./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test1-2.i --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_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/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_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/config/AutomizerReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test1-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/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_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/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 60f6803c5e3744d9299e1af81cd011414f5ac623b556345642fa85a1d93686e4 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 07:22:01,943 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 07:22:01,945 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 07:22:01,976 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 07:22:01,977 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 07:22:01,978 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 07:22:01,980 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 07:22:01,982 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 07:22:01,984 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 07:22:01,985 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 07:22:01,986 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 07:22:01,988 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 07:22:01,988 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 07:22:01,990 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 07:22:01,991 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 07:22:01,993 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 07:22:01,994 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 07:22:01,995 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 07:22:01,997 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 07:22:01,999 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 07:22:02,001 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 07:22:02,003 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 07:22:02,004 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 07:22:02,005 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 07:22:02,009 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 07:22:02,009 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 07:22:02,010 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 07:22:02,011 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 07:22:02,011 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 07:22:02,012 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 07:22:02,013 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 07:22:02,014 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 07:22:02,015 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 07:22:02,016 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 07:22:02,017 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 07:22:02,017 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 07:22:02,018 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 07:22:02,018 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 07:22:02,019 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 07:22:02,020 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 07:22:02,021 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 07:22:02,025 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/config/svcomp-Overflow-32bit-Automizer_Default.epf [2021-11-07 07:22:02,075 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 07:22:02,076 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 07:22:02,077 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 07:22:02,077 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 07:22:02,084 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 07:22:02,084 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 07:22:02,084 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 07:22:02,084 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 07:22:02,085 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 07:22:02,085 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-07 07:22:02,085 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 07:22:02,085 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 07:22:02,085 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 07:22:02,086 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 07:22:02,086 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 07:22:02,086 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 07:22:02,086 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-11-07 07:22:02,086 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 07:22:02,087 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 07:22:02,105 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 07:22:02,105 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 07:22:02,106 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 07:22:02,106 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 07:22:02,107 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 07:22:02,107 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 07:22:02,107 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 07:22:02,107 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 07:22:02,107 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 07:22:02,108 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 07:22:02,108 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 07:22:02,108 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 07:22:02,108 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 07:22:02,108 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_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 60f6803c5e3744d9299e1af81cd011414f5ac623b556345642fa85a1d93686e4 [2021-11-07 07:22:02,335 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 07:22:02,355 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 07:22:02,358 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 07:22:02,359 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 07:22:02,364 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 07:22:02,365 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test1-2.i [2021-11-07 07:22:02,436 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/data/ef3bbe91c/aa42f04623fe4400abb35f81c31d0c81/FLAG808b24090 [2021-11-07 07:22:03,035 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 07:22:03,036 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test1-2.i [2021-11-07 07:22:03,054 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/data/ef3bbe91c/aa42f04623fe4400abb35f81c31d0c81/FLAG808b24090 [2021-11-07 07:22:03,262 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/data/ef3bbe91c/aa42f04623fe4400abb35f81c31d0c81 [2021-11-07 07:22:03,264 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 07:22:03,269 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 07:22:03,271 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 07:22:03,271 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 07:22:03,276 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 07:22:03,277 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 07:22:03" (1/1) ... [2021-11-07 07:22:03,278 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57dab8b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:22:03, skipping insertion in model container [2021-11-07 07:22:03,278 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 07:22:03" (1/1) ... [2021-11-07 07:22:03,285 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 07:22:03,339 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 07:22:03,790 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_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test1-2.i[33021,33034] [2021-11-07 07:22:03,919 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 07:22:03,936 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 07:22:03,979 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_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test1-2.i[33021,33034] [2021-11-07 07:22:04,031 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 07:22:04,072 INFO L208 MainTranslator]: Completed translation [2021-11-07 07:22:04,073 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:22:04 WrapperNode [2021-11-07 07:22:04,073 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 07:22:04,074 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 07:22:04,074 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 07:22:04,074 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 07:22:04,081 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:22:04" (1/1) ... [2021-11-07 07:22:04,107 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:22:04" (1/1) ... [2021-11-07 07:22:04,161 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 07:22:04,162 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 07:22:04,162 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 07:22:04,162 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 07:22:04,170 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:22:04" (1/1) ... [2021-11-07 07:22:04,170 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:22:04" (1/1) ... [2021-11-07 07:22:04,189 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:22:04" (1/1) ... [2021-11-07 07:22:04,189 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:22:04" (1/1) ... [2021-11-07 07:22:04,242 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:22:04" (1/1) ... [2021-11-07 07:22:04,252 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:22:04" (1/1) ... [2021-11-07 07:22:04,256 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:22:04" (1/1) ... [2021-11-07 07:22:04,263 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 07:22:04,264 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 07:22:04,264 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 07:22:04,264 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 07:22:04,268 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:22:04" (1/1) ... [2021-11-07 07:22:04,277 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 07:22:04,288 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:22:04,305 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 07:22:04,324 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 07:22:04,355 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-07 07:22:04,356 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-07 07:22:04,356 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 07:22:04,356 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 07:22:04,356 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 07:22:04,356 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 07:22:04,357 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 07:22:04,357 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 07:22:04,357 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 07:22:04,357 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 07:22:05,669 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 07:22:05,671 INFO L299 CfgBuilder]: Removed 72 assume(true) statements. [2021-11-07 07:22:05,673 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 07:22:05 BoogieIcfgContainer [2021-11-07 07:22:05,673 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 07:22:05,677 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 07:22:05,677 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 07:22:05,681 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 07:22:05,681 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 07:22:03" (1/3) ... [2021-11-07 07:22:05,682 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6120a1db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 07:22:05, skipping insertion in model container [2021-11-07 07:22:05,683 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:22:04" (2/3) ... [2021-11-07 07:22:05,683 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6120a1db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 07:22:05, skipping insertion in model container [2021-11-07 07:22:05,683 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 07:22:05" (3/3) ... [2021-11-07 07:22:05,688 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_JEN_test1-2.i [2021-11-07 07:22:05,693 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 07:22:05,693 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-11-07 07:22:05,747 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 07:22:05,756 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 07:22:05,756 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-11-07 07:22:05,785 INFO L276 IsEmpty]: Start isEmpty. Operand has 159 states, 152 states have (on average 1.7236842105263157) internal successors, (262), 158 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:22:05,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-07 07:22:05,790 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:22:05,791 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-07 07:22:05,791 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 07:22:05,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:22:05,797 INFO L85 PathProgramCache]: Analyzing trace with hash 889985515, now seen corresponding path program 1 times [2021-11-07 07:22:05,805 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:22:05,806 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801023570] [2021-11-07 07:22:05,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:22:05,807 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:22:05,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:22:05,977 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 07:22:05,977 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:22:05,978 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801023570] [2021-11-07 07:22:05,978 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801023570] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:22:05,979 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:22:05,979 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 07:22:05,981 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649297551] [2021-11-07 07:22:05,985 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 07:22:05,985 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:22:06,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 07:22:06,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 07:22:06,006 INFO L87 Difference]: Start difference. First operand has 159 states, 152 states have (on average 1.7236842105263157) internal successors, (262), 158 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:22:06,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:22:06,123 INFO L93 Difference]: Finished difference Result 408 states and 679 transitions. [2021-11-07 07:22:06,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 07:22:06,125 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-11-07 07:22:06,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:22:06,142 INFO L225 Difference]: With dead ends: 408 [2021-11-07 07:22:06,143 INFO L226 Difference]: Without dead ends: 218 [2021-11-07 07:22:06,147 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 07:22:06,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2021-11-07 07:22:06,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 129. [2021-11-07 07:22:06,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 124 states have (on average 1.346774193548387) internal successors, (167), 128 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:22:06,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 167 transitions. [2021-11-07 07:22:06,199 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 167 transitions. Word has length 6 [2021-11-07 07:22:06,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:22:06,200 INFO L470 AbstractCegarLoop]: Abstraction has 129 states and 167 transitions. [2021-11-07 07:22:06,200 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:22:06,200 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 167 transitions. [2021-11-07 07:22:06,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-07 07:22:06,202 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:22:06,203 INFO L513 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1] [2021-11-07 07:22:06,203 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 07:22:06,203 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 07:22:06,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:22:06,204 INFO L85 PathProgramCache]: Analyzing trace with hash 703481080, now seen corresponding path program 1 times [2021-11-07 07:22:06,204 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:22:06,204 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658236765] [2021-11-07 07:22:06,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:22:06,205 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:22:06,232 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 07:22:06,233 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1381123055] [2021-11-07 07:22:06,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:22:06,233 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:22:06,234 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:22:06,235 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:22:06,264 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-07 07:22:06,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:22:06,440 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 07:22:06,449 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:22:06,648 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 07:22:06,649 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:22:06,649 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658236765] [2021-11-07 07:22:06,649 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 07:22:06,650 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1381123055] [2021-11-07 07:22:06,650 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1381123055] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:22:06,650 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:22:06,650 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 07:22:06,651 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665621683] [2021-11-07 07:22:06,652 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 07:22:06,652 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:22:06,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 07:22:06,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 07:22:06,655 INFO L87 Difference]: Start difference. First operand 129 states and 167 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:22:06,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:22:06,762 INFO L93 Difference]: Finished difference Result 273 states and 359 transitions. [2021-11-07 07:22:06,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 07:22:06,764 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2021-11-07 07:22:06,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:22:06,767 INFO L225 Difference]: With dead ends: 273 [2021-11-07 07:22:06,768 INFO L226 Difference]: Without dead ends: 150 [2021-11-07 07:22:06,772 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 07:22:06,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2021-11-07 07:22:06,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 149. [2021-11-07 07:22:06,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 144 states have (on average 1.2986111111111112) internal successors, (187), 148 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:22:06,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 187 transitions. [2021-11-07 07:22:06,786 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 187 transitions. Word has length 56 [2021-11-07 07:22:06,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:22:06,787 INFO L470 AbstractCegarLoop]: Abstraction has 149 states and 187 transitions. [2021-11-07 07:22:06,787 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:22:06,789 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 187 transitions. [2021-11-07 07:22:06,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-07 07:22:06,795 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:22:06,795 INFO L513 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1] [2021-11-07 07:22:06,833 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-07 07:22:07,016 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:22:07,017 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 07:22:07,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:22:07,018 INFO L85 PathProgramCache]: Analyzing trace with hash 680848826, now seen corresponding path program 1 times [2021-11-07 07:22:07,018 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:22:07,018 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207035097] [2021-11-07 07:22:07,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:22:07,018 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:22:07,039 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 07:22:07,039 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [341372928] [2021-11-07 07:22:07,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:22:07,039 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:22:07,040 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:22:07,040 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:22:07,073 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-07 07:22:07,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:22:07,249 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 07:22:07,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:22:07,383 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 07:22:07,383 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:22:07,384 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207035097] [2021-11-07 07:22:07,384 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 07:22:07,384 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [341372928] [2021-11-07 07:22:07,385 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [341372928] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:22:07,389 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:22:07,389 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 07:22:07,389 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193165599] [2021-11-07 07:22:07,390 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 07:22:07,390 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:22:07,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 07:22:07,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 07:22:07,391 INFO L87 Difference]: Start difference. First operand 149 states and 187 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:22:07,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:22:07,466 INFO L93 Difference]: Finished difference Result 283 states and 359 transitions. [2021-11-07 07:22:07,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 07:22:07,467 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2021-11-07 07:22:07,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:22:07,469 INFO L225 Difference]: With dead ends: 283 [2021-11-07 07:22:07,469 INFO L226 Difference]: Without dead ends: 140 [2021-11-07 07:22:07,470 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 53 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 07:22:07,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2021-11-07 07:22:07,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 135. [2021-11-07 07:22:07,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 130 states have (on average 1.2769230769230768) internal successors, (166), 134 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:22:07,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 166 transitions. [2021-11-07 07:22:07,494 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 166 transitions. Word has length 56 [2021-11-07 07:22:07,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:22:07,494 INFO L470 AbstractCegarLoop]: Abstraction has 135 states and 166 transitions. [2021-11-07 07:22:07,495 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:22:07,495 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 166 transitions. [2021-11-07 07:22:07,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-07 07:22:07,499 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:22:07,499 INFO L513 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1] [2021-11-07 07:22:07,537 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-07 07:22:07,728 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:22:07,728 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 07:22:07,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:22:07,729 INFO L85 PathProgramCache]: Analyzing trace with hash -1567550038, now seen corresponding path program 1 times [2021-11-07 07:22:07,729 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:22:07,729 