021-11-07 07:58:08,223 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545366235] [2021-11-07 07:58:08,223 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 78 states [2021-11-07 07:58:08,223 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:58:08,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2021-11-07 07:58:08,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1559, Invalid=4447, Unknown=0, NotChecked=0, Total=6006 [2021-11-07 07:58:08,224 INFO L87 Difference]: Start difference. First operand 1532 states and 3338 transitions. Second operand has 78 states, 77 states have (on average 2.948051948051948) internal successors, (227), 78 states have internal predecessors, (227), 38 states have call successors, (38), 38 states have call predecessors, (38), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:58:11,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:58:11,324 INFO L93 Difference]: Finished difference Result 1968 states and 3938 transitions. [2021-11-07 07:58:11,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2021-11-07 07:58:11,324 INFO L78 Accepts]: Start accepts. Automaton has has 78 states, 77 states have (on average 2.948051948051948) internal successors, (227), 78 states have internal predecessors, (227), 38 states have call successors, (38), 38 states have call predecessors, (38), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 259 [2021-11-07 07:58:11,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:58:11,340 INFO L225 Difference]: With dead ends: 1968 [2021-11-07 07:58:11,341 INFO L226 Difference]: Without dead ends: 1967 [2021-11-07 07:58:11,345 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 407 GetRequests, 294 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2246 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=3707, Invalid=9403, Unknown=0, NotChecked=0, Total=13110 [2021-11-07 07:58:11,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1967 states. [2021-11-07 07:58:11,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1967 to 1578. [2021-11-07 07:58:11,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1578 states, 1165 states have (on average 1.040343347639485) internal successors, (1212), 1129 states have internal predecessors, (1212), 241 states have call successors, (241), 147 states have call predecessors, (241), 169 states have return successors, (2058), 301 states have call predecessors, (2058), 222 states have call successors, (2058) [2021-11-07 07:58:11,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1578 states to 1578 states and 3511 transitions. [2021-11-07 07:58:11,483 INFO L78 Accepts]: Start accepts. Automaton has 1578 states and 3511 transitions. Word has length 259 [2021-11-07 07:58:11,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:58:11,484 INFO L470 AbstractCegarLoop]: Abstraction has 1578 states and 3511 transitions. [2021-11-07 07:58:11,484 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 78 states, 77 states have (on average 2.948051948051948) internal successors, (227), 78 states have internal predecessors, (227), 38 states have call successors, (38), 38 states have call predecessors, (38), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:58:11,485 INFO L276 IsEmpty]: Start isEmpty. Operand 1578 states and 3511 transitions. [2021-11-07 07:58:11,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2021-11-07 07:58:11,498 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:58:11,498 INFO L513 BasicCegarLoop]: trace histogram [38, 38, 37, 37, 37, 37, 37, 1, 1, 1, 1, 1] [2021-11-07 07:58:11,552 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Forceful destruction successful, exit code 0 [2021-11-07 07:58:11,714 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:58:11,714 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting applyHanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [applyHanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2021-11-07 07:58:11,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:58:11,715 INFO L85 PathProgramCache]: Analyzing trace with hash -1638832605, now seen corresponding path program 37 times [2021-11-07 07:58:11,715 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:58:11,715 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856058537] [2021-11-07 07:58:11,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:58:11,715 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:58:11,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:58:13,692 INFO L134 CoverageAnalysis]: Checked inductivity of 4773 backedges. 0 proven. 4773 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:58:13,693 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:58:13,693 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856058537] [2021-11-07 07:58:13,693 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856058537] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:58:13,693 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [604415056] [2021-11-07 07:58:13,693 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-07 07:58:13,693 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:58:13,693 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:58:13,694 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:58:13,696 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2021-11-07 07:58:16,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:58:16,188 INFO L263 TraceCheckSpWp]: Trace formula consists of 1138 conjuncts, 153 conjunts are in the unsatisfiable core [2021-11-07 07:58:16,193 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:58:17,145 INFO L134 CoverageAnalysis]: Checked inductivity of 4773 backedges. 0 proven. 4773 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:58:17,145 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [604415056] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:58:17,145 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:58:17,146 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [77, 77] total 79 [2021-11-07 07:58:17,146 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023556927] [2021-11-07 07:58:17,147 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 80 states [2021-11-07 07:58:17,147 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:58:17,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2021-11-07 07:58:17,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1639, Invalid=4681, Unknown=0, NotChecked=0, Total=6320 [2021-11-07 07:58:17,150 INFO L87 Difference]: Start difference. First operand 1578 states and 3511 transitions. Second operand has 80 states, 79 states have (on average 2.949367088607595) internal successors, (233), 80 states have internal predecessors, (233), 39 states have call successors, (39), 39 states have call predecessors, (39), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:58:20,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:58:20,587 INFO L93 Difference]: Finished difference Result 2137 states and 4246 transitions. [2021-11-07 07:58:20,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2021-11-07 07:58:20,588 INFO L78 Accepts]: Start accepts. Automaton has has 80 states, 79 states have (on average 2.949367088607595) internal successors, (233), 80 states have internal predecessors, (233), 39 states have call successors, (39), 39 states have call predecessors, (39), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 266 [2021-11-07 07:58:20,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:58:20,688 INFO L225 Difference]: With dead ends: 2137 [2021-11-07 07:58:20,688 INFO L226 Difference]: Without dead ends: 2136 [2021-11-07 07:58:20,691 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 418 GetRequests, 302 SyntacticMatches, 0 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2364 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=3902, Invalid=9904, Unknown=0, NotChecked=0, Total=13806 [2021-11-07 07:58:20,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2136 states. [2021-11-07 07:58:20,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2136 to 1618. [2021-11-07 07:58:20,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1618 states, 1194 states have (on average 1.0402010050251256) internal successors, (1242), 1157 states have internal predecessors, (1242), 247 states have call successors, (247), 151 states have call predecessors, (247), 174 states have return successors, (2189), 309 states have call predecessors, (2189), 228 states have call successors, (2189) [2021-11-07 07:58:20,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1618 states to 1618 states and 3678 transitions. [2021-11-07 07:58:20,842 INFO L78 Accepts]: Start accepts. Automaton has 1618 states and 3678 transitions. Word has length 266 [2021-11-07 07:58:20,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:58:20,842 INFO L470 AbstractCegarLoop]: Abstraction has 1618 states and 3678 transitions. [2021-11-07 07:58:20,842 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 80 states, 79 states have (on average 2.949367088607595) internal successors, (233), 80 states have internal predecessors, (233), 39 states have call successors, (39), 39 states have call predecessors, (39), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:58:20,843 INFO L276 IsEmpty]: Start isEmpty. Operand 1618 states and 3678 transitions. [2021-11-07 07:58:20,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2021-11-07 07:58:20,857 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:58:20,857 INFO L513 BasicCegarLoop]: trace histogram [39, 39, 38, 38, 38, 38, 38, 1, 1, 1, 1, 1] [2021-11-07 07:58:20,915 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2021-11-07 07:58:21,070 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable53 [2021-11-07 07:58:21,070 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting applyHanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [applyHanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2021-11-07 07:58:21,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:58:21,071 INFO L85 PathProgramCache]: Analyzing trace with hash -517910838, now seen corresponding path program 38 times [2021-11-07 07:58:21,071 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:58:21,071 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332370486] [2021-11-07 07:58:21,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:58:21,071 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:58:21,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:58:23,114 INFO L134 CoverageAnalysis]: Checked inductivity of 5035 backedges. 0 proven. 5035 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:58:23,115 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:58:23,115 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332370486] [2021-11-07 07:58:23,115 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332370486] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:58:23,115 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1745883363] [2021-11-07 07:58:23,115 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 07:58:23,115 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:58:23,115 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:58:23,119 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:58:23,120 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2021-11-07 07:58:25,559 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 07:58:25,559 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:58:25,568 INFO L263 TraceCheckSpWp]: Trace formula consists of 1167 conjuncts, 157 conjunts are in the unsatisfiable core [2021-11-07 07:58:25,572 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:58:26,444 INFO L134 CoverageAnalysis]: Checked inductivity of 5035 backedges. 0 proven. 5035 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:58:26,445 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1745883363] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:58:26,445 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:58:26,445 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [79, 79] total 81 [2021-11-07 07:58:26,445 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146833984] [2021-11-07 07:58:26,446 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 82 states [2021-11-07 07:58:26,446 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:58:26,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2021-11-07 07:58:26,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1721, Invalid=4921, Unknown=0, NotChecked=0, Total=6642 [2021-11-07 07:58:26,448 INFO L87 Difference]: Start difference. First operand 1618 states and 3678 transitions. Second operand has 82 states, 81 states have (on average 2.950617283950617) internal successors, (239), 82 states have internal predecessors, (239), 40 states have call successors, (40), 40 states have call predecessors, (40), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:58:30,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:58:30,065 INFO L93 Difference]: Finished difference Result 2183 states and 4428 transitions. [2021-11-07 07:58:30,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2021-11-07 07:58:30,066 INFO L78 Accepts]: Start accepts. Automaton has has 82 states, 81 states have (on average 2.950617283950617) internal successors, (239), 82 states have internal predecessors, (239), 40 states have call successors, (40), 40 states have call predecessors, (40), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 273 [2021-11-07 07:58:30,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:58:30,079 INFO L225 Difference]: With dead ends: 2183 [2021-11-07 07:58:30,079 INFO L226 Difference]: Without dead ends: 2182 [2021-11-07 07:58:30,082 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 429 GetRequests, 310 SyntacticMatches, 0 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2485 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=4102, Invalid=10418, Unknown=0, NotChecked=0, Total=14520 [2021-11-07 07:58:30,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2182 states. [2021-11-07 07:58:30,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2182 to 1664. [2021-11-07 07:58:30,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1664 states, 1227 states have (on average 1.0399348003259983) internal successors, (1276), 1189 states have internal predecessors, (1276), 255 states have call successors, (255), 155 states have call predecessors, (255), 179 states have return successors, (2329), 319 states have call predecessors, (2329), 235 states have call successors, (2329) [2021-11-07 07:58:30,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1664 states to 1664 states and 3860 transitions. [2021-11-07 07:58:30,226 INFO L78 Accepts]: Start accepts. Automaton has 1664 states and 3860 transitions. Word has length 273 [2021-11-07 07:58:30,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:58:30,227 INFO L470 AbstractCegarLoop]: Abstraction has 1664 states and 3860 transitions. [2021-11-07 07:58:30,227 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 82 states, 81 states have (on average 2.950617283950617) internal successors, (239), 82 states have internal predecessors, (239), 40 states have call successors, (40), 40 states have call predecessors, (40), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:58:30,227 INFO L276 IsEmpty]: Start isEmpty. Operand 1664 states and 3860 transitions. [2021-11-07 07:58:30,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2021-11-07 07:58:30,242 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:58:30,243 INFO L513 BasicCegarLoop]: trace histogram [40, 40, 39, 39, 39, 39, 39, 1, 1, 1, 1, 1] [2021-11-07 07:58:30,294 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Forceful destruction successful, exit code 0 [2021-11-07 07:58:30,458 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable54 [2021-11-07 07:58:30,458 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting applyHanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [applyHanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2021-11-07 07:58:30,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:58:30,459 INFO L85 PathProgramCache]: Analyzing trace with hash 2080418883, now seen corresponding path program 39 times [2021-11-07 07:58:30,459 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:58:30,459 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107958774] [2021-11-07 07:58:30,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:58:30,459 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:58:30,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:58:32,889 INFO L134 CoverageAnalysis]: Checked inductivity of 5304 backedges. 0 proven. 5304 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:58:32,889 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:58:32,889 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107958774] [2021-11-07 07:58:32,890 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107958774] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:58:32,890 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1349034508] [2021-11-07 07:58:32,890 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 07:58:32,890 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:58:32,890 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:58:32,891 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:58:32,893 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2021-11-07 07:58:35,655 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 40 check-sat command(s) [2021-11-07 07:58:35,655 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:58:35,665 INFO L263 TraceCheckSpWp]: Trace formula consists of 1196 conjuncts, 161 conjunts are in the unsatisfiable core [2021-11-07 07:58:35,669 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:58:36,573 INFO L134 CoverageAnalysis]: Checked inductivity of 5304 backedges. 0 proven. 5304 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:58:36,574 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1349034508] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:58:36,574 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:58:36,574 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [81, 81] total 83 [2021-11-07 07:58:36,575 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094517616] [2021-11-07 07:58:36,575 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 84 states [2021-11-07 07:58:36,576 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:58:36,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2021-11-07 07:58:36,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1805, Invalid=5167, Unknown=0, NotChecked=0, Total=6972 [2021-11-07 07:58:36,578 INFO L87 Difference]: Start difference. First operand 1664 states and 3860 transitions. Second operand has 84 states, 83 states have (on average 2.9518072289156625) internal successors, (245), 84 states have internal predecessors, (245), 41 states have call successors, (41), 41 states have call predecessors, (41), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:58:40,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:58:40,402 INFO L93 Difference]: Finished difference Result 2352 states and 4746 transitions. [2021-11-07 07:58:40,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2021-11-07 07:58:40,403 INFO L78 Accepts]: Start accepts. Automaton has has 84 states, 83 states have (on average 2.9518072289156625) internal successors, (245), 84 states have internal predecessors, (245), 41 states have call successors, (41), 41 states have call predecessors, (41), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 280 [2021-11-07 07:58:40,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:58:40,424 INFO L225 Difference]: With dead ends: 2352 [2021-11-07 07:58:40,425 INFO L226 Difference]: Without dead ends: 2351 [2021-11-07 07:58:40,430 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 440 GetRequests, 318 SyntacticMatches, 0 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2609 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=4307, Invalid=10945, Unknown=0, NotChecked=0, Total=15252 [2021-11-07 07:58:40,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2351 states. [2021-11-07 07:58:40,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2351 to 1704. [2021-11-07 07:58:40,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1704 states, 1256 states have (on average 1.0398089171974523) internal successors, (1306), 1217 states have internal predecessors, (1306), 261 states have call successors, (261), 159 states have call predecessors, (261), 184 states have return successors, (2470), 327 states have call predecessors, (2470), 241 states have call successors, (2470) [2021-11-07 07:58:40,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1704 states to 1704 states and 4037 transitions. [2021-11-07 07:58:40,605 INFO L78 Accepts]: Start accepts. Automaton has 1704 states and 4037 transitions. Word has length 280 [2021-11-07 07:58:40,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:58:40,606 INFO L470 AbstractCegarLoop]: Abstraction has 1704 states and 4037 transitions. [2021-11-07 07:58:40,606 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 84 states, 83 states have (on average 2.9518072289156625) internal successors, (245), 84 states have internal predecessors, (245), 41 states have call successors, (41), 41 states have call predecessors, (41), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:58:40,606 INFO L276 IsEmpty]: Start isEmpty. Operand 1704 states and 4037 transitions. [2021-11-07 07:58:40,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2021-11-07 07:58:40,622 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:58:40,622 INFO L513 BasicCegarLoop]: trace histogram [41, 41, 40, 40, 40, 40, 40, 1, 1, 1, 1, 1] [2021-11-07 07:58:40,677 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Forceful destruction successful, exit code 0 [2021-11-07 07:58:40,850 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55,52 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:58:40,850 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting applyHanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [applyHanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2021-11-07 07:58:40,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:58:40,851 INFO L85 PathProgramCache]: Analyzing trace with hash -1627593558, now seen corresponding path program 40 times [2021-11-07 07:58:40,851 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:58:40,851 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790464411] [2021-11-07 07:58:40,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:58:40,851 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:58:41,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:58:43,317 INFO L134 CoverageAnalysis]: Checked inductivity of 5580 backedges. 0 proven. 5580 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:58:43,317 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:58:43,317 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790464411] [2021-11-07 07:58:43,317 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790464411] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:58:43,317 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1149957881] [2021-11-07 07:58:43,317 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-07 07:58:43,318 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:58:43,318 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:58:43,319 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:58:43,320 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2021-11-07 07:58:45,993 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-07 07:58:45,993 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:58:46,001 INFO L263 TraceCheckSpWp]: Trace formula consists of 1225 conjuncts, 165 conjunts are in the unsatisfiable core [2021-11-07 07:58:46,005 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:58:46,863 INFO L134 CoverageAnalysis]: Checked inductivity of 5580 backedges. 0 proven. 5580 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:58:46,864 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1149957881] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:58:46,864 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:58:46,864 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [83, 83] total 85 [2021-11-07 07:58:46,864 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417835781] [2021-11-07 07:58:46,865 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 86 states [2021-11-07 07:58:46,865 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:58:46,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2021-11-07 07:58:46,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1891, Invalid=5419, Unknown=0, NotChecked=0, Total=7310 [2021-11-07 07:58:46,866 INFO L87 Difference]: Start difference. First operand 1704 states and 4037 transitions. Second operand has 86 states, 85 states have (on average 2.9529411764705884) internal successors, (251), 86 states have internal predecessors, (251), 42 states have call successors, (42), 42 states have call predecessors, (42), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:58:50,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:58:50,747 INFO L93 Difference]: Finished difference Result 2398 states and 4937 transitions. [2021-11-07 07:58:50,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2021-11-07 07:58:50,747 INFO L78 Accepts]: Start accepts. Automaton has has 86 states, 85 states have (on average 2.9529411764705884) internal successors, (251), 86 states have internal predecessors, (251), 42 states have call successors, (42), 42 states have call predecessors, (42), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 287 [2021-11-07 07:58:50,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:58:50,761 INFO L225 Difference]: With dead ends: 2398 [2021-11-07 07:58:50,761 INFO L226 Difference]: Without dead ends: 2397 [2021-11-07 07:58:50,764 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 451 GetRequests, 326 SyntacticMatches, 0 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2736 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=4517, Invalid=11485, Unknown=0, NotChecked=0, Total=16002 [2021-11-07 07:58:50,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2397 states. [2021-11-07 07:58:50,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2397 to 1750. [2021-11-07 07:58:50,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1750 states, 1289 states have (on average 1.039565554693561) internal successors, (1340), 1249 states have internal predecessors, (1340), 269 states have call successors, (269), 163 states have call predecessors, (269), 189 states have return successors, (2619), 337 states have call predecessors, (2619), 248 states have call successors, (2619) [2021-11-07 07:58:50,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1750 states to 1750 states and 4228 transitions. [2021-11-07 07:58:50,880 INFO L78 Accepts]: Start accepts. Automaton has 1750 states and 4228 transitions. Word has length 287 [2021-11-07 07:58:50,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:58:50,880 INFO L470 AbstractCegarLoop]: Abstraction has 1750 states and 4228 transitions. [2021-11-07 07:58:50,880 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 86 states, 85 states have (on average 2.9529411764705884) internal successors, (251), 86 states have internal predecessors, (251), 42 states have call successors, (42), 42 states have call predecessors, (42), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:58:50,880 INFO L276 IsEmpty]: Start isEmpty. Operand 1750 states and 4228 transitions. [2021-11-07 07:58:50,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2021-11-07 07:58:50,896 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:58:50,897 INFO L513 BasicCegarLoop]: trace histogram [42, 42, 41, 41, 41, 41, 41, 1, 1, 1, 1, 1] [2021-11-07 07:58:50,935 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Forceful destruction successful, exit code 0 [2021-11-07 07:58:51,106 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2021-11-07 07:58:51,107 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting applyHanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [applyHanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2021-11-07 07:58:51,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:58:51,107 INFO L85 PathProgramCache]: Analyzing trace with hash 1978317411, now seen corresponding path program 41 times [2021-11-07 07:58:51,107 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:58:51,108 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392662002] [2021-11-07 07:58:51,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:58:51,108 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:58:51,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:58:53,675 INFO L134 CoverageAnalysis]: Checked inductivity of 5863 backedges. 0 proven. 5863 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:58:53,675 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:58:53,675 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392662002] [2021-11-07 07:58:53,676 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392662002] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:58:53,676 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2067896017] [2021-11-07 07:58:53,676 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-07 07:58:53,676 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:58:53,676 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:58:53,677 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:58:53,678 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2021-11-07 07:58:56,774 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 42 check-sat command(s) [2021-11-07 07:58:56,774 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:58:56,784 INFO L263 TraceCheckSpWp]: Trace formula consists of 1254 conjuncts, 169 conjunts are in the unsatisfiable core [2021-11-07 07:58:56,788 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:58:57,706 INFO L134 CoverageAnalysis]: Checked inductivity of 5863 backedges. 0 proven. 5863 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:58:57,706 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2067896017] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:58:57,707 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:58:57,707 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [85, 85] total 87 [2021-11-07 07:58:57,707 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85758339] [2021-11-07 07:58:57,707 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 88 states [2021-11-07 07:58:57,708 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:58:57,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2021-11-07 07:58:57,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1979, Invalid=5677, Unknown=0, NotChecked=0, Total=7656 [2021-11-07 07:58:57,709 INFO L87 Difference]: Start difference. First operand 1750 states and 4228 transitions. Second operand has 88 states, 87 states have (on average 2.954022988505747) internal successors, (257), 88 states have internal predecessors, (257), 43 states have call successors, (43), 43 states have call predecessors, (43), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:59:02,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:59:02,018 INFO L93 Difference]: Finished difference Result 2567 states and 5265 transitions. [2021-11-07 07:59:02,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2021-11-07 07:59:02,019 INFO L78 Accepts]: Start accepts. Automaton has has 88 states, 87 states have (on average 2.954022988505747) internal successors, (257), 88 states have internal predecessors, (257), 43 states have call successors, (43), 43 states have call predecessors, (43), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 294 [2021-11-07 07:59:02,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:59:02,031 INFO L225 Difference]: With dead ends: 2567 [2021-11-07 07:59:02,031 INFO L226 Difference]: Without dead ends: 2566 [2021-11-07 07:59:02,034 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 462 GetRequests, 334 SyntacticMatches, 0 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2866 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=4732, Invalid=12038, Unknown=0, NotChecked=0, Total=16770 [2021-11-07 07:59:02,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2566 states. [2021-11-07 07:59:02,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2566 to 1790. [2021-11-07 07:59:02,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1790 states, 1318 states have (on average 1.039453717754173) internal successors, (1370), 1277 states have internal predecessors, (1370), 275 states have call successors, (275), 167 states have call predecessors, (275), 194 states have return successors, (2770), 345 states have call predecessors, (2770), 254 states have call successors, (2770) [2021-11-07 07:59:02,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1790 states to 1790 states and 4415 transitions. [2021-11-07 07:59:02,155 INFO L78 Accepts]: Start accepts. Automaton has 1790 states and 4415 transitions. Word has length 294 [2021-11-07 07:59:02,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:59:02,155 INFO L470 AbstractCegarLoop]: Abstraction has 1790 states and 4415 transitions. [2021-11-07 07:59:02,155 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 88 states, 87 states have (on average 2.954022988505747) internal successors, (257), 88 states have internal predecessors, (257), 43 states have call successors, (43), 43 states have call predecessors, (43), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:59:02,155 INFO L276 IsEmpty]: Start isEmpty. Operand 1790 states and 4415 transitions. [2021-11-07 07:59:02,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2021-11-07 07:59:02,174 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:59:02,175 INFO L513 BasicCegarLoop]: trace histogram [43, 43, 42, 42, 42, 42, 42, 1, 1, 1, 1, 1] [2021-11-07 07:59:02,227 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Ended with exit code 0 [2021-11-07 07:59:02,390 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57,54 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:59:02,390 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting applyHanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [applyHanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2021-11-07 07:59:02,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:59:02,391 INFO L85 PathProgramCache]: Analyzing trace with hash -697519478, now seen corresponding path program 42 times [2021-11-07 07:59:02,391 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:59:02,391 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352872311] [2021-11-07 07:59:02,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:59:02,391 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:59:02,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:59:05,356 INFO L134 CoverageAnalysis]: Checked inductivity of 6153 backedges. 0 proven. 6153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:59:05,356 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:59:05,356 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352872311] [2021-11-07 07:59:05,357 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352872311] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:59:05,357 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1412169171] [2021-11-07 07:59:05,357 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-07 07:59:05,357 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:59:05,357 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:59:05,358 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:59:05,359 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2021-11-07 07:59:08,656 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 43 check-sat command(s) [2021-11-07 07:59:08,656 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:59:08,666 INFO L263 TraceCheckSpWp]: Trace formula consists of 1283 conjuncts, 173 conjunts are in the unsatisfiable core [2021-11-07 07:59:08,669 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:59:09,778 INFO L134 CoverageAnalysis]: Checked inductivity of 6153 backedges. 0 proven. 6153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:59:09,779 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1412169171] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:59:09,779 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:59:09,779 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [87, 87] total 89 [2021-11-07 07:59:09,779 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244700456] [2021-11-07 07:59:09,780 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 90 states [2021-11-07 07:59:09,780 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:59:09,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2021-11-07 07:59:09,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2069, Invalid=5941, Unknown=0, NotChecked=0, Total=8010 [2021-11-07 07:59:09,781 INFO L87 Difference]: Start difference. First operand 1790 states and 4415 transitions. Second operand has 90 states, 89 states have (on average 2.955056179775281) internal successors, (263), 90 states have internal predecessors, (263), 44 states have call successors, (44), 44 states have call predecessors, (44), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:59:14,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:59:14,134 INFO L93 Difference]: Finished difference Result 2613 states and 5465 transitions. [2021-11-07 07:59:14,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2021-11-07 07:59:14,134 INFO L78 Accepts]: Start accepts. Automaton has has 90 states, 89 states have (on average 2.955056179775281) internal successors, (263), 90 states have internal predecessors, (263), 44 states have call successors, (44), 44 states have call predecessors, (44), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 301 [2021-11-07 07:59:14,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:59:14,221 INFO L225 Difference]: With dead ends: 2613 [2021-11-07 07:59:14,221 INFO L226 Difference]: Without dead ends: 2612 [2021-11-07 07:59:14,224 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 473 GetRequests, 342 SyntacticMatches, 0 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2999 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=4952, Invalid=12604, Unknown=0, NotChecked=0, Total=17556 [2021-11-07 07:59:14,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2612 states. [2021-11-07 07:59:14,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2612 to 1836. [2021-11-07 07:59:14,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1836 states, 1351 states have (on average 1.0392301998519615) internal successors, (1404), 1309 states have internal predecessors, (1404), 283 states have call successors, (283), 171 states have call predecessors, (283), 199 states have return successors, (2928), 355 states have call predecessors, (2928), 261 states have call successors, (2928) [2021-11-07 07:59:14,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1836 states to 1836 states and 4615 transitions. [2021-11-07 07:59:14,336 INFO L78 Accepts]: Start accepts. Automaton has 1836 states and 4615 transitions. Word has length 301 [2021-11-07 07:59:14,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:59:14,336 INFO L470 AbstractCegarLoop]: Abstraction has 1836 states and 4615 transitions. [2021-11-07 07:59:14,337 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 90 states, 89 states have (on average 2.955056179775281) internal successors, (263), 90 states have internal predecessors, (263), 44 states have call successors, (44), 44 states have call predecessors, (44), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:59:14,337 INFO L276 IsEmpty]: Start isEmpty. Operand 1836 states and 4615 transitions. [2021-11-07 07:59:14,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2021-11-07 07:59:14,349 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:59:14,349 INFO L513 BasicCegarLoop]: trace histogram [44, 44, 43, 43, 43, 43, 43, 1, 1, 1, 1, 1] [2021-11-07 07:59:14,385 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Forceful destruction successful, exit code 0 [2021-11-07 07:59:14,550 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2021-11-07 07:59:14,550 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting applyHanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [applyHanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2021-11-07 07:59:14,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:59:14,551 INFO L85 PathProgramCache]: Analyzing trace with hash 160534659, now seen corresponding path program 43 times [2021-11-07 07:59:14,551 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:59:14,551 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235025435] [2021-11-07 07:59:14,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:59:14,551 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:59:14,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:59:17,354 INFO L134 CoverageAnalysis]: Checked inductivity of 6450 backedges. 0 proven. 6450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:59:17,354 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:59:17,354 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235025435] [2021-11-07 07:59:17,354 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235025435] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:59:17,354 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1061845366] [2021-11-07 07:59:17,354 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-07 07:59:17,355 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:59:17,355 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:59:17,355 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:59:17,356 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2021-11-07 07:59:20,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:59:20,501 INFO L263 TraceCheckSpWp]: Trace formula consists of 1312 conjuncts, 177 conjunts are in the unsatisfiable core [2021-11-07 07:59:20,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:59:21,585 INFO L134 CoverageAnalysis]: Checked inductivity of 6450 backedges. 0 proven. 6450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:59:21,586 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1061845366] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:59:21,586 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:59:21,586 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [89, 89] total 91 [2021-11-07 07:59:21,586 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251798389] [2021-11-07 07:59:21,587 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 92 states [2021-11-07 07:59:21,587 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:59:21,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2021-11-07 07:59:21,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2161, Invalid=6211, Unknown=0, NotChecked=0, Total=8372 [2021-11-07 07:59:21,588 INFO L87 Difference]: Start difference. First operand 1836 states and 4615 transitions. Second operand has 92 states, 91 states have (on average 2.956043956043956) internal successors, (269), 92 states have internal predecessors, (269), 45 states have call successors, (45), 45 states have call predecessors, (45), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:59:26,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:59:26,444 INFO L93 Difference]: Finished difference Result 2782 states and 5803 transitions. [2021-11-07 07:59:26,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2021-11-07 07:59:26,445 INFO L78 Accepts]: Start accepts. Automaton has has 92 states, 91 states have (on average 2.956043956043956) internal successors, (269), 92 states have internal predecessors, (269), 45 states have call successors, (45), 45 states have call predecessors, (45), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 308 [2021-11-07 07:59:26,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:59:26,458 INFO L225 Difference]: With dead ends: 2782 [2021-11-07 07:59:26,458 INFO L226 Difference]: Without dead ends: 2781 [2021-11-07 07:59:26,461 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 484 GetRequests, 350 SyntacticMatches, 0 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3135 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=5177, Invalid=13183, Unknown=0, NotChecked=0, Total=18360 [2021-11-07 07:59:26,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2781 states. [2021-11-07 07:59:26,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2781 to 1876. [2021-11-07 07:59:26,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1876 states, 1380 states have (on average 1.0391304347826087) internal successors, (1434), 1337 states have internal predecessors, (1434), 289 states have call successors, (289), 175 states have call predecessors, (289), 204 states have return successors, (3089), 363 states have call predecessors, (3089), 267 states have call successors, (3089) [2021-11-07 07:59:26,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1876 states to 1876 states and 4812 transitions. [2021-11-07 07:59:26,592 INFO L78 Accepts]: Start accepts. Automaton has 1876 states and 4812 transitions. Word has length 308 [2021-11-07 07:59:26,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:59:26,593 INFO L470 AbstractCegarLoop]: Abstraction has 1876 states and 4812 transitions. [2021-11-07 07:59:26,593 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 92 states, 91 states have (on average 2.956043956043956) internal successors, (269), 92 states have internal predecessors, (269), 45 states have call successors, (45), 45 states have call predecessors, (45), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:59:26,593 INFO L276 IsEmpty]: Start isEmpty. Operand 1876 states and 4812 transitions. [2021-11-07 07:59:26,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2021-11-07 07:59:26,606 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:59:26,606 INFO L513 BasicCegarLoop]: trace histogram [45, 45, 44, 44, 44, 44, 44, 1, 1, 1, 1, 1] [2021-11-07 07:59:26,642 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Ended with exit code 0 [2021-11-07 07:59:26,807 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 56 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2021-11-07 07:59:26,807 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting applyHanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [applyHanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2021-11-07 07:59:26,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:59:26,807 INFO L85 PathProgramCache]: Analyzing trace with hash 867088490, now seen corresponding path program 44 times [2021-11-07 07:59:26,808 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:59:26,808 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113205665] [2021-11-07 07:59:26,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:59:26,808 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:59:26,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:59:29,753 INFO L134 CoverageAnalysis]: Checked inductivity of 6754 backedges. 0 proven. 6754 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:59:29,753 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:59:29,753 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113205665] [2021-11-07 07:59:29,753 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113205665] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:59:29,753 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1779921608] [2021-11-07 07:59:29,753 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 07:59:29,754 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:59:29,754 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:59:29,754 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:59:29,755 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2021-11-07 07:59:32,784 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 07:59:32,784 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:59:32,794 INFO L263 TraceCheckSpWp]: Trace formula consists of 1341 conjuncts, 181 conjunts are in the unsatisfiable core [2021-11-07 07:59:32,798 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:59:33,757 INFO L134 CoverageAnalysis]: Checked inductivity of 6754 backedges. 0 proven. 