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389651029] [2021-11-07 07:22:07,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:22:07,729 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:22:07,749 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 07:22:07,764 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1049473706] [2021-11-07 07:22:07,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:22:07,764 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:22:07,765 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:22:07,767 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:22:07,804 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-07 07:22:07,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:22:07,945 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 07:22:07,960 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:22:08,113 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 07:22:08,114 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:22:08,115 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389651029] [2021-11-07 07:22:08,115 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 07:22:08,115 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1049473706] [2021-11-07 07:22:08,115 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1049473706] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:22:08,115 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:22:08,116 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 07:22:08,116 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793979743] [2021-11-07 07:22:08,116 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 07:22:08,117 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:22:08,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 07:22:08,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 07:22:08,118 INFO L87 Difference]: Start difference. First operand 135 states and 166 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:22:08,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:22:08,241 INFO L93 Difference]: Finished difference Result 395 states and 488 transitions. [2021-11-07 07:22:08,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 07:22:08,242 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2021-11-07 07:22:08,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:22:08,244 INFO L225 Difference]: With dead ends: 395 [2021-11-07 07:22:08,244 INFO L226 Difference]: Without dead ends: 266 [2021-11-07 07:22:08,246 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 07:22:08,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2021-11-07 07:22:08,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 158. [2021-11-07 07:22:08,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 153 states have (on average 1.2483660130718954) internal successors, (191), 157 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:22:08,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 191 transitions. [2021-11-07 07:22:08,264 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 191 transitions. Word has length 56 [2021-11-07 07:22:08,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:22:08,265 INFO L470 AbstractCegarLoop]: Abstraction has 158 states and 191 transitions. [2021-11-07 07:22:08,265 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:22:08,265 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 191 transitions. [2021-11-07 07:22:08,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-07 07:22:08,266 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:22:08,266 INFO L513 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1] [2021-11-07 07:22:08,298 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-07 07:22:08,484 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2021-11-07 07:22:08,484 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 07:22:08,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:22:08,485 INFO L85 PathProgramCache]: Analyzing trace with hash 2145970276, now seen corresponding path program 1 times [2021-11-07 07:22:08,485 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:22:08,485 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909789652] [2021-11-07 07:22:08,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:22:08,485 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:22:08,515 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 07:22:08,518 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1538941730] [2021-11-07 07:22:08,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:22:08,518 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:22:08,518 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:22:08,519 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:22:08,552 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-07 07:22:08,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:22:08,733 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 07:22:08,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:22:08,894 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 07:22:08,894 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:22:08,900 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909789652] [2021-11-07 07:22:08,900 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 07:22:08,901 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1538941730] [2021-11-07 07:22:08,901 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1538941730] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:22:08,901 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:22:08,907 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 07:22:08,907 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426256522] [2021-11-07 07:22:08,909 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 07:22:08,909 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:22:08,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 07:22:08,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 07:22:08,912 INFO L87 Difference]: Start difference. First operand 158 states and 191 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:22:08,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:22:08,964 INFO L93 Difference]: Finished difference Result 282 states and 343 transitions. [2021-11-07 07:22:08,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 07:22:08,965 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2021-11-07 07:22:08,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:22:08,966 INFO L225 Difference]: With dead ends: 282 [2021-11-07 07:22:08,966 INFO L226 Difference]: Without dead ends: 130 [2021-11-07 07:22:08,967 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 53 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 07:22:08,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2021-11-07 07:22:08,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 126. [2021-11-07 07:22:08,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 121 states have (on average 1.256198347107438) internal successors, (152), 125 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:22:08,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 152 transitions. [2021-11-07 07:22:08,971 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 152 transitions. Word has length 56 [2021-11-07 07:22:08,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:22:08,972 INFO L470 AbstractCegarLoop]: Abstraction has 126 states and 152 transitions. [2021-11-07 07:22:08,972 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:22:08,972 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 152 transitions. [2021-11-07 07:22:08,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-07 07:22:08,973 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:22:08,973 INFO L513 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1] [2021-11-07 07:22:09,011 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-07 07:22:09,200 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:22:09,200 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 07:22:09,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:22:09,201 INFO L85 PathProgramCache]: Analyzing trace with hash -1590182292, now seen corresponding path program 1 times [2021-11-07 07:22:09,201 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:22:09,201 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766197857] [2021-11-07 07:22:09,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:22:09,201 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:22:09,215 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 07:22:09,215 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [255743471] [2021-11-07 07:22:09,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:22:09,216 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:22:09,216 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:22:09,217 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:22:09,250 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-07 07:22:09,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:22:09,435 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 07:22:09,437 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:22:09,624 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 07:22:09,625 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:22:09,625 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766197857] [2021-11-07 07:22:09,625 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 07:22:09,625 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [255743471] [2021-11-07 07:22:09,625 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [255743471] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:22:09,626 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:22:09,626 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 07:22:09,626 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024202724] [2021-11-07 07:22:09,627 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 07:22:09,627 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:22:09,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 07:22:09,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 07:22:09,628 INFO L87 Difference]: Start difference. First operand 126 states and 152 transitions. Second operand has 4 states, 3 states have (on average 18.666666666666668) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:22:09,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:22:09,663 INFO L93 Difference]: Finished difference Result 212 states and 253 transitions. [2021-11-07 07:22:09,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 07:22:09,664 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 18.666666666666668) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2021-11-07 07:22:09,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:22:09,665 INFO L225 Difference]: With dead ends: 212 [2021-11-07 07:22:09,665 INFO L226 Difference]: Without dead ends: 211 [2021-11-07 07:22:09,666 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 53 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 07:22:09,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2021-11-07 07:22:09,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 209. [2021-11-07 07:22:09,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 204 states have (on average 1.2254901960784315) internal successors, (250), 208 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:22:09,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 250 transitions. [2021-11-07 07:22:09,694 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 250 transitions. Word has length 56 [2021-11-07 07:22:09,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:22:09,694 INFO L470 AbstractCegarLoop]: Abstraction has 209 states and 250 transitions. [2021-11-07 07:22:09,694 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 18.666666666666668) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:22:09,695 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 250 transitions. [2021-11-07 07:22:09,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-07 07:22:09,695 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:22:09,695 INFO L513 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1] [2021-11-07 07:22:09,738 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-07 07:22:09,924 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:22:09,924 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 07:22:09,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:22:09,925 INFO L85 PathProgramCache]: Analyzing trace with hash -2051010371, now seen corresponding path program 1 times [2021-11-07 07:22:09,925 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:22:09,925 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94020592] [2021-11-07 07:22:09,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:22:09,925 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:22:09,941 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 07:22:09,945 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [132438819] [2021-11-07 07:22:09,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:22:09,945 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:22:09,946 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:22:09,947 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:22:09,968 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-07 07:22:10,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:22:10,168 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 07:22:10,171 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:22:10,341 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 07:22:10,342 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:22:10,342 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94020592] [2021-11-07 07:22:10,342 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 07:22:10,342 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [132438819] [2021-11-07 07:22:10,342 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [132438819] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:22:10,342 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:22:10,343 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 07:22:10,343 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136505051] [2021-11-07 07:22:10,343 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 07:22:10,344 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:22:10,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 07:22:10,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 07:22:10,345 INFO L87 Difference]: Start difference. First operand 209 states and 250 transitions. Second operand has 4 states, 3 states have (on average 19.0) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:22:10,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:22:10,384 INFO L93 Difference]: Finished difference Result 209 states and 250 transitions. [2021-11-07 07:22:10,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 07:22:10,386 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 19.0) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-11-07 07:22:10,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:22:10,388 INFO L225 Difference]: With dead ends: 209 [2021-11-07 07:22:10,388 INFO L226 Difference]: Without dead ends: 208 [2021-11-07 07:22:10,389 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 54 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 07:22:10,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2021-11-07 07:22:10,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 208. [2021-11-07 07:22:10,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 204 states have (on average 1.2205882352941178) internal successors, (249), 207 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:22:10,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 249 transitions. [2021-11-07 07:22:10,397 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 249 transitions. Word has length 57 [2021-11-07 07:22:10,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:22:10,398 INFO L470 AbstractCegarLoop]: Abstraction has 208 states and 249 transitions. [2021-11-07 07:22:10,398 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 19.0) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:22:10,398 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 249 transitions. [2021-11-07 07:22:10,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-07 07:22:10,399 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:22:10,399 INFO L513 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:22:10,434 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-07 07:22:10,624 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:22:10,624 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 07:22:10,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:22:10,625 INFO L85 PathProgramCache]: Analyzing trace with hash -1850265242, now seen corresponding path program 1 times [2021-11-07 07:22:10,625 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:22:10,625 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214531831] [2021-11-07 07:22:10,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:22:10,625 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:22:10,647 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 07:22:10,653 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1279003861] [2021-11-07 07:22:10,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:22:10,654 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:22:10,654 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:22:10,656 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:22:10,675 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-07 07:22:10,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:22:10,873 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 07:22:10,875 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:22:11,070 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:22:11,070 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:22:11,070 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214531831] [2021-11-07 07:22:11,071 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 07:22:11,071 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1279003861] [2021-11-07 07:22:11,071 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1279003861] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:22:11,071 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-07 07:22:11,071 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-11-07 07:22:11,072 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290602742] [2021-11-07 07:22:11,072 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 07:22:11,072 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:22:11,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 07:22:11,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 07:22:11,073 INFO L87 Difference]: Start difference. First operand 208 states and 249 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:22:19,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:22:19,072 INFO L93 Difference]: Finished difference Result 328 states and 395 transitions. [2021-11-07 07:22:19,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 07:22:19,072 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2021-11-07 07:22:19,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:22:19,074 INFO L225 Difference]: With dead ends: 328 [2021-11-07 07:22:19,075 INFO L226 Difference]: Without dead ends: 299 [2021-11-07 07:22:19,075 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-07 07:22:19,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2021-11-07 07:22:19,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 210. [2021-11-07 07:22:19,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 206 states have (on average 1.2184466019417475) internal successors, (251), 209 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:22:19,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 251 transitions. [2021-11-07 07:22:19,084 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 251 transitions. Word has length 61 [2021-11-07 07:22:19,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:22:19,084 INFO L470 AbstractCegarLoop]: Abstraction has 210 states and 251 transitions. [2021-11-07 07:22:19,085 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:22:19,085 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 251 transitions. [2021-11-07 07:22:19,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-07 07:22:19,085 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:22:19,086 INFO L513 BasicCegarLoop]: trace histogram [2, 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, 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, 1, 1, 1] [2021-11-07 07:22:19,122 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-11-07 07:22:19,301 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:22:19,301 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 07:22:19,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:22:19,302 INFO L85 PathProgramCache]: Analyzing trace with hash -1850587164, now seen corresponding path program 1 times [2021-11-07 07:22:19,302 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:22:19,302 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204923667] [2021-11-07 07:22:19,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:22:19,303 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:22:19,315 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 07:22:19,322 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1694833056] [2021-11-07 07:22:19,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:22:19,322 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:22:19,323 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:22:19,323 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:22:19,339 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-07 07:22:19,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:22:19,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 07:22:19,684 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:22:19,967 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 07:22:19,968 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:22:19,968 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204923667] [2021-11-07 07:22:19,968 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 07:22:19,968 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1694833056] [2021-11-07 07:22:19,968 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1694833056] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:22:19,969 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:22:19,969 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 07:22:19,969 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206965375] [2021-11-07 07:22:19,969 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 07:22:19,970 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:22:19,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 07:22:19,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 07:22:19,970 INFO L87 Difference]: Start difference. First operand 210 states and 251 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:22:20,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:22:20,008 INFO L93 Difference]: Finished difference Result 369 states and 448 transitions. [2021-11-07 07:22:20,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 07:22:20,009 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2021-11-07 07:22:20,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:22:20,011 INFO L225 Difference]: With dead ends: 369 [2021-11-07 07:22:20,011 INFO L226 Difference]: Without dead ends: 208 [2021-11-07 07:22:20,011 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 07:22:20,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2021-11-07 07:22:20,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 208. [2021-11-07 07:22:20,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 204 states have (on average 1.2156862745098038) internal successors, (248), 207 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:22:20,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 248 transitions. [2021-11-07 07:22:20,019 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 248 transitions. Word has length 61 [2021-11-07 07:22:20,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:22:20,020 INFO L470 AbstractCegarLoop]: Abstraction has 208 states and 248 transitions. [2021-11-07 07:22:20,020 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:22:20,020 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 248 transitions. [2021-11-07 07:22:20,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-07 07:22:20,021 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:22:20,021 INFO L513 BasicCegarLoop]: trace histogram [2, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:22:20,058 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-07 07:22:20,236 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:22:20,236 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 