6754 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:59:33,757 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1779921608] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:59:33,757 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:59:33,757 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [91, 91] total 93 [2021-11-07 07:59:33,757 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258549995] [2021-11-07 07:59:33,758 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 94 states [2021-11-07 07:59:33,758 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:59:33,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2021-11-07 07:59:33,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2255, Invalid=6487, Unknown=0, NotChecked=0, Total=8742 [2021-11-07 07:59:33,760 INFO L87 Difference]: Start difference. First operand 1876 states and 4812 transitions. Second operand has 94 states, 93 states have (on average 2.956989247311828) internal successors, (275), 94 states have internal predecessors, (275), 46 states have call successors, (46), 46 states have call predecessors, (46), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:59:38,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:59:38,883 INFO L93 Difference]: Finished difference Result 2828 states and 6012 transitions. [2021-11-07 07:59:38,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2021-11-07 07:59:38,884 INFO L78 Accepts]: Start accepts. Automaton has has 94 states, 93 states have (on average 2.956989247311828) internal successors, (275), 94 states have internal predecessors, (275), 46 states have call successors, (46), 46 states have call predecessors, (46), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 315 [2021-11-07 07:59:38,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:59:38,901 INFO L225 Difference]: With dead ends: 2828 [2021-11-07 07:59:38,901 INFO L226 Difference]: Without dead ends: 2827 [2021-11-07 07:59:38,905 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 495 GetRequests, 358 SyntacticMatches, 0 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3274 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=5407, Invalid=13775, Unknown=0, NotChecked=0, Total=19182 [2021-11-07 07:59:38,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2827 states. [2021-11-07 07:59:39,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2827 to 1922. [2021-11-07 07:59:39,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1922 states, 1413 states have (on average 1.0389242745930645) internal successors, (1468), 1369 states have internal predecessors, (1468), 297 states have call successors, (297), 179 states have call predecessors, (297), 209 states have return successors, (3256), 373 states have call predecessors, (3256), 274 states have call successors, (3256) [2021-11-07 07:59:39,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1922 states to 1922 states and 5021 transitions. [2021-11-07 07:59:39,083 INFO L78 Accepts]: Start accepts. Automaton has 1922 states and 5021 transitions. Word has length 315 [2021-11-07 07:59:39,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:59:39,083 INFO L470 AbstractCegarLoop]: Abstraction has 1922 states and 5021 transitions. [2021-11-07 07:59:39,083 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 94 states, 93 states have (on average 2.956989247311828) internal successors, (275), 94 states have internal predecessors, (275), 46 states have call successors, (46), 46 states have call predecessors, (46), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:59:39,084 INFO L276 IsEmpty]: Start isEmpty. Operand 1922 states and 5021 transitions. [2021-11-07 07:59:39,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2021-11-07 07:59:39,097 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:59:39,098 INFO L513 BasicCegarLoop]: trace histogram [46, 46, 45, 45, 45, 45, 45, 1, 1, 1, 1, 1] [2021-11-07 07:59:39,135 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Forceful destruction successful, exit code 0 [2021-11-07 07:59:39,298 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,57 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:59:39,299 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting applyHanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [applyHanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2021-11-07 07:59:39,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:59:39,299 INFO L85 PathProgramCache]: Analyzing trace with hash -386453853, now seen corresponding path program 45 times [2021-11-07 07:59:39,299 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:59:39,300 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893943146] [2021-11-07 07:59:39,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:59:39,300 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:59:39,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:59:42,204 INFO L134 CoverageAnalysis]: Checked inductivity of 7065 backedges. 0 proven. 7065 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:59:42,204 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:59:42,205 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893943146] [2021-11-07 07:59:42,205 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893943146] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:59:42,205 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [42046514] [2021-11-07 07:59:42,205 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 07:59:42,205 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:59:42,205 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:59:42,206 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:59:42,207 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2021-11-07 07:59:46,005 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 46 check-sat command(s) [2021-11-07 07:59:46,005 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:59:46,018 INFO L263 TraceCheckSpWp]: Trace formula consists of 1370 conjuncts, 185 conjunts are in the unsatisfiable core [2021-11-07 07:59:46,022 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:59:47,081 INFO L134 CoverageAnalysis]: Checked inductivity of 7065 backedges. 0 proven. 7065 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:59:47,082 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [42046514] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:59:47,082 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:59:47,082 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [93, 93] total 95 [2021-11-07 07:59:47,083 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979771774] [2021-11-07 07:59:47,083 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2021-11-07 07:59:47,084 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:59:47,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2021-11-07 07:59:47,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2351, Invalid=6769, Unknown=0, NotChecked=0, Total=9120 [2021-11-07 07:59:47,086 INFO L87 Difference]: Start difference. First operand 1922 states and 5021 transitions. Second operand has 96 states, 95 states have (on average 2.957894736842105) internal successors, (281), 96 states have internal predecessors, (281), 47 states have call successors, (47), 47 states have call predecessors, (47), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:59:52,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:59:52,350 INFO L93 Difference]: Finished difference Result 2997 states and 6360 transitions. [2021-11-07 07:59:52,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2021-11-07 07:59:52,351 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 95 states have (on average 2.957894736842105) internal successors, (281), 96 states have internal predecessors, (281), 47 states have call successors, (47), 47 states have call predecessors, (47), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 322 [2021-11-07 07:59:52,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:59:52,369 INFO L225 Difference]: With dead ends: 2997 [2021-11-07 07:59:52,369 INFO L226 Difference]: Without dead ends: 2996 [2021-11-07 07:59:52,374 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 506 GetRequests, 366 SyntacticMatches, 0 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3416 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=5642, Invalid=14380, Unknown=0, NotChecked=0, Total=20022 [2021-11-07 07:59:52,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2996 states. [2021-11-07 07:59:52,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2996 to 1962. [2021-11-07 07:59:52,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1962 states, 1442 states have (on average 1.0388349514563107) internal successors, (1498), 1397 states have internal predecessors, (1498), 303 states have call successors, (303), 183 states have call predecessors, (303), 214 states have return successors, (3427), 381 states have call predecessors, (3427), 280 states have call successors, (3427) [2021-11-07 07:59:52,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1962 states to 1962 states and 5228 transitions. [2021-11-07 07:59:52,534 INFO L78 Accepts]: Start accepts. Automaton has 1962 states and 5228 transitions. Word has length 322 [2021-11-07 07:59:52,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:59:52,534 INFO L470 AbstractCegarLoop]: Abstraction has 1962 states and 5228 transitions. [2021-11-07 07:59:52,534 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 95 states have (on average 2.957894736842105) internal successors, (281), 96 states have internal predecessors, (281), 47 states have call successors, (47), 47 states have call predecessors, (47), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:59:52,534 INFO L276 IsEmpty]: Start isEmpty. Operand 1962 states and 5228 transitions. [2021-11-07 07:59:52,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 577 [2021-11-07 07:59:52,552 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:59:52,552 INFO L513 BasicCegarLoop]: trace histogram [63, 63, 32, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:59:52,622 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Forceful destruction successful, exit code 0 [2021-11-07 07:59:52,753 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,58 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:59:52,753 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [applyHanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2021-11-07 07:59:52,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:59:52,754 INFO L85 PathProgramCache]: Analyzing trace with hash 747744525, now seen corresponding path program 5 times [2021-11-07 07:59:52,754 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:59:52,755 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819893538] [2021-11-07 07:59:52,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:59:52,755 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:59:52,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:59:53,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-07 07:59:53,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:59:53,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-07 07:59:53,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:59:53,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-07 07:59:53,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:59:53,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-07 07:59:53,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:59:53,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-07 07:59:53,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:59:53,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-07 07:59:53,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:59:53,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-07 07:59:53,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:59:53,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-11-07 07:59:53,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:59:53,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-07 07:59:53,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:59:53,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-07 07:59:53,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:59:53,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-11-07 07:59:53,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:59:53,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-07 07:59:53,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:59:53,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-07 07:59:53,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:59:53,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-07 07:59:53,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:59:53,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-11-07 07:59:53,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:59:53,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-07 07:59:53,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:59:53,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-07 07:59:53,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:59:53,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-11-07 07:59:53,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:59:53,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-07 07:59:53,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:59:53,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-07 07:59:53,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:59:53,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-07 07:59:53,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:59:53,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-07 07:59:53,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:59:53,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-11-07 07:59:53,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:59:53,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-07 07:59:53,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:59:53,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-07 07:59:53,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:59:53,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-11-07 07:59:53,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:59:53,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-07 07:59:53,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:59:53,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-07 07:59:53,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:59:53,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-07 07:59:53,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:59:53,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-11-07 07:59:53,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:59:53,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-07 07:59:53,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:59:53,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-07 07:59:53,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:59:53,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2021-11-07 07:59:53,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:59:53,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-07 07:59:53,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:59:53,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-07 07:59:53,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:59:53,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-07 07:59:53,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:59:53,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-07 07:59:53,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:59:53,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-07 07:59:53,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:59:53,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-11-07 07:59:53,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:59:53,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-07 07:59:53,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:59:53,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-07 07:59:53,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:59:53,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-11-07 07:59:53,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:59:53,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-07 07:59:53,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:59:53,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-07 07:59:53,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:59:53,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-07 07:59:53,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:59:53,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-11-07 07:59:53,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:59:53,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-07 07:59:53,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:59:53,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-07 07:59:53,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:59:53,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-11-07 07:59:53,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:59:53,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-07 07:59:53,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:59:53,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-07 07:59:53,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:59:53,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-07 07:59:53,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:59:53,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-07 07:59:53,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:59:53,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-11-07 07:59:53,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:59:53,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-07 07:59:53,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:59:53,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-07 07:59:53,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:59:53,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-11-07 07:59:53,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:59:53,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-07 07:59:53,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:59:53,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-07 07:59:53,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:59:53,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-07 07:59:53,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:59:53,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-11-07 07:59:53,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:59:53,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-07 07:59:53,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:59:53,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-07 07:59:53,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:59:53,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 509 [2021-11-07 07:59:53,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:59:53,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-07 07:59:53,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:59:53,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-07 07:59:53,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:59:53,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-07 07:59:53,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:59:53,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-07 07:59:53,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:59:53,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-07 07:59:53,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:59:53,682 INFO L134 CoverageAnalysis]: Checked inductivity of 11709 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 11619 trivial. 0 not checked. [2021-11-07 07:59:53,682 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:59:53,682 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819893538] [2021-11-07 07:59:53,683 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819893538] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:59:53,683 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [661338813] [2021-11-07 07:59:53,683 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-07 07:59:53,683 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:59:53,683 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:59:53,684 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:59:53,685 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2021-11-07 07:59:57,121 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 37 check-sat command(s) [2021-11-07 07:59:57,121 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:59:57,129 INFO L263 TraceCheckSpWp]: Trace formula consists of 1957 conjuncts, 28 conjunts are in the unsatisfiable core [2021-11-07 07:59:57,134 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:59:58,385 INFO L134 CoverageAnalysis]: Checked inductivity of 11709 backedges. 1293 proven. 950 refuted. 0 times theorem prover too weak. 9466 trivial. 0 not checked. [2021-11-07 07:59:58,385 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [661338813] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:59:58,385 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:59:58,386 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 19] total 32 [2021-11-07 07:59:58,386 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808573657] [2021-11-07 07:59:58,387 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-11-07 07:59:58,387 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:59:58,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-11-07 07:59:58,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=871, Unknown=0, NotChecked=0, Total=992 [2021-11-07 07:59:58,388 INFO L87 Difference]: Start difference. First operand 1962 states and 5228 transitions. Second operand has 32 states, 31 states have (on average 3.774193548387097) internal successors, (117), 29 states have internal predecessors, (117), 9 states have call successors, (17), 3 states have call predecessors, (17), 19 states have return successors, (26), 20 states have call predecessors, (26), 8 states have call successors, (26) [2021-11-07 07:59:59,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:59:59,336 INFO L93 Difference]: Finished difference Result 2375 states and 6736 transitions. [2021-11-07 07:59:59,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-11-07 07:59:59,337 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 3.774193548387097) internal successors, (117), 29 states have internal predecessors, (117), 9 states have call successors, (17), 3 states have call predecessors, (17), 19 states have return successors, (26), 20 states have call predecessors, (26), 8 states have call successors, (26) Word has length 576 [2021-11-07 07:59:59,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:59:59,359 INFO L225 Difference]: With dead ends: 2375 [2021-11-07 07:59:59,359 INFO L226 Difference]: Without dead ends: 2221 [2021-11-07 07:59:59,363 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 759 GetRequests, 697 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1038 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=519, Invalid=3513, Unknown=0, NotChecked=0, Total=4032 [2021-11-07 07:59:59,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2221 states. [2021-11-07 07:59:59,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2221 to 2065. [2021-11-07 07:59:59,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2065 states, 1507 states have (on average 1.037159920371599) internal successors, (1563), 1462 states have internal predecessors, (1563), 325 states have call successors, (325), 183 states have call predecessors, (325), 230 states have return successors, (4134), 419 states have call predecessors, (4134), 302 states have call successors, (4134) [2021-11-07 07:59:59,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2065 states to 2065 states and 6022 transitions. [2021-11-07 07:59:59,507 INFO L78 Accepts]: Start accepts. Automaton has 2065 states and 6022 transitions. Word has length 576 [2021-11-07 07:59:59,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:59:59,507 INFO L470 AbstractCegarLoop]: Abstraction has 2065 states and 6022 transitions. [2021-11-07 07:59:59,508 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 3.774193548387097) internal successors, (117), 29 states have internal predecessors, (117), 9 states have call successors, (17), 3 states have call predecessors, (17), 19 states have return successors, (26), 20 states have call predecessors, (26), 8 states have call successors, (26) [2021-11-07 07:59:59,508 INFO L276 IsEmpty]: Start isEmpty. Operand 2065 states and 6022 transitions. [2021-11-07 07:59:59,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2021-11-07 07:59:59,522 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:59:59,522 INFO L513 BasicCegarLoop]: trace histogram [47, 47, 46, 46, 46, 46, 46, 1, 1, 1, 1, 1] [2021-11-07 07:59:59,556 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Forceful destruction successful, exit code 0 [2021-11-07 07:59:59,726 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,59 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:59:59,726 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting applyHanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [applyHanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2021-11-07 07:59:59,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:59:59,727 INFO L85 PathProgramCache]: Analyzing trace with hash 511768138, now seen corresponding path program 46 times [2021-11-07 07:59:59,727 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:59:59,727 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247140772] [2021-11-07 07:59:59,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:59:59,728 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:59:59,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:00:02,245 INFO L134 CoverageAnalysis]: Checked inductivity of 7383 backedges. 0 proven. 7383 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:00:02,245 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:00:02,245 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247140772] [2021-11-07 08:00:02,245 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247140772] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:00:02,246 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [270197296] [2021-11-07 08:00:02,246 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-07 08:00:02,246 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:00:02,246 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:00:02,246 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:00:02,247 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2021-11-07 08:00:05,404 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-07 08:00:05,405 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 08:00:05,412 INFO L263 TraceCheckSpWp]: Trace formula consists of 1399 conjuncts, 189 conjunts are in the unsatisfiable core [2021-11-07 08:00:05,416 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:00:06,258 INFO L134 CoverageAnalysis]: Checked inductivity of 7383 backedges. 0 proven. 7383 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:00:06,258 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [270197296] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:00:06,258 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 08:00:06,259 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 95] total 97 [2021-11-07 08:00:06,259 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822855011] [2021-11-07 08:00:06,259 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 98 states [2021-11-07 08:00:06,260 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:00:06,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2021-11-07 08:00:06,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2449, Invalid=7057, Unknown=0, NotChecked=0, Total=9506 [2021-11-07 08:00:06,261 INFO L87 Difference]: Start difference. First operand 2065 states and 6022 transitions. Second operand has 98 states, 97 states have (on average 2.9587628865979383) internal successors, (287), 98 states have internal predecessors, (287), 48 states have call successors, (48), 48 states have call predecessors, (48), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:00:10,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:00:10,532 INFO L93 Difference]: Finished difference Result 2119 states and 6309 transitions. [2021-11-07 08:00:10,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2021-11-07 08:00:10,533 INFO L78 Accepts]: Start accepts. Automaton has has 98 states, 97 states have (on average 2.9587628865979383) internal successors, (287), 98 states have internal predecessors, (287), 48 states have call successors, (48), 48 states have call predecessors, (48), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 329 [2021-11-07 08:00:10,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:00:10,554 INFO L225 Difference]: With dead ends: 2119 [2021-11-07 08:00:10,554 INFO L226 Difference]: Without dead ends: 2118 [2021-11-07 08:00:10,558 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 517 GetRequests, 374 SyntacticMatches, 0 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3561 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=5882, Invalid=14998, Unknown=0, NotChecked=0, Total=20880 [2021-11-07 08:00:10,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2118 states. [2021-11-07 08:00:10,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2118 to 2116. [2021-11-07 08:00:10,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2116 states, 1543 states have (on average 1.0369410239792611) internal successors, (1600), 1497 states have internal predecessors, (1600), 334 states have call successors, (334), 187 states have call predecessors, (334), 236 states have return successors, (4371), 431 states have call predecessors, (4371), 310 states have call successors, (4371) [2021-11-07 08:00:10,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2116 states to 2116 states and 6305 transitions. [2021-11-07 08:00:10,765 INFO L78 Accepts]: Start accepts. Automaton has 2116 states and 6305 transitions. Word has length 329 [2021-11-07 08:00:10,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:00:10,765 INFO L470 AbstractCegarLoop]: Abstraction has 2116 states and 6305 transitions. [2021-11-07 08:00:10,765 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 98 states, 97 states have (on average 2.9587628865979383) internal successors, (287), 98 states have internal predecessors, (287), 48 states have call successors, (48), 48 states have call predecessors, (48), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:00:10,765 INFO L276 IsEmpty]: Start isEmpty. Operand 2116 states and 6305 transitions. [2021-11-07 08:00:10,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2021-11-07 08:00:10,781 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:00:10,781 INFO L513 BasicCegarLoop]: trace histogram [48, 48, 47, 47, 47, 47, 47, 1, 1, 1, 1, 1] [2021-11-07 08:00:10,814 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Ended with exit code 0 [2021-11-07 08:00:10,982 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,60 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:00:10,982 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting applyHanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [applyHanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2021-11-07 08:00:10,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:00:10,983 INFO L85 PathProgramCache]: Analyzing trace with hash 446534851, now seen corresponding path program 47 times [2021-11-07 08:00:10,983 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:00:10,983 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858569319] [2021-11-07 08:00:10,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:00:10,983 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:00:11,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:00:13,532 INFO L134 CoverageAnalysis]: Checked inductivity of 7708 backedges. 0 proven. 7708 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:00:13,532 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:00:13,532 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858569319] [2021-11-07 08:00:13,532 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858569319] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:00:13,532 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [599304396] [2021-11-07 08:00:13,532 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-07 08:00:13,532 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:00:13,532 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:00:13,533 INFO L229 MonitoredProcess]: Starting monitored process 61 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:00:13,535 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2021-11-07 08:00:17,055 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 48 check-sat command(s) [2021-11-07 08:00:17,056 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 08:00:17,065 INFO L263 TraceCheckSpWp]: Trace formula consists of 1428 conjuncts, 193 conjunts are in the unsatisfiable core [2021-11-07 08:00:17,068 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:00:17,922 INFO L134 CoverageAnalysis]: Checked inductivity of 7708 backedges. 0 proven. 7708 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:00:17,922 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [599304396] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:00:17,922 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 08:00:17,922 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 97] total 99 [2021-11-07 08:00:17,922 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915424982] [2021-11-07 08:00:17,923 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 100 states [2021-11-07 08:00:17,923 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:00:17,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2021-11-07 08:00:17,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2549, Invalid=7351, Unknown=0, NotChecked=0, Total=9900 [2021-11-07 08:00:17,924 INFO L87 Difference]: Start difference. First operand 2116 states and 6305 transitions. Second operand has 100 states, 99 states have (on average 2.95959595959596) internal successors, (293), 100 states have internal predecessors, (293), 49 states have call successors, (49), 49 states have call predecessors, (49), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:00:22,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:00:22,195 INFO L93 Difference]: Finished difference Result 2164 states and 6581 transitions. [2021-11-07 08:00:22,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2021-11-07 08:00:22,195 INFO L78 Accepts]: Start accepts. Automaton has has 100 states, 99 states have (on average 2.95959595959596) internal successors, (293), 100 states have internal predecessors, (293), 49 states have call successors, (49), 49 states have call predecessors, (49), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 336 [2021-11-07 08:00:22,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:00:22,226 INFO L225 Difference]: With dead ends: 2164 [2021-11-07 08:00:22,227 INFO L226 Difference]: Without dead ends: 2163 [2021-11-07 08:00:22,232 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 528 GetRequests, 382 SyntacticMatches, 0 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3709 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=6127, Invalid=15629, Unknown=0, NotChecked=0, Total=21756 [2021-11-07 08:00:22,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2163 states. [2021-11-07 08:00:22,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2163 to 2161. [2021-11-07 08:00:22,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2161 states, 1575 states have (on average 1.0368253968253969) internal successors, (1633), 1528 states have internal predecessors, (1633), 341 states have call successors, (341), 191 states have call predecessors, (341), 242 states have return successors, (4603), 441 states have call predecessors, (4603), 317 states have call successors, (4603) [2021-11-07 08:00:22,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2161 states to 2161 states and 6577 transitions. [2021-11-07 08:00:22,375 INFO L78 Accepts]: Start accepts. Automaton has 2161 states and 6577 transitions. Word has length 336 [2021-11-07 08:00:22,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:00:22,376 INFO L470 AbstractCegarLoop]: Abstraction has 2161 states and 6577 transitions. [2021-11-07 08:00:22,376 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 100 states, 99 states have (on average 2.95959595959596) internal successors, (293), 100 states have internal predecessors, (293), 49 states have call successors, (49), 49 states have call predecessors, (49), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:00:22,376 INFO L276 IsEmpty]: Start isEmpty. Operand 2161 states and 6577 transitions. [2021-11-07 08:00:22,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 344 [2021-11-07 08:00:22,391 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:00:22,391 INFO L513 BasicCegarLoop]: trace histogram [49, 49, 48, 48, 48, 48, 48, 1, 1, 1, 1, 1] [2021-11-07 08:00:22,423 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Forceful destruction successful, exit code 0 [2021-11-07 08:00:22,592 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,61 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:00:22,592 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting applyHanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [applyHanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2021-11-07 08:00:22,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:00:22,592 INFO L85 PathProgramCache]: Analyzing trace with hash -1709085654, now seen corresponding path program 48 times [2021-11-07 08:00:22,592 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:00:22,593 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614267262] [2021-11-07 08:00:22,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:00:22,593 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:00:22,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:00:25,306 INFO L134 CoverageAnalysis]: Checked inductivity of 8040 backedges. 0 proven. 8040 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:00:25,306 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:00:25,306 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614267262] [2021-11-07 08:00:25,307 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614267262] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:00:25,307 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [406896947] [2021-11-07 08:00:25,307 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-07 08:00:25,307 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:00:25,307 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:00:25,308 INFO L229 MonitoredProcess]: Starting monitored process 62 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:00:25,309 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2021-11-07 08:00:28,986 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 49 check-sat command(s) [2021-11-07 08:00:28,987 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 08:00:28,995 INFO L263 TraceCheckSpWp]: Trace formula consists of 1457 conjuncts, 197 conjunts are in the unsatisfiable core [2021-11-07 08:00:28,999 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:00:29,864 INFO L134 CoverageAnalysis]: Checked inductivity of 8040 backedges. 0 proven. 8040 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:00:29,864 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [406896947] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:00:29,864 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 08:00:29,864 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [99, 99] total 101 [2021-11-07 08:00:29,864 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131177462] [2021-11-07 08:00:29,865 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 102 states [2021-11-07 08:00:29,865 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:00:29,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2021-11-07 08:00:29,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2651, Invalid=7651, Unknown=0, NotChecked=0, Total=10302 [2021-11-07 08:00:29,866 INFO L87 Difference]: Start difference. First operand 2161 states and 6577 transitions. Second operand has 102 states, 101 states have (on average 2.9603960396039604) internal successors, (299), 102 states have internal predecessors, (299), 50 states have call successors, (50), 50 states have call predecessors, (50), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:00:34,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:00:34,570 INFO L93 Difference]: Finished difference Result 2215 states and 6880 transitions. [2021-11-07 08:00:34,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2021-11-07 08:00:34,571 INFO L78 Accepts]: Start accepts. Automaton has has 102 states, 101 states have (on average 2.9603960396039604) internal successors, (299), 102 states have internal predecessors, (299), 50 states have call successors, (50), 50 states have call predecessors, (50), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 343 [2021-11-07 08:00:34,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:00:34,590 INFO L225 Difference]: With dead ends: 2215 [2021-11-07 08:00:34,590 INFO L226 Difference]: Without dead ends: 2214 [2021-11-07 08:00:34,624 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 539 GetRequests, 390 SyntacticMatches, 0 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3860 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=6377, Invalid=16273, Unknown=0, NotChecked=0, Total=22650 [2021-11-07 08:00:34,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2214 states. [2021-11-07 08:00:34,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2214 to 2212. [2021-11-07 08:00:34,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2212 states, 1611 states have (on average 1.036623215394165) internal successors, (1670), 1563 states have internal predecessors, (1670), 350 states have call successors, (350), 195 states have call predecessors, (350), 248 states have return successors, (4856), 453 states have call predecessors, (4856), 325 states have call successors, (4856) [2021-11-07 08:00:34,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2212 states to 2212 states and 6876 transitions. [2021-11-07 08:00:34,774 INFO L78 Accepts]: Start accepts. Automaton has 2212 states and 6876 transitions. Word has length 343 [2021-11-07 08:00:34,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:00:34,775 INFO L470 AbstractCegarLoop]: Abstraction has 2212 states and 6876 transitions. [2021-11-07 08:00:34,775 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 102 states, 101 states have (on average 2.9603960396039604) internal successors, (299), 102 states have internal predecessors, (299), 50 states have call successors, (50), 50 states have call predecessors, (50), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:00:34,775 INFO L276 IsEmpty]: Start isEmpty. Operand 2212 states and 6876 transitions. [2021-11-07 08:00:34,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2021-11-07 08:00:34,791 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:00:34,791 INFO L513 BasicCegarLoop]: trace histogram [50, 50, 49, 49, 49, 49, 49, 1, 1, 1, 1, 1] [2021-11-07 08:00:34,822 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Forceful destruction successful, exit code 0 [2021-11-07 08:00:34,991 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65,62 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:00:34,992 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting applyHanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [applyHanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2021-11-07 08:00:34,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:00:34,992 INFO L85 PathProgramCache]: Analyzing trace with hash 428262115, now seen corresponding path program 49 times [2021-11-07 08:00:34,992 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:00:34,992 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481711652] [2021-11-07 08:00:34,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:00:34,998 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:00:35,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:00:37,847 INFO L134 CoverageAnalysis]: Checked inductivity of 8379 backedges. 0 proven. 8379 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:00:37,847 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:00:37,847 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481711652] [2021-11-07 08:00:37,847 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481711652] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:00:37,847 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2051246930] [2021-11-07 08:00:37,848 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-07 08:00:37,848 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:00:37,848 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:00:37,848 INFO L229 MonitoredProcess]: Starting monitored process 63 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:00:37,849 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2021-11-07 08:00:41,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:00:41,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 1486 conjuncts, 201 conjunts are in the unsatisfiable core [2021-11-07 08:00:41,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:00:42,370 INFO L134 CoverageAnalysis]: Checked inductivity of 8379 backedges. 0 proven. 8379 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:00:42,370 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2051246930] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:00:42,370 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 08:00:42,371 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [101, 101] total 103 [2021-11-07 08:00:42,371 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312648023] [2021-11-07 08:00:42,372 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 104 states [2021-11-07 08:00:42,372 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:00:42,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2021-11-07 08:00:42,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2755, Invalid=7957, Unknown=0, NotChecked=0, Total=10712 [2021-11-07 08:00:42,373 INFO L87 Difference]: Start difference. First operand 2212 states and 6876 transitions. Second operand has 104 states, 103 states have (on average 2.9611650485436893) internal successors, (305), 104 states have internal predecessors, (305), 51 states have call successors, (51), 51 states have call predecessors, (51), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:00:47,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:00:47,740 INFO L93 Difference]: Finished difference Result 2260 states and 7168 transitions. [2021-11-07 08:00:47,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2021-11-07 08:00:47,741 INFO L78 Accepts]: Start accepts. Automaton has has 104 states, 103 states have (on average 2.9611650485436893) internal successors, (305), 104 states have internal predecessors, (305), 51 states have call successors, (51), 51 states have call predecessors, (51), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 350 [2021-11-07 08:00:47,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:00:47,763 INFO L225 Difference]: With dead ends: 2260 [2021-11-07 08:00:47,763 INFO L226 Difference]: Without dead ends: 2259 [2021-11-07 08:00:47,767 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 550 GetRequests, 398 SyntacticMatches, 0 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4014 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=6632, Invalid=16930, Unknown=0, NotChecked=0, Total=23562 [2021-11-07 08:00:47,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2259 states. [2021-11-07 08:00:47,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2259 to 2257. [2021-11-07 08:00:47,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2257 states, 1643 states have (on average 1.0365185636031649) internal successors, (1703), 1594 states have internal predecessors, (1703), 357 states have call successors, (357), 199 states have call predecessors, (357), 254 states have return successors, (5104), 463 states have call predecessors, (5104), 332 states have call successors, (5104) [2021-11-07 08:00:47,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2257 states to 2257 states and 7164 transitions. [2021-11-07 08:00:47,963 INFO L78 Accepts]: Start accepts. Automaton has 2257 states and 7164 transitions. Word has length 350 [2021-11-07 08:00:47,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:00:47,964 INFO L470 AbstractCegarLoop]: Abstraction has 2257 states and 7164 transitions. [2021-11-07 08:00:47,964 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 104 states, 103 states have (on average 2.9611650485436893) internal successors, (305), 104 states have internal predecessors, (305), 51 states have call successors, (51), 51 states have call predecessors, (51), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:00:47,964 INFO L276 IsEmpty]: Start isEmpty. Operand 2257 states and 7164 transitions. [2021-11-07 08:00:47,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 358 [2021-11-07 08:00:47,986 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:00:47,986 INFO L513 BasicCegarLoop]: trace histogram [51, 51, 50, 50, 50, 50, 50, 1, 1, 1, 1, 1] [2021-11-07 08:00:48,022 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Ended with exit code 0 [2021-11-07 08:00:48,186 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable66 [2021-11-07 08:00:48,187 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting applyHanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [applyHanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2021-11-07 08:00:48,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:00:48,187 INFO L85 PathProgramCache]: Analyzing trace with hash 625875466, now seen corresponding path program 50 times [2021-11-07 08:00:48,187 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:00:48,187 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841039377] [2021-11-07 08:00:48,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:00:48,188 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:00:48,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:00:51,491 INFO L134 CoverageAnalysis]: Checked inductivity of 8725 backedges. 0 proven. 8725 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:00:51,491 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:00:51,491 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841039377] [2021-11-07 08:00:51,492 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841039377] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:00:51,492 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [131940873] [2021-11-07 08:00:51,492 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 08:00:51,492 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:00:51,492 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:00:51,493 INFO L229 MonitoredProcess]: Starting monitored process 64 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:00:51,494 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2021-11-07 08:00:55,490 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 08:00:55,490 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 08:00:55,502 INFO L263 TraceCheckSpWp]: Trace formula consists of 1515 conjuncts, 205 conjunts are in the unsatisfiable core [2021-11-07 08:00:55,507 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:00:56,633 INFO L134 CoverageAnalysis]: Checked inductivity of 8725 backedges. 