07:22:20,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:22:20,237 INFO L85 PathProgramCache]: Analyzing trace with hash 182245876, now seen corresponding path program 1 times [2021-11-07 07:22:20,237 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:22:20,237 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532409299] [2021-11-07 07:22:20,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:22:20,237 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:22:20,254 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 07:22:20,254 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [933725010] [2021-11-07 07:22:20,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:22:20,254 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:22:20,255 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:22:20,255 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:22:20,275 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-07 07:22:20,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:22:20,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 07:22:20,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:22:20,976 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 07:22:20,977 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:22:20,977 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532409299] [2021-11-07 07:22:20,977 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 07:22:20,977 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [933725010] [2021-11-07 07:22:20,978 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [933725010] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:22:20,978 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:22:20,978 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 07:22:20,978 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801300838] [2021-11-07 07:22:20,980 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 07:22:20,981 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:22:20,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 07:22:20,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 07:22:20,983 INFO L87 Difference]: Start difference. First operand 208 states and 248 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:22:21,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:22:21,014 INFO L93 Difference]: Finished difference Result 372 states and 452 transitions. [2021-11-07 07:22:21,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 07:22:21,015 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2021-11-07 07:22:21,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:22:21,016 INFO L225 Difference]: With dead ends: 372 [2021-11-07 07:22:21,016 INFO L226 Difference]: Without dead ends: 210 [2021-11-07 07:22:21,017 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 07:22:21,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2021-11-07 07:22:21,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 210. [2021-11-07 07:22:21,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 206 states have (on average 1.2135922330097086) internal successors, (250), 209 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:22:21,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 250 transitions. [2021-11-07 07:22:21,026 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 250 transitions. Word has length 68 [2021-11-07 07:22:21,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:22:21,026 INFO L470 AbstractCegarLoop]: Abstraction has 210 states and 250 transitions. [2021-11-07 07:22:21,026 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:22:21,027 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 250 transitions. [2021-11-07 07:22:21,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-07 07:22:21,027 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:22:21,027 INFO L513 BasicCegarLoop]: trace histogram [2, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:22:21,066 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-07 07:22:21,256 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-07 07:22:21,256 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 07:22:21,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:22:21,256 INFO L85 PathProgramCache]: Analyzing trace with hash 1174858719, now seen corresponding path program 1 times [2021-11-07 07:22:21,257 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:22:21,257 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591492782] [2021-11-07 07:22:21,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:22:21,257 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:22:21,270 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 07:22:21,270 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1919390004] [2021-11-07 07:22:21,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:22:21,271 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:22:21,271 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:22:21,272 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:22:21,308 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-07 07:22:21,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:22:21,942 INFO L263 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 07:22:21,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:22:22,095 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 07:22:22,095 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:22:22,095 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591492782] [2021-11-07 07:22:22,095 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 07:22:22,095 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1919390004] [2021-11-07 07:22:22,096 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1919390004] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:22:22,096 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:22:22,096 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 07:22:22,096 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787843520] [2021-11-07 07:22:22,097 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 07:22:22,097 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:22:22,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 07:22:22,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 07:22:22,097 INFO L87 Difference]: Start difference. First operand 210 states and 250 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:22:22,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:22:22,120 INFO L93 Difference]: Finished difference Result 379 states and 460 transitions. [2021-11-07 07:22:22,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 07:22:22,121 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2021-11-07 07:22:22,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:22:22,123 INFO L225 Difference]: With dead ends: 379 [2021-11-07 07:22:22,123 INFO L226 Difference]: Without dead ends: 212 [2021-11-07 07:22:22,123 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 07:22:22,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2021-11-07 07:22:22,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 212. [2021-11-07 07:22:22,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 208 states have (on average 1.2115384615384615) internal successors, (252), 211 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:22:22,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 252 transitions. [2021-11-07 07:22:22,132 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 252 transitions. Word has length 69 [2021-11-07 07:22:22,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:22:22,133 INFO L470 AbstractCegarLoop]: Abstraction has 212 states and 252 transitions. [2021-11-07 07:22:22,133 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:22:22,133 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 252 transitions. [2021-11-07 07:22:22,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-07 07:22:22,134 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:22:22,134 INFO L513 BasicCegarLoop]: trace histogram [2, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:22:22,174 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-07 07:22:22,348 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:22:22,348 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 07:22:22,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:22:22,348 INFO L85 PathProgramCache]: Analyzing trace with hash 31134581, now seen corresponding path program 1 times [2021-11-07 07:22:22,348 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:22:22,349 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576150265] [2021-11-07 07:22:22,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:22:22,349 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:22:22,361 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 07:22:22,361 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1040025093] [2021-11-07 07:22:22,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:22:22,362 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:22:22,362 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:22:22,363 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:22:22,388 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-07 07:22:22,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:22:22,994 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-07 07:22:22,996 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:22:23,187 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 07:22:23,187 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:22:23,187 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576150265] [2021-11-07 07:22:23,188 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 07:22:23,188 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1040025093] [2021-11-07 07:22:23,188 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1040025093] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:22:23,188 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-07 07:22:23,188 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2021-11-07 07:22:23,189 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445348923] [2021-11-07 07:22:23,189 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 07:22:23,189 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:22:23,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 07:22:23,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 07:22:23,190 INFO L87 Difference]: Start difference. First operand 212 states and 252 transitions. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:22:23,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:22:23,225 INFO L93 Difference]: Finished difference Result 382 states and 463 transitions. [2021-11-07 07:22:23,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 07:22:23,226 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2021-11-07 07:22:23,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:22:23,228 INFO L225 Difference]: With dead ends: 382 [2021-11-07 07:22:23,228 INFO L226 Difference]: Without dead ends: 214 [2021-11-07 07:22:23,228 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 07:22:23,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2021-11-07 07:22:23,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 214. [2021-11-07 07:22:23,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 210 states have (on average 1.2095238095238094) internal successors, (254), 213 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:22:23,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 254 transitions. [2021-11-07 07:22:23,237 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 254 transitions. Word has length 70 [2021-11-07 07:22:23,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:22:23,238 INFO L470 AbstractCegarLoop]: Abstraction has 214 states and 254 transitions. [2021-11-07 07:22:23,238 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:22:23,238 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 254 transitions. [2021-11-07 07:22:23,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-07 07:22:23,239 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:22:23,239 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:22:23,284 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-07 07:22:23,452 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-11-07 07:22:23,452 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 07:22:23,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:22:23,452 INFO L85 PathProgramCache]: Analyzing trace with hash -1064575329, now seen corresponding path program 2 times [2021-11-07 07:22:23,452 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:22:23,452 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889699541] [2021-11-07 07:22:23,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:22:23,453 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:22:23,462 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 07:22:23,463 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1700702136] [2021-11-07 07:22:23,463 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 07:22:23,463 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:22:23,463 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:22:23,467 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:22:23,468 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-07 07:22:24,020 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 07:22:24,021 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:22:24,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-07 07:22:24,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:22:24,234 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:22:24,235 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:22:24,235 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889699541] [2021-11-07 07:22:24,235 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 07:22:24,235 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1700702136] [2021-11-07 07:22:24,235 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1700702136] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:22:24,236 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-07 07:22:24,236 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-11-07 07:22:24,236 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405400923] [2021-11-07 07:22:24,236 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 07:22:24,237 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:22:24,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 07:22:24,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 07:22:24,238 INFO L87 Difference]: Start difference. First operand 214 states and 254 transitions. Second operand has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:22:24,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:22:24,318 INFO L93 Difference]: Finished difference Result 665 states and 811 transitions. [2021-11-07 07:22:24,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 07:22:24,319 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2021-11-07 07:22:24,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:22:24,322 INFO L225 Difference]: With dead ends: 665 [2021-11-07 07:22:24,322 INFO L226 Difference]: Without dead ends: 500 [2021-11-07 07:22:24,322 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 07:22:24,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2021-11-07 07:22:24,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 216. [2021-11-07 07:22:24,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 212 states have (on average 1.2075471698113207) internal successors, (256), 215 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:22:24,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 256 transitions. [2021-11-07 07:22:24,334 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 256 transitions. Word has length 71 [2021-11-07 07:22:24,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:22:24,335 INFO L470 AbstractCegarLoop]: Abstraction has 216 states and 256 transitions. [2021-11-07 07:22:24,335 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:22:24,335 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 256 transitions. [2021-11-07 07:22:24,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-07 07:22:24,336 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:22:24,336 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:22:24,375 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2021-11-07 07:22:24,552 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-11-07 07:22:24,552 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 07:22:24,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:22:24,552 INFO L85 PathProgramCache]: Analyzing trace with hash 1178107028, now seen corresponding path program 3 times [2021-11-07 07:22:24,553 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:22:24,553 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811642599] [2021-11-07 07:22:24,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:22:24,553 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:22:24,567 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 07:22:24,568 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [963787723] [2021-11-07 07:22:24,568 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 07:22:24,568 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:22:24,568 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:22:24,569 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:22:24,596 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-07 07:22:25,103 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-07 07:22:25,103 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:22:25,105 INFO L263 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-07 07:22:25,106 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:22:25,321 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 07:22:25,321 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:22:25,322 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811642599] [2021-11-07 07:22:25,322 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 07:22:25,322 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [963787723] [2021-11-07 07:22:25,322 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [963787723] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:22:25,322 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-07 07:22:25,322 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2021-11-07 07:22:25,322 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557726433] [2021-11-07 07:22:25,323 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 07:22:25,323 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:22:25,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 07:22:25,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 07:22:25,324 INFO L87 Difference]: Start difference. First operand 216 states and 256 transitions. Second operand has 5 states, 4 states have (on average 17.5) internal successors, (70), 5 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:22:25,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:22:25,378 INFO L93 Difference]: Finished difference Result 309 states and 364 transitions. [2021-11-07 07:22:25,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 07:22:25,379 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 17.5) internal successors, (70), 5 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2021-11-07 07:22:25,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:22:25,381 INFO L225 Difference]: With dead ends: 309 [2021-11-07 07:22:25,382 INFO L226 Difference]: Without dead ends: 308 [2021-11-07 07:22:25,382 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 68 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 07:22:25,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2021-11-07 07:22:25,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 219. [2021-11-07 07:22:25,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 215 states have (on average 1.2046511627906977) internal successors, (259), 218 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:22:25,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 259 transitions. [2021-11-07 07:22:25,392 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 259 transitions. Word has length 72 [2021-11-07 07:22:25,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:22:25,393 INFO L470 AbstractCegarLoop]: Abstraction has 219 states and 259 transitions. [2021-11-07 07:22:25,393 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 17.5) internal successors, (70), 5 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:22:25,393 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 259 transitions. [2021-11-07 07:22:25,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-11-07 07:22:25,395 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:22:25,396 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:22:25,431 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-11-07 07:22:25,612 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:22:25,612 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 07:22:25,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:22:25,612 INFO L85 PathProgramCache]: Analyzing trace with hash -916715049, now seen corresponding path program 1 times [2021-11-07 07:22:25,612 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:22:25,613 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638109296] [2021-11-07 07:22:25,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:22:25,613 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:22:25,644 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 07:22:25,646 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1619232887] [2021-11-07 07:22:25,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:22:25,646 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:22:25,647 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:22:25,647 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:22:25,667 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-07 07:22:26,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:22:26,022 INFO L263 TraceCheckSpWp]: Trace formula consists of 412 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 07:22:26,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:22:26,330 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 07:22:26,330 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:22:26,330 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638109296] [2021-11-07 07:22:26,331 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 07:22:26,331 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1619232887] [2021-11-07 07:22:26,331 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1619232887] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:22:26,331 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-07 07:22:26,331 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-11-07 07:22:26,332 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585602334] [2021-11-07 07:22:26,332 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 07:22:26,332 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:22:26,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 07:22:26,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 07:22:26,333 INFO L87 Difference]: Start difference. First operand 219 states and 259 transitions. Second operand has 6 states, 5 states have (on average 24.0) internal successors, (120), 6 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:22:26,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:22:26,392 INFO L93 Difference]: Finished difference Result 308 states and 363 transitions. [2021-11-07 07:22:26,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 07:22:26,393 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 24.0) internal successors, (120), 6 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 122 [2021-11-07 07:22:26,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:22:26,395 INFO L225 Difference]: With dead ends: 308 [2021-11-07 07:22:26,395 INFO L226 Difference]: Without dead ends: 307 [2021-11-07 07:22:26,396 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-07 07:22:26,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2021-11-07 07:22:26,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 306. [2021-11-07 07:22:26,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 306 states, 302 states have (on average 1.195364238410596) internal successors, (361), 305 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:22:26,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 361 transitions. [2021-11-07 07:22:26,410 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 361 transitions. Word has length 122 [2021-11-07 07:22:26,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:22:26,411 INFO L470 AbstractCegarLoop]: Abstraction has 306 states and 361 transitions. [2021-11-07 07:22:26,411 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 24.0) internal