0 proven. 8725 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:00:56,633 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [131940873] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:00:56,633 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 08:00:56,633 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [103, 103] total 105 [2021-11-07 08:00:56,633 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962500995] [2021-11-07 08:00:56,634 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 106 states [2021-11-07 08:00:56,634 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:00:56,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2021-11-07 08:00:56,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2861, Invalid=8269, Unknown=0, NotChecked=0, Total=11130 [2021-11-07 08:00:56,636 INFO L87 Difference]: Start difference. First operand 2257 states and 7164 transitions. Second operand has 106 states, 105 states have (on average 2.961904761904762) internal successors, (311), 106 states have internal predecessors, (311), 52 states have call successors, (52), 52 states have call predecessors, (52), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:01:02,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:01:02,554 INFO L93 Difference]: Finished difference Result 2311 states and 7483 transitions. [2021-11-07 08:01:02,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2021-11-07 08:01:02,555 INFO L78 Accepts]: Start accepts. Automaton has has 106 states, 105 states have (on average 2.961904761904762) internal successors, (311), 106 states have internal predecessors, (311), 52 states have call successors, (52), 52 states have call predecessors, (52), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 357 [2021-11-07 08:01:02,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:01:02,582 INFO L225 Difference]: With dead ends: 2311 [2021-11-07 08:01:02,582 INFO L226 Difference]: Without dead ends: 2310 [2021-11-07 08:01:02,587 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 561 GetRequests, 406 SyntacticMatches, 0 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4171 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=6892, Invalid=17600, Unknown=0, NotChecked=0, Total=24492 [2021-11-07 08:01:02,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2310 states. [2021-11-07 08:01:02,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2310 to 2308. [2021-11-07 08:01:02,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2308 states, 1679 states have (on average 1.0363311494937464) internal successors, (1740), 1629 states have internal predecessors, (1740), 366 states have call successors, (366), 203 states have call predecessors, (366), 260 states have return successors, (5373), 475 states have call predecessors, (5373), 340 states have call successors, (5373) [2021-11-07 08:01:02,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2308 states to 2308 states and 7479 transitions. [2021-11-07 08:01:02,876 INFO L78 Accepts]: Start accepts. Automaton has 2308 states and 7479 transitions. Word has length 357 [2021-11-07 08:01:02,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:01:02,876 INFO L470 AbstractCegarLoop]: Abstraction has 2308 states and 7479 transitions. [2021-11-07 08:01:02,877 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 106 states, 105 states have (on average 2.961904761904762) internal successors, (311), 106 states have internal predecessors, (311), 52 states have call successors, (52), 52 states have call predecessors, (52), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:01:02,877 INFO L276 IsEmpty]: Start isEmpty. Operand 2308 states and 7479 transitions. [2021-11-07 08:01:02,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2021-11-07 08:01:02,901 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:01:02,901 INFO L513 BasicCegarLoop]: trace histogram [52, 52, 51, 51, 51, 51, 51, 1, 1, 1, 1, 1] [2021-11-07 08:01:02,946 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Forceful destruction successful, exit code 0 [2021-11-07 08:01:03,117 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67,64 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:01:03,117 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting applyHanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [applyHanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2021-11-07 08:01:03,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:01:03,117 INFO L85 PathProgramCache]: Analyzing trace with hash -181094141, now seen corresponding path program 51 times [2021-11-07 08:01:03,118 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:01:03,118 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178294751] [2021-11-07 08:01:03,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:01:03,118 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:01:03,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:01:06,763 INFO L134 CoverageAnalysis]: Checked inductivity of 9078 backedges. 0 proven. 9078 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:01:06,764 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:01:06,764 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178294751] [2021-11-07 08:01:06,764 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178294751] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:01:06,764 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1549033877] [2021-11-07 08:01:06,764 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 08:01:06,764 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:01:06,764 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:01:06,765 INFO L229 MonitoredProcess]: Starting monitored process 65 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:01:06,766 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2021-11-07 08:01:11,241 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 52 check-sat command(s) [2021-11-07 08:01:11,241 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 08:01:11,253 INFO L263 TraceCheckSpWp]: Trace formula consists of 1544 conjuncts, 209 conjunts are in the unsatisfiable core [2021-11-07 08:01:11,258 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:01:12,438 INFO L134 CoverageAnalysis]: Checked inductivity of 9078 backedges. 0 proven. 9078 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:01:12,438 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1549033877] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:01:12,438 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 08:01:12,439 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [105, 105] total 107 [2021-11-07 08:01:12,439 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812654880] [2021-11-07 08:01:12,440 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 108 states [2021-11-07 08:01:12,440 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:01:12,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2021-11-07 08:01:12,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2969, Invalid=8587, Unknown=0, NotChecked=0, Total=11556 [2021-11-07 08:01:12,442 INFO L87 Difference]: Start difference. First operand 2308 states and 7479 transitions. Second operand has 108 states, 107 states have (on average 2.9626168224299065) internal successors, (317), 108 states have internal predecessors, (317), 53 states have call successors, (53), 53 states have call predecessors, (53), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:01:18,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:01:18,223 INFO L93 Difference]: Finished difference Result 2356 states and 7787 transitions. [2021-11-07 08:01:18,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2021-11-07 08:01:18,224 INFO L78 Accepts]: Start accepts. Automaton has has 108 states, 107 states have (on average 2.9626168224299065) internal successors, (317), 108 states have internal predecessors, (317), 53 states have call successors, (53), 53 states have call predecessors, (53), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 364 [2021-11-07 08:01:18,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:01:18,251 INFO L225 Difference]: With dead ends: 2356 [2021-11-07 08:01:18,251 INFO L226 Difference]: Without dead ends: 2355 [2021-11-07 08:01:18,256 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 572 GetRequests, 414 SyntacticMatches, 0 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4331 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=7157, Invalid=18283, Unknown=0, NotChecked=0, Total=25440 [2021-11-07 08:01:18,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2355 states. [2021-11-07 08:01:18,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2355 to 2353. [2021-11-07 08:01:18,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2353 states, 1711 states have (on average 1.0362361192285214) internal successors, (1773), 1660 states have internal predecessors, (1773), 373 states have call successors, (373), 207 states have call predecessors, (373), 266 states have return successors, (5637), 485 states have call predecessors, (5637), 347 states have call successors, (5637) [2021-11-07 08:01:18,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2353 states to 2353 states and 7783 transitions. [2021-11-07 08:01:18,515 INFO L78 Accepts]: Start accepts. Automaton has 2353 states and 7783 transitions. Word has length 364 [2021-11-07 08:01:18,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:01:18,516 INFO L470 AbstractCegarLoop]: Abstraction has 2353 states and 7783 transitions. [2021-11-07 08:01:18,517 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 108 states, 107 states have (on average 2.9626168224299065) internal successors, (317), 108 states have internal predecessors, (317), 53 states have call successors, (53), 53 states have call predecessors, (53), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:01:18,517 INFO L276 IsEmpty]: Start isEmpty. Operand 2353 states and 7783 transitions. [2021-11-07 08:01:18,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 372 [2021-11-07 08:01:18,548 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:01:18,548 INFO L513 BasicCegarLoop]: trace histogram [53, 53, 52, 52, 52, 52, 52, 1, 1, 1, 1, 1] [2021-11-07 08:01:18,586 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Ended with exit code 0 [2021-11-07 08:01:18,749 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 65 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68 [2021-11-07 08:01:18,749 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting applyHanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [applyHanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2021-11-07 08:01:18,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:01:18,749 INFO L85 PathProgramCache]: Analyzing trace with hash -1706754070, now seen corresponding path program 52 times [2021-11-07 08:01:18,750 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:01:18,750 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577805582] [2021-11-07 08:01:18,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:01:18,750 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:01:18,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:01:22,297 INFO L134 CoverageAnalysis]: Checked inductivity of 9438 backedges. 0 proven. 9438 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:01:22,297 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:01:22,298 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577805582] [2021-11-07 08:01:22,298 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577805582] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:01:22,298 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [210895646] [2021-11-07 08:01:22,298 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-07 08:01:22,298 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:01:22,298 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:01:22,299 INFO L229 MonitoredProcess]: Starting monitored process 66 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:01:22,300 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2021-11-07 08:01:26,629 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-07 08:01:26,630 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 08:01:26,641 INFO L263 TraceCheckSpWp]: Trace formula consists of 1573 conjuncts, 213 conjunts are in the unsatisfiable core [2021-11-07 08:01:26,646 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:01:27,849 INFO L134 CoverageAnalysis]: Checked inductivity of 9438 backedges. 0 proven. 9438 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:01:27,849 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [210895646] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:01:27,849 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 08:01:27,849 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [107, 107] total 109 [2021-11-07 08:01:27,849 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421524862] [2021-11-07 08:01:27,850 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 110 states [2021-11-07 08:01:27,850 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:01:27,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2021-11-07 08:01:27,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3079, Invalid=8911, Unknown=0, NotChecked=0, Total=11990 [2021-11-07 08:01:27,853 INFO L87 Difference]: Start difference. First operand 2353 states and 7783 transitions. Second operand has 110 states, 109 states have (on average 2.963302752293578) internal successors, (323), 110 states have internal predecessors, (323), 54 states have call successors, (54), 54 states have call predecessors, (54), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:01:34,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:01:34,571 INFO L93 Difference]: Finished difference Result 2407 states and 8118 transitions. [2021-11-07 08:01:34,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2021-11-07 08:01:34,572 INFO L78 Accepts]: Start accepts. Automaton has has 110 states, 109 states have (on average 2.963302752293578) internal successors, (323), 110 states have internal predecessors, (323), 54 states have call successors, (54), 54 states have call predecessors, (54), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 371 [2021-11-07 08:01:34,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:01:34,599 INFO L225 Difference]: With dead ends: 2407 [2021-11-07 08:01:34,599 INFO L226 Difference]: Without dead ends: 2406 [2021-11-07 08:01:34,604 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 583 GetRequests, 422 SyntacticMatches, 0 SemanticMatches, 161 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4494 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=7427, Invalid=18979, Unknown=0, NotChecked=0, Total=26406 [2021-11-07 08:01:34,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2406 states. [2021-11-07 08:01:34,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2406 to 2404. [2021-11-07 08:01:34,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2404 states, 1747 states have (on average 1.0360618202633085) internal successors, (1810), 1695 states have internal predecessors, (1810), 382 states have call successors, (382), 211 states have call predecessors, (382), 272 states have return successors, (5922), 497 states have call predecessors, (5922), 355 states have call successors, (5922) [2021-11-07 08:01:34,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2404 states to 2404 states and 8114 transitions. [2021-11-07 08:01:34,833 INFO L78 Accepts]: Start accepts. Automaton has 2404 states and 8114 transitions. Word has length 371 [2021-11-07 08:01:34,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:01:34,834 INFO L470 AbstractCegarLoop]: Abstraction has 2404 states and 8114 transitions. [2021-11-07 08:01:34,834 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 110 states, 109 states have (on average 2.963302752293578) internal successors, (323), 110 states have internal predecessors, (323), 54 states have call successors, (54), 54 states have call predecessors, (54), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:01:34,834 INFO L276 IsEmpty]: Start isEmpty. Operand 2404 states and 8114 transitions. [2021-11-07 08:01:34,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 379 [2021-11-07 08:01:34,865 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:01:34,865 INFO L513 BasicCegarLoop]: trace histogram [54, 54, 53, 53, 53, 53, 53, 1, 1, 1, 1, 1] [2021-11-07 08:01:34,906 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Ended with exit code 0 [2021-11-07 08:01:35,066 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2021-11-07 08:01:35,066 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting applyHanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [applyHanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2021-11-07 08:01:35,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:01:35,067 INFO L85 PathProgramCache]: Analyzing trace with hash 1906931491, now seen corresponding path program 53 times [2021-11-07 08:01:35,067 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:01:35,067 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508284615] [2021-11-07 08:01:35,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:01:35,067 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:01:35,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:01:38,807 INFO L134 CoverageAnalysis]: Checked inductivity of 9805 backedges. 0 proven. 9805 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:01:38,807 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:01:38,807 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508284615] [2021-11-07 08:01:38,807 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508284615] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:01:38,807 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2089666177] [2021-11-07 08:01:38,807 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-07 08:01:38,808 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:01:38,808 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:01:38,810 INFO L229 MonitoredProcess]: Starting monitored process 67 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:01:38,813 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2021-11-07 08:01:43,558 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 54 check-sat command(s) [2021-11-07 08:01:43,559 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 08:01:43,572 INFO L263 TraceCheckSpWp]: Trace formula consists of 1602 conjuncts, 217 conjunts are in the unsatisfiable core [2021-11-07 08:01:43,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:01:44,672 INFO L134 CoverageAnalysis]: Checked inductivity of 9805 backedges. 0 proven. 9805 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:01:44,673 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2089666177] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:01:44,673 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 08:01:44,673 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [109, 109] total 111 [2021-11-07 08:01:44,673 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021430937] [2021-11-07 08:01:44,674 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 112 states [2021-11-07 08:01:44,674 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:01:44,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2021-11-07 08:01:44,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3191, Invalid=9241, Unknown=0, NotChecked=0, Total=12432 [2021-11-07 08:01:44,676 INFO L87 Difference]: Start difference. First operand 2404 states and 8114 transitions. Second operand has 112 states, 111 states have (on average 2.963963963963964) internal successors, (329), 112 states have internal predecessors, (329), 55 states have call successors, (55), 55 states have call predecessors, (55), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:01:51,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:01:51,111 INFO L93 Difference]: Finished difference Result 2452 states and 8438 transitions. [2021-11-07 08:01:51,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2021-11-07 08:01:51,112 INFO L78 Accepts]: Start accepts. Automaton has has 112 states, 111 states have (on average 2.963963963963964) internal successors, (329), 112 states have internal predecessors, (329), 55 states have call successors, (55), 55 states have call predecessors, (55), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 378 [2021-11-07 08:01:51,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:01:51,141 INFO L225 Difference]: With dead ends: 2452 [2021-11-07 08:01:51,141 INFO L226 Difference]: Without dead ends: 2451 [2021-11-07 08:01:51,145 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 594 GetRequests, 430 SyntacticMatches, 0 SemanticMatches, 164 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4660 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=7702, Invalid=19688, Unknown=0, NotChecked=0, Total=27390 [2021-11-07 08:01:51,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2451 states. [2021-11-07 08:01:51,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2451 to 2449. [2021-11-07 08:01:51,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2449 states, 1779 states have (on average 1.0359752670039348) internal successors, (1843), 1726 states have internal predecessors, (1843), 389 states have call successors, (389), 215 states have call predecessors, (389), 278 states have return successors, (6202), 507 states have call predecessors, (6202), 362 states have call successors, (6202) [2021-11-07 08:01:51,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2449 states to 2449 states and 8434 transitions. [2021-11-07 08:01:51,374 INFO L78 Accepts]: Start accepts. Automaton has 2449 states and 8434 transitions. Word has length 378 [2021-11-07 08:01:51,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:01:51,375 INFO L470 AbstractCegarLoop]: Abstraction has 2449 states and 8434 transitions. [2021-11-07 08:01:51,375 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 112 states, 111 states have (on average 2.963963963963964) internal successors, (329), 112 states have internal predecessors, (329), 55 states have call successors, (55), 55 states have call predecessors, (55), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:01:51,375 INFO L276 IsEmpty]: Start isEmpty. Operand 2449 states and 8434 transitions. [2021-11-07 08:01:51,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 386 [2021-11-07 08:01:51,401 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:01:51,401 INFO L513 BasicCegarLoop]: trace histogram [55, 55, 54, 54, 54, 54, 54, 1, 1, 1, 1, 1] [2021-11-07 08:01:51,438 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Ended with exit code 0 [2021-11-07 08:01:51,602 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,67 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:01:51,602 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting applyHanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [applyHanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2021-11-07 08:01:51,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:01:51,602 INFO L85 PathProgramCache]: Analyzing trace with hash 247733706, now seen corresponding path program 54 times [2021-11-07 08:01:51,603 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:01:51,603 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787678669] [2021-11-07 08:01:51,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:01:51,603 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:01:51,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:01:55,239 INFO L134 CoverageAnalysis]: Checked inductivity of 10179 backedges. 0 proven. 10179 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:01:55,239 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:01:55,239 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787678669] [2021-11-07 08:01:55,240 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787678669] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:01:55,242 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1919017304] [2021-11-07 08:01:55,242 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-07 08:01:55,243 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:01:55,243 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:01:55,244 INFO L229 MonitoredProcess]: Starting monitored process 68 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:01:55,254 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2021-11-07 08:02:00,523 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 55 check-sat command(s) [2021-11-07 08:02:00,523 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 08:02:00,535 INFO L263 TraceCheckSpWp]: Trace formula consists of 1631 conjuncts, 221 conjunts are in the unsatisfiable core [2021-11-07 08:02:00,540 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:02:01,691 INFO L134 CoverageAnalysis]: Checked inductivity of 10179 backedges. 0 proven. 10179 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:02:01,691 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1919017304] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:02:01,691 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 08:02:01,692 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [111, 111] total 113 [2021-11-07 08:02:01,692 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373756412] [2021-11-07 08:02:01,693 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 114 states [2021-11-07 08:02:01,693 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:02:01,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 114 interpolants. [2021-11-07 08:02:01,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3305, Invalid=9577, Unknown=0, NotChecked=0, Total=12882 [2021-11-07 08:02:01,695 INFO L87 Difference]: Start difference. First operand 2449 states and 8434 transitions. Second operand has 114 states, 113 states have (on average 2.9646017699115044) internal successors, (335), 114 states have internal predecessors, (335), 56 states have call successors, (56), 56 states have call predecessors, (56), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:02:08,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:02:08,771 INFO L93 Difference]: Finished difference Result 2503 states and 8785 transitions. [2021-11-07 08:02:08,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2021-11-07 08:02:08,771 INFO L78 Accepts]: Start accepts. Automaton has has 114 states, 113 states have (on average 2.9646017699115044) internal successors, (335), 114 states have internal predecessors, (335), 56 states have call successors, (56), 56 states have call predecessors, (56), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 385 [2021-11-07 08:02:08,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:02:08,800 INFO L225 Difference]: With dead ends: 2503 [2021-11-07 08:02:08,800 INFO L226 Difference]: Without dead ends: 2502 [2021-11-07 08:02:08,805 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 605 GetRequests, 438 SyntacticMatches, 0 SemanticMatches, 167 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4829 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=7982, Invalid=20410, Unknown=0, NotChecked=0, Total=28392 [2021-11-07 08:02:08,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2502 states. [2021-11-07 08:02:09,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2502 to 2500. [2021-11-07 08:02:09,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2500 states, 1815 states have (on average 1.0358126721763086) internal successors, (1880), 1761 states have internal predecessors, (1880), 398 states have call successors, (398), 219 states have call predecessors, (398), 284 states have return successors, (6503), 519 states have call predecessors, (6503), 370 states have call successors, (6503) [2021-11-07 08:02:09,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2500 states to 2500 states and 8781 transitions. [2021-11-07 08:02:09,067 INFO L78 Accepts]: Start accepts. Automaton has 2500 states and 8781 transitions. Word has length 385 [2021-11-07 08:02:09,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:02:09,068 INFO L470 AbstractCegarLoop]: Abstraction has 2500 states and 8781 transitions. [2021-11-07 08:02:09,068 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 114 states, 113 states have (on average 2.9646017699115044) internal successors, (335), 114 states have internal predecessors, (335), 56 states have call successors, (56), 56 states have call predecessors, (56), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:02:09,068 INFO L276 IsEmpty]: Start isEmpty. Operand 2500 states and 8781 transitions. [2021-11-07 08:02:09,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2021-11-07 08:02:09,103 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:02:09,103 INFO L513 BasicCegarLoop]: trace histogram [56, 56, 55, 55, 55, 55, 55, 1, 1, 1, 1, 1] [2021-11-07 08:02:09,143 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Ended with exit code 0 [2021-11-07 08:02:09,303 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,68 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:02:09,304 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting applyHanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [applyHanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2021-11-07 08:02:09,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:02:09,304 INFO L85 PathProgramCache]: Analyzing trace with hash 661060931, now seen corresponding path program 55 times [2021-11-07 08:02:09,304 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:02:09,304 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126203139] [2021-11-07 08:02:09,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:02:09,305 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:02:09,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:02:13,172 INFO L134 CoverageAnalysis]: Checked inductivity of 10560 backedges. 0 proven. 10560 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:02:13,173 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:02:13,173 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126203139] [2021-11-07 08:02:13,173 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126203139] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:02:13,173 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1632907568] [2021-11-07 08:02:13,173 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-07 08:02:13,173 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:02:13,173 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:02:13,175 INFO L229 MonitoredProcess]: Starting monitored process 69 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:02:13,175 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2021-11-07 08:02:17,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:02:17,884 INFO L263 TraceCheckSpWp]: Trace formula consists of 1660 conjuncts, 225 conjunts are in the unsatisfiable core [2021-11-07 08:02:17,889 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:02:19,162 INFO L134 CoverageAnalysis]: Checked inductivity of 10560 backedges. 0 proven. 10560 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:02:19,163 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1632907568] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:02:19,163 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 08:02:19,163 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [113, 113] total 115 [2021-11-07 08:02:19,163 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755048416] [2021-11-07 08:02:19,164 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 116 states [2021-11-07 08:02:19,164 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:02:19,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 116 interpolants. [2021-11-07 08:02:19,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3421, Invalid=9919, Unknown=0, NotChecked=0, Total=13340 [2021-11-07 08:02:19,166 INFO L87 Difference]: Start difference. First operand 2500 states and 8781 transitions. Second operand has 116 states, 115 states have (on average 2.965217391304348) internal successors, (341), 116 states have internal predecessors, (341), 57 states have call successors, (57), 57 states have call predecessors, (57), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:02:26,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:02:26,539 INFO L93 Difference]: Finished difference Result 2548 states and 9121 transitions. [2021-11-07 08:02:26,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2021-11-07 08:02:26,540 INFO L78 Accepts]: Start accepts. Automaton has has 116 states, 115 states have (on average 2.965217391304348) internal successors, (341), 116 states have internal predecessors, (341), 57 states have call successors, (57), 57 states have call predecessors, (57), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 392 [2021-11-07 08:02:26,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:02:26,571 INFO L225 Difference]: With dead ends: 2548 [2021-11-07 08:02:26,571 INFO L226 Difference]: Without dead ends: 2547 [2021-11-07 08:02:26,576 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 616 GetRequests, 446 SyntacticMatches, 0 SemanticMatches, 170 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5001 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=8267, Invalid=21145, Unknown=0, NotChecked=0, Total=29412 [2021-11-07 08:02:26,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2547 states. [2021-11-07 08:02:26,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2547 to 2545. [2021-11-07 08:02:26,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2545 states, 1847 states have (on average 1.0357336220898754) internal successors, (1913), 1792 states have internal predecessors, (1913), 405 states have call successors, (405), 223 states have call predecessors, (405), 290 states have return successors, (6799), 529 states have call predecessors, (6799), 377 states have call successors, (6799) [2021-11-07 08:02:26,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2545 states to 2545 states and 9117 transitions. [2021-11-07 08:02:26,860 INFO L78 Accepts]: Start accepts. Automaton has 2545 states and 9117 transitions. Word has length 392 [2021-11-07 08:02:26,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:02:26,861 INFO L470 AbstractCegarLoop]: Abstraction has 2545 states and 9117 transitions. [2021-11-07 08:02:26,861 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 116 states, 115 states have (on average 2.965217391304348) internal successors, (341), 116 states have internal predecessors, (341), 57 states have call successors, (57), 57 states have call predecessors, (57), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:02:26,861 INFO L276 IsEmpty]: Start isEmpty. Operand 2545 states and 9117 transitions. [2021-11-07 08:02:26,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 400 [2021-11-07 08:02:26,893 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:02:26,893 INFO L513 BasicCegarLoop]: trace histogram [57, 57, 56, 56, 56, 56, 56, 1, 1, 1, 1, 1] [2021-11-07 08:02:26,932 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Ended with exit code 0 [2021-11-07 08:02:27,094 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72,69 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:02:27,094 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting applyHanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [applyHanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2021-11-07 08:02:27,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:02:27,094 INFO L85 PathProgramCache]: Analyzing trace with hash -1274448982, now seen corresponding path program 56 times [2021-11-07 08:02:27,094 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:02:27,095 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87232587] [2021-11-07 08:02:27,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:02:27,095 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:02:27,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:02:31,379 INFO L134 CoverageAnalysis]: Checked inductivity of 10948 backedges. 0 proven. 10948 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:02:31,379 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:02:31,379 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87232587] [2021-11-07 08:02:31,379 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87232587] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:02:31,379 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [943801775] [2021-11-07 08:02:31,379 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 08:02:31,380 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:02:31,380 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:02:31,380 INFO L229 MonitoredProcess]: Starting monitored process 70 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:02:31,381 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process [2021-11-07 08:02:36,194 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 08:02:36,195 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 08:02:36,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 1689 conjuncts, 229 conjunts are in the unsatisfiable core [2021-11-07 08:02:36,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:02:37,473 INFO L134 CoverageAnalysis]: Checked inductivity of 10948 backedges. 0 proven. 10948 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:02:37,474 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [943801775] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:02:37,474 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 08:02:37,474 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [115, 115] total 117 [2021-11-07 08:02:37,474 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127889076] [2021-11-07 08:02:37,475 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 118 states [2021-11-07 08:02:37,475 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:02:37,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 118 interpolants. [2021-11-07 08:02:37,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3539, Invalid=10267, Unknown=0, NotChecked=0, Total=13806 [2021-11-07 08:02:37,477 INFO L87 Difference]: Start difference. First operand 2545 states and 9117 transitions. Second operand has 118 states, 117 states have (on average 2.965811965811966) internal successors, (347), 118 states have internal predecessors, (347), 58 states have call successors, (58), 58 states have call predecessors, (58), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:02:44,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:02:44,936 INFO L93 Difference]: Finished difference Result 2599 states and 9484 transitions. [2021-11-07 08:02:44,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2021-11-07 08:02:44,936 INFO L78 Accepts]: Start accepts. Automaton has has 118 states, 117 states have (on average 2.965811965811966) internal successors, (347), 118 states have internal predecessors, (347), 58 states have call successors, (58), 58 states have call predecessors, (58), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 399 [2021-11-07 08:02:44,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:02:44,968 INFO L225 Difference]: With dead ends: 2599 [2021-11-07 08:02:44,968 INFO L226 Difference]: Without dead ends: 2598 [2021-11-07 08:02:44,974 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 627 GetRequests, 454 SyntacticMatches, 0 SemanticMatches, 173 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5176 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=8557, Invalid=21893, Unknown=0, NotChecked=0, Total=30450 [2021-11-07 08:02:44,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2598 states. [2021-11-07 08:02:45,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2598 to 2596. [2021-11-07 08:02:45,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2596 states, 1883 states have (on average 1.0355815188528943) internal successors, (1950), 1827 states have internal predecessors, (1950), 414 states have call successors, (414), 227 states have call predecessors, (414), 296 states have return successors, (7116), 541 states have call predecessors, (7116), 385 states have call successors, (7116) [2021-11-07 08:02:45,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2596 states to 2596 states and 9480 transitions. [2021-11-07 08:02:45,282 INFO L78 Accepts]: Start accepts. Automaton has 2596 states and 9480 transitions. Word has length 399 [2021-11-07 08:02:45,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:02:45,282 INFO L470 AbstractCegarLoop]: Abstraction has 2596 states and 9480 transitions. [2021-11-07 08:02:45,283 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 118 states, 117 states have (on average 2.965811965811966) internal successors, (347), 118 states have internal predecessors, (347), 58 states have call successors, (58), 58 states have call predecessors, (58), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:02:45,283 INFO L276 IsEmpty]: Start isEmpty. Operand 2596 states and 9480 transitions. [2021-11-07 08:02:45,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 407 [2021-11-07 08:02:45,317 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:02:45,318 INFO L513 BasicCegarLoop]: trace histogram [58, 58, 57, 57, 57, 57, 57, 1, 1, 1, 1, 1] [2021-11-07 08:02:45,415 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Forceful destruction successful, exit code 0 [2021-11-07 08:02:45,615 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,70 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:02:45,615 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting applyHanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [applyHanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2021-11-07 08:02:45,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:02:45,616 INFO L85 PathProgramCache]: Analyzing trace with hash -1552987293, now seen corresponding path program 57 times [2021-11-07 08:02:45,616 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:02:45,616 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674554105] [2021-11-07 08:02:45,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:02:45,617 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:02:45,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:02:50,232 INFO L134 CoverageAnalysis]: Checked inductivity of 11343 backedges. 0 proven. 11343 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:02:50,232 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:02:50,232 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674554105] [2021-11-07 08:02:50,232 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674554105] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:02:50,232 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1717414775] [2021-11-07 08:02:50,232 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 08:02:50,233 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:02:50,233 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:02:50,234 INFO L229 MonitoredProcess]: Starting monitored process 71 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:02:50,235 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process [2021-11-07 08:02:55,966 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 58 check-sat command(s) [2021-11-07 08:02:55,966 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 08:02:55,983 INFO L263 TraceCheckSpWp]: Trace formula consists of 1718 conjuncts, 233 conjunts are in the unsatisfiable core [2021-11-07 08:02:55,988 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:02:57,259 INFO L134 CoverageAnalysis]: Checked inductivity of 11343 backedges. 0 proven. 11343 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:02:57,260 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1717414775] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:02:57,260 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 08:02:57,260 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [117, 117] total 119 [2021-11-07 08:02:57,260 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528764498] [2021-11-07 08:02:57,261 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 120 states [2021-11-07 08:02:57,261 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:02:57,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 120 interpolants. [2021-11-07 08:02:57,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3659, Invalid=10621, Unknown=0, NotChecked=0, Total=14280 [2021-11-07 08:02:57,262 INFO L87 Difference]: Start difference. First operand 2596 states and 9480 transitions. Second operand has 120 states, 119 states have (on average 2.966386554621849) internal successors, (353), 120 states have internal predecessors, (353), 59 states have call successors, (59), 59 states have call predecessors, (59), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:03:05,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:03:05,076 INFO L93 Difference]: Finished difference Result 2644 states and 9836 transitions. [2021-11-07 08:03:05,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2021-11-07 08:03:05,077 INFO L78 Accepts]: Start accepts. Automaton has has 120 states, 119 states have (on average 2.966386554621849) internal successors, (353), 120 states have internal predecessors, (353), 59 states have call successors, (59), 59 states have call predecessors, (59), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 406 [2021-11-07 08:03:05,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:03:05,119 INFO L225 Difference]: With dead ends: 2644 [2021-11-07 08:03:05,119 INFO L226 Difference]: Without dead ends: 2643 [2021-11-07 08:03:05,125 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 638 GetRequests, 462 SyntacticMatches, 0 SemanticMatches, 176 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5354 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=8852, Invalid=22654, Unknown=0, NotChecked=0, Total=31506 [2021-11-07 08:03:05,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2643 states. [2021-11-07 08:03:05,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2643 to 2641. [2021-11-07 08:03:05,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2641 states, 1915 states have (on average 1.035509138381201) internal successors, (1983), 1858 states have internal predecessors, (1983), 421 states have call successors, (421), 231 states have call predecessors, (421), 302 states have return successors, (7428), 551 states have call predecessors, (7428), 392 states have call successors, (7428) [2021-11-07 08:03:05,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2641 states to 2641 states and 9832 transitions. [2021-11-07 08:03:05,504 INFO L78 Accepts]: Start accepts. Automaton has 2641 states and 9832 transitions. Word has length 406 [2021-11-07 08:03:05,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:03:05,505 INFO L470 AbstractCegarLoop]: Abstraction has 2641 states and 9832 transitions. [2021-11-07 08:03:05,505 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 120 states, 119 states have (on average 2.966386554621849) internal successors, (353), 120 states have internal predecessors, (353), 59 states have call successors, (59), 59 states have call predecessors, (59), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:03:05,505 INFO L276 IsEmpty]: Start isEmpty. Operand 2641 states and 9832 transitions. [2021-11-07 08:03:05,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 414 [2021-11-07 08:03:05,541 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:03:05,542 INFO L513 BasicCegarLoop]: trace histogram [59, 59, 58, 58, 58, 58, 58, 1, 1, 1, 1, 1] [2021-11-07 08:03:05,586 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Ended with exit code 0 [2021-11-07 08:03:05,742 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74,71 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:03:05,742 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting applyHanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [applyHanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2021-11-07 08:03:05,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:03:05,743 INFO L85 PathProgramCache]: Analyzing trace with hash -1227685494, now seen corresponding path program 58 times [2021-11-07 08:03:05,743 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:03:05,743 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000390167] [2021-11-07 08:03:05,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:03:05,743 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:03:05,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:03:10,489 INFO L134 CoverageAnalysis]: Checked inductivity of 11745 backedges. 0 proven. 11745 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:03:10,489 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:03:10,489 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000390167] [2021-11-07 08:03:10,489 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000390167] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:03:10,489 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [279861763] [2021-11-07 08:03:10,489 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-07 08:03:10,489 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:03:10,489 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:03:10,490 INFO L229 MonitoredProcess]: Starting monitored process 72 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:03:10,492 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Waiting until timeout for monitored process [2021-11-07 08:03:15,888 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-07 08:03:15,888 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 08:03:15,900 INFO L263 TraceCheckSpWp]: Trace formula consists of 1747 conjuncts, 237 conjunts are in the unsatisfiable core [2021-11-07 08:03:15,904 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:03:17,189 INFO L134 CoverageAnalysis]: Checked inductivity of 11745 backedges. 