successors, (120), 6 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:22:26,411 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 361 transitions. [2021-11-07 07:22:26,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-11-07 07:22:26,412 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:22:26,413 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:22:26,449 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-11-07 07:22:26,632 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:22:26,632 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 07:22:26,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:22:26,632 INFO L85 PathProgramCache]: Analyzing trace with hash -1843375909, now seen corresponding path program 1 times [2021-11-07 07:22:26,633 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:22:26,633 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722688724] [2021-11-07 07:22:26,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:22:26,633 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:22:26,646 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 07:22:26,646 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [973346031] [2021-11-07 07:22:26,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:22:26,647 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:22:26,647 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:22:26,654 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:22:26,670 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-07 07:22:27,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:22:27,112 INFO L263 TraceCheckSpWp]: Trace formula consists of 436 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 07:22:27,115 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:22:27,487 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 07:22:27,487 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:22:27,487 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722688724] [2021-11-07 07:22:27,487 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 07:22:27,487 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [973346031] [2021-11-07 07:22:27,487 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [973346031] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:22:27,487 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-07 07:22:27,488 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-11-07 07:22:27,488 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400140873] [2021-11-07 07:22:27,488 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 07:22:27,488 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:22:27,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 07:22:27,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-07 07:22:27,489 INFO L87 Difference]: Start difference. First operand 306 states and 361 transitions. Second operand has 7 states, 7 states have (on average 17.857142857142858) internal successors, (125), 7 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:22:32,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:22:32,940 INFO L93 Difference]: Finished difference Result 430 states and 511 transitions. [2021-11-07 07:22:32,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 07:22:32,941 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.857142857142858) internal successors, (125), 7 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 127 [2021-11-07 07:22:32,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:22:32,944 INFO L225 Difference]: With dead ends: 430 [2021-11-07 07:22:32,944 INFO L226 Difference]: Without dead ends: 401 [2021-11-07 07:22:32,944 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-11-07 07:22:32,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2021-11-07 07:22:32,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 308. [2021-11-07 07:22:32,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 304 states have (on average 1.194078947368421) internal successors, (363), 307 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:22:32,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 363 transitions. [2021-11-07 07:22:32,960 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 363 transitions. Word has length 127 [2021-11-07 07:22:32,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:22:32,960 INFO L470 AbstractCegarLoop]: Abstraction has 308 states and 363 transitions. [2021-11-07 07:22:32,961 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.857142857142858) internal successors, (125), 7 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:22:32,961 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 363 transitions. [2021-11-07 07:22:32,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-11-07 07:22:32,962 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:22:32,962 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:22:32,999 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-11-07 07:22:33,188 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-11-07 07:22:33,188 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 07:22:33,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:22:33,189 INFO L85 PathProgramCache]: Analyzing trace with hash -1843697831, now seen corresponding path program 1 times [2021-11-07 07:22:33,189 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:22:33,189 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913101456] [2021-11-07 07:22:33,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:22:33,189 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:22:33,207 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 07:22:33,207 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [365270309] [2021-11-07 07:22:33,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:22:33,208 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:22:33,208 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:22:33,209 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:22:33,215 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-11-07 07:22:34,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:22:34,616 INFO L263 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-07 07:22:34,619 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:22:34,931 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 42 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-07 07:22:34,931 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:22:34,931 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913101456] [2021-11-07 07:22:34,931 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 07:22:34,931 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [365270309] [2021-11-07 07:22:34,932 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [365270309] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:22:34,932 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-07 07:22:34,932 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-11-07 07:22:34,932 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606900320] [2021-11-07 07:22:34,932 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 07:22:34,932 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:22:34,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 07:22:34,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 07:22:34,933 INFO L87 Difference]: Start difference. First operand 308 states and 363 transitions. Second operand has 5 states, 5 states have (on average 21.6) internal successors, (108), 5 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:22:34,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:22:34,983 INFO L93 Difference]: Finished difference Result 574 states and 686 transitions. [2021-11-07 07:22:34,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 07:22:34,984 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.6) internal successors, (108), 5 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 127 [2021-11-07 07:22:34,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:22:34,986 INFO L225 Difference]: With dead ends: 574 [2021-11-07 07:22:34,986 INFO L226 Difference]: Without dead ends: 311 [2021-11-07 07:22:34,987 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 07:22:34,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2021-11-07 07:22:34,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 311. [2021-11-07 07:22:35,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 311 states, 307 states have (on average 1.1921824104234529) internal successors, (366), 310 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:22:35,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 366 transitions. [2021-11-07 07:22:35,001 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 366 transitions. Word has length 127 [2021-11-07 07:22:35,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:22:35,002 INFO L470 AbstractCegarLoop]: Abstraction has 311 states and 366 transitions. [2021-11-07 07:22:35,002 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.6) internal successors, (108), 5 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:22:35,002 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 366 transitions. [2021-11-07 07:22:35,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-11-07 07:22:35,004 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:22:35,004 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:22:35,021 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-11-07 07:22:35,214 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-11-07 07:22:35,215 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 07:22:35,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:22:35,216 INFO L85 PathProgramCache]: Analyzing trace with hash -1717123217, now seen corresponding path program 2 times [2021-11-07 07:22:35,216 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:22:35,216 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627381833] [2021-11-07 07:22:35,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:22:35,216 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:22:35,230 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 07:22:35,230 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2133545692] [2021-11-07 07:22:35,231 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 07:22:35,231 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:22:35,231 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:22:35,232 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:22:35,243 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-11-07 07:22:36,768 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 07:22:36,768 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:22:36,773 INFO L263 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-07 07:22:36,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:22:37,148 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 42 proven. 9 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-11-07 07:22:37,148 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:22:37,149 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627381833] [2021-11-07 07:22:37,149 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 07:22:37,149 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2133545692] [2021-11-07 07:22:37,149 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2133545692] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:22:37,149 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-07 07:22:37,150 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-11-07 07:22:37,150 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698777464] [2021-11-07 07:22:37,150 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 07:22:37,150 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:22:37,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 07:22:37,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-07 07:22:37,151 INFO L87 Difference]: Start difference. First operand 311 states and 366 transitions. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:22:37,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:22:37,287 INFO L93 Difference]: Finished difference Result 1243 states and 1492 transitions. [2021-11-07 07:22:37,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 07:22:37,288 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 128 [2021-11-07 07:22:37,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:22:37,293 INFO L225 Difference]: With dead ends: 1243 [2021-11-07 07:22:37,294 INFO L226 Difference]: Without dead ends: 983 [2021-11-07 07:22:37,294 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-07 07:22:37,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 983 states. [2021-11-07 07:22:37,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 983 to 314. [2021-11-07 07:22:37,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 314 states, 310 states have (on average 1.1903225806451614) internal successors, (369), 313 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:22:37,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 369 transitions. [2021-11-07 07:22:37,316 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 369 transitions. Word has length 128 [2021-11-07 07:22:37,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:22:37,316 INFO L470 AbstractCegarLoop]: Abstraction has 314 states and 369 transitions. [2021-11-07 07:22:37,317 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:22:37,317 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 369 transitions. [2021-11-07 07:22:37,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-11-07 07:22:37,318 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:22:37,319 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:22:37,363 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-11-07 07:22:37,544 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-11-07 07:22:37,544 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 07:22:37,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:22:37,544 INFO L85 PathProgramCache]: Analyzing trace with hash -841333512, now seen corresponding path program 3 times [2021-11-07 07:22:37,545 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:22:37,545 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749442215] [2021-11-07 07:22:37,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:22:37,545 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:22:37,557 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 07:22:37,557 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [769290007] [2021-11-07 07:22:37,557 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 07:22:37,558 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:22:37,558 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:22:37,558 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:22:37,559 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-11-07 07:22:45,280 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-07 07:22:45,280 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:22:45,291 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 07:22:45,293 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:22:45,843 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-07 07:22:45,843 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:22:45,844 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749442215] [2021-11-07 07:22:45,844 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 07:22:45,844 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [769290007] [2021-11-07 07:22:45,844 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [769290007] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:22:45,844 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:22:45,844 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 07:22:45,845 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803381787] [2021-11-07 07:22:45,846 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 07:22:45,846 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:22:45,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 07:22:45,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 07:22:45,847 INFO L87 Difference]: Start difference. First operand 314 states and 369 transitions. Second operand has 6 states, 5 states have (on average 24.4) internal successors, (122), 6 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:22:45,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:22:45,926 INFO L93 Difference]: Finished difference Result 314 states and 369 transitions. [2021-11-07 07:22:45,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 07:22:45,926 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 24.4) internal successors, (122), 6 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 129 [2021-11-07 07:22:45,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:22:45,928 INFO L225 Difference]: With dead ends: 314 [2021-11-07 07:22:45,928 INFO L226 Difference]: Without dead ends: 313 [2021-11-07 07:22:45,929 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 07:22:45,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2021-11-07 07:22:45,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 313. [2021-11-07 07:22:45,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 313 states, 310 states have (on average 1.1870967741935483) internal successors, (368), 312 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:22:45,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 368 transitions. [2021-11-07 07:22:45,955 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 368 transitions. Word has length 129 [2021-11-07 07:22:45,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:22:45,956 INFO L470 AbstractCegarLoop]: Abstraction has 313 states and 368 transitions. [2021-11-07 07:22:45,956 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 24.4) internal successors, (122), 6 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:22:45,956 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 368 transitions. [2021-11-07 07:22:45,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-11-07 07:22:45,958 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:22:45,959 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:22:45,979 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-11-07 07:22:46,175 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:22:46,176 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 07:22:46,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:22:46,176 INFO L85 PathProgramCache]: Analyzing trace with hash 1481863483, now seen corresponding path program 2 times [2021-11-07 07:22:46,176 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:22:46,176 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461629507] [2021-11-07 07:22:46,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:22:46,176 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:22:46,208 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 07:22:46,208 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [331590126] [2021-11-07 07:22:46,209 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 07:22:46,209 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:22:46,209 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:22:46,210 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:22:46,220 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-11-07 07:22:46,732 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-07 07:22:46,732 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:22:46,734 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 07:22:46,738 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:22:47,100 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 104 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2021-11-07 07:22:47,100 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:22:47,101 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461629507] [2021-11-07 07:22:47,101 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 07:22:47,101 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [331590126] [2021-11-07 07:22:47,101 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [331590126] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:22:47,101 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:22:47,101 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 07:22:47,101 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697685565] [2021-11-07 07:22:47,102 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 07:22:47,102 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:22:47,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 07:22:47,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 07:22:47,103 INFO L87 Difference]: Start difference. First operand 313 states and 368 transitions. Second operand has 4 states, 3 states have (on average 41.0) internal successors, (123), 4 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:22:47,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:22:47,138 INFO L93 Difference]: Finished difference Result 313 states and 368 transitions. [2021-11-07 07:22:47,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 07:22:47,139 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 41.0) internal successors, (123), 4 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 179 [2021-11-07 07:22:47,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:22:47,141 INFO L225 Difference]: With dead ends: 313 [2021-11-07 07:22:47,142 INFO L226 Difference]: Without dead ends: 312 [2021-11-07 07:22:47,142 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 176 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 07:22:47,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2021-11-07 07:22:47,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 312. [2021-11-07 07:22:47,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312 states, 310 states have (on average 1.1838709677419355) internal successors, (367), 311 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:22:47,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 367 transitions. [2021-11-07 07:22:47,163 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 367 transitions. Word has length 179 [2021-11-07 07:22:47,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:22:47,164 INFO L470 AbstractCegarLoop]: Abstraction has 312 states and 367 transitions. [2021-11-07 07:22:47,164 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 41.0) internal successors, (123), 4 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:22:47,164 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 367 transitions. [2021-11-07 07:22:47,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2021-11-07 07:22:47,166 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:22:47,167 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:22:47,215 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-11-07 07:22:47,392 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:22:47,392 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 07:22:47,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:22:47,392 INFO L85 PathProgramCache]: Analyzing trace with hash 861267959, now seen corresponding path program 2 times [2021-11-07 07:22:47,393 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:22:47,393 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401170202] [2021-11-07 07:22:47,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:22:47,393 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:22:47,409 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 07:22:47,409 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [11761320] [2021-11-07 07:22:47,409 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 07:22:47,409 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:22:47,410 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:22:47,412 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:22:47,413 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-11-07 07:22:47,961 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-07 07:22:47,962 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:22:47,963 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 07:22:47,989 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:22:48,490 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2021-11-07 07:22:48,491 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:22:48,491 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401170202] [2021-11-07 07:22:48,491 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 07:22:48,492 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [11761320] [2021-11-07 07:22:48,492 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [11761320] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:22:48,492 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:22:48,492 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 07:22:48,492 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34648469] [2021-11-07 07:22:48,495 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 07:22:48,495 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:22:48,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 07:22:48,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 07:22:48,496 INFO L87 Difference]: Start difference. First operand 312 states and 367 transitions. Second operand has 4 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:22:48,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:22:48,553 INFO L93 Difference]: Finished difference Result 338 states and 403 transitions. [2021-11-07 07:22:48,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 07:22:48,553 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 184 [2021-11-07 07:22:48,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:22:48,556 INFO L225 Difference]: With dead ends: 338 [2021-11-07 07:22:48,556 INFO L226 Difference]: Without dead ends: 337 [2021-11-07 07:22:48,557 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 181 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 07:22:48,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2021-11-07 07:22:48,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 314. [2021-11-07 07:22:48,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 314 states, 312 states have (on average 1.1826923076923077) internal successors, (369), 313 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:22:48,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 369 transitions. [2021-11-07 07:22:48,600 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 369 transitions. Word has length 184 [2021-11-07 07:22:48,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:22:48,600 INFO L470 AbstractCegarLoop]: Abstraction has 314 states and 369 transitions. [2021-11-07 07:22:48,601 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:22:48,601 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 369 transitions. [2021-11-07 07:22:48,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2021-11-07 07:22:48,603 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:22:48,603 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-07 07:22:48,640 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-11-07 07:22:48,828 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:22:48,828 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 07:22:48,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:22:48,829 INFO L85 PathProgramCache]: Analyzing trace with hash 929503394, now seen corresponding path program 1 times [2021-11-07 07:22:48,829 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:22:48,829 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726427064] [2021-11-07 07:22:48,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:22:48,829 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:22:48,848 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 07:22:48,848 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [958645265] [2021-11-07 07:22:48,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:22:48,849 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:22:48,849 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:22:48,850 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:22:48,861 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-11-07 07:22:49,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:22:49,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 586 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-07 07:22:49,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:22:50,126 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 0 proven. 164 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-07 07:22:50,126 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:22:50,126 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726427064] [2021-11-07 07:22:50,126 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 07:22:50,126 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [958645265] [2021-11-07 07:22:50,126 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [958645265] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:22:50,126 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-07 07:22:50,127 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-11-07 07:22:50,127 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981372552] [2021-11-07 07:22:50,127 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-07 07:22:50,127 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:22:50,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-07 07:22:50,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-07 07:22:50,128 INFO L87 Difference]: Start difference. First operand 314 states and 369 transitions. Second operand has 9 states, 9 states have (on average 20.11111111111111) internal successors, (181), 9 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:22:50,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:22:50,243 INFO L93 Difference]: Finished difference Result 532 states and 628 transitions. [2021-11-07 07:22:50,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-07 07:22:50,244 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 20.11111111111111) internal successors, (181), 9 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 185 [2021-11-07 07:22:50,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:22:50,247 INFO L225 Difference]: With dead ends: 532 [2021-11-07 07:22:50,247 INFO L226 Difference]: Without dead ends: 501 [2021-11-07 07:22:50,247 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2021-11-07 07:22:50,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 501 states. [2021-11-07 07:22:50,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 501 to 408. [2021-11-07 07:22:50,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 408 states, 406 states have (on average 1.1773399014778325) internal successors, (478), 407 states have internal predecessors, (478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:22:50,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 478 transitions. [2021-11-07 07:22:50,276 INFO L78 Accepts]: Start accepts. Automaton has 408 states and 478 transitions. Word has length 185 [2021-11-07 07:22:50,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:22:50,277 INFO L470 AbstractCegarLoop]: Abstraction has 408 states and 478 transitions. [2021-11-07 07:22:50,277 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 20.11111111111111) internal successors, (181), 9 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:22:50,277 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 478 transitions. [2021-11-07 07:22:50,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2021-11-07 07:22:50,280 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:22:50,281 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:22:50,318 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2021-11-07 07:22:50,508 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-11-07 07:22:50,508 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 07:22:50,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:22:50,508 INFO L85 PathProgramCache]: Analyzing trace with hash 380057375, now seen corresponding path program 2 times [2021-11-07 07:22:50,509 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:22:50,509 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825072469] [2021-11-07 07:22:50,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:22:50,509 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:22:50,545 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 07:22:50,545 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [431312663] [2021-11-07 07:22:50,545 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 07:22:50,545 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:22:50,546 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:22:50,550 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:22:50,550 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-11-07 07:22:51,195 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-07 07:22:51,195 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:22:51,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 07:22:51,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:22:51,863 INFO L134 CoverageAnalysis]: Checked inductivity of 340 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 340 trivial. 0 not checked. [2021-11-07 07:22:51,864 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:22:51,864 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825072469] [2021-11-07 07:22:51,864 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 07:22:51,864 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [431312663] [2021-11-07 07:22:51,864 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [431312663] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:22:51,864 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:22:51,865 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 07:22:51,865 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942302769] [2021-11-07 07:22:51,865 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 07:22:51,866 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:22:51,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 07:22:51,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 07:22:51,867 INFO L87 Difference]: Start difference. First operand 408 states and 478 transitions. Second operand has 4 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:22:51,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:22:51,910 INFO L93 Difference]: Finished difference Result 408 states and 478 transitions. [2021-11-07 07:22:51,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 07:22:51,911 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 240 [2021-11-07 07:22:51,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:22:51,913 INFO L225 Difference]: With dead ends: 408 [2021-11-07 07:22:51,914 INFO L226 Difference]: Without dead ends: 407 [2021-11-07 07:22:51,914 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 237 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 07:22:51,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2021-11-07 07:22:51,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 407. [2021-11-07 07:22:51,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 407 states, 406 states have (on average 1.1748768472906403) internal successors, (477), 406 states have internal predecessors, (477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:22:51,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 477 transitions. [2021-11-07 07:22:51,941 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 477 transitions. Word has length 240 [2021-11-07 07:22:51,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:22:51,941 INFO L470 AbstractCegarLoop]: Abstraction has 407 states and 477 transitions. [2021-11-07 07:22:51,942 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:22:51,942 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 477 transitions. [2021-11-07 07:22:51,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2021-11-07 07:22:51,945 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:22:51,945 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 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 07:22:51,981 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2021-11-07 07:22:52,168 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:22:52,168 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 07:22:52,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:22:52,169 INFO L85 PathProgramCache]: Analyzing trace with hash 1096121545, now seen corresponding path program 1 times [2021-11-07 07:22:52,169 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:22:52,169 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25870219] [2021-11-07 07:22:52,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:22:52,169 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:22:52,215 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 07:22:52,216 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [489079903] [2021-11-07 07:22:52,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:22:52,216 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:22:52,217 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:22:52,217 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:22:52,236 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-11-07 07:22:53,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:22:53,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 754 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-07 07:22:53,297 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:22:53,981 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 0 proven. 328 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-07 07:22:53,981 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:22:53,982 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25870219] [2021-11-07 07:22:53,982 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 07:22:53,982 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [489079903] [2021-11-07 07:22:53,982 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [489079903] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:22:53,982 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-07 07:22:53,983 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-11-07 07:22:53,983 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385709491] [2021-11-07 07:22:53,983 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-07 07:22:53,983 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:22:53,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-07 07:22:53,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-11-07 07:22:53,984 INFO L87 Difference]: Start difference. First operand 407 states and 477 transitions. Second operand has 11 states, 11 states have (on average 22.0) internal successors, (242), 11 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:22:54,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:22:54,125 INFO L93 Difference]: Finished difference Result 624 states and 735 transitions. [2021-11-07 07:22:54,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-07 07:22:54,126 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 22.0) internal successors, (242), 11 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 247 [2021-11-07 07:22:54,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:22:54,130 INFO L225 Difference]: With dead ends: 624 [2021-11-07 07:22:54,130 INFO L226 Difference]: Without dead ends: 594 [2021-11-07 07:22:54,130 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 237 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-11-07 07:22:54,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 594 states. [2021-11-07 07:22:54,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 594 to 501. [2021-11-07 07:22:54,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 501 states, 500 states have (on average 1.172) internal successors, (586), 500 states have internal predecessors, (586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:22:54,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 501 states to 501 states and 586 transitions. [2021-11-07 07:22:54,169 INFO L78 Accepts]: Start accepts. Automaton has 501 states and 586 transitions. Word has length 247 [2021-11-07 07:22:54,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:22:54,170 INFO L470 AbstractCegarLoop]: Abstraction has 501 states and 586 transitions. [2021-11-07 07:22:54,170 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 22.0) internal successors, (242), 11 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:22:54,170 INFO L276 IsEmpty]: Start isEmpty. Operand 501 states and 586 transitions. [2021-11-07 07:22:54,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2021-11-07 07:22:54,175 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:22:54,175 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 2, 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 07:22:54,214 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2021-11-07 07:22:54,390 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-11-07 07:22:54,390 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 07:22:54,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:22:54,391 INFO L85 PathProgramCache]: Analyzing trace with hash -1356288378, now seen corresponding path program 2 times [2021-11-07 07:22:54,391 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:22:54,391 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230453749] [2021-11-07 07:22:54,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:22:54,391 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:22:54,410 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 07:22:54,411 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1792978463] [2021-11-07 07:22:54,411 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 07:22:54,411 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:22:54,411 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:22:54,416 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:22:54,429 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-11-07 07:22:55,358 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 07:22:55,358 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:22:55,363 INFO L263 TraceCheckSpWp]: Trace formula consists of 891 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-07 07:22:55,367 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:22:56,188 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 0 proven. 547 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-07 07:22:56,189 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:22:56,189 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230453749] [2021-11-07 07:22:56,189 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 07:22:56,189 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1792978463] [2021-11-07 07:22:56,189 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1792978463] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:22:56,190 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-07 07:22:56,190 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2021-11-07 07:22:56,190 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741133856] [2021-11-07 07:22:56,191 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-07 07:22:56,191 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:22:56,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-07 07:22:56,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-11-07 07:22:56,192 INFO L87 Difference]: Start difference. First operand 501 states and 586 transitions. Second operand has 13 states, 13 states have (on average 22.846153846153847) internal successors, (297), 13 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:22:56,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:22:56,363 INFO L93 Difference]: Finished difference Result 718 states and 844 transitions. [2021-11-07 07:22:56,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-07 07:22:56,364 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 22.846153846153847) internal successors, (297), 13 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 302 [2021-11-07 07:22:56,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:22:56,369 INFO L225 Difference]: With dead ends: 718 [2021-11-07 07:22:56,369 INFO L226 Difference]: Without dead ends: 688 [2021-11-07 07:22:56,370 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 290 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=103, Invalid=203, Unknown=0, NotChecked=0, Total=306 [2021-11-07 07:22:56,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 688 states. [2021-11-07 07:22:56,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 688 to 595. [2021-11-07 07:22:56,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 595 states, 594 states have (on average 1.17003367003367) internal successors, (695), 594 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:22:56,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 595 states to 595 states and 695 transitions. [2021-11-07 07:22:56,419 INFO L78 Accepts]: Start accepts. Automaton has 595 states and 695 transitions. Word has length 302 [2021-11-07 07:22:56,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:22:56,420 INFO L470 AbstractCegarLoop]: Abstraction has 595 states and 695 transitions. [2021-11-07 07:22:56,421 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 22.846153846153847) internal successors, (297), 13 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:22:56,421 INFO L276 IsEmpty]: Start isEmpty. Operand 595 states and 695 transitions. [2021-11-07 07:22:56,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 358 [2021-11-07 07:22:56,438 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:22:56,438 INFO L513 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 3, 3, 2, 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 07:22:56,482 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2021-11-07 07:22:56,660 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-11-07 07:22:56,660 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 07:22:56,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:22:56,660 INFO L85 PathProgramCache]: Analyzing trace with hash 988646441, now seen corresponding path program 3 times [2021-11-07 07:22:56,661 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:22:56,661 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656613839] [2021-11-07 07:22:56,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:22:56,661 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:22:56,679 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 07:22:56,679 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1664992896] [2021-11-07 07:22:56,680 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 07:22:56,680 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:22:56,680 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:22:56,681 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:22:56,681 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2021-11-07 07:22:57,617 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-07 07:22:57,617 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:22:57,619 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 07:22:57,626 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:22:58,546 INFO L134 CoverageAnalysis]: Checked inductivity of 835 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 833 trivial. 0 not checked. [2021-11-07 07:22:58,546 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:22:58,546 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656613839] [2021-11-07 07:22:58,546 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 07:22:58,546 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1664992896] [2021-11-07 07:22:58,547 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1664992896] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:22:58,547 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-07 07:22:58,547 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2021-11-07 07:22:58,547 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754725880] [2021-11-07 07:22:58,547 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 07:22:58,548 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:22:58,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 07:22:58,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 07:22:58,548 INFO L87 Difference]: Start difference. First operand 595 states and 695 transitions. Second operand has 6 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:22:58,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:22:58,652 INFO L93 Difference]: Finished difference Result 644 states and 764 transitions. [2021-11-07 07:22:58,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 07:22:58,652 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 357 [2021-11-07 07:22:58,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:22:58,656 INFO L225 Difference]: With dead ends: 644 [2021-11-07 07:22:58,657 INFO L226 Difference]: Without dead ends: 643 [2021-11-07 07:22:58,657 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 359 GetRequests, 352 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-11-07 07:22:58,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2021-11-07 07:22:58,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 621. [2021-11-07 07:22:58,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 621 states, 620 states have (on average 1.179032258064516) internal successors, (731), 620 states have internal predecessors, (731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:22:58,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 621 states to 621 states and 731 transitions. [2021-11-07 07:22:58,705 INFO L78 Accepts]: Start accepts. Automaton has 621 states and 731 transitions. Word has length 357 [2021-11-07 07:22:58,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:22:58,706 INFO L470 AbstractCegarLoop]: Abstraction has 621 states and 731 transitions. [2021-11-07 07:22:58,706 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:22:58,706 INFO L276 IsEmpty]: Start isEmpty. Operand 621 states and 731 transitions. [2021-11-07 07:22:58,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2021-11-07 07:22:58,710 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:22:58,710 INFO L513 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:22:58,749 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2021-11-07 07:22:58,936 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-11-07 07:22:58,936 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 07:22:58,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:22:58,937 INFO L85 PathProgramCache]: Analyzing trace with hash -109984744, now seen corresponding path program 4 times [2021-11-07 07:22:58,937 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:22:58,937 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045823853] [2021-11-07 07:22:58,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:22:58,937 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:22:58,963 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 07:22:58,963 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2124633268] [2021-11-07 07:22:58,964 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-07 07:22:58,964 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:22:58,964 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:22:58,965 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:22:58,971 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2021-11-07 07:23:01,040 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-07 07:23:01,041 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:23:01,046 INFO L263 TraceCheckSpWp]: Trace formula consists of 1060 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 07:23:01,071 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:23:02,102 INFO L134 CoverageAnalysis]: Checked inductivity of 845 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 833 trivial. 0 not checked. [2021-11-07 07:23:02,102 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:23:02,102 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045823853] [2021-11-07 07:23:02,103 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 07:23:02,103 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2124633268] [2021-11-07 07:23:02,103 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2124633268] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:23:02,103 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-07 07:23:02,103 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-11-07 07:23:02,103 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916794360] [2021-11-07 07:23:02,104 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 07:23:02,104 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:23:02,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 07:23:02,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-11-07 07:23:02,104 INFO L87 Difference]: Start difference. First operand 621 states and 731 transitions. Second operand has 8 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:23:02,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:23:02,242 INFO L93 Difference]: Finished difference Result 670 states and 800 transitions. [2021-11-07 07:23:02,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-07 07:23:02,242 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 365 [2021-11-07 07:23:02,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:23:02,246 INFO L225 Difference]: With dead ends: 670 [2021-11-07 07:23:02,247 INFO L226 Difference]: Without dead ends: 669 [2021-11-07 07:23:02,247 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 369 GetRequests, 358 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=59, Invalid=97, Unknown=0, NotChecked=0, Total=156 [2021-11-07 07:23:02,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 669 states. [2021-11-07 07:23:02,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 669 to 647. [2021-11-07 07:23:02,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 647 states, 646 states have (on average 1.1873065015479876) internal successors, (767), 646 states have internal predecessors, (767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:23:02,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 647 states to 647 states and 767 transitions. [2021-11-07 07:23:02,293 INFO L78 Accepts]: Start accepts. Automaton has 647 states and 767 transitions. Word has length 365 [2021-11-07 07:23:02,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:23:02,294 INFO L470 AbstractCegarLoop]: Abstraction has 647 states and 767 transitions. [2021-11-07 07:23:02,294 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:23:02,294 INFO L276 IsEmpty]: Start isEmpty. Operand 647 states and 767 transitions. [2021-11-07 07:23:02,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 374 [2021-11-07 07:23:02,297 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:23:02,297 INFO L513 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:23:02,338 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2021-11-07 07:23:02,524 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-11-07 07:23:02,524 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 07:23:02,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:23:02,525 INFO L85 PathProgramCache]: Analyzing trace with hash 330472711, now seen corresponding path program 5 times [2021-11-07 07:23:02,525 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:23:02,525 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849218122] [2021-11-07 07:23:02,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:23:02,525 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:23:02,549 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 07:23:02,550 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [534181617] [2021-11-07 07:23:02,550 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-07 07:23:02,550 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:23:02,550 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:23:02,551 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:23:02,553 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2021-11-07 07:23:04,272 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-11-07 07:23:04,272 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:23:04,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-07 07:23:04,282 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:23:05,053 INFO L134 CoverageAnalysis]: Checked inductivity of 863 backedges. 191 proven. 12 refuted. 0 times theorem prover too weak. 660 trivial. 0 not checked. [2021-11-07 07:23:05,053 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:23:05,054 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849218122] [2021-11-07 07:23:05,054 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 07:23:05,054 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [534181617] [2021-11-07 07:23:05,054 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [534181617] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:23:05,054 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-07 07:23:05,054 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-11-07 07:23:05,055 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592221374] [2021-11-07 07:23:05,055 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-07 07:23:05,055 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:23:05,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-07 07:23:05,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-11-07 07:23:05,056 INFO L87 Difference]: Start difference. First operand 647 states and 767 transitions. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:23:05,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:23:05,282 INFO L93 Difference]: Finished difference Result 2799 states and 3358 transitions. [2021-11-07 07:23:05,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-07 07:23:05,283 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 373 [2021-11-07 07:23:05,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:23:05,294 INFO L225 Difference]: With dead ends: 2799 [2021-11-07 07:23:05,294 INFO L226 Difference]: Without dead ends: 2204 [2021-11-07 07:23:05,298 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 372 GetRequests, 365 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-11-07 07:23:05,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2204 states. [2021-11-07 07:23:05,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2204 to 653. [2021-11-07 07:23:05,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 653 states, 652 states have (on average 1.1855828220858895) internal successors, (773), 652 states have internal predecessors, (773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:23:05,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 653 states to 653 states and 773 transitions. [2021-11-07 07:23:05,351 INFO L78 Accepts]: Start accepts. Automaton has 653 states and 773 transitions. Word has length 373 [2021-11-07 07:23:05,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:23:05,352 INFO L470 AbstractCegarLoop]: Abstraction has 653 states and 773 transitions. [2021-11-07 07:23:05,352 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:23:05,352 INFO L276 IsEmpty]: Start isEmpty. Operand 653 states and 773 transitions. [2021-11-07 07:23:05,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2021-11-07 07:23:05,355 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:23:05,356 INFO L513 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:23:05,371 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2021-11-07 07:23:05,567 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-11-07 07:23:05,568 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 07:23:05,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:23:05,568 INFO L85 PathProgramCache]: Analyzing trace with hash 573922078, now seen corresponding path program 6 times [2021-11-07 07:23:05,568 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:23:05,569 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084628742] [2021-11-07 07:23:05,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:23:05,569 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:23:05,607 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 07:23:05,607 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [325490812] [2021-11-07 07:23:05,607 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-07 07:23:05,608 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:23:05,608 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:23:05,626 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:23:05,652 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2021-11-07 07:23:07,010 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-11-07 07:23:07,011 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:23:07,014 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 07:23:07,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:23:07,845 INFO L134 CoverageAnalysis]: Checked inductivity of 867 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 851 trivial. 0 not checked. [2021-11-07 07:23:07,845 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:23:07,845 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084628742] [2021-11-07 07:23:07,846 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 07:23:07,846 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [325490812] [2021-11-07 07:23:07,846 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [325490812] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:23:07,846 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:23:07,846 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 07:23:07,846 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185345640] [2021-11-07 07:23:07,847 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 07:23:07,847 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:23:07,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 07:23:07,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 07:23:07,848 INFO L87 Difference]: Start difference. First operand 653 states and 773 transitions. Second operand has 5 states, 4 states have (on average 21.75) internal successors, (87), 5 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:23:08,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:23:08,003 INFO L93 Difference]: Finished difference Result 720 states and 860 transitions. [2021-11-07 07:23:08,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 07:23:08,004 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 21.75) internal successors, (87), 5 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 374 [2021-11-07 07:23:08,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:23:08,008 INFO L225 Difference]: With dead ends: 720 [2021-11-07 07:23:08,008 INFO L226 Difference]: Without dead ends: 719 [2021-11-07 07:23:08,011 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 377 GetRequests, 372 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-07 07:23:08,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 719 states. [2021-11-07 07:23:08,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 719 to 692. [2021-11-07 07:23:08,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 692 states, 691 states have (on average 1.2040520984081042) internal successors, (832), 691 states have internal predecessors, (832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:23:08,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 692 states to 692 states and 832 transitions. [2021-11-07 07:23:08,075 INFO L78 Accepts]: Start accepts. Automaton has 692 states and 832 transitions. Word has length 374 [2021-11-07 07:23:08,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:23:08,076 INFO L470 AbstractCegarLoop]: Abstraction has 692 states and 832 transitions. [2021-11-07 07:23:08,076 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 21.75) internal successors, (87), 5 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:23:08,076 INFO L276 IsEmpty]: Start isEmpty. Operand 692 states and 832 transitions. [2021-11-07 07:23:08,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 376 [2021-11-07 07:23:08,080 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:23:08,081 INFO L513 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:23:08,109 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2021-11-07 07:23:08,284 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:23:08,284 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 07:23:08,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:23:08,284 INFO L85 PathProgramCache]: Analyzing trace with hash 35048846, now seen corresponding path program 1 times [2021-11-07 07:23:08,285 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:23:08,285 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914658348] [2021-11-07 07:23:08,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:23:08,285 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:23:08,331 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 07:23:08,331 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1896204610] [2021-11-07 07:23:08,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:23:08,331 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:23:08,331 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:23:08,332 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:23:08,333 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2021-11-07 07:23:09,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:23:09,782 INFO L263 TraceCheckSpWp]: Trace formula consists of 1100 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-07 07:23:09,787 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:23:10,925 INFO L134 CoverageAnalysis]: Checked inductivity of 865 backedges. 0 proven. 821 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2021-11-07 07:23:10,925 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:23:10,925 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914658348] [2021-11-07 07:23:10,926 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 07:23:10,926 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1896204610] [2021-11-07 07:23:10,926 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1896204610] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:23:10,926 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-07 07:23:10,927 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2021-11-07 07:23:10,927 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556841800] [2021-11-07 07:23:10,928 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-07 07:23:10,928 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:23:10,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-07 07:23:10,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2021-11-07 07:23:10,930 INFO L87 Difference]: Start difference. First operand 692 states and 832 transitions. Second operand has 15 states, 15 states have (on average 23.666666666666668) internal successors, (355), 15 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:23:11,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:23:11,151 INFO L93 Difference]: Finished difference Result 1002 states and 1223 transitions. [2021-11-07 07:23:11,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-07 07:23:11,151 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 23.666666666666668) internal successors, (355), 15 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 375 [2021-11-07 07:23:11,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:23:11,157 INFO L225 Difference]: With dead ends: 1002 [2021-11-07 07:23:11,157 INFO L226 Difference]: Without dead ends: 881 [2021-11-07 07:23:11,159 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 380 GetRequests, 361 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=138, Invalid=282, Unknown=0, NotChecked=0, Total=420 [2021-11-07 07:23:11,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 881 states. [2021-11-07 07:23:11,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 881 to 787. [2021-11-07 07:23:11,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 787 states, 786 states have (on average 1.1984732824427482) internal successors, (942), 786 states have internal predecessors, (942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:23:11,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 787 states to 787 states and 942 transitions. [2021-11-07 07:23:11,232 INFO L78 Accepts]: Start accepts. Automaton has 787 states and 942 transitions. Word has length 375 [2021-11-07 07:23:11,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:23:11,233 INFO L470 AbstractCegarLoop]: Abstraction has 787 states and 942 transitions. [2021-11-07 07:23:11,233 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 23.666666666666668) internal successors, (355), 15 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:23:11,234 INFO L276 IsEmpty]: Start isEmpty. Operand 787 states and 942 transitions. [2021-11-07 07:23:11,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 431 [2021-11-07 07:23:11,238 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:23:11,239 INFO L513 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:23:11,280 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2021-11-07 07:23:11,454 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:23:11,454 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 07:23:11,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:23:11,455 INFO L85 PathProgramCache]: Analyzing trace with hash -1971107713, now seen corresponding path program 2 times [2021-11-07 07:23:11,455 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:23:11,455 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488907434] [2021-11-07 07:23:11,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:23:11,456 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:23:11,510 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 07:23:11,511 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1989575459] [2021-11-07 07:23:11,511 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 07:23:11,511 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:23:11,511 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:23:11,512 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:23:11,532 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2021-11-07 07:23:13,463 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 07:23:13,464 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:23:13,470 INFO L263 TraceCheckSpWp]: Trace formula consists of 1237 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-07 07:23:13,475 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:23:14,701 INFO L134 CoverageAnalysis]: Checked inductivity of 1194 backedges. 0 proven. 1150 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2021-11-07 07:23:14,701 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:23:14,701 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488907434] [2021-11-07 07:23:14,701 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 07:23:14,701 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1989575459] [2021-11-07 07:23:14,701 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1989575459] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:23:14,701 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-07 07:23:14,701 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2021-11-07 07:23:14,702 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680139] [2021-11-07 07:23:14,702 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-07 07:23:14,703 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:23:14,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-07 07:23:14,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2021-11-07 07:23:14,704 INFO L87 Difference]: Start difference. First operand 787 states and 942 transitions. Second operand has 17 states, 17 states have (on average 24.11764705882353) internal successors, (410), 17 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:23:14,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:23:14,951 INFO L93 Difference]: Finished difference Result 1097 states and 1333 transitions. [2021-11-07 07:23:14,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-07 07:23:14,952 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 24.11764705882353) internal successors, (410), 17 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 430 [2021-11-07 07:23:14,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:23:14,957 INFO L225 Difference]: With dead ends: 1097 [2021-11-07 07:23:14,957 INFO L226 Difference]: Without dead ends: 976 [2021-11-07 07:23:14,958 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 436 GetRequests, 414 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=178, Invalid=374, Unknown=0, NotChecked=0, Total=552 [2021-11-07 07:23:14,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 976 states. [2021-11-07 07:23:15,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 976 to 882. [2021-11-07 07:23:15,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 882 states, 881 states have (on average 1.1940976163450625) internal successors, (1052), 881 states have internal predecessors, (1052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:23:15,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 882 states to 882 states and 1052 transitions. [2021-11-07 07:23:15,036 INFO L78 Accepts]: Start accepts. Automaton has 882 states and 1052 transitions. Word has length 430 [2021-11-07 07:23:15,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:23:15,037 INFO L470 AbstractCegarLoop]: Abstraction has 882 states and 1052 transitions. [2021-11-07 07:23:15,037 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 24.11764705882353) internal successors, (410), 17 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:23:15,038 INFO L276 IsEmpty]: Start isEmpty. Operand 882 states and 1052 transitions. [2021-11-07 07:23:15,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 486 [2021-11-07 07:23:15,044 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:23:15,044 INFO L513 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:23:15,089 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2021-11-07 07:23:15,260 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:23:15,260 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 07:23:15,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:23:15,261 INFO L85 PathProgramCache]: Analyzing trace with hash 3773038, now seen corresponding path program 3 times [2021-11-07 07:23:15,261 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:23:15,261 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105790638] [2021-11-07 07:23:15,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:23:15,262 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:23:15,309 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 07:23:15,309 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [408642464] [2021-11-07 07:23:15,309 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 07:23:15,309 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:23:15,309 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:23:15,310 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:23:15,315 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2021-11-07 07:23:16,965 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-07 07:23:16,965 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:23:16,968 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 07:23:16,976 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:23:17,983 INFO L134 CoverageAnalysis]: Checked inductivity of 1578 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 1564 trivial. 0 not checked. [2021-11-07 07:23:17,983 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:23:17,983 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105790638] [2021-11-07 07:23:17,984 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 07:23:17,984 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [408642464] [2021-11-07 07:23:17,984 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [408642464] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:23:17,984 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:23:17,984 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 07:23:17,984 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29335686] [2021-11-07 07:23:17,985 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 07:23:17,985 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:23:17,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 07:23:17,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-07 07:23:17,986 INFO L87 Difference]: Start difference. First operand 882 states and 1052 transitions. Second operand has 6 states, 5 states have (on average 17.6) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:23:18,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:23:18,158 INFO L93 Difference]: Finished difference Result 989 states and 1199 transitions. [2021-11-07 07:23:18,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-07 07:23:18,158 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 17.6) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 485 [2021-11-07 07:23:18,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:23:18,162 INFO L225 Difference]: With dead ends: 989 [2021-11-07 07:23:18,162 INFO L226 Difference]: Without dead ends: 988 [2021-11-07 07:23:18,162 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 493 GetRequests, 484 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-11-07 07:23:18,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 988 states. [2021-11-07 07:23:18,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 988 to 920. [2021-11-07 07:23:18,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 920 states, 919 states have (on average 1.2078346028291622) internal successors, (1110), 919 states have internal predecessors, (1110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:23:18,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 920 states to 920 states and 1110 transitions. [2021-11-07 07:23:18,224 INFO L78 Accepts]: Start accepts. Automaton has 920 states and 1110 transitions. Word has length 485 [2021-11-07 07:23:18,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:23:18,224 INFO L470 AbstractCegarLoop]: Abstraction has 920 states and 1110 transitions. [2021-11-07 07:23:18,225 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 17.6) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:23:18,225 INFO L276 IsEmpty]: Start isEmpty. Operand 920 states and 1110 transitions. [2021-11-07 07:23:18,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 488 [2021-11-07 07:23:18,229 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:23:18,229 INFO L513 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 4, 4, 3, 3, 3, 3, 3, 3, 2, 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 07:23:18,268 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2021-11-07 07:23:18,442 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2021-11-07 07:23:18,443 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 07:23:18,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:23:18,443 INFO L85 PathProgramCache]: Analyzing trace with hash 2106567617, now seen corresponding path program 1 times [2021-11-07 07:23:18,443 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:23:18,443 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135876981] [2021-11-07 07:23:18,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:23:18,443 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:23:18,470 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 07:23:18,470 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [708335575] [2021-11-07 07:23:18,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:23:18,471 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:23:18,471 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:23:18,472 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:23:18,473 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2021-11-07 07:23:20,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:23:20,333 INFO L263 TraceCheckSpWp]: Trace formula consists of 1378 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-07 07:23:20,342 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:23:21,768 INFO L134 CoverageAnalysis]: Checked inductivity of 1578 backedges. 0 proven. 1534 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2021-11-07 07:23:21,768 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:23:21,768 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135876981] [2021-11-07 07:23:21,769 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 07:23:21,769 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [708335575] [2021-11-07 07:23:21,769 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [708335575] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:23:21,769 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-07 07:23:21,769 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2021-11-07 07:23:21,769 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907585319] [2021-11-07 07:23:21,770 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-07 07:23:21,770 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:23:21,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-07 07:23:21,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2021-11-07 07:23:21,771 INFO L87 Difference]: Start difference. First operand 920 states and 1110 transitions. Second operand has 19 states, 19 states have (on average 24.63157894736842) internal successors, (468), 19 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:23:22,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:23:22,105 INFO L93 Difference]: Finished difference Result 1268 states and 1559 transitions. [2021-11-07 07:23:22,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-07 07:23:22,106 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 24.63157894736842) internal successors, (468), 19 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 487 [2021-11-07 07:23:22,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:23:22,112 INFO L225 Difference]: With dead ends: 1268 [2021-11-07 07:23:22,112 INFO L226 Difference]: Without dead ends: 1109 [2021-11-07 07:23:22,116 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 494 GetRequests, 469 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=223, Invalid=479, Unknown=0, NotChecked=0, Total=702 [2021-11-07 07:23:22,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1109 states. [2021-11-07 07:23:22,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1109 to 1015. [2021-11-07 07:23:22,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1015 states, 1014 states have (on average 1.2031558185404339) internal successors, (1220), 1014 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:23:22,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1015 states to 1015 states and 1220 transitions. [2021-11-07 07:23:22,205 INFO L78 Accepts]: Start accepts. Automaton has 1015 states and 1220 transitions. Word has length 487 [2021-11-07 07:23:22,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:23:22,205 INFO L470 AbstractCegarLoop]: Abstraction has 1015 states and 1220 transitions. [2021-11-07 07:23:22,206 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 24.63157894736842) internal successors, (468), 19 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:23:22,206 INFO L276 IsEmpty]: Start isEmpty. Operand 1015 states and 1220 transitions. [2021-11-07 07:23:22,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 543 [2021-11-07 07:23:22,213 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:23:22,214 INFO L513 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 4, 4, 3, 3, 3, 3, 3, 3, 2, 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 07:23:22,259 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2021-11-07 07:23:22,427 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:23:22,427 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 07:23:22,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:23:22,428 INFO L85 PathProgramCache]: Analyzing trace with hash 1166678194, now seen corresponding path program 2 times [2021-11-07 07:23:22,428 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:23:22,428 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556187489] [2021-11-07 07:23:22,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:23:22,428 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:23:22,484 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 07:23:22,484 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1626167364] [2021-11-07 07:23:22,484 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 07:23:22,484 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:23:22,484 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:23:22,485 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:23:22,486 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2021-11-07 07:23:24,561 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 07:23:24,561 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:23:24,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 1515 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-07 07:23:24,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:23:26,219 INFO L134 CoverageAnalysis]: Checked inductivity of 2017 backedges. 0 proven. 1973 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2021-11-07 07:23:26,220 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:23:26,220 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556187489] [2021-11-07 07:23:26,220 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 07:23:26,220 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1626167364] [2021-11-07 07:23:26,220 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1626167364] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:23:26,220 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-07 07:23:26,221 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2021-11-07 07:23:26,221 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417845825] [2021-11-07 07:23:26,221 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-07 07:23:26,221 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:23:26,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-07 07:23:26,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2021-11-07 07:23:26,222 INFO L87 Difference]: Start difference. First operand 1015 states and 1220 transitions. Second operand has 21 states, 21 states have (on average 24.904761904761905) internal successors, (523), 21 states have internal predecessors, (523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:23:26,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:23:26,471 INFO L93 Difference]: Finished difference Result 1269 states and 1560 transitions. [2021-11-07 07:23:26,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-07 07:23:26,473 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 24.904761904761905) internal successors, (523), 21 states have internal predecessors, (523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 542 [2021-11-07 07:23:26,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:23:26,480 INFO L225 Difference]: With dead ends: 1269 [2021-11-07 07:23:26,480 INFO L226 Difference]: Without dead ends: 1110 [2021-11-07 07:23:26,481 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 550 GetRequests, 522 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=273, Invalid=597, Unknown=0, NotChecked=0, Total=870 [2021-11-07 07:23:26,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1110 states. [2021-11-07 07:23:26,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1110 to 1110. [2021-11-07 07:23:26,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1110 states, 1109 states have (on average 1.1992786293958522) internal successors, (1330), 1109 states have internal predecessors, (1330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:23:26,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1110 states to 1110 states and 1330 transitions. [2021-11-07 07:23:26,557 INFO L78 Accepts]: Start accepts. Automaton has 1110 states and 1330 transitions. Word has length 542 [2021-11-07 07:23:26,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:23:26,558 INFO L470 AbstractCegarLoop]: Abstraction has 1110 states and 1330 transitions. [2021-11-07 07:23:26,558 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 24.904761904761905) internal successors, (523), 21 states have internal predecessors, (523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:23:26,559 INFO L276 IsEmpty]: Start isEmpty. Operand 1110 states and 1330 transitions. [2021-11-07 07:23:26,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 598 [2021-11-07 07:23:26,564 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:23:26,565 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 4, 4, 3, 3, 3, 3, 3, 3, 2, 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 07:23:26,605 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2021-11-07 07:23:26,788 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2021-11-07 07:23:26,788 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 07:23:26,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:23:26,788 INFO L85 PathProgramCache]: Analyzing trace with hash -1687539551, now seen corresponding path program 3 times [2021-11-07 07:23:26,788 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:23:26,789 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108653652] [2021-11-07 07:23:26,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:23:26,789 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:23:26,838 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 07:23:26,839 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [397232224] [2021-11-07 07:23:26,839 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 07:23:26,839 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:23:26,839 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:23:26,840 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:23:26,841 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2021-11-07 07:23:28,855 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-07 07:23:28,855 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:23:28,858 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 07:23:28,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:23:30,174 INFO L134 CoverageAnalysis]: Checked inductivity of 2511 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 2496 trivial. 0 not checked. [2021-11-07 07:23:30,174 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:23:30,174 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108653652] [2021-11-07 07:23:30,174 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 07:23:30,175 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [397232224] [2021-11-07 07:23:30,175 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [397232224] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:23:30,175 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:23:30,175 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 07:23:30,176 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124370413] [2021-11-07 07:23:30,177 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 07:23:30,177 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:23:30,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 07:23:30,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-07 07:23:30,179 INFO L87 Difference]: Start difference. First operand 1110 states and 1330 transitions. Second operand has 6 states, 5 states have (on average 18.4) internal successors, (92), 6 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:23:30,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:23:30,374 INFO L93 Difference]: Finished difference Result 1217 states and 1477 transitions. [2021-11-07 07:23:30,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-07 07:23:30,374 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 18.4) internal successors, (92), 6 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 597 [2021-11-07 07:23:30,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:23:30,379 INFO L225 Difference]: With dead ends: 1217 [2021-11-07 07:23:30,379 INFO L226 Difference]: Without dead ends: 1216 [2021-11-07 07:23:30,380 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 605 GetRequests, 596 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-11-07 07:23:30,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1216 states. [2021-11-07 07:23:30,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1216 to 1131. [2021-11-07 07:23:30,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1131 states, 1130 states have (on average 1.204424778761062) internal successors, (1361), 1130 states have internal predecessors, (1361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:23:30,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1131 states to 1131 states and 1361 transitions. [2021-11-07 07:23:30,473 INFO L78 Accepts]: Start accepts. Automaton has 1131 states and 1361 transitions. Word has length 597 [2021-11-07 07:23:30,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:23:30,474 INFO L470 AbstractCegarLoop]: Abstraction has 1131 states and 1361 transitions. [2021-11-07 07:23:30,475 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 18.4) internal successors, (92), 6 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:23:30,475 INFO L276 IsEmpty]: Start isEmpty. Operand 1131 states and 1361 transitions. [2021-11-07 07:23:30,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 601 [2021-11-07 07:23:30,480 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:23:30,481 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 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 07:23:30,513 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2021-11-07 07:23:30,690 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2021-11-07 07:23:30,690 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 07:23:30,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:23:30,691 INFO L85 PathProgramCache]: Analyzing trace with hash -1341521246, now seen corresponding path program 1 times [2021-11-07 07:23:30,691 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:23:30,691 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621031093] [2021-11-07 07:23:30,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:23:30,691 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:23:30,763 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 07:23:30,765 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1237515613] [2021-11-07 07:23:30,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:23:30,765 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:23:30,766 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:23:30,767 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:23:30,771 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2021-11-07 07:23:33,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:23:33,114 INFO L263 TraceCheckSpWp]: Trace formula consists of 1658 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-07 07:23:33,121 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:23:34,722 INFO L134 CoverageAnalysis]: Checked inductivity of 2514 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 2483 trivial. 0 not checked. [2021-11-07 07:23:34,723 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:23:34,723 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621031093] [2021-11-07 07:23:34,723 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 07:23:34,723 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1237515613] [2021-11-07 07:23:34,724 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1237515613] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:23:34,724 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-07 07:23:34,724 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-11-07 07:23:34,724 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968544212] [2021-11-07 07:23:34,725 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-07 07:23:34,725 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:23:34,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-07 07:23:34,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-11-07 07:23:34,726 INFO L87 Difference]: Start difference. First operand 1131 states and 1361 transitions. Second operand has 10 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:23:34,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:23:34,919 INFO L93 Difference]: Finished difference Result 1339 states and 1649 transitions. [2021-11-07 07:23:34,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-07 07:23:34,919 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 600 [2021-11-07 07:23:34,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:23:34,925 INFO L225 Difference]: With dead ends: 1339 [2021-11-07 07:23:34,925 INFO L226 Difference]: Without dead ends: 1338 [2021-11-07 07:23:34,926 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 606 GetRequests, 591 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=99, Invalid=173, Unknown=0, NotChecked=0, Total=272 [2021-11-07 07:23:34,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1338 states. [2021-11-07 07:23:35,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1338 to 1220. [2021-11-07 07:23:35,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1220 states, 1219 states have (on average 1.2223133716160788) internal successors, (1490), 1219 states have internal predecessors, (1490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:23:35,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1220 states to 1220 states and 1490 transitions. [2021-11-07 07:23:35,041 INFO L78 Accepts]: Start accepts. Automaton has 1220 states and 1490 transitions. Word has length 600 [2021-11-07 07:23:35,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:23:35,042 INFO L470 AbstractCegarLoop]: Abstraction has 1220 states and 1490 transitions. [2021-11-07 07:23:35,042 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:23:35,042 INFO L276 IsEmpty]: Start isEmpty. Operand 1220 states and 1490 transitions. [2021-11-07 07:23:35,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 609 [2021-11-07 07:23:35,048 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:23:35,048 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 5, 4, 4, 4, 4, 4, 4, 3, 3, 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] [2021-11-07 07:23:35,095 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2021-11-07 07:23:35,268 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:23:35,268 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 07:23:35,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:23:35,269 INFO L85 PathProgramCache]: Analyzing trace with hash 1498941009, now seen corresponding path program 1 times [2021-11-07 07:23:35,269 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:23:35,269 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164113854] [2021-11-07 07:23:35,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:23:35,269 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:23:35,301 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 07:23:35,301 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1397072972] [2021-11-07 07:23:35,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:23:35,302 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:23:35,302 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:23:35,302 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:23:35,303 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2021-11-07 07:23:37,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:23:37,987 INFO L263 TraceCheckSpWp]: Trace formula consists of 1690 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-07 07:23:37,996 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:23:39,643 INFO L134 CoverageAnalysis]: Checked inductivity of 2537 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 2483 trivial. 0 not checked. [2021-11-07 07:23:39,643 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:23:39,643 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164113854] [2021-11-07 07:23:39,644 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 07:23:39,644 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1397072972] [2021-11-07 07:23:39,644 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1397072972] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:23:39,644 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-07 07:23:39,644 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-11-07 07:23:39,645 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579263466] [2021-11-07 07:23:39,645 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-07 07:23:39,646 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:23:39,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-07 07:23:39,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2021-11-07 07:23:39,647 INFO L87 Difference]: Start difference. First operand 1220 states and 1490 transitions. Second operand has 12 states, 11 states have (on average 10.090909090909092) internal successors, (111), 11 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:23:39,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:23:39,943 INFO L93 Difference]: Finished difference Result 1434 states and 1784 transitions. [2021-11-07 07:23:39,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-07 07:23:39,944 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 10.090909090909092) internal successors, (111), 11 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 608 [2021-11-07 07:23:39,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:23:39,951 INFO L225 Difference]: With dead ends: 1434 [2021-11-07 07:23:39,951 INFO L226 Difference]: Without dead ends: 1433 [2021-11-07 07:23:39,952 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 616 GetRequests, 597 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=149, Invalid=271, Unknown=0, NotChecked=0, Total=420 [2021-11-07 07:23:39,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1433 states. [2021-11-07 07:23:40,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1433 to 1315. [2021-11-07 07:23:40,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1315 states, 1314 states have (on average 1.2366818873668188) internal successors, (1625), 1314 states have internal predecessors, (1625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:23:40,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1315 states to 1315 states and 1625 transitions. [2021-11-07 07:23:40,037 INFO L78 Accepts]: Start accepts. Automaton has 1315 states and 1625 transitions. Word has length 608 [2021-11-07 07:23:40,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:23:40,038 INFO L470 AbstractCegarLoop]: Abstraction has 1315 states and 1625 transitions. [2021-11-07 07:23:40,038 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 10.090909090909092) internal successors, (111), 11 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:23:40,038 INFO L276 IsEmpty]: Start isEmpty. Operand 1315 states and 1625 transitions. [2021-11-07 07:23:40,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 617 [2021-11-07 07:23:40,044 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:23:40,044 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 6, 5, 5, 5, 5, 5, 4, 3, 3, 2, 2, 2, 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 07:23:40,089 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2021-11-07 07:23:40,272 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:23:40,272 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 07:23:40,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:23:40,273 INFO L85 PathProgramCache]: Analyzing trace with hash -54859008, now seen corresponding path program 2 times [2021-11-07 07:23:40,273 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:23:40,273 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784119216] [2021-11-07 07:23:40,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:23:40,273 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:23:40,307 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 07:23:40,307 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [520365899] [2021-11-07 07:23:40,307 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 07:23:40,307 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:23:40,308 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:23:40,310 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:23:40,348 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2021-11-07 07:23:43,064 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 07:23:43,064 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:23:43,078 INFO L263 TraceCheckSpWp]: Trace formula consists of 1722 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-07 07:23:43,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:23:44,659 INFO L134 CoverageAnalysis]: Checked inductivity of 2568 backedges. 0 proven. 85 refuted. 0 times theorem prover too weak. 2483 trivial. 0 not checked. [2021-11-07 07:23:44,659 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:23:44,659 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784119216] [2021-11-07 07:23:44,659 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 07:23:44,659 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [520365899] [2021-11-07 07:23:44,660 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [520365899] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:23:44,660 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-07 07:23:44,660 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2021-11-07 07:23:44,660 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100398131] [2021-11-07 07:23:44,660 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-07 07:23:44,661 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:23:44,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-07 07:23:44,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2021-11-07 07:23:44,661 INFO L87 Difference]: Start difference. First operand 1315 states and 1625 transitions. Second operand has 14 states, 13 states have (on average 9.153846153846153) internal successors, (119), 13 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:23:44,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:23:44,928 INFO L93 Difference]: Finished difference Result 1529 states and 1919 transitions. [2021-11-07 07:23:44,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-07 07:23:44,928 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 9.153846153846153) internal successors, (119), 13 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 616 [2021-11-07 07:23:44,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:23:44,935 INFO L225 Difference]: With dead ends: 1529 [2021-11-07 07:23:44,935 INFO L226 Difference]: Without dead ends: 1528 [2021-11-07 07:23:44,936 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 626 GetRequests, 603 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=209, Invalid=391, Unknown=0, NotChecked=0, Total=600 [2021-11-07 07:23:44,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1528 states. [2021-11-07 07:23:45,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1528 to 1410. [2021-11-07 07:23:45,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1410 states, 1409 states have (on average 1.2491128459900638) internal successors, (1760), 1409 states have internal predecessors, (1760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:23:45,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1410 states to 1410 states and 1760 transitions. [2021-11-07 07:23:45,022 INFO L78 Accepts]: Start accepts. Automaton has 1410 states and 1760 transitions. Word has length 616 [2021-11-07 07:23:45,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:23:45,023 INFO L470 AbstractCegarLoop]: Abstraction has 1410 states and 1760 transitions. [2021-11-07 07:23:45,023 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 9.153846153846153) internal successors, (119), 13 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:23:45,023 INFO L276 IsEmpty]: Start isEmpty. Operand 1410 states and 1760 transitions. [2021-11-07 07:23:45,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 625 [2021-11-07 07:23:45,029 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:23:45,030 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 7, 6, 6, 6, 6, 6, 4, 3, 3, 3, 3, 2, 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 07:23:45,082 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2021-11-07 07:23:45,254 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37,38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:23:45,255 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 07:23:45,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:23:45,255 INFO L85 PathProgramCache]: Analyzing trace with hash 1807855791, now seen corresponding path program 3 times [2021-11-07 07:23:45,255 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:23:45,255 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313934473] [2021-11-07 07:23:45,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:23:45,256 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:23:45,289 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 07:23:45,290 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [990867601] [2021-11-07 07:23:45,290 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 07:23:45,290 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:23:45,290 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:23:45,291 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:23:45,291 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2021-11-07 07:23:48,096 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-07 07:23:48,096 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:23:48,098 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 07:23:48,104 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:23:49,326 INFO L134 CoverageAnalysis]: Checked inductivity of 2607 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 2572 trivial. 0 not checked. [2021-11-07 07:23:49,326 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:23:49,326 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313934473] [2021-11-07 07:23:49,327 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 07:23:49,327 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [990867601] [2021-11-07 07:23:49,327 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [990867601] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:23:49,327 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:23:49,327 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 07:23:49,327 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394312215] [2021-11-07 07:23:49,328 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 07:23:49,328 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:23:49,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 07:23:49,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-07 07:23:49,328 INFO L87 Difference]: Start difference. First operand 1410 states and 1760 transitions. Second operand has 6 states, 5 states have (on average 19.2) internal successors, (96), 6 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:23:49,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:23:49,532 INFO L93 Difference]: Finished difference Result 1816 states and 2326 transitions. [2021-11-07 07:23:49,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-07 07:23:49,532 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 19.2) internal successors, (96), 6 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 624 [2021-11-07 07:23:49,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:23:49,539 INFO L225 Difference]: With dead ends: 1816 [2021-11-07 07:23:49,539 INFO L226 Difference]: Without dead ends: 1815 [2021-11-07 07:23:49,540 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 632 GetRequests, 623 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-11-07 07:23:49,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1815 states. [2021-11-07 07:23:49,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1815 to 1488. [2021-11-07 07:23:49,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1488 states, 1487 states have (on average 1.2629455279085406) internal successors, (1878), 1487 states have internal predecessors, (1878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:23:49,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1488 states to 1488 states and 1878 transitions. [2021-11-07 07:23:49,632 INFO L78 Accepts]: Start accepts. Automaton has 1488 states and 1878 transitions. Word has length 624 [2021-11-07 07:23:49,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:23:49,633 INFO L470 AbstractCegarLoop]: Abstraction has 1488 states and 1878 transitions. [2021-11-07 07:23:49,633 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 19.2) internal successors, (96), 6 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:23:49,633 INFO L276 IsEmpty]: Start isEmpty. Operand 1488 states and 1878 transitions. [2021-11-07 07:23:49,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 627 [2021-11-07 07:23:49,639 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:23:49,640 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 7, 6, 6, 6, 6, 6, 5, 5, 4, 3, 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 07:23:49,686 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2021-11-07 07:23:49,868 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2021-11-07 07:23:49,868 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 07:23:49,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:23:49,868 INFO L85 PathProgramCache]: Analyzing trace with hash -924950983, now seen corresponding path program 1 times [2021-11-07 07:23:49,869 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:23:49,869 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524636863] [2021-11-07 07:23:49,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:23:49,869 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:23:49,919 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 07:23:49,919 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [40125918] [2021-11-07 07:23:49,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:23:49,920 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:23:49,920 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:23:49,921 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:23:49,942 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2021-11-07 07:23:53,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:23:53,047 INFO L263 TraceCheckSpWp]: Trace formula consists of 1755 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-07 07:23:53,061 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:23:54,748 INFO L134 CoverageAnalysis]: Checked inductivity of 2610 backedges. 0 proven. 127 refuted. 0 times theorem prover too weak. 2483 trivial. 0 not checked. [2021-11-07 07:23:54,748 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:23:54,749 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524636863] [2021-11-07 07:23:54,749 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 07:23:54,749 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [40125918] [2021-11-07 07:23:54,749 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [40125918] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:23:54,749 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-07 07:23:54,750 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2021-11-07 07:23:54,750 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008236599] [2021-11-07 07:23:54,751 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-07 07:23:54,751 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:23:54,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-07 07:23:54,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2021-11-07 07:23:54,752 INFO L87 Difference]: Start difference. First operand 1488 states and 1878 transitions. Second operand has 16 states, 15 states have (on average 8.6) internal successors, (129), 15 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:23:55,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:23:55,111 INFO L93 Difference]: Finished difference Result 1751 states and 2241 transitions. [2021-11-07 07:23:55,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-07 07:23:55,111 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 8.6) internal successors, (129), 15 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 626 [2021-11-07 07:23:55,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:23:55,117 INFO L225 Difference]: With dead ends: 1751 [2021-11-07 07:23:55,118 INFO L226 Difference]: Without dead ends: 1750 [2021-11-07 07:23:55,118 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 638 GetRequests, 611 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=279, Invalid=533, Unknown=0, NotChecked=0, Total=812 [2021-11-07 07:23:55,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1750 states. [2021-11-07 07:23:55,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1750 to 1604. [2021-11-07 07:23:55,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1604 states, 1603 states have (on average 1.275109170305677) internal successors, (2044), 1603 states have internal predecessors, (2044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:23:55,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1604 states to 1604 states and 2044 transitions. [2021-11-07 07:23:55,217 INFO L78 Accepts]: Start accepts. Automaton has 1604 states and 2044 transitions. Word has length 626 [2021-11-07 07:23:55,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:23:55,218 INFO L470 AbstractCegarLoop]: Abstraction has 1604 states and 2044 transitions. [2021-11-07 07:23:55,218 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 8.6) internal successors, (129), 15 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:23:55,218 INFO L276 IsEmpty]: Start isEmpty. Operand 1604 states and 2044 transitions. [2021-11-07 07:23:55,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 635 [2021-11-07 07:23:55,226 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:23:55,226 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 8, 7, 7, 7, 7, 7, 6, 6, 4, 3, 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 07:23:55,274 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2021-11-07 07:23:55,440 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2021-11-07 07:23:55,440 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 07:23:55,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:23:55,440 INFO L85 PathProgramCache]: Analyzing trace with hash 1850283304, now seen corresponding path program 2 times [2021-11-07 07:23:55,440 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:23:55,441 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786973605] [2021-11-07 07:23:55,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:23:55,441 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:23:55,477 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 07:23:55,477 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1169008431] [2021-11-07 07:23:55,477 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 07:23:55,478 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:23:55,478 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:23:55,484 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:23:55,484 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2021-11-07 07:23:58,774 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 07:23:58,774 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:23:58,785 INFO L263 TraceCheckSpWp]: Trace formula consists of 1787 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-07 07:23:58,791 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:24:00,434 INFO L134 CoverageAnalysis]: Checked inductivity of 2659 backedges. 0 proven. 176 refuted. 0 times theorem prover too weak. 2483 trivial. 0 not checked. [2021-11-07 07:24:00,435 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:24:00,435 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786973605] [2021-11-07 07:24:00,435 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 07:24:00,435 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1169008431] [2021-11-07 07:24:00,435 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1169008431] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:24:00,435 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-07 07:24:00,435 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2021-11-07 07:24:00,436 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689739168] [2021-11-07 07:24:00,436 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-07 07:24:00,436 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:24:00,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-07 07:24:00,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2021-11-07 07:24:00,437 INFO L87 Difference]: Start difference. First operand 1604 states and 2044 transitions. Second operand has 18 states, 17 states have (on average 8.058823529411764) internal successors, (137), 17 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:24:00,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:24:00,801 INFO L93 Difference]: Finished difference Result 1867 states and 2407 transitions. [2021-11-07 07:24:00,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-07 07:24:00,802 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 8.058823529411764) internal successors, (137), 17 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 634 [2021-11-07 07:24:00,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:24:00,811 INFO L225 Difference]: With dead ends: 1867 [2021-11-07 07:24:00,812 INFO L226 Difference]: Without dead ends: 1866 [2021-11-07 07:24:00,813 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 648 GetRequests, 617 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=359, Invalid=697, Unknown=0, NotChecked=0, Total=1056 [2021-11-07 07:24:00,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1866 states. [2021-11-07 07:24:00,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1866 to 1720. [2021-11-07 07:24:00,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1720 states, 1719 states have (on average 1.285631180919139) internal successors, (2210), 1719 states have internal predecessors, (2210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:24:00,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1720 states to 1720 states and 2210 transitions. [2021-11-07 07:24:00,904 INFO L78 Accepts]: Start accepts. Automaton has 1720 states and 2210 transitions. Word has length 634 [2021-11-07 07:24:00,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:24:00,905 INFO L470 AbstractCegarLoop]: Abstraction has 1720 states and 2210 transitions. [2021-11-07 07:24:00,905 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 8.058823529411764) internal successors, (137), 17 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:24:00,905 INFO L276 IsEmpty]: Start isEmpty. Operand 1720 states and 2210 transitions. [2021-11-07 07:24:00,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 643 [2021-11-07 07:24:00,911 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:24:00,912 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 8, 8, 8, 8, 8, 7, 7, 4, 3, 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 07:24:00,947 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2021-11-07 07:24:01,113 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2021-11-07 07:24:01,114 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 07:24:01,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:24:01,114 INFO L85 PathProgramCache]: Analyzing trace with hash 478244119, now seen corresponding path program 3 times [2021-11-07 07:24:01,114 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:24:01,114 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164597707] [2021-11-07 07:24:01,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:24:01,115 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:24:01,177 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 07:24:01,177 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1634037883] [2021-11-07 07:24:01,178 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 07:24:01,178 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:24:01,178 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:24:01,182 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:24:01,186 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b59ed8-962e-4b2b-bba5-2aa9d16e4d12/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process