0 proven. 11745 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:03:17,189 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [279861763] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:03:17,190 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 08:03:17,190 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [119, 119] total 121 [2021-11-07 08:03:17,190 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656466453] [2021-11-07 08:03:17,191 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 122 states [2021-11-07 08:03:17,191 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:03:17,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 122 interpolants. [2021-11-07 08:03:17,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3781, Invalid=10981, Unknown=0, NotChecked=0, Total=14762 [2021-11-07 08:03:17,194 INFO L87 Difference]: Start difference. First operand 2641 states and 9832 transitions. Second operand has 122 states, 121 states have (on average 2.9669421487603307) internal successors, (359), 122 states have internal predecessors, (359), 60 states have call successors, (60), 60 states have call predecessors, (60), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:03:26,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:03:26,417 INFO L93 Difference]: Finished difference Result 2695 states and 10215 transitions. [2021-11-07 08:03:26,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2021-11-07 08:03:26,418 INFO L78 Accepts]: Start accepts. Automaton has has 122 states, 121 states have (on average 2.9669421487603307) internal successors, (359), 122 states have internal predecessors, (359), 60 states have call successors, (60), 60 states have call predecessors, (60), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 413 [2021-11-07 08:03:26,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:03:26,453 INFO L225 Difference]: With dead ends: 2695 [2021-11-07 08:03:26,453 INFO L226 Difference]: Without dead ends: 2694 [2021-11-07 08:03:26,460 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 649 GetRequests, 470 SyntacticMatches, 0 SemanticMatches, 179 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5535 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=9152, Invalid=23428, Unknown=0, NotChecked=0, Total=32580 [2021-11-07 08:03:26,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2694 states. [2021-11-07 08:03:26,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2694 to 2692. [2021-11-07 08:03:26,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2692 states, 1951 states have (on average 1.035366478728857) internal successors, (2020), 1893 states have internal predecessors, (2020), 430 states have call successors, (430), 235 states have call predecessors, (430), 308 states have return successors, (7761), 563 states have call predecessors, (7761), 400 states have call successors, (7761) [2021-11-07 08:03:26,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2692 states to 2692 states and 10211 transitions. [2021-11-07 08:03:26,739 INFO L78 Accepts]: Start accepts. Automaton has 2692 states and 10211 transitions. Word has length 413 [2021-11-07 08:03:26,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:03:26,740 INFO L470 AbstractCegarLoop]: Abstraction has 2692 states and 10211 transitions. [2021-11-07 08:03:26,740 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 122 states, 121 states have (on average 2.9669421487603307) internal successors, (359), 122 states have internal predecessors, (359), 60 states have call successors, (60), 60 states have call predecessors, (60), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:03:26,740 INFO L276 IsEmpty]: Start isEmpty. Operand 2692 states and 10211 transitions. [2021-11-07 08:03:26,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 421 [2021-11-07 08:03:26,781 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:03:26,781 INFO L513 BasicCegarLoop]: trace histogram [60, 60, 59, 59, 59, 59, 59, 1, 1, 1, 1, 1] [2021-11-07 08:03:26,827 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Ended with exit code 0 [2021-11-07 08:03:26,982 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 72 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable75 [2021-11-07 08:03:26,983 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting applyHanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [applyHanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2021-11-07 08:03:26,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:03:26,983 INFO L85 PathProgramCache]: Analyzing trace with hash -2025561725, now seen corresponding path program 59 times [2021-11-07 08:03:26,983 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:03:26,983 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147904094] [2021-11-07 08:03:26,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:03:26,983 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:03:27,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:03:31,899 INFO L134 CoverageAnalysis]: Checked inductivity of 12154 backedges. 0 proven. 12154 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:03:31,899 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:03:31,899 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147904094] [2021-11-07 08:03:31,899 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147904094] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:03:31,899 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1511547891] [2021-11-07 08:03:31,899 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-07 08:03:31,899 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:03:31,900 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:03:31,900 INFO L229 MonitoredProcess]: Starting monitored process 73 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:03:31,901 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process [2021-11-07 08:03:37,959 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 60 check-sat command(s) [2021-11-07 08:03:37,959 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 08:03:37,976 INFO L263 TraceCheckSpWp]: Trace formula consists of 1776 conjuncts, 241 conjunts are in the unsatisfiable core [2021-11-07 08:03:37,982 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:03:39,286 INFO L134 CoverageAnalysis]: Checked inductivity of 12154 backedges. 0 proven. 12154 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:03:39,286 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1511547891] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:03:39,286 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 08:03:39,286 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [121, 121] total 123 [2021-11-07 08:03:39,287 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544779839] [2021-11-07 08:03:39,287 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 124 states [2021-11-07 08:03:39,287 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:03:39,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 124 interpolants. [2021-11-07 08:03:39,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3905, Invalid=11347, Unknown=0, NotChecked=0, Total=15252 [2021-11-07 08:03:39,290 INFO L87 Difference]: Start difference. First operand 2692 states and 10211 transitions. Second operand has 124 states, 123 states have (on average 2.967479674796748) internal successors, (365), 124 states have internal predecessors, (365), 61 states have call successors, (61), 61 states have call predecessors, (61), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:03:47,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:03:47,753 INFO L93 Difference]: Finished difference Result 2740 states and 10583 transitions. [2021-11-07 08:03:47,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 122 states. [2021-11-07 08:03:47,753 INFO L78 Accepts]: Start accepts. Automaton has has 124 states, 123 states have (on average 2.967479674796748) internal successors, (365), 124 states have internal predecessors, (365), 61 states have call successors, (61), 61 states have call predecessors, (61), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 420 [2021-11-07 08:03:47,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:03:47,794 INFO L225 Difference]: With dead ends: 2740 [2021-11-07 08:03:47,794 INFO L226 Difference]: Without dead ends: 2739 [2021-11-07 08:03:47,802 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 660 GetRequests, 478 SyntacticMatches, 0 SemanticMatches, 182 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5719 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=9457, Invalid=24215, Unknown=0, NotChecked=0, Total=33672 [2021-11-07 08:03:47,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2739 states. [2021-11-07 08:03:48,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2739 to 2737. [2021-11-07 08:03:48,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2737 states, 1983 states have (on average 1.0353000504286434) internal successors, (2053), 1924 states have internal predecessors, (2053), 437 states have call successors, (437), 239 states have call predecessors, (437), 314 states have return successors, (8089), 573 states have call predecessors, (8089), 407 states have call successors, (8089) [2021-11-07 08:03:48,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2737 states to 2737 states and 10579 transitions. [2021-11-07 08:03:48,184 INFO L78 Accepts]: Start accepts. Automaton has 2737 states and 10579 transitions. Word has length 420 [2021-11-07 08:03:48,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:03:48,185 INFO L470 AbstractCegarLoop]: Abstraction has 2737 states and 10579 transitions. [2021-11-07 08:03:48,185 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 124 states, 123 states have (on average 2.967479674796748) internal successors, (365), 124 states have internal predecessors, (365), 61 states have call successors, (61), 61 states have call predecessors, (61), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:03:48,185 INFO L276 IsEmpty]: Start isEmpty. Operand 2737 states and 10579 transitions. [2021-11-07 08:03:48,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 428 [2021-11-07 08:03:48,229 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:03:48,229 INFO L513 BasicCegarLoop]: trace histogram [61, 61, 60, 60, 60, 60, 60, 1, 1, 1, 1, 1] [2021-11-07 08:03:48,275 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Forceful destruction successful, exit code 0 [2021-11-07 08:03:48,429 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable76 [2021-11-07 08:03:48,430 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting applyHanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [applyHanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2021-11-07 08:03:48,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:03:48,430 INFO L85 PathProgramCache]: Analyzing trace with hash 526305130, now seen corresponding path program 60 times [2021-11-07 08:03:48,430 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:03:48,430 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48596292] [2021-11-07 08:03:48,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:03:48,430 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:03:48,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:03:53,338 INFO L134 CoverageAnalysis]: Checked inductivity of 12570 backedges. 0 proven. 12570 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:03:53,338 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:03:53,338 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48596292] [2021-11-07 08:03:53,338 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48596292] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:03:53,338 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1036608469] [2021-11-07 08:03:53,338 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-07 08:03:53,338 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:03:53,339 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:03:53,339 INFO L229 MonitoredProcess]: Starting monitored process 74 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:03:53,341 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Waiting until timeout for monitored process [2021-11-07 08:03:59,709 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 61 check-sat command(s) [2021-11-07 08:03:59,710 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 08:03:59,723 INFO L263 TraceCheckSpWp]: Trace formula consists of 1805 conjuncts, 245 conjunts are in the unsatisfiable core [2021-11-07 08:03:59,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:04:01,022 INFO L134 CoverageAnalysis]: Checked inductivity of 12570 backedges. 0 proven. 12570 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:04:01,023 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1036608469] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:04:01,023 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 08:04:01,023 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [123, 123] total 125 [2021-11-07 08:04:01,023 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019202532] [2021-11-07 08:04:01,024 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 126 states [2021-11-07 08:04:01,024 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:04:01,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 126 interpolants. [2021-11-07 08:04:01,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4031, Invalid=11719, Unknown=0, NotChecked=0, Total=15750 [2021-11-07 08:04:01,028 INFO L87 Difference]: Start difference. First operand 2737 states and 10579 transitions. Second operand has 126 states, 125 states have (on average 2.968) internal successors, (371), 126 states have internal predecessors, (371), 62 states have call successors, (62), 62 states have call predecessors, (62), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:04:10,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:04:10,425 INFO L93 Difference]: Finished difference Result 2791 states and 10978 transitions. [2021-11-07 08:04:10,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2021-11-07 08:04:10,426 INFO L78 Accepts]: Start accepts. Automaton has has 126 states, 125 states have (on average 2.968) internal successors, (371), 126 states have internal predecessors, (371), 62 states have call successors, (62), 62 states have call predecessors, (62), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 427 [2021-11-07 08:04:10,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:04:10,468 INFO L225 Difference]: With dead ends: 2791 [2021-11-07 08:04:10,468 INFO L226 Difference]: Without dead ends: 2790 [2021-11-07 08:04:10,473 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 671 GetRequests, 486 SyntacticMatches, 0 SemanticMatches, 185 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5906 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=9767, Invalid=25015, Unknown=0, NotChecked=0, Total=34782 [2021-11-07 08:04:10,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2790 states. [2021-11-07 08:04:10,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2790 to 2788. [2021-11-07 08:04:10,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2788 states, 2019 states have (on average 1.0351659237246162) internal successors, (2090), 1959 states have internal predecessors, (2090), 446 states have call successors, (446), 243 states have call predecessors, (446), 320 states have return successors, (8438), 585 states have call predecessors, (8438), 415 states have call successors, (8438) [2021-11-07 08:04:10,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2788 states to 2788 states and 10974 transitions. [2021-11-07 08:04:10,830 INFO L78 Accepts]: Start accepts. Automaton has 2788 states and 10974 transitions. Word has length 427 [2021-11-07 08:04:10,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:04:10,831 INFO L470 AbstractCegarLoop]: Abstraction has 2788 states and 10974 transitions. [2021-11-07 08:04:10,831 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 126 states, 125 states have (on average 2.968) internal successors, (371), 126 states have internal predecessors, (371), 62 states have call successors, (62), 62 states have call predecessors, (62), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:04:10,832 INFO L276 IsEmpty]: Start isEmpty. Operand 2788 states and 10974 transitions. [2021-11-07 08:04:10,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 435 [2021-11-07 08:04:10,879 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:04:10,880 INFO L513 BasicCegarLoop]: trace histogram [62, 62, 61, 61, 61, 61, 61, 1, 1, 1, 1, 1] [2021-11-07 08:04:10,925 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Ended with exit code 0 [2021-11-07 08:04:11,080 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 74 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable77 [2021-11-07 08:04:11,080 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting applyHanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [applyHanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2021-11-07 08:04:11,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:04:11,081 INFO L85 PathProgramCache]: Analyzing trace with hash -1461174365, now seen corresponding path program 61 times [2021-11-07 08:04:11,081 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:04:11,081 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014993023] [2021-11-07 08:04:11,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:04:11,081 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:04:11,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:04:16,324 INFO L134 CoverageAnalysis]: Checked inductivity of 12993 backedges. 0 proven. 12993 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:04:16,325 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:04:16,325 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014993023] [2021-11-07 08:04:16,325 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014993023] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:04:16,325 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1718785110] [2021-11-07 08:04:16,325 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-07 08:04:16,325 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:04:16,326 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:04:16,326 INFO L229 MonitoredProcess]: Starting monitored process 75 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:04:16,327 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Waiting until timeout for monitored process [2021-11-07 08:04:22,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:04:22,291 INFO L263 TraceCheckSpWp]: Trace formula consists of 1834 conjuncts, 249 conjunts are in the unsatisfiable core [2021-11-07 08:04:22,297 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:04:23,555 INFO L134 CoverageAnalysis]: Checked inductivity of 12993 backedges. 0 proven. 12993 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:04:23,555 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1718785110] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:04:23,555 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 08:04:23,556 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [125, 125] total 127 [2021-11-07 08:04:23,556 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601111892] [2021-11-07 08:04:23,556 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 128 states [2021-11-07 08:04:23,556 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:04:23,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 128 interpolants. [2021-11-07 08:04:23,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4159, Invalid=12097, Unknown=0, NotChecked=0, Total=16256 [2021-11-07 08:04:23,559 INFO L87 Difference]: Start difference. First operand 2788 states and 10974 transitions. Second operand has 128 states, 127 states have (on average 2.968503937007874) internal successors, (377), 128 states have internal predecessors, (377), 63 states have call successors, (63), 63 states have call predecessors, (63), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:04:33,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:04:33,671 INFO L93 Difference]: Finished difference Result 2836 states and 11362 transitions. [2021-11-07 08:04:33,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2021-11-07 08:04:33,672 INFO L78 Accepts]: Start accepts. Automaton has has 128 states, 127 states have (on average 2.968503937007874) internal successors, (377), 128 states have internal predecessors, (377), 63 states have call successors, (63), 63 states have call predecessors, (63), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 434 [2021-11-07 08:04:33,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:04:33,720 INFO L225 Difference]: With dead ends: 2836 [2021-11-07 08:04:33,720 INFO L226 Difference]: Without dead ends: 2835 [2021-11-07 08:04:33,726 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 682 GetRequests, 494 SyntacticMatches, 0 SemanticMatches, 188 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6096 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=10082, Invalid=25828, Unknown=0, NotChecked=0, Total=35910 [2021-11-07 08:04:33,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2835 states. [2021-11-07 08:04:33,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2835 to 2833. [2021-11-07 08:04:33,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2833 states, 2051 states have (on average 1.0351048269137006) internal successors, (2123), 1990 states have internal predecessors, (2123), 453 states have call successors, (453), 247 states have call predecessors, (453), 326 states have return successors, (8782), 595 states have call predecessors, (8782), 422 states have call successors, (8782) [2021-11-07 08:04:34,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2833 states to 2833 states and 11358 transitions. [2021-11-07 08:04:34,045 INFO L78 Accepts]: Start accepts. Automaton has 2833 states and 11358 transitions. Word has length 434 [2021-11-07 08:04:34,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:04:34,046 INFO L470 AbstractCegarLoop]: Abstraction has 2833 states and 11358 transitions. [2021-11-07 08:04:34,046 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 128 states, 127 states have (on average 2.968503937007874) internal successors, (377), 128 states have internal predecessors, (377), 63 states have call successors, (63), 63 states have call predecessors, (63), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:04:34,046 INFO L276 IsEmpty]: Start isEmpty. Operand 2833 states and 11358 transitions. [2021-11-07 08:04:34,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 442 [2021-11-07 08:04:34,096 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:04:34,096 INFO L513 BasicCegarLoop]: trace histogram [63, 63, 62, 62, 62, 62, 62, 1, 1, 1, 1, 1] [2021-11-07 08:04:34,140 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Ended with exit code 0 [2021-11-07 08:04:34,296 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 75 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable78 [2021-11-07 08:04:34,297 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting applyHanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [applyHanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2021-11-07 08:04:34,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:04:34,297 INFO L85 PathProgramCache]: Analyzing trace with hash -1318402742, now seen corresponding path program 62 times [2021-11-07 08:04:34,297 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:04:34,297 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135465814] [2021-11-07 08:04:34,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:04:34,297 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:04:34,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:04:39,477 INFO L134 CoverageAnalysis]: Checked inductivity of 13423 backedges. 0 proven. 13423 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:04:39,478 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:04:39,478 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135465814] [2021-11-07 08:04:39,478 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135465814] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:04:39,478 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [573427728] [2021-11-07 08:04:39,478 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 08:04:39,478 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:04:39,478 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:04:39,479 INFO L229 MonitoredProcess]: Starting monitored process 76 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:04:39,480 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Waiting until timeout for monitored process [2021-11-07 08:04:45,767 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 08:04:45,768 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 08:04:45,785 INFO L263 TraceCheckSpWp]: Trace formula consists of 1863 conjuncts, 253 conjunts are in the unsatisfiable core [2021-11-07 08:04:45,790 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:04:47,236 INFO L134 CoverageAnalysis]: Checked inductivity of 13423 backedges. 0 proven. 13423 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:04:47,237 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [573427728] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:04:47,237 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 08:04:47,237 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [127, 127] total 129 [2021-11-07 08:04:47,237 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316169811] [2021-11-07 08:04:47,238 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 130 states [2021-11-07 08:04:47,238 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:04:47,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 130 interpolants. [2021-11-07 08:04:47,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4289, Invalid=12481, Unknown=0, NotChecked=0, Total=16770 [2021-11-07 08:04:47,240 INFO L87 Difference]: Start difference. First operand 2833 states and 11358 transitions. Second operand has 130 states, 129 states have (on average 2.9689922480620154) internal successors, (383), 130 states have internal predecessors, (383), 64 states have call successors, (64), 64 states have call predecessors, (64), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:04:57,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:04:57,749 INFO L93 Difference]: Finished difference Result 2887 states and 11773 transitions. [2021-11-07 08:04:57,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2021-11-07 08:04:57,750 INFO L78 Accepts]: Start accepts. Automaton has has 130 states, 129 states have (on average 2.9689922480620154) internal successors, (383), 130 states have internal predecessors, (383), 64 states have call successors, (64), 64 states have call predecessors, (64), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 441 [2021-11-07 08:04:57,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:04:57,793 INFO L225 Difference]: With dead ends: 2887 [2021-11-07 08:04:57,794 INFO L226 Difference]: Without dead ends: 2886 [2021-11-07 08:04:57,798 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 693 GetRequests, 502 SyntacticMatches, 0 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6289 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=10402, Invalid=26654, Unknown=0, NotChecked=0, Total=37056 [2021-11-07 08:04:57,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2886 states. [2021-11-07 08:04:58,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2886 to 2884. [2021-11-07 08:04:58,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2884 states, 2087 states have (on average 1.0349784379492093) internal successors, (2160), 2025 states have internal predecessors, (2160), 462 states have call successors, (462), 251 states have call predecessors, (462), 332 states have return successors, (9147), 607 states have call predecessors, (9147), 430 states have call successors, (9147) [2021-11-07 08:04:58,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2884 states to 2884 states and 11769 transitions. [2021-11-07 08:04:58,144 INFO L78 Accepts]: Start accepts. Automaton has 2884 states and 11769 transitions. Word has length 441 [2021-11-07 08:04:58,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:04:58,144 INFO L470 AbstractCegarLoop]: Abstraction has 2884 states and 11769 transitions. [2021-11-07 08:04:58,145 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 130 states, 129 states have (on average 2.9689922480620154) internal successors, (383), 130 states have internal predecessors, (383), 64 states have call successors, (64), 64 states have call predecessors, (64), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:04:58,145 INFO L276 IsEmpty]: Start isEmpty. Operand 2884 states and 11769 transitions. [2021-11-07 08:04:58,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 449 [2021-11-07 08:04:58,197 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:04:58,197 INFO L513 BasicCegarLoop]: trace histogram [64, 64, 63, 63, 63, 63, 63, 1, 1, 1, 1, 1] [2021-11-07 08:04:58,243 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Ended with exit code 0 [2021-11-07 08:04:58,397 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79,76 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:04:58,398 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting applyHanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [applyHanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2021-11-07 08:04:58,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:04:58,398 INFO L85 PathProgramCache]: Analyzing trace with hash 853337539, now seen corresponding path program 63 times [2021-11-07 08:04:58,398 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:04:58,399 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793774077] [2021-11-07 08:04:58,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:04:58,399 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:04:58,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:05:03,598 INFO L134 CoverageAnalysis]: Checked inductivity of 13860 backedges. 0 proven. 13860 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:05:03,598 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:05:03,599 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793774077] [2021-11-07 08:05:03,599 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793774077] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:05:03,599 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1186826652] [2021-11-07 08:05:03,599 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 08:05:03,599 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:05:03,600 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:05:03,601 INFO L229 MonitoredProcess]: Starting monitored process 77 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:05:03,602 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Waiting until timeout for monitored process [2021-11-07 08:05:10,743 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 64 check-sat command(s) [2021-11-07 08:05:10,743 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 08:05:10,764 INFO L263 TraceCheckSpWp]: Trace formula consists of 1892 conjuncts, 257 conjunts are in the unsatisfiable core [2021-11-07 08:05:10,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:05:12,228 INFO L134 CoverageAnalysis]: Checked inductivity of 13860 backedges. 0 proven. 13860 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:05:12,228 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1186826652] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:05:12,229 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 08:05:12,229 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [129, 129] total 131 [2021-11-07 08:05:12,229 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537371726] [2021-11-07 08:05:12,230 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 132 states [2021-11-07 08:05:12,230 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:05:12,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 132 interpolants. [2021-11-07 08:05:12,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4421, Invalid=12871, Unknown=0, NotChecked=0, Total=17292 [2021-11-07 08:05:12,233 INFO L87 Difference]: Start difference. First operand 2884 states and 11769 transitions. Second operand has 132 states, 131 states have (on average 2.969465648854962) internal successors, (389), 132 states have internal predecessors, (389), 65 states have call successors, (65), 65 states have call predecessors, (65), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:05:22,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:05:22,557 INFO L93 Difference]: Finished difference Result 3068 states and 12322 transitions. [2021-11-07 08:05:22,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 130 states. [2021-11-07 08:05:22,558 INFO L78 Accepts]: Start accepts. Automaton has has 132 states, 131 states have (on average 2.969465648854962) internal successors, (389), 132 states have internal predecessors, (389), 65 states have call successors, (65), 65 states have call predecessors, (65), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 448 [2021-11-07 08:05:22,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:05:22,604 INFO L225 Difference]: With dead ends: 3068 [2021-11-07 08:05:22,604 INFO L226 Difference]: Without dead ends: 3067 [2021-11-07 08:05:22,610 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 704 GetRequests, 510 SyntacticMatches, 0 SemanticMatches, 194 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6485 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=10727, Invalid=27493, Unknown=0, NotChecked=0, Total=38220 [2021-11-07 08:05:22,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3067 states. [2021-11-07 08:05:22,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3067 to 2929. [2021-11-07 08:05:22,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2929 states, 2119 states have (on average 1.0349221330816423) internal successors, (2193), 2056 states have internal predecessors, (2193), 469 states have call successors, (469), 255 states have call predecessors, (469), 338 states have return successors, (9508), 617 states have call predecessors, (9508), 437 states have call successors, (9508) [2021-11-07 08:05:22,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2929 states to 2929 states and 12170 transitions. [2021-11-07 08:05:22,958 INFO L78 Accepts]: Start accepts. Automaton has 2929 states and 12170 transitions. Word has length 448 [2021-11-07 08:05:22,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:05:22,958 INFO L470 AbstractCegarLoop]: Abstraction has 2929 states and 12170 transitions. [2021-11-07 08:05:22,959 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 132 states, 131 states have (on average 2.969465648854962) internal successors, (389), 132 states have internal predecessors, (389), 65 states have call successors, (65), 65 states have call predecessors, (65), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:05:22,959 INFO L276 IsEmpty]: Start isEmpty. Operand 2929 states and 12170 transitions. [2021-11-07 08:05:23,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 456 [2021-11-07 08:05:23,037 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:05:23,037 INFO L513 BasicCegarLoop]: trace histogram [65, 65, 64, 64, 64, 64, 64, 1, 1, 1, 1, 1] [2021-11-07 08:05:23,099 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Forceful destruction successful, exit code 0 [2021-11-07 08:05:23,250 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,77 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:05:23,250 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting applyHanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [applyHanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2021-11-07 08:05:23,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:05:23,251 INFO L85 PathProgramCache]: Analyzing trace with hash -868943062, now seen corresponding path program 64 times [2021-11-07 08:05:23,251 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:05:23,251 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373410036] [2021-11-07 08:05:23,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:05:23,251 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:05:23,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:05:28,589 INFO L134 CoverageAnalysis]: Checked inductivity of 14304 backedges. 0 proven. 14304 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:05:28,589 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:05:28,590 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373410036] [2021-11-07 08:05:28,590 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373410036] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:05:28,590 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [313112124] [2021-11-07 08:05:28,590 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-07 08:05:28,590 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:05:28,590 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:05:28,591 INFO L229 MonitoredProcess]: Starting monitored process 78 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:05:28,592 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Waiting until timeout for monitored process [2021-11-07 08:05:35,224 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-07 08:05:35,224 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 08:05:35,241 INFO L263 TraceCheckSpWp]: Trace formula consists of 1921 conjuncts, 261 conjunts are in the unsatisfiable core [2021-11-07 08:05:35,400 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:05:36,870 INFO L134 CoverageAnalysis]: Checked inductivity of 14304 backedges. 0 proven. 14304 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:05:36,871 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [313112124] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:05:36,871 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 08:05:36,871 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [131, 131] total 133 [2021-11-07 08:05:36,871 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679345787] [2021-11-07 08:05:36,872 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 134 states [2021-11-07 08:05:36,872 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:05:36,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 134 interpolants. [2021-11-07 08:05:36,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4555, Invalid=13267, Unknown=0, NotChecked=0, Total=17822 [2021-11-07 08:05:36,874 INFO L87 Difference]: Start difference. First operand 2929 states and 12170 transitions. Second operand has 134 states, 133 states have (on average 2.969924812030075) internal successors, (395), 134 states have internal predecessors, (395), 66 states have call successors, (66), 66 states have call predecessors, (66), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:05:48,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:05:48,689 INFO L93 Difference]: Finished difference Result 3119 states and 12749 transitions. [2021-11-07 08:05:48,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 132 states. [2021-11-07 08:05:48,690 INFO L78 Accepts]: Start accepts. Automaton has has 134 states, 133 states have (on average 2.969924812030075) internal successors, (395), 134 states have internal predecessors, (395), 66 states have call successors, (66), 66 states have call predecessors, (66), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 455 [2021-11-07 08:05:48,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:05:48,800 INFO L225 Difference]: With dead ends: 3119 [2021-11-07 08:05:48,801 INFO L226 Difference]: Without dead ends: 3118 [2021-11-07 08:05:48,806 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 715 GetRequests, 518 SyntacticMatches, 0 SemanticMatches, 197 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6684 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=11057, Invalid=28345, Unknown=0, NotChecked=0, Total=39402 [2021-11-07 08:05:48,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3118 states. [2021-11-07 08:05:49,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3118 to 2980. [2021-11-07 08:05:49,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2980 states, 2155 states have (on average 1.0348027842227379) internal successors, (2230), 2091 states have internal predecessors, (2230), 478 states have call successors, (478), 259 states have call predecessors, (478), 344 states have return successors, (9889), 629 states have call predecessors, (9889), 445 states have call successors, (9889) [2021-11-07 08:05:49,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2980 states to 2980 states and 12597 transitions. [2021-11-07 08:05:49,131 INFO L78 Accepts]: Start accepts. Automaton has 2980 states and 12597 transitions. Word has length 455 [2021-11-07 08:05:49,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:05:49,131 INFO L470 AbstractCegarLoop]: Abstraction has 2980 states and 12597 transitions. [2021-11-07 08:05:49,132 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 134 states, 133 states have (on average 2.969924812030075) internal successors, (395), 134 states have internal predecessors, (395), 66 states have call successors, (66), 66 states have call predecessors, (66), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:05:49,132 INFO L276 IsEmpty]: Start isEmpty. Operand 2980 states and 12597 transitions. [2021-11-07 08:05:49,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 463 [2021-11-07 08:05:49,187 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:05:49,187 INFO L513 BasicCegarLoop]: trace histogram [66, 66, 65, 65, 65, 65, 65, 1, 1, 1, 1, 1] [2021-11-07 08:05:49,234 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Ended with exit code 0 [2021-11-07 08:05:49,387 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,78 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:05:49,388 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting applyHanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [applyHanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2021-11-07 08:05:49,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:05:49,388 INFO L85 PathProgramCache]: Analyzing trace with hash -1004252189, now seen corresponding path program 65 times [2021-11-07 08:05:49,388 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:05:49,388 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159827032] [2021-11-07 08:05:49,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:05:49,389 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:05:49,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:05:54,999 INFO L134 CoverageAnalysis]: Checked inductivity of 14755 backedges. 0 proven. 14755 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:05:54,999 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:05:54,999 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159827032] [2021-11-07 08:05:54,999 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159827032] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:05:54,999 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1562541472] [2021-11-07 08:05:54,999 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-07 08:05:54,999 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:05:55,000 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:05:55,000 INFO L229 MonitoredProcess]: Starting monitored process 79 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:05:55,001 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Waiting until timeout for monitored process [2021-11-07 08:06:02,402 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 66 check-sat command(s) [2021-11-07 08:06:02,402 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 08:06:02,419 INFO L263 TraceCheckSpWp]: Trace formula consists of 1950 conjuncts, 265 conjunts are in the unsatisfiable core [2021-11-07 08:06:02,427 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:06:03,984 INFO L134 CoverageAnalysis]: Checked inductivity of 14755 backedges. 0 proven. 14755 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:06:03,985 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1562541472] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:06:03,985 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 08:06:03,985 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [133, 133] total 135 [2021-11-07 08:06:03,985 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371397989] [2021-11-07 08:06:03,986 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 136 states [2021-11-07 08:06:03,987 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:06:03,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 136 interpolants. [2021-11-07 08:06:03,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4691, Invalid=13669, Unknown=0, NotChecked=0, Total=18360 [2021-11-07 08:06:03,991 INFO L87 Difference]: Start difference. First operand 2980 states and 12597 transitions. Second operand has 136 states, 135 states have (on average 2.9703703703703703) internal successors, (401), 136 states have internal predecessors, (401), 67 states have call successors, (67), 67 states have call predecessors, (67), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:06:15,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:06:15,623 INFO L93 Difference]: Finished difference Result 3300 states and 13315 transitions. [2021-11-07 08:06:15,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 134 states. [2021-11-07 08:06:15,623 INFO L78 Accepts]: Start accepts. Automaton has has 136 states, 135 states have (on average 2.9703703703703703) internal successors, (401), 136 states have internal predecessors, (401), 67 states have call successors, (67), 67 states have call predecessors, (67), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 462 [2021-11-07 08:06:15,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:06:15,680 INFO L225 Difference]: With dead ends: 3300 [2021-11-07 08:06:15,681 INFO L226 Difference]: Without dead ends: 3299 [2021-11-07 08:06:15,687 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 726 GetRequests, 526 SyntacticMatches, 0 SemanticMatches, 200 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6886 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=11392, Invalid=29210, Unknown=0, NotChecked=0, Total=40602 [2021-11-07 08:06:15,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3299 states. [2021-11-07 08:06:15,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3299 to 3025. [2021-11-07 08:06:15,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3025 states, 2187 states have (on average 1.0347508001828989) internal successors, (2263), 2122 states have internal predecessors, (2263), 485 states have call successors, (485), 263 states have call predecessors, (485), 350 states have return successors, (10267), 639 states have call predecessors, (10267), 452 states have call successors, (10267) [2021-11-07 08:06:16,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3025 states to 3025 states and 13015 transitions. [2021-11-07 08:06:16,035 INFO L78 Accepts]: Start accepts. Automaton has 3025 states and 13015 transitions. Word has length 462 [2021-11-07 08:06:16,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:06:16,036 INFO L470 AbstractCegarLoop]: Abstraction has 3025 states and 13015 transitions. [2021-11-07 08:06:16,036 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 136 states, 135 states have (on average 2.9703703703703703) internal successors, (401), 136 states have internal predecessors, (401), 67 states have call successors, (67), 67 states have call predecessors, (67), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:06:16,036 INFO L276 IsEmpty]: Start isEmpty. Operand 3025 states and 13015 transitions. [2021-11-07 08:06:16,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 470 [2021-11-07 08:06:16,094 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:06:16,094 INFO L513 BasicCegarLoop]: trace histogram [67, 67, 66, 66, 66, 66, 66, 1, 1, 1, 1, 1] [2021-11-07 08:06:16,143 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Forceful destruction successful, exit code 0 [2021-11-07 08:06:16,295 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 79 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80015118-f043-42a4-b953-18ce12794fa1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable82 [2021-11-07 08:06:16,295 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting applyHanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [applyHanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, applyHanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2021-11-07 08:06:16,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:06:16,295 INFO L85 PathProgramCache]: Analyzing trace with hash 1249601802, now seen corresponding path program 66 times [2021-11-07 08:06:16,296 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:06:16,296 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826672966] [2021-11-07 08:06:16,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:06:16,296 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:06:16,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat