./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test1-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version f8e1c903 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test1-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX --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 7f552e336cb6eb3ea16ba25a84411e1d0c8dcfaa2b088c21df87ffefed1a84a7 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-f8e1c90 [2021-11-09 10:35:13,286 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-09 10:35:13,290 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-09 10:35:13,344 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-09 10:35:13,344 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-09 10:35:13,346 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-09 10:35:13,348 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-09 10:35:13,351 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-09 10:35:13,353 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-09 10:35:13,354 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-09 10:35:13,356 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-09 10:35:13,357 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-09 10:35:13,358 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-09 10:35:13,360 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-09 10:35:13,362 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-09 10:35:13,363 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-09 10:35:13,365 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-09 10:35:13,366 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-09 10:35:13,368 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-09 10:35:13,371 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-09 10:35:13,374 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-09 10:35:13,375 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-09 10:35:13,377 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-09 10:35:13,378 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-09 10:35:13,382 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-09 10:35:13,383 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-09 10:35:13,384 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-09 10:35:13,385 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-09 10:35:13,385 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-09 10:35:13,387 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-09 10:35:13,387 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-09 10:35:13,388 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-09 10:35:13,389 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-09 10:35:13,390 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-09 10:35:13,392 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-09 10:35:13,392 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-09 10:35:13,393 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-09 10:35:13,393 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-09 10:35:13,394 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-09 10:35:13,395 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-09 10:35:13,396 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-09 10:35:13,397 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/config/svcomp-Overflow-32bit-Automizer_Default.epf [2021-11-09 10:35:13,419 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-09 10:35:13,420 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-09 10:35:13,420 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-09 10:35:13,421 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-09 10:35:13,422 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-09 10:35:13,423 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-09 10:35:13,423 INFO L138 SettingsManager]: * Use SBE=true [2021-11-09 10:35:13,424 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-09 10:35:13,424 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-09 10:35:13,424 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-09 10:35:13,425 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-09 10:35:13,425 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-09 10:35:13,426 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-09 10:35:13,426 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-09 10:35:13,426 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-09 10:35:13,427 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-09 10:35:13,427 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-11-09 10:35:13,428 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-09 10:35:13,428 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-09 10:35:13,428 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-09 10:35:13,429 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-09 10:35:13,429 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-09 10:35:13,430 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-09 10:35:13,430 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-09 10:35:13,431 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 10:35:13,431 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-09 10:35:13,431 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-09 10:35:13,432 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-09 10:35:13,432 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-09 10:35:13,432 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-09 10:35:13,433 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-09 10:35:13,433 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-09 10:35:13,433 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_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7f552e336cb6eb3ea16ba25a84411e1d0c8dcfaa2b088c21df87ffefed1a84a7 [2021-11-09 10:35:13,667 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-09 10:35:13,689 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-09 10:35:13,691 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-09 10:35:13,693 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-09 10:35:13,694 INFO L275 PluginConnector]: CDTParser initialized [2021-11-09 10:35:13,695 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test1-2.i [2021-11-09 10:35:13,771 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/data/f11c91caa/43791be94fec4174b51b774545bf2be8/FLAGeb3247a97 [2021-11-09 10:35:14,363 INFO L306 CDTParser]: Found 1 translation units. [2021-11-09 10:35:14,364 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test1-2.i [2021-11-09 10:35:14,395 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/data/f11c91caa/43791be94fec4174b51b774545bf2be8/FLAGeb3247a97 [2021-11-09 10:35:14,593 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/data/f11c91caa/43791be94fec4174b51b774545bf2be8 [2021-11-09 10:35:14,595 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-09 10:35:14,598 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-09 10:35:14,600 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-09 10:35:14,600 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-09 10:35:14,604 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-09 10:35:14,604 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:35:14" (1/1) ... [2021-11-09 10:35:14,605 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46399afe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:35:14, skipping insertion in model container [2021-11-09 10:35:14,605 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:35:14" (1/1) ... [2021-11-09 10:35:14,612 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-09 10:35:14,677 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-09 10:35:15,188 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_6b51caa8-fab5-494b-9c1d-fb875c3badbf/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test1-2.i[33021,33034] [2021-11-09 10:35:15,354 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 10:35:15,368 INFO L203 MainTranslator]: Completed pre-run [2021-11-09 10:35:15,420 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_6b51caa8-fab5-494b-9c1d-fb875c3badbf/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test1-2.i[33021,33034] [2021-11-09 10:35:15,513 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 10:35:15,569 INFO L208 MainTranslator]: Completed translation [2021-11-09 10:35:15,570 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:35:15 WrapperNode [2021-11-09 10:35:15,571 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-09 10:35:15,572 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-09 10:35:15,572 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-09 10:35:15,572 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-09 10:35:15,581 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:35:15" (1/1) ... [2021-11-09 10:35:15,639 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:35:15" (1/1) ... [2021-11-09 10:35:15,728 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-09 10:35:15,732 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-09 10:35:15,732 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-09 10:35:15,732 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-09 10:35:15,741 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:35:15" (1/1) ... [2021-11-09 10:35:15,742 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:35:15" (1/1) ... [2021-11-09 10:35:15,768 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:35:15" (1/1) ... [2021-11-09 10:35:15,769 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:35:15" (1/1) ... [2021-11-09 10:35:15,845 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:35:15" (1/1) ... [2021-11-09 10:35:15,856 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:35:15" (1/1) ... [2021-11-09 10:35:15,860 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:35:15" (1/1) ... [2021-11-09 10:35:15,868 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-09 10:35:15,869 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-09 10:35:15,870 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-09 10:35:15,870 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-09 10:35:15,871 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:35:15" (1/1) ... [2021-11-09 10:35:15,897 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 10:35:15,909 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:35:15,932 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-09 10:35:15,958 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-09 10:35:15,983 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-09 10:35:15,984 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-09 10:35:15,984 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-09 10:35:15,984 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-09 10:35:15,984 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-09 10:35:15,984 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-09 10:35:15,984 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-09 10:35:15,984 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-09 10:35:15,985 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-09 10:35:15,985 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-09 10:35:17,342 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-09 10:35:17,343 INFO L299 CfgBuilder]: Removed 72 assume(true) statements. [2021-11-09 10:35:17,345 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 10:35:17 BoogieIcfgContainer [2021-11-09 10:35:17,345 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-09 10:35:17,348 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-09 10:35:17,348 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-09 10:35:17,352 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-09 10:35:17,352 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 10:35:14" (1/3) ... [2021-11-09 10:35:17,353 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6af14be5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 10:35:17, skipping insertion in model container [2021-11-09 10:35:17,353 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:35:15" (2/3) ... [2021-11-09 10:35:17,354 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6af14be5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 10:35:17, skipping insertion in model container [2021-11-09 10:35:17,354 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 10:35:17" (3/3) ... [2021-11-09 10:35:17,355 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_SAX_test1-2.i [2021-11-09 10:35:17,362 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-09 10:35:17,362 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-11-09 10:35:17,416 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-09 10:35:17,423 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 [2021-11-09 10:35:17,423 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-11-09 10:35:17,444 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) [2021-11-09 10:35:17,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-09 10:35:17,449 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:35:17,450 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-09 10:35:17,450 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)] === [2021-11-09 10:35:17,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:35:17,456 INFO L85 PathProgramCache]: Analyzing trace with hash 889985515, now seen corresponding path program 1 times [2021-11-09 10:35:17,465 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:35:17,466 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748916235] [2021-11-09 10:35:17,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:35:17,467 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:35:17,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:35:17,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:35:17,652 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:35:17,653 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748916235] [2021-11-09 10:35:17,654 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748916235] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:35:17,654 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:35:17,654 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 10:35:17,656 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187688815] [2021-11-09 10:35:17,660 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 10:35:17,661 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:35:17,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 10:35:17,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 10:35:17,677 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) [2021-11-09 10:35:17,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:35:17,756 INFO L93 Difference]: Finished difference Result 408 states and 679 transitions. [2021-11-09 10:35:17,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 10:35:17,758 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 [2021-11-09 10:35:17,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:35:17,771 INFO L225 Difference]: With dead ends: 408 [2021-11-09 10:35:17,771 INFO L226 Difference]: Without dead ends: 218 [2021-11-09 10:35:17,775 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 [2021-11-09 10:35:17,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2021-11-09 10:35:17,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 129. [2021-11-09 10:35:17,817 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) [2021-11-09 10:35:17,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 167 transitions. [2021-11-09 10:35:17,820 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 167 transitions. Word has length 6 [2021-11-09 10:35:17,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:35:17,820 INFO L470 AbstractCegarLoop]: Abstraction has 129 states and 167 transitions. [2021-11-09 10:35:17,821 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) [2021-11-09 10:35:17,821 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 167 transitions. [2021-11-09 10:35:17,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-09 10:35:17,823 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:35:17,823 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] [2021-11-09 10:35:17,824 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-09 10:35:17,824 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)] === [2021-11-09 10:35:17,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:35:17,825 INFO L85 PathProgramCache]: Analyzing trace with hash 703481080, now seen corresponding path program 1 times [2021-11-09 10:35:17,825 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:35:17,826 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272374511] [2021-11-09 10:35:17,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:35:17,826 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:35:17,870 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 10:35:17,870 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2033925903] [2021-11-09 10:35:17,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:35:17,871 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:35:17,871 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:35:17,872 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:35:17,883 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-09 10:35:18,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:35:18,067 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-09 10:35:18,077 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:35:18,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:35:18,289 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:35:18,290 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272374511] [2021-11-09 10:35:18,290 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 10:35:18,290 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2033925903] [2021-11-09 10:35:18,291 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2033925903] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:35:18,291 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:35:18,291 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 10:35:18,292 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086903601] [2021-11-09 10:35:18,293 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 10:35:18,294 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:35:18,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 10:35:18,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 10:35:18,297 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) [2021-11-09 10:35:18,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:35:18,416 INFO L93 Difference]: Finished difference Result 273 states and 359 transitions. [2021-11-09 10:35:18,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 10:35:18,417 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 [2021-11-09 10:35:18,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:35:18,423 INFO L225 Difference]: With dead ends: 273 [2021-11-09 10:35:18,425 INFO L226 Difference]: Without dead ends: 150 [2021-11-09 10:35:18,426 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 [2021-11-09 10:35:18,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2021-11-09 10:35:18,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 149. [2021-11-09 10:35:18,450 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) [2021-11-09 10:35:18,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 187 transitions. [2021-11-09 10:35:18,454 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 187 transitions. Word has length 56 [2021-11-09 10:35:18,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:35:18,456 INFO L470 AbstractCegarLoop]: Abstraction has 149 states and 187 transitions. [2021-11-09 10:35:18,457 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) [2021-11-09 10:35:18,458 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 187 transitions. [2021-11-09 10:35:18,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-09 10:35:18,461 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:35:18,461 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] [2021-11-09 10:35:18,502 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-09 10:35:18,678 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:35:18,679 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)] === [2021-11-09 10:35:18,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:35:18,680 INFO L85 PathProgramCache]: Analyzing trace with hash 680848826, now seen corresponding path program 1 times [2021-11-09 10:35:18,680 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:35:18,680 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948325529] [2021-11-09 10:35:18,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:35:18,681 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:35:18,702 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 10:35:18,703 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1356353816] [2021-11-09 10:35:18,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:35:18,703 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:35:18,703 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:35:18,704 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:35:18,722 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-09 10:35:18,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:35:18,877 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-09 10:35:18,881 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:35:19,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:35:19,024 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:35:19,024 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948325529] [2021-11-09 10:35:19,024 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 10:35:19,025 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1356353816] [2021-11-09 10:35:19,025 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1356353816] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:35:19,025 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:35:19,025 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-09 10:35:19,026 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818117438] [2021-11-09 10:35:19,026 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 10:35:19,026 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:35:19,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 10:35:19,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 10:35:19,027 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) [2021-11-09 10:35:19,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:35:19,108 INFO L93 Difference]: Finished difference Result 283 states and 359 transitions. [2021-11-09 10:35:19,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 10:35:19,109 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 [2021-11-09 10:35:19,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:35:19,111 INFO L225 Difference]: With dead ends: 283 [2021-11-09 10:35:19,111 INFO L226 Difference]: Without dead ends: 140 [2021-11-09 10:35:19,115 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 [2021-11-09 10:35:19,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2021-11-09 10:35:19,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 135. [2021-11-09 10:35:19,137 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) [2021-11-09 10:35:19,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 166 transitions. [2021-11-09 10:35:19,138 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 166 transitions. Word has length 56 [2021-11-09 10:35:19,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:35:19,139 INFO L470 AbstractCegarLoop]: Abstraction has 135 states and 166 transitions. [2021-11-09 10:35:19,139 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) [2021-11-09 10:35:19,140 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 166 transitions. [2021-11-09 10:35:19,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-09 10:35:19,147 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:35:19,147 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] [2021-11-09 10:35:19,179 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-09 10:35:19,362 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:35:19,363 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)] === [2021-11-09 10:35:19,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:35:19,363 INFO L85 PathProgramCache]: Analyzing trace with hash -1567550038, now seen corresponding path program 1 times [2021-11-09 10:35:19,364 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:35:19,364 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753266232] [2021-11-09 10:35:19,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:35:19,364 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:35:19,384 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 10:35:19,385 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [201687680] [2021-11-09 10:35:19,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:35:19,385 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:35:19,386 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:35:19,403 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:35:19,418 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-09 10:35:19,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:35:19,580 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-09 10:35:19,584 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:35:19,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:35:19,774 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:35:19,775 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753266232] [2021-11-09 10:35:19,775 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 10:35:19,775 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [201687680] [2021-11-09 10:35:19,775 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [201687680] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:35:19,776 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:35:19,776 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-09 10:35:19,776 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117851151] [2021-11-09 10:35:19,776 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 10:35:19,777 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:35:19,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 10:35:19,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-09 10:35:19,779 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) [2021-11-09 10:35:19,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:35:19,899 INFO L93 Difference]: Finished difference Result 395 states and 488 transitions. [2021-11-09 10:35:19,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 10:35:19,900 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 [2021-11-09 10:35:19,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:35:19,902 INFO L225 Difference]: With dead ends: 395 [2021-11-09 10:35:19,902 INFO L226 Difference]: Without dead ends: 266 [2021-11-09 10:35:19,904 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 [2021-11-09 10:35:19,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2021-11-09 10:35:19,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 158. [2021-11-09 10:35:19,919 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) [2021-11-09 10:35:19,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 191 transitions. [2021-11-09 10:35:19,920 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 191 transitions. Word has length 56 [2021-11-09 10:35:19,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:35:19,921 INFO L470 AbstractCegarLoop]: Abstraction has 158 states and 191 transitions. [2021-11-09 10:35:19,921 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) [2021-11-09 10:35:19,922 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 191 transitions. [2021-11-09 10:35:19,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-09 10:35:19,923 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:35:19,923 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] [2021-11-09 10:35:19,959 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-09 10:35:20,137 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:35:20,137 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)] === [2021-11-09 10:35:20,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:35:20,138 INFO L85 PathProgramCache]: Analyzing trace with hash 2145970276, now seen corresponding path program 1 times [2021-11-09 10:35:20,138 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:35:20,138 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025731069] [2021-11-09 10:35:20,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:35:20,139 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:35:20,158 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 10:35:20,158 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [20291] [2021-11-09 10:35:20,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:35:20,159 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:35:20,159 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:35:20,160 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:35:20,187 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-09 10:35:20,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:35:20,369 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-09 10:35:20,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:35:20,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:35:20,498 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:35:20,503 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025731069] [2021-11-09 10:35:20,504 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 10:35:20,504 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [20291] [2021-11-09 10:35:20,504 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [20291] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:35:20,504 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:35:20,510 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-09 10:35:20,510 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67352008] [2021-11-09 10:35:20,511 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 10:35:20,511 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:35:20,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 10:35:20,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 10:35:20,512 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) [2021-11-09 10:35:20,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:35:20,567 INFO L93 Difference]: Finished difference Result 282 states and 343 transitions. [2021-11-09 10:35:20,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 10:35:20,568 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 [2021-11-09 10:35:20,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:35:20,570 INFO L225 Difference]: With dead ends: 282 [2021-11-09 10:35:20,570 INFO L226 Difference]: Without dead ends: 130 [2021-11-09 10:35:20,571 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 [2021-11-09 10:35:20,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2021-11-09 10:35:20,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 126. [2021-11-09 10:35:20,576 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) [2021-11-09 10:35:20,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 152 transitions. [2021-11-09 10:35:20,576 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 152 transitions. Word has length 56 [2021-11-09 10:35:20,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:35:20,577 INFO L470 AbstractCegarLoop]: Abstraction has 126 states and 152 transitions. [2021-11-09 10:35:20,577 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) [2021-11-09 10:35:20,577 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 152 transitions. [2021-11-09 10:35:20,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-09 10:35:20,583 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:35:20,583 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] [2021-11-09 10:35:20,619 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-09 10:35:20,801 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:35:20,801 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)] === [2021-11-09 10:35:20,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:35:20,802 INFO L85 PathProgramCache]: Analyzing trace with hash -1590182292, now seen corresponding path program 1 times [2021-11-09 10:35:20,802 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:35:20,802 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730975982] [2021-11-09 10:35:20,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:35:20,803 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:35:20,837 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 10:35:20,837 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [732397346] [2021-11-09 10:35:20,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:35:20,837 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:35:20,838 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:35:20,842 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:35:20,883 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-09 10:35:21,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:35:21,081 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-09 10:35:21,093 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:35:21,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:35:21,314 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:35:21,314 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730975982] [2021-11-09 10:35:21,314 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 10:35:21,315 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [732397346] [2021-11-09 10:35:21,315 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [732397346] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:35:21,315 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:35:21,315 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 10:35:21,316 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876714999] [2021-11-09 10:35:21,317 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 10:35:21,318 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:35:21,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 10:35:21,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 10:35:21,319 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) [2021-11-09 10:35:21,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:35:21,356 INFO L93 Difference]: Finished difference Result 212 states and 253 transitions. [2021-11-09 10:35:21,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 10:35:21,357 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 [2021-11-09 10:35:21,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:35:21,359 INFO L225 Difference]: With dead ends: 212 [2021-11-09 10:35:21,359 INFO L226 Difference]: Without dead ends: 211 [2021-11-09 10:35:21,360 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 [2021-11-09 10:35:21,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2021-11-09 10:35:21,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 209. [2021-11-09 10:35:21,368 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) [2021-11-09 10:35:21,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 250 transitions. [2021-11-09 10:35:21,369 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 250 transitions. Word has length 56 [2021-11-09 10:35:21,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:35:21,372 INFO L470 AbstractCegarLoop]: Abstraction has 209 states and 250 transitions. [2021-11-09 10:35:21,373 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) [2021-11-09 10:35:21,373 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 250 transitions. [2021-11-09 10:35:21,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-09 10:35:21,374 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:35:21,374 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] [2021-11-09 10:35:21,412 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-09 10:35:21,590 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:35:21,591 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)] === [2021-11-09 10:35:21,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:35:21,591 INFO L85 PathProgramCache]: Analyzing trace with hash -2051010371, now seen corresponding path program 1 times [2021-11-09 10:35:21,591 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:35:21,591 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805623570] [2021-11-09 10:35:21,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:35:21,592 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:35:21,612 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 10:35:21,612 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [277278364] [2021-11-09 10:35:21,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:35:21,613 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:35:21,613 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:35:21,619 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:35:21,638 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-09 10:35:21,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:35:21,844 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-09 10:35:21,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:35:22,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:35:22,003 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:35:22,004 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805623570] [2021-11-09 10:35:22,004 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 10:35:22,005 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [277278364] [2021-11-09 10:35:22,005 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [277278364] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:35:22,005 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:35:22,005 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 10:35:22,006 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968670377] [2021-11-09 10:35:22,006 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 10:35:22,006 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:35:22,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 10:35:22,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 10:35:22,010 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) [2021-11-09 10:35:22,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:35:22,050 INFO L93 Difference]: Finished difference Result 209 states and 250 transitions. [2021-11-09 10:35:22,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 10:35:22,051 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 [2021-11-09 10:35:22,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:35:22,056 INFO L225 Difference]: With dead ends: 209 [2021-11-09 10:35:22,056 INFO L226 Difference]: Without dead ends: 208 [2021-11-09 10:35:22,056 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 [2021-11-09 10:35:22,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2021-11-09 10:35:22,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 208. [2021-11-09 10:35:22,065 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) [2021-11-09 10:35:22,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 249 transitions. [2021-11-09 10:35:22,066 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 249 transitions. Word has length 57 [2021-11-09 10:35:22,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:35:22,067 INFO L470 AbstractCegarLoop]: Abstraction has 208 states and 249 transitions. [2021-11-09 10:35:22,068 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) [2021-11-09 10:35:22,068 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 249 transitions. [2021-11-09 10:35:22,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-09 10:35:22,069 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:35:22,069 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] [2021-11-09 10:35:22,108 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-09 10:35:22,282 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-11-09 10:35:22,283 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)] === [2021-11-09 10:35:22,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:35:22,283 INFO L85 PathProgramCache]: Analyzing trace with hash -1850265242, now seen corresponding path program 1 times [2021-11-09 10:35:22,283 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:35:22,283 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636410074] [2021-11-09 10:35:22,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:35:22,284 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:35:22,300 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 10:35:22,300 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1936193970] [2021-11-09 10:35:22,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:35:22,300 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:35:22,300 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:35:22,301 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:35:22,330 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-09 10:35:22,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:35:22,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-09 10:35:22,543 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:35:22,769 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:35:22,770 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:35:22,771 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636410074] [2021-11-09 10:35:22,771 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 10:35:22,771 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1936193970] [2021-11-09 10:35:22,771 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1936193970] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:35:22,772 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 10:35:22,772 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-11-09 10:35:22,772 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176413353] [2021-11-09 10:35:22,773 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 10:35:22,773 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:35:22,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 10:35:22,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-09 10:35:22,774 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) [2021-11-09 10:35:30,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:35:30,844 INFO L93 Difference]: Finished difference Result 328 states and 395 transitions. [2021-11-09 10:35:30,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 10:35:30,844 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 [2021-11-09 10:35:30,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:35:30,846 INFO L225 Difference]: With dead ends: 328 [2021-11-09 10:35:30,846 INFO L226 Difference]: Without dead ends: 299 [2021-11-09 10:35:30,847 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 [2021-11-09 10:35:30,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2021-11-09 10:35:30,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 210. [2021-11-09 10:35:30,856 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) [2021-11-09 10:35:30,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 251 transitions. [2021-11-09 10:35:30,857 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 251 transitions. Word has length 61 [2021-11-09 10:35:30,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:35:30,857 INFO L470 AbstractCegarLoop]: Abstraction has 210 states and 251 transitions. [2021-11-09 10:35:30,858 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) [2021-11-09 10:35:30,858 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 251 transitions. [2021-11-09 10:35:30,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-09 10:35:30,858 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:35:30,859 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] [2021-11-09 10:35:30,895 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-09 10:35:31,074 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:35:31,074 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)] === [2021-11-09 10:35:31,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:35:31,075 INFO L85 PathProgramCache]: Analyzing trace with hash -1850587164, now seen corresponding path program 1 times [2021-11-09 10:35:31,075 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:35:31,075 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160328913] [2021-11-09 10:35:31,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:35:31,076 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:35:31,091 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 10:35:31,091 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1886643251] [2021-11-09 10:35:31,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:35:31,092 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:35:31,092 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:35:31,093 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:35:31,124 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-09 10:35:31,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:35:31,412 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-09 10:35:31,415 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:35:31,737 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:35:31,738 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:35:31,738 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160328913] [2021-11-09 10:35:31,738 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 10:35:31,739 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1886643251] [2021-11-09 10:35:31,739 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1886643251] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:35:31,739 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:35:31,739 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 10:35:31,739 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146658961] [2021-11-09 10:35:31,740 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 10:35:31,740 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:35:31,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 10:35:31,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 10:35:31,741 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) [2021-11-09 10:35:31,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:35:31,787 INFO L93 Difference]: Finished difference Result 369 states and 448 transitions. [2021-11-09 10:35:31,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 10:35:31,787 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 [2021-11-09 10:35:31,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:35:31,789 INFO L225 Difference]: With dead ends: 369 [2021-11-09 10:35:31,789 INFO L226 Difference]: Without dead ends: 208 [2021-11-09 10:35:31,790 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 [2021-11-09 10:35:31,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2021-11-09 10:35:31,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 208. [2021-11-09 10:35:31,798 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) [2021-11-09 10:35:31,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 248 transitions. [2021-11-09 10:35:31,799 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 248 transitions. Word has length 61 [2021-11-09 10:35:31,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:35:31,800 INFO L470 AbstractCegarLoop]: Abstraction has 208 states and 248 transitions. [2021-11-09 10:35:31,800 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) [2021-11-09 10:35:31,800 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 248 transitions. [2021-11-09 10:35:31,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-09 10:35:31,801 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:35:31,801 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] [2021-11-09 10:35:31,839 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-09 10:35:32,026 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:35:32,026 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)] === [2021-11-09 10:35:32,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:35:32,027 INFO L85 PathProgramCache]: Analyzing trace with hash 182245876, now seen corresponding path program 1 times [2021-11-09 10:35:32,027 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:35:32,027 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218105219] [2021-11-09 10:35:32,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:35:32,027 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:35:32,043 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 10:35:32,043 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [594359433] [2021-11-09 10:35:32,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:35:32,043 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:35:32,043 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:35:32,044 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:35:32,057 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-09 10:35:32,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:35:32,538 INFO L263 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-09 10:35:32,539 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:35:32,723 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:35:32,723 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:35:32,723 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218105219] [2021-11-09 10:35:32,724 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 10:35:32,724 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [594359433] [2021-11-09 10:35:32,724 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [594359433] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:35:32,724 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:35:32,724 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 10:35:32,724 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100922060] [2021-11-09 10:35:32,725 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 10:35:32,725 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:35:32,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 10:35:32,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 10:35:32,726 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) [2021-11-09 10:35:32,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:35:32,764 INFO L93 Difference]: Finished difference Result 372 states and 452 transitions. [2021-11-09 10:35:32,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 10:35:32,765 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 [2021-11-09 10:35:32,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:35:32,767 INFO L225 Difference]: With dead ends: 372 [2021-11-09 10:35:32,767 INFO L226 Difference]: Without dead ends: 210 [2021-11-09 10:35:32,768 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 [2021-11-09 10:35:32,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2021-11-09 10:35:32,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 210. [2021-11-09 10:35:32,786 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) [2021-11-09 10:35:32,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 250 transitions. [2021-11-09 10:35:32,787 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 250 transitions. Word has length 68 [2021-11-09 10:35:32,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:35:32,788 INFO L470 AbstractCegarLoop]: Abstraction has 210 states and 250 transitions. [2021-11-09 10:35:32,788 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) [2021-11-09 10:35:32,788 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 250 transitions. [2021-11-09 10:35:32,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-09 10:35:32,789 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:35:32,789 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] [2021-11-09 10:35:32,831 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-09 10:35:33,002 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-09 10:35:33,002 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)] === [2021-11-09 10:35:33,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:35:33,003 INFO L85 PathProgramCache]: Analyzing trace with hash 1174858719, now seen corresponding path program 1 times [2021-11-09 10:35:33,003 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:35:33,003 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137493593] [2021-11-09 10:35:33,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:35:33,003 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:35:33,019 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 10:35:33,019 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1141650043] [2021-11-09 10:35:33,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:35:33,019 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:35:33,020 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:35:33,020 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:35:33,037 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-09 10:35:33,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:35:33,691 INFO L263 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-09 10:35:33,693 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:35:33,848 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-09 10:35:33,848 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:35:33,848 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137493593] [2021-11-09 10:35:33,848 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 10:35:33,848 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1141650043] [2021-11-09 10:35:33,849 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1141650043] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:35:33,849 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:35:33,849 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 10:35:33,849 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274641744] [2021-11-09 10:35:33,850 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 10:35:33,850 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:35:33,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 10:35:33,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 10:35:33,851 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) [2021-11-09 10:35:33,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:35:33,876 INFO L93 Difference]: Finished difference Result 379 states and 460 transitions. [2021-11-09 10:35:33,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 10:35:33,877 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 [2021-11-09 10:35:33,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:35:33,879 INFO L225 Difference]: With dead ends: 379 [2021-11-09 10:35:33,879 INFO L226 Difference]: Without dead ends: 212 [2021-11-09 10:35:33,880 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 [2021-11-09 10:35:33,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2021-11-09 10:35:33,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 212. [2021-11-09 10:35:33,888 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) [2021-11-09 10:35:33,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 252 transitions. [2021-11-09 10:35:33,889 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 252 transitions. Word has length 69 [2021-11-09 10:35:33,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:35:33,890 INFO L470 AbstractCegarLoop]: Abstraction has 212 states and 252 transitions. [2021-11-09 10:35:33,891 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) [2021-11-09 10:35:33,891 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 252 transitions. [2021-11-09 10:35:33,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-09 10:35:33,891 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:35:33,892 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] [2021-11-09 10:35:33,929 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-09 10:35:34,118 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:35:34,118 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)] === [2021-11-09 10:35:34,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:35:34,119 INFO L85 PathProgramCache]: Analyzing trace with hash 31134581, now seen corresponding path program 1 times [2021-11-09 10:35:34,119 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:35:34,119 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620164733] [2021-11-09 10:35:34,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:35:34,120 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:35:34,143 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 10:35:34,152 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1714537980] [2021-11-09 10:35:34,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:35:34,153 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:35:34,153 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:35:34,154 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:35:34,170 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-09 10:35:34,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:35:34,719 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-09 10:35:34,722 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:35:34,887 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-09 10:35:34,887 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:35:34,888 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620164733] [2021-11-09 10:35:34,888 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 10:35:34,888 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1714537980] [2021-11-09 10:35:34,888 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1714537980] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:35:34,888 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 10:35:34,888 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2021-11-09 10:35:34,888 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097464057] [2021-11-09 10:35:34,889 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 10:35:34,889 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:35:34,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 10:35:34,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 10:35:34,890 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) [2021-11-09 10:35:34,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:35:34,936 INFO L93 Difference]: Finished difference Result 382 states and 463 transitions. [2021-11-09 10:35:34,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 10:35:34,937 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 [2021-11-09 10:35:34,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:35:34,938 INFO L225 Difference]: With dead ends: 382 [2021-11-09 10:35:34,938 INFO L226 Difference]: Without dead ends: 214 [2021-11-09 10:35:34,939 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 [2021-11-09 10:35:34,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2021-11-09 10:35:34,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 214. [2021-11-09 10:35:34,947 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) [2021-11-09 10:35:34,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 254 transitions. [2021-11-09 10:35:34,948 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 254 transitions. Word has length 70 [2021-11-09 10:35:34,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:35:34,948 INFO L470 AbstractCegarLoop]: Abstraction has 214 states and 254 transitions. [2021-11-09 10:35:34,948 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) [2021-11-09 10:35:34,949 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 254 transitions. [2021-11-09 10:35:34,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-09 10:35:34,949 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:35:34,950 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] [2021-11-09 10:35:34,992 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-09 10:35:35,170 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:35:35,170 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)] === [2021-11-09 10:35:35,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:35:35,171 INFO L85 PathProgramCache]: Analyzing trace with hash -1064575329, now seen corresponding path program 2 times [2021-11-09 10:35:35,171 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:35:35,171 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684155634] [2021-11-09 10:35:35,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:35:35,171 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:35:35,198 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 10:35:35,198 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [971165460] [2021-11-09 10:35:35,198 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-09 10:35:35,198 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:35:35,199 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:35:35,204 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:35:35,209 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-09 10:35:35,848 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-09 10:35:35,848 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 10:35:35,851 INFO L263 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-09 10:35:35,853 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:35:36,086 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:35:36,087 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:35:36,087 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684155634] [2021-11-09 10:35:36,087 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 10:35:36,087 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [971165460] [2021-11-09 10:35:36,087 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [971165460] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:35:36,087 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 10:35:36,087 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-11-09 10:35:36,088 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678701681] [2021-11-09 10:35:36,088 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-09 10:35:36,088 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:35:36,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-09 10:35:36,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-09 10:35:36,090 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) [2021-11-09 10:35:36,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:35:36,190 INFO L93 Difference]: Finished difference Result 665 states and 811 transitions. [2021-11-09 10:35:36,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-09 10:35:36,191 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 [2021-11-09 10:35:36,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:35:36,194 INFO L225 Difference]: With dead ends: 665 [2021-11-09 10:35:36,194 INFO L226 Difference]: Without dead ends: 500 [2021-11-09 10:35:36,195 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 [2021-11-09 10:35:36,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2021-11-09 10:35:36,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 216. [2021-11-09 10:35:36,208 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) [2021-11-09 10:35:36,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 256 transitions. [2021-11-09 10:35:36,209 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 256 transitions. Word has length 71 [2021-11-09 10:35:36,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:35:36,209 INFO L470 AbstractCegarLoop]: Abstraction has 216 states and 256 transitions. [2021-11-09 10:35:36,209 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) [2021-11-09 10:35:36,209 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 256 transitions. [2021-11-09 10:35:36,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-09 10:35:36,210 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:35:36,210 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] [2021-11-09 10:35:36,252 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-09 10:35:36,426 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-11-09 10:35:36,426 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)] === [2021-11-09 10:35:36,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:35:36,427 INFO L85 PathProgramCache]: Analyzing trace with hash 1178107028, now seen corresponding path program 3 times [2021-11-09 10:35:36,427 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:35:36,427 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307319226] [2021-11-09 10:35:36,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:35:36,427 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:35:36,455 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 10:35:36,455 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2121277044] [2021-11-09 10:35:36,455 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-09 10:35:36,455 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:35:36,455 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:35:36,456 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:35:36,471 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-09 10:35:37,010 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-09 10:35:37,010 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 10:35:37,013 INFO L263 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-09 10:35:37,015 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:35:37,257 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-09 10:35:37,257 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:35:37,257 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307319226] [2021-11-09 10:35:37,257 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 10:35:37,257 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2121277044] [2021-11-09 10:35:37,258 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2121277044] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:35:37,258 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 10:35:37,258 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2021-11-09 10:35:37,258 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74497706] [2021-11-09 10:35:37,260 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 10:35:37,260 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:35:37,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 10:35:37,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-09 10:35:37,261 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) [2021-11-09 10:35:37,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:35:37,339 INFO L93 Difference]: Finished difference Result 309 states and 364 transitions. [2021-11-09 10:35:37,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 10:35:37,339 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 [2021-11-09 10:35:37,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:35:37,342 INFO L225 Difference]: With dead ends: 309 [2021-11-09 10:35:37,342 INFO L226 Difference]: Without dead ends: 308 [2021-11-09 10:35:37,343 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 [2021-11-09 10:35:37,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2021-11-09 10:35:37,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 219. [2021-11-09 10:35:37,355 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) [2021-11-09 10:35:37,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 259 transitions. [2021-11-09 10:35:37,356 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 259 transitions. Word has length 72 [2021-11-09 10:35:37,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:35:37,356 INFO L470 AbstractCegarLoop]: Abstraction has 219 states and 259 transitions. [2021-11-09 10:35:37,357 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) [2021-11-09 10:35:37,357 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 259 transitions. [2021-11-09 10:35:37,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-11-09 10:35:37,358 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:35:37,358 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] [2021-11-09 10:35:37,402 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-11-09 10:35:37,574 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-11-09 10:35:37,575 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)] === [2021-11-09 10:35:37,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:35:37,575 INFO L85 PathProgramCache]: Analyzing trace with hash -916715049, now seen corresponding path program 1 times [2021-11-09 10:35:37,575 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:35:37,575 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294035869] [2021-11-09 10:35:37,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:35:37,575 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:35:37,590 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 10:35:37,591 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [518336148] [2021-11-09 10:35:37,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:35:37,591 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:35:37,591 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:35:37,592 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:35:37,613 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-09 10:35:38,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:35:38,048 INFO L263 TraceCheckSpWp]: Trace formula consists of 412 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-09 10:35:38,051 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:35:38,484 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-09 10:35:38,484 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:35:38,484 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294035869] [2021-11-09 10:35:38,484 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 10:35:38,485 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [518336148] [2021-11-09 10:35:38,485 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [518336148] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:35:38,485 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 10:35:38,485 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-11-09 10:35:38,486 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991606250] [2021-11-09 10:35:38,486 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-09 10:35:38,486 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:35:38,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-09 10:35:38,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-09 10:35:38,487 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) [2021-11-09 10:35:38,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:35:38,566 INFO L93 Difference]: Finished difference Result 308 states and 363 transitions. [2021-11-09 10:35:38,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-09 10:35:38,567 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 [2021-11-09 10:35:38,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:35:38,569 INFO L225 Difference]: With dead ends: 308 [2021-11-09 10:35:38,570 INFO L226 Difference]: Without dead ends: 307 [2021-11-09 10:35:38,572 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 [2021-11-09 10:35:38,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2021-11-09 10:35:38,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 306. [2021-11-09 10:35:38,587 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) [2021-11-09 10:35:38,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 361 transitions. [2021-11-09 10:35:38,589 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 361 transitions. Word has length 122 [2021-11-09 10:35:38,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:35:38,589 INFO L470 AbstractCegarLoop]: Abstraction has 306 states and 361 transitions. [2021-11-09 10:35:38,590 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) [2021-11-09 10:35:38,590 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 361 transitions. [2021-11-09 10:35:38,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-11-09 10:35:38,593 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:35:38,594 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] [2021-11-09 10:35:38,630 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-11-09 10:35:38,806 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-11-09 10:35:38,806 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)] === [2021-11-09 10:35:38,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:35:38,807 INFO L85 PathProgramCache]: Analyzing trace with hash -1843375909, now seen corresponding path program 1 times [2021-11-09 10:35:38,807 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:35:38,807 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122170584] [2021-11-09 10:35:38,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:35:38,807 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:35:38,823 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 10:35:38,824 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [735649423] [2021-11-09 10:35:38,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:35:38,824 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:35:38,824 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:35:38,825 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:35:38,838 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-09 10:35:39,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:35:39,272 INFO L263 TraceCheckSpWp]: Trace formula consists of 436 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-09 10:35:39,276 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:35:39,700 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-09 10:35:39,701 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:35:39,701 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122170584] [2021-11-09 10:35:39,701 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 10:35:39,701 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [735649423] [2021-11-09 10:35:39,701 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [735649423] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:35:39,701 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 10:35:39,701 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-11-09 10:35:39,702 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967909626] [2021-11-09 10:35:39,702 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-09 10:35:39,702 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:35:39,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-09 10:35:39,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-09 10:35:39,703 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) [2021-11-09 10:35:45,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:35:45,841 INFO L93 Difference]: Finished difference Result 430 states and 511 transitions. [2021-11-09 10:35:45,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-09 10:35:45,842 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 [2021-11-09 10:35:45,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:35:45,844 INFO L225 Difference]: With dead ends: 430 [2021-11-09 10:35:45,845 INFO L226 Difference]: Without dead ends: 401 [2021-11-09 10:35:45,845 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 [2021-11-09 10:35:45,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2021-11-09 10:35:45,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 308. [2021-11-09 10:35:45,861 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) [2021-11-09 10:35:45,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 363 transitions. [2021-11-09 10:35:45,862 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 363 transitions. Word has length 127 [2021-11-09 10:35:45,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:35:45,863 INFO L470 AbstractCegarLoop]: Abstraction has 308 states and 363 transitions. [2021-11-09 10:35:45,863 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) [2021-11-09 10:35:45,863 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 363 transitions. [2021-11-09 10:35:45,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-11-09 10:35:45,865 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:35:45,865 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] [2021-11-09 10:35:45,909 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-11-09 10:35:46,078 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-11-09 10:35:46,079 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)] === [2021-11-09 10:35:46,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:35:46,079 INFO L85 PathProgramCache]: Analyzing trace with hash -1843697831, now seen corresponding path program 1 times [2021-11-09 10:35:46,079 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:35:46,079 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108268596] [2021-11-09 10:35:46,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:35:46,080 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:35:46,094 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 10:35:46,095 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [650025092] [2021-11-09 10:35:46,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:35:46,095 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:35:46,095 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:35:46,105 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:35:46,106 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-11-09 10:35:47,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:35:47,688 INFO L263 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-09 10:35:47,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:35:48,036 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 42 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-09 10:35:48,036 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:35:48,036 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108268596] [2021-11-09 10:35:48,036 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 10:35:48,037 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [650025092] [2021-11-09 10:35:48,037 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [650025092] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:35:48,037 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 10:35:48,037 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-11-09 10:35:48,037 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719271727] [2021-11-09 10:35:48,038 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 10:35:48,038 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:35:48,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 10:35:48,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-09 10:35:48,039 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) [2021-11-09 10:35:48,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:35:48,088 INFO L93 Difference]: Finished difference Result 574 states and 686 transitions. [2021-11-09 10:35:48,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 10:35:48,089 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 [2021-11-09 10:35:48,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:35:48,108 INFO L225 Difference]: With dead ends: 574 [2021-11-09 10:35:48,108 INFO L226 Difference]: Without dead ends: 311 [2021-11-09 10:35:48,109 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 [2021-11-09 10:35:48,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2021-11-09 10:35:48,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 311. [2021-11-09 10:35:48,121 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) [2021-11-09 10:35:48,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 366 transitions. [2021-11-09 10:35:48,123 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 366 transitions. Word has length 127 [2021-11-09 10:35:48,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:35:48,123 INFO L470 AbstractCegarLoop]: Abstraction has 311 states and 366 transitions. [2021-11-09 10:35:48,123 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) [2021-11-09 10:35:48,124 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 366 transitions. [2021-11-09 10:35:48,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-11-09 10:35:48,125 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:35:48,125 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] [2021-11-09 10:35:48,142 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-11-09 10:35:48,335 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-11-09 10:35:48,337 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)] === [2021-11-09 10:35:48,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:35:48,340 INFO L85 PathProgramCache]: Analyzing trace with hash -1717123217, now seen corresponding path program 2 times [2021-11-09 10:35:48,340 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:35:48,340 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103485370] [2021-11-09 10:35:48,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:35:48,341 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:35:48,360 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 10:35:48,360 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [640901543] [2021-11-09 10:35:48,360 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-09 10:35:48,360 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:35:48,361 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:35:48,361 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:35:48,364 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-11-09 10:35:50,127 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-09 10:35:50,127 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 10:35:50,134 INFO L263 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-09 10:35:50,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:35:50,526 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 42 proven. 9 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-11-09 10:35:50,526 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:35:50,526 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103485370] [2021-11-09 10:35:50,526 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 10:35:50,527 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [640901543] [2021-11-09 10:35:50,527 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [640901543] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:35:50,527 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 10:35:50,527 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-11-09 10:35:50,527 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448257705] [2021-11-09 10:35:50,528 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-09 10:35:50,528 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:35:50,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-09 10:35:50,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-09 10:35:50,529 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) [2021-11-09 10:35:50,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:35:50,710 INFO L93 Difference]: Finished difference Result 1243 states and 1492 transitions. [2021-11-09 10:35:50,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-09 10:35:50,711 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 [2021-11-09 10:35:50,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:35:50,717 INFO L225 Difference]: With dead ends: 1243 [2021-11-09 10:35:50,717 INFO L226 Difference]: Without dead ends: 983 [2021-11-09 10:35:50,722 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 [2021-11-09 10:35:50,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 983 states. [2021-11-09 10:35:50,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 983 to 314. [2021-11-09 10:35:50,747 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) [2021-11-09 10:35:50,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 369 transitions. [2021-11-09 10:35:50,749 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 369 transitions. Word has length 128 [2021-11-09 10:35:50,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:35:50,749 INFO L470 AbstractCegarLoop]: Abstraction has 314 states and 369 transitions. [2021-11-09 10:35:50,749 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) [2021-11-09 10:35:50,750 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 369 transitions. [2021-11-09 10:35:50,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-11-09 10:35:50,751 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:35:50,752 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] [2021-11-09 10:35:50,802 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-11-09 10:35:50,970 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-11-09 10:35:50,971 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)] === [2021-11-09 10:35:50,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:35:50,971 INFO L85 PathProgramCache]: Analyzing trace with hash -841333512, now seen corresponding path program 3 times [2021-11-09 10:35:50,971 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:35:50,971 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180651584] [2021-11-09 10:35:50,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:35:50,972 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:35:51,005 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 10:35:51,005 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [635326580] [2021-11-09 10:35:51,005 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-09 10:35:51,006 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:35:51,006 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:35:51,007 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:35:51,026 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-11-09 10:36:00,410 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-09 10:36:00,411 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 10:36:00,423 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-09 10:36:00,425 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:36:00,982 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-09 10:36:00,982 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:36:00,982 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180651584] [2021-11-09 10:36:00,982 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 10:36:00,983 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [635326580] [2021-11-09 10:36:00,983 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [635326580] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:36:00,983 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:36:00,983 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-09 10:36:00,983 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871720458] [2021-11-09 10:36:00,984 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-09 10:36:00,984 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:36:00,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-09 10:36:00,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-09 10:36:00,985 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) [2021-11-09 10:36:01,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:36:01,081 INFO L93 Difference]: Finished difference Result 314 states and 369 transitions. [2021-11-09 10:36:01,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 10:36:01,081 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 [2021-11-09 10:36:01,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:36:01,084 INFO L225 Difference]: With dead ends: 314 [2021-11-09 10:36:01,084 INFO L226 Difference]: Without dead ends: 313 [2021-11-09 10:36:01,084 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 [2021-11-09 10:36:01,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2021-11-09 10:36:01,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 313. [2021-11-09 10:36:01,111 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) [2021-11-09 10:36:01,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 368 transitions. [2021-11-09 10:36:01,113 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 368 transitions. Word has length 129 [2021-11-09 10:36:01,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:36:01,113 INFO L470 AbstractCegarLoop]: Abstraction has 313 states and 368 transitions. [2021-11-09 10:36:01,114 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) [2021-11-09 10:36:01,114 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 368 transitions. [2021-11-09 10:36:01,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-11-09 10:36:01,116 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:36:01,117 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] [2021-11-09 10:36:01,137 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-11-09 10:36:01,337 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:36:01,337 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)] === [2021-11-09 10:36:01,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:36:01,338 INFO L85 PathProgramCache]: Analyzing trace with hash 1481863483, now seen corresponding path program 2 times [2021-11-09 10:36:01,338 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:36:01,338 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999950805] [2021-11-09 10:36:01,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:36:01,338 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:36:01,353 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 10:36:01,354 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [728985854] [2021-11-09 10:36:01,354 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-09 10:36:01,354 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:36:01,354 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:36:01,357 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:36:01,364 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-11-09 10:36:01,925 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-09 10:36:01,926 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 10:36:01,928 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-09 10:36:01,932 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:36:02,469 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 104 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2021-11-09 10:36:02,469 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:36:02,469 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999950805] [2021-11-09 10:36:02,469 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 10:36:02,469 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [728985854] [2021-11-09 10:36:02,470 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [728985854] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:36:02,470 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:36:02,470 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 10:36:02,470 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119891241] [2021-11-09 10:36:02,471 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 10:36:02,471 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:36:02,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 10:36:02,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 10:36:02,472 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) [2021-11-09 10:36:02,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:36:02,535 INFO L93 Difference]: Finished difference Result 313 states and 368 transitions. [2021-11-09 10:36:02,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 10:36:02,536 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 [2021-11-09 10:36:02,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:36:02,539 INFO L225 Difference]: With dead ends: 313 [2021-11-09 10:36:02,539 INFO L226 Difference]: Without dead ends: 312 [2021-11-09 10:36:02,540 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 [2021-11-09 10:36:02,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2021-11-09 10:36:02,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 312. [2021-11-09 10:36:02,577 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) [2021-11-09 10:36:02,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 367 transitions. [2021-11-09 10:36:02,579 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 367 transitions. Word has length 179 [2021-11-09 10:36:02,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:36:02,579 INFO L470 AbstractCegarLoop]: Abstraction has 312 states and 367 transitions. [2021-11-09 10:36:02,580 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) [2021-11-09 10:36:02,580 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 367 transitions. [2021-11-09 10:36:02,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2021-11-09 10:36:02,583 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:36:02,583 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] [2021-11-09 10:36:02,631 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-11-09 10:36:02,798 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:36:02,798 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)] === [2021-11-09 10:36:02,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:36:02,799 INFO L85 PathProgramCache]: Analyzing trace with hash 861267959, now seen corresponding path program 2 times [2021-11-09 10:36:02,799 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:36:02,799 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712705166] [2021-11-09 10:36:02,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:36:02,800 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:36:02,843 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 10:36:02,844 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [108129063] [2021-11-09 10:36:02,844 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-09 10:36:02,844 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:36:02,845 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:36:02,846 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:36:02,873 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-11-09 10:36:03,574 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-09 10:36:03,575 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 10:36:03,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-09 10:36:03,582 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:36:04,199 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2021-11-09 10:36:04,199 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:36:04,200 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712705166] [2021-11-09 10:36:04,200 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 10:36:04,200 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [108129063] [2021-11-09 10:36:04,200 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [108129063] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:36:04,200 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:36:04,200 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-09 10:36:04,200 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707632391] [2021-11-09 10:36:04,201 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 10:36:04,201 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:36:04,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 10:36:04,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 10:36:04,202 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) [2021-11-09 10:36:04,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:36:04,275 INFO L93 Difference]: Finished difference Result 338 states and 403 transitions. [2021-11-09 10:36:04,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 10:36:04,275 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 [2021-11-09 10:36:04,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:36:04,278 INFO L225 Difference]: With dead ends: 338 [2021-11-09 10:36:04,278 INFO L226 Difference]: Without dead ends: 337 [2021-11-09 10:36:04,278 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 [2021-11-09 10:36:04,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2021-11-09 10:36:04,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 314. [2021-11-09 10:36:04,299 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) [2021-11-09 10:36:04,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 369 transitions. [2021-11-09 10:36:04,300 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 369 transitions. Word has length 184 [2021-11-09 10:36:04,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:36:04,301 INFO L470 AbstractCegarLoop]: Abstraction has 314 states and 369 transitions. [2021-11-09 10:36:04,301 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) [2021-11-09 10:36:04,301 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 369 transitions. [2021-11-09 10:36:04,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2021-11-09 10:36:04,304 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:36:04,304 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] [2021-11-09 10:36:04,342 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-11-09 10:36:04,525 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:36:04,526 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)] === [2021-11-09 10:36:04,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:36:04,526 INFO L85 PathProgramCache]: Analyzing trace with hash 929503394, now seen corresponding path program 1 times [2021-11-09 10:36:04,526 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:36:04,527 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466040953] [2021-11-09 10:36:04,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:36:04,527 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:36:04,559 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 10:36:04,559 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [717063868] [2021-11-09 10:36:04,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:36:04,559 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:36:04,560 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:36:04,561 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:36:04,586 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-11-09 10:36:05,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:36:05,346 INFO L263 TraceCheckSpWp]: Trace formula consists of 586 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-09 10:36:05,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:36:05,990 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 0 proven. 164 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-09 10:36:05,991 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:36:05,991 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466040953] [2021-11-09 10:36:05,991 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 10:36:05,991 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [717063868] [2021-11-09 10:36:05,991 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [717063868] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:36:05,992 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 10:36:05,992 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-11-09 10:36:05,992 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564532113] [2021-11-09 10:36:05,993 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-09 10:36:05,993 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:36:05,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-09 10:36:05,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-09 10:36:05,994 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) [2021-11-09 10:36:06,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:36:06,103 INFO L93 Difference]: Finished difference Result 532 states and 628 transitions. [2021-11-09 10:36:06,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-09 10:36:06,106 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 [2021-11-09 10:36:06,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:36:06,109 INFO L225 Difference]: With dead ends: 532 [2021-11-09 10:36:06,110 INFO L226 Difference]: Without dead ends: 501 [2021-11-09 10:36:06,111 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 [2021-11-09 10:36:06,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 501 states. [2021-11-09 10:36:06,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 501 to 408. [2021-11-09 10:36:06,169 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) [2021-11-09 10:36:06,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 478 transitions. [2021-11-09 10:36:06,173 INFO L78 Accepts]: Start accepts. Automaton has 408 states and 478 transitions. Word has length 185 [2021-11-09 10:36:06,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:36:06,174 INFO L470 AbstractCegarLoop]: Abstraction has 408 states and 478 transitions. [2021-11-09 10:36:06,174 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) [2021-11-09 10:36:06,174 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 478 transitions. [2021-11-09 10:36:06,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2021-11-09 10:36:06,179 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:36:06,179 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] [2021-11-09 10:36:06,226 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2021-11-09 10:36:06,402 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-11-09 10:36:06,403 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)] === [2021-11-09 10:36:06,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:36:06,403 INFO L85 PathProgramCache]: Analyzing trace with hash 380057375, now seen corresponding path program 2 times [2021-11-09 10:36:06,403 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:36:06,403 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173652752] [2021-11-09 10:36:06,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:36:06,403 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:36:06,421 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 10:36:06,421 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1860474642] [2021-11-09 10:36:06,421 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-09 10:36:06,422 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:36:06,422 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:36:06,423 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:36:06,430 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-11-09 10:36:07,103 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-09 10:36:07,104 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 10:36:07,105 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-09 10:36:07,109 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:36:07,853 INFO L134 CoverageAnalysis]: Checked inductivity of 340 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 340 trivial. 0 not checked. [2021-11-09 10:36:07,853 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:36:07,854 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173652752] [2021-11-09 10:36:07,854 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 10:36:07,854 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1860474642] [2021-11-09 10:36:07,854 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1860474642] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:36:07,854 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:36:07,854 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-09 10:36:07,854 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684926813] [2021-11-09 10:36:07,855 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 10:36:07,855 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:36:07,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 10:36:07,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 10:36:07,856 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) [2021-11-09 10:36:07,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:36:07,907 INFO L93 Difference]: Finished difference Result 408 states and 478 transitions. [2021-11-09 10:36:07,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 10:36:07,907 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 [2021-11-09 10:36:07,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:36:07,911 INFO L225 Difference]: With dead ends: 408 [2021-11-09 10:36:07,911 INFO L226 Difference]: Without dead ends: 407 [2021-11-09 10:36:07,912 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 [2021-11-09 10:36:07,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2021-11-09 10:36:07,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 407. [2021-11-09 10:36:07,943 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) [2021-11-09 10:36:07,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 477 transitions. [2021-11-09 10:36:07,945 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 477 transitions. Word has length 240 [2021-11-09 10:36:07,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:36:07,946 INFO L470 AbstractCegarLoop]: Abstraction has 407 states and 477 transitions. [2021-11-09 10:36:07,946 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) [2021-11-09 10:36:07,947 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 477 transitions. [2021-11-09 10:36:07,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2021-11-09 10:36:07,951 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:36:07,952 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] [2021-11-09 10:36:07,996 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2021-11-09 10:36:08,174 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-11-09 10:36:08,175 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)] === [2021-11-09 10:36:08,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:36:08,175 INFO L85 PathProgramCache]: Analyzing trace with hash 1096121545, now seen corresponding path program 1 times [2021-11-09 10:36:08,176 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:36:08,176 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468497133] [2021-11-09 10:36:08,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:36:08,176 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:36:08,200 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 10:36:08,200 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1805471303] [2021-11-09 10:36:08,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:36:08,200 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:36:08,201 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:36:08,202 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:36:08,211 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-11-09 10:36:09,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:36:09,141 INFO L263 TraceCheckSpWp]: Trace formula consists of 754 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-09 10:36:09,147 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:36:09,913 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 0 proven. 328 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-09 10:36:09,914 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:36:09,914 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468497133] [2021-11-09 10:36:09,914 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 10:36:09,914 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1805471303] [2021-11-09 10:36:09,914 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1805471303] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:36:09,914 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 10:36:09,914 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-11-09 10:36:09,915 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518172404] [2021-11-09 10:36:09,915 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-09 10:36:09,915 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:36:09,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-09 10:36:09,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-11-09 10:36:09,916 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) [2021-11-09 10:36:10,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:36:10,081 INFO L93 Difference]: Finished difference Result 624 states and 735 transitions. [2021-11-09 10:36:10,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-09 10:36:10,082 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 [2021-11-09 10:36:10,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:36:10,086 INFO L225 Difference]: With dead ends: 624 [2021-11-09 10:36:10,087 INFO L226 Difference]: Without dead ends: 594 [2021-11-09 10:36:10,087 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 [2021-11-09 10:36:10,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 594 states. [2021-11-09 10:36:10,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 594 to 501. [2021-11-09 10:36:10,128 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) [2021-11-09 10:36:10,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 501 states to 501 states and 586 transitions. [2021-11-09 10:36:10,130 INFO L78 Accepts]: Start accepts. Automaton has 501 states and 586 transitions. Word has length 247 [2021-11-09 10:36:10,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:36:10,131 INFO L470 AbstractCegarLoop]: Abstraction has 501 states and 586 transitions. [2021-11-09 10:36:10,132 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) [2021-11-09 10:36:10,132 INFO L276 IsEmpty]: Start isEmpty. Operand 501 states and 586 transitions. [2021-11-09 10:36:10,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2021-11-09 10:36:10,134 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:36:10,135 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] [2021-11-09 10:36:10,179 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2021-11-09 10:36:10,362 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:36:10,362 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)] === [2021-11-09 10:36:10,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:36:10,363 INFO L85 PathProgramCache]: Analyzing trace with hash -1356288378, now seen corresponding path program 2 times [2021-11-09 10:36:10,363 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:36:10,363 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16891719] [2021-11-09 10:36:10,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:36:10,364 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:36:10,400 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 10:36:10,400 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [372584346] [2021-11-09 10:36:10,401 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-09 10:36:10,401 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:36:10,401 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:36:10,402 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:36:10,422 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-11-09 10:36:11,395 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-09 10:36:11,396 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 10:36:11,402 INFO L263 TraceCheckSpWp]: Trace formula consists of 891 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-09 10:36:11,409 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:36:12,474 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 0 proven. 547 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-09 10:36:12,474 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:36:12,474 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16891719] [2021-11-09 10:36:12,474 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 10:36:12,474 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [372584346] [2021-11-09 10:36:12,474 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [372584346] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:36:12,475 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 10:36:12,475 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2021-11-09 10:36:12,475 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730441372] [2021-11-09 10:36:12,476 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-09 10:36:12,476 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:36:12,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-09 10:36:12,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-11-09 10:36:12,477 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) [2021-11-09 10:36:12,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:36:12,686 INFO L93 Difference]: Finished difference Result 718 states and 844 transitions. [2021-11-09 10:36:12,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-09 10:36:12,687 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 [2021-11-09 10:36:12,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:36:12,692 INFO L225 Difference]: With dead ends: 718 [2021-11-09 10:36:12,692 INFO L226 Difference]: Without dead ends: 688 [2021-11-09 10:36:12,693 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 [2021-11-09 10:36:12,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 688 states. [2021-11-09 10:36:12,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 688 to 595. [2021-11-09 10:36:12,766 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) [2021-11-09 10:36:12,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 595 states to 595 states and 695 transitions. [2021-11-09 10:36:12,769 INFO L78 Accepts]: Start accepts. Automaton has 595 states and 695 transitions. Word has length 302 [2021-11-09 10:36:12,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:36:12,770 INFO L470 AbstractCegarLoop]: Abstraction has 595 states and 695 transitions. [2021-11-09 10:36:12,771 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) [2021-11-09 10:36:12,771 INFO L276 IsEmpty]: Start isEmpty. Operand 595 states and 695 transitions. [2021-11-09 10:36:12,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 358 [2021-11-09 10:36:12,774 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:36:12,775 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] [2021-11-09 10:36:12,816 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2021-11-09 10:36:12,990 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-11-09 10:36:12,990 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)] === [2021-11-09 10:36:12,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:36:12,991 INFO L85 PathProgramCache]: Analyzing trace with hash 988646441, now seen corresponding path program 3 times [2021-11-09 10:36:12,991 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:36:12,991 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604792021] [2021-11-09 10:36:12,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:36:12,992 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:36:13,027 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 10:36:13,027 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1135658889] [2021-11-09 10:36:13,027 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-09 10:36:13,027 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:36:13,028 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:36:13,028 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:36:13,054 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2021-11-09 10:36:14,243 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-09 10:36:14,243 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 10:36:14,245 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-09 10:36:14,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:36:15,399 INFO L134 CoverageAnalysis]: Checked inductivity of 835 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 833 trivial. 0 not checked. [2021-11-09 10:36:15,399 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:36:15,400 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604792021] [2021-11-09 10:36:15,400 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 10:36:15,400 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1135658889] [2021-11-09 10:36:15,400 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1135658889] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:36:15,400 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 10:36:15,401 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2021-11-09 10:36:15,401 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674350537] [2021-11-09 10:36:15,401 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-09 10:36:15,402 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:36:15,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-09 10:36:15,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-09 10:36:15,403 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) [2021-11-09 10:36:15,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:36:15,544 INFO L93 Difference]: Finished difference Result 644 states and 764 transitions. [2021-11-09 10:36:15,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-09 10:36:15,545 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 [2021-11-09 10:36:15,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:36:15,551 INFO L225 Difference]: With dead ends: 644 [2021-11-09 10:36:15,551 INFO L226 Difference]: Without dead ends: 643 [2021-11-09 10:36:15,552 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 [2021-11-09 10:36:15,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2021-11-09 10:36:15,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 621. [2021-11-09 10:36:15,615 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) [2021-11-09 10:36:15,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 621 states to 621 states and 731 transitions. [2021-11-09 10:36:15,619 INFO L78 Accepts]: Start accepts. Automaton has 621 states and 731 transitions. Word has length 357 [2021-11-09 10:36:15,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:36:15,620 INFO L470 AbstractCegarLoop]: Abstraction has 621 states and 731 transitions. [2021-11-09 10:36:15,620 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) [2021-11-09 10:36:15,620 INFO L276 IsEmpty]: Start isEmpty. Operand 621 states and 731 transitions. [2021-11-09 10:36:15,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2021-11-09 10:36:15,625 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:36:15,625 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] [2021-11-09 10:36:15,677 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2021-11-09 10:36:15,850 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:36:15,851 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)] === [2021-11-09 10:36:15,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:36:15,852 INFO L85 PathProgramCache]: Analyzing trace with hash -109984744, now seen corresponding path program 4 times [2021-11-09 10:36:15,852 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:36:15,852 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106716763] [2021-11-09 10:36:15,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:36:15,852 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:36:15,893 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 10:36:15,894 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [772119488] [2021-11-09 10:36:15,894 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-09 10:36:15,894 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:36:15,894 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:36:15,897 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:36:15,898 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2021-11-09 10:36:18,679 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-09 10:36:18,679 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 10:36:18,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 1060 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-09 10:36:18,695 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:36:19,963 INFO L134 CoverageAnalysis]: Checked inductivity of 845 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 833 trivial. 0 not checked. [2021-11-09 10:36:19,964 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:36:19,964 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106716763] [2021-11-09 10:36:19,964 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 10:36:19,964 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [772119488] [2021-11-09 10:36:19,965 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [772119488] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:36:19,965 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 10:36:19,965 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-11-09 10:36:19,965 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548010999] [2021-11-09 10:36:19,966 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-09 10:36:19,966 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:36:19,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-09 10:36:19,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-11-09 10:36:19,967 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) [2021-11-09 10:36:20,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:36:20,158 INFO L93 Difference]: Finished difference Result 670 states and 800 transitions. [2021-11-09 10:36:20,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-09 10:36:20,158 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 [2021-11-09 10:36:20,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:36:20,166 INFO L225 Difference]: With dead ends: 670 [2021-11-09 10:36:20,166 INFO L226 Difference]: Without dead ends: 669 [2021-11-09 10:36:20,166 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 [2021-11-09 10:36:20,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 669 states. [2021-11-09 10:36:20,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 669 to 647. [2021-11-09 10:36:20,215 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) [2021-11-09 10:36:20,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 647 states to 647 states and 767 transitions. [2021-11-09 10:36:20,219 INFO L78 Accepts]: Start accepts. Automaton has 647 states and 767 transitions. Word has length 365 [2021-11-09 10:36:20,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:36:20,220 INFO L470 AbstractCegarLoop]: Abstraction has 647 states and 767 transitions. [2021-11-09 10:36:20,220 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) [2021-11-09 10:36:20,220 INFO L276 IsEmpty]: Start isEmpty. Operand 647 states and 767 transitions. [2021-11-09 10:36:20,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 374 [2021-11-09 10:36:20,224 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:36:20,225 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] [2021-11-09 10:36:20,264 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2021-11-09 10:36:20,442 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-11-09 10:36:20,443 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)] === [2021-11-09 10:36:20,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:36:20,444 INFO L85 PathProgramCache]: Analyzing trace with hash 330472711, now seen corresponding path program 5 times [2021-11-09 10:36:20,444 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:36:20,444 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525676915] [2021-11-09 10:36:20,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:36:20,445 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:36:20,511 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 10:36:20,512 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2088192219] [2021-11-09 10:36:20,512 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-09 10:36:20,512 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:36:20,513 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:36:20,535 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:36:20,542 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2021-11-09 10:36:22,687 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-11-09 10:36:22,688 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 10:36:22,693 INFO L263 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-09 10:36:22,700 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:36:23,659 INFO L134 CoverageAnalysis]: Checked inductivity of 863 backedges. 191 proven. 12 refuted. 0 times theorem prover too weak. 660 trivial. 0 not checked. [2021-11-09 10:36:23,659 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:36:23,660 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525676915] [2021-11-09 10:36:23,660 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 10:36:23,661 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2088192219] [2021-11-09 10:36:23,661 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2088192219] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:36:23,661 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 10:36:23,662 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-11-09 10:36:23,662 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152640940] [2021-11-09 10:36:23,663 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-09 10:36:23,663 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:36:23,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-09 10:36:23,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-11-09 10:36:23,664 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) [2021-11-09 10:36:24,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:36:24,019 INFO L93 Difference]: Finished difference Result 2799 states and 3358 transitions. [2021-11-09 10:36:24,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-09 10:36:24,020 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 [2021-11-09 10:36:24,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:36:24,035 INFO L225 Difference]: With dead ends: 2799 [2021-11-09 10:36:24,036 INFO L226 Difference]: Without dead ends: 2204 [2021-11-09 10:36:24,041 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 [2021-11-09 10:36:24,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2204 states. [2021-11-09 10:36:24,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2204 to 653. [2021-11-09 10:36:24,112 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) [2021-11-09 10:36:24,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 653 states to 653 states and 773 transitions. [2021-11-09 10:36:24,115 INFO L78 Accepts]: Start accepts. Automaton has 653 states and 773 transitions. Word has length 373 [2021-11-09 10:36:24,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:36:24,116 INFO L470 AbstractCegarLoop]: Abstraction has 653 states and 773 transitions. [2021-11-09 10:36:24,116 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) [2021-11-09 10:36:24,116 INFO L276 IsEmpty]: Start isEmpty. Operand 653 states and 773 transitions. [2021-11-09 10:36:24,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2021-11-09 10:36:24,120 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:36:24,120 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] [2021-11-09 10:36:24,138 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2021-11-09 10:36:24,333 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-11-09 10:36:24,333 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)] === [2021-11-09 10:36:24,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:36:24,334 INFO L85 PathProgramCache]: Analyzing trace with hash 573922078, now seen corresponding path program 6 times [2021-11-09 10:36:24,334 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:36:24,334 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478111267] [2021-11-09 10:36:24,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:36:24,334 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:36:24,374 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 10:36:24,374 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1145856208] [2021-11-09 10:36:24,375 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-09 10:36:24,375 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:36:24,375 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:36:24,376 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:36:24,402 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2021-11-09 10:36:25,994 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-11-09 10:36:25,994 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 10:36:25,997 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-09 10:36:26,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:36:27,039 INFO L134 CoverageAnalysis]: Checked inductivity of 867 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 851 trivial. 0 not checked. [2021-11-09 10:36:27,039 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:36:27,040 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478111267] [2021-11-09 10:36:27,040 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 10:36:27,040 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1145856208] [2021-11-09 10:36:27,040 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1145856208] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:36:27,040 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:36:27,041 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-09 10:36:27,041 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429391670] [2021-11-09 10:36:27,042 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 10:36:27,042 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:36:27,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 10:36:27,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-09 10:36:27,043 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) [2021-11-09 10:36:27,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:36:27,225 INFO L93 Difference]: Finished difference Result 720 states and 860 transitions. [2021-11-09 10:36:27,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-09 10:36:27,225 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 [2021-11-09 10:36:27,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:36:27,232 INFO L225 Difference]: With dead ends: 720 [2021-11-09 10:36:27,232 INFO L226 Difference]: Without dead ends: 719 [2021-11-09 10:36:27,233 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 [2021-11-09 10:36:27,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 719 states. [2021-11-09 10:36:27,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 719 to 692. [2021-11-09 10:36:27,312 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) [2021-11-09 10:36:27,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 692 states to 692 states and 832 transitions. [2021-11-09 10:36:27,316 INFO L78 Accepts]: Start accepts. Automaton has 692 states and 832 transitions. Word has length 374 [2021-11-09 10:36:27,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:36:27,317 INFO L470 AbstractCegarLoop]: Abstraction has 692 states and 832 transitions. [2021-11-09 10:36:27,318 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) [2021-11-09 10:36:27,318 INFO L276 IsEmpty]: Start isEmpty. Operand 692 states and 832 transitions. [2021-11-09 10:36:27,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 376 [2021-11-09 10:36:27,322 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:36:27,322 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] [2021-11-09 10:36:27,383 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2021-11-09 10:36:27,550 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-11-09 10:36:27,551 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)] === [2021-11-09 10:36:27,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:36:27,551 INFO L85 PathProgramCache]: Analyzing trace with hash 35048846, now seen corresponding path program 1 times [2021-11-09 10:36:27,551 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:36:27,551 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100706481] [2021-11-09 10:36:27,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:36:27,552 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:36:27,592 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 10:36:27,592 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1359906339] [2021-11-09 10:36:27,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:36:27,593 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:36:27,593 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:36:27,594 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:36:27,598 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2021-11-09 10:36:29,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:36:29,470 INFO L263 TraceCheckSpWp]: Trace formula consists of 1100 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-09 10:36:29,482 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:36:30,937 INFO L134 CoverageAnalysis]: Checked inductivity of 865 backedges. 0 proven. 821 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2021-11-09 10:36:30,937 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:36:30,937 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100706481] [2021-11-09 10:36:30,937 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 10:36:30,938 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1359906339] [2021-11-09 10:36:30,938 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1359906339] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:36:30,938 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 10:36:30,938 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2021-11-09 10:36:30,939 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010671259] [2021-11-09 10:36:30,940 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-09 10:36:30,940 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:36:30,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-09 10:36:30,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2021-11-09 10:36:30,941 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) [2021-11-09 10:36:31,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:36:31,225 INFO L93 Difference]: Finished difference Result 1002 states and 1223 transitions. [2021-11-09 10:36:31,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-09 10:36:31,226 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 [2021-11-09 10:36:31,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:36:31,233 INFO L225 Difference]: With dead ends: 1002 [2021-11-09 10:36:31,234 INFO L226 Difference]: Without dead ends: 881 [2021-11-09 10:36:31,235 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 [2021-11-09 10:36:31,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 881 states. [2021-11-09 10:36:31,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 881 to 787. [2021-11-09 10:36:31,315 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) [2021-11-09 10:36:31,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 787 states to 787 states and 942 transitions. [2021-11-09 10:36:31,319 INFO L78 Accepts]: Start accepts. Automaton has 787 states and 942 transitions. Word has length 375 [2021-11-09 10:36:31,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:36:31,320 INFO L470 AbstractCegarLoop]: Abstraction has 787 states and 942 transitions. [2021-11-09 10:36:31,320 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) [2021-11-09 10:36:31,320 INFO L276 IsEmpty]: Start isEmpty. Operand 787 states and 942 transitions. [2021-11-09 10:36:31,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 431 [2021-11-09 10:36:31,325 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:36:31,326 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] [2021-11-09 10:36:31,381 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2021-11-09 10:36:31,538 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:36:31,539 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)] === [2021-11-09 10:36:31,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:36:31,539 INFO L85 PathProgramCache]: Analyzing trace with hash -1971107713, now seen corresponding path program 2 times [2021-11-09 10:36:31,539 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:36:31,539 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313548167] [2021-11-09 10:36:31,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:36:31,540 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:36:31,582 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 10:36:31,582 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2053256130] [2021-11-09 10:36:31,583 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-09 10:36:31,583 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:36:31,583 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:36:31,584 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:36:31,590 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2021-11-09 10:36:33,621 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-09 10:36:33,621 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 10:36:33,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 1237 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-09 10:36:33,636 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:36:35,160 INFO L134 CoverageAnalysis]: Checked inductivity of 1194 backedges. 0 proven. 1150 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2021-11-09 10:36:35,161 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:36:35,161 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313548167] [2021-11-09 10:36:35,161 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 10:36:35,161 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2053256130] [2021-11-09 10:36:35,161 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2053256130] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:36:35,161 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 10:36:35,162 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2021-11-09 10:36:35,162 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992474649] [2021-11-09 10:36:35,163 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-09 10:36:35,163 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:36:35,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-09 10:36:35,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2021-11-09 10:36:35,164 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) [2021-11-09 10:36:35,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:36:35,520 INFO L93 Difference]: Finished difference Result 1097 states and 1333 transitions. [2021-11-09 10:36:35,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-09 10:36:35,521 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 [2021-11-09 10:36:35,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:36:35,529 INFO L225 Difference]: With dead ends: 1097 [2021-11-09 10:36:35,530 INFO L226 Difference]: Without dead ends: 976 [2021-11-09 10:36:35,531 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 436 GetRequests, 414 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=178, Invalid=374, Unknown=0, NotChecked=0, Total=552 [2021-11-09 10:36:35,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 976 states. [2021-11-09 10:36:35,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 976 to 882. [2021-11-09 10:36:35,628 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) [2021-11-09 10:36:35,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 882 states to 882 states and 1052 transitions. [2021-11-09 10:36:35,631 INFO L78 Accepts]: Start accepts. Automaton has 882 states and 1052 transitions. Word has length 430 [2021-11-09 10:36:35,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:36:35,633 INFO L470 AbstractCegarLoop]: Abstraction has 882 states and 1052 transitions. [2021-11-09 10:36:35,633 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) [2021-11-09 10:36:35,633 INFO L276 IsEmpty]: Start isEmpty. Operand 882 states and 1052 transitions. [2021-11-09 10:36:35,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 486 [2021-11-09 10:36:35,640 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:36:35,641 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] [2021-11-09 10:36:35,703 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2021-11-09 10:36:35,854 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:36:35,855 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)] === [2021-11-09 10:36:35,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:36:35,855 INFO L85 PathProgramCache]: Analyzing trace with hash 3773038, now seen corresponding path program 3 times [2021-11-09 10:36:35,856 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:36:35,856 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025508921] [2021-11-09 10:36:35,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:36:35,856 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:36:35,918 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 10:36:35,919 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2051109865] [2021-11-09 10:36:35,919 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-09 10:36:35,919 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:36:35,919 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:36:35,920 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:36:35,949 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2021-11-09 10:36:38,216 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-09 10:36:38,216 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 10:36:38,219 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-09 10:36:38,225 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:36:39,596 INFO L134 CoverageAnalysis]: Checked inductivity of 1578 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 1564 trivial. 0 not checked. [2021-11-09 10:36:39,597 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:36:39,597 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025508921] [2021-11-09 10:36:39,597 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 10:36:39,597 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2051109865] [2021-11-09 10:36:39,598 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2051109865] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:36:39,598 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:36:39,598 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-09 10:36:39,598 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956798038] [2021-11-09 10:36:39,599 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-09 10:36:39,599 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:36:39,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-09 10:36:39,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-09 10:36:39,601 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) [2021-11-09 10:36:39,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:36:39,830 INFO L93 Difference]: Finished difference Result 989 states and 1199 transitions. [2021-11-09 10:36:39,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-09 10:36:39,831 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 [2021-11-09 10:36:39,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:36:39,839 INFO L225 Difference]: With dead ends: 989 [2021-11-09 10:36:39,839 INFO L226 Difference]: Without dead ends: 988 [2021-11-09 10:36:39,842 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 [2021-11-09 10:36:39,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 988 states. [2021-11-09 10:36:39,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 988 to 920. [2021-11-09 10:36:39,942 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) [2021-11-09 10:36:39,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 920 states to 920 states and 1110 transitions. [2021-11-09 10:36:39,947 INFO L78 Accepts]: Start accepts. Automaton has 920 states and 1110 transitions. Word has length 485 [2021-11-09 10:36:39,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:36:39,948 INFO L470 AbstractCegarLoop]: Abstraction has 920 states and 1110 transitions. [2021-11-09 10:36:39,949 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) [2021-11-09 10:36:39,949 INFO L276 IsEmpty]: Start isEmpty. Operand 920 states and 1110 transitions. [2021-11-09 10:36:39,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 488 [2021-11-09 10:36:39,954 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:36:39,955 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] [2021-11-09 10:36:40,012 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2021-11-09 10:36:40,182 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2021-11-09 10:36:40,183 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)] === [2021-11-09 10:36:40,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:36:40,183 INFO L85 PathProgramCache]: Analyzing trace with hash 2106567617, now seen corresponding path program 1 times [2021-11-09 10:36:40,183 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:36:40,183 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135749985] [2021-11-09 10:36:40,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:36:40,184 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:36:40,237 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 10:36:40,238 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2070432220] [2021-11-09 10:36:40,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:36:40,238 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:36:40,239 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:36:40,240 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:36:40,264 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2021-11-09 10:36:42,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:36:42,884 INFO L263 TraceCheckSpWp]: Trace formula consists of 1378 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-09 10:36:42,896 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:36:44,684 INFO L134 CoverageAnalysis]: Checked inductivity of 1578 backedges. 0 proven. 1534 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2021-11-09 10:36:44,684 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:36:44,685 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135749985] [2021-11-09 10:36:44,685 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 10:36:44,685 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2070432220] [2021-11-09 10:36:44,685 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2070432220] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:36:44,685 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 10:36:44,685 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2021-11-09 10:36:44,685 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243887166] [2021-11-09 10:36:44,686 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-09 10:36:44,686 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:36:44,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-09 10:36:44,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2021-11-09 10:36:44,687 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) [2021-11-09 10:36:44,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:36:44,987 INFO L93 Difference]: Finished difference Result 1268 states and 1559 transitions. [2021-11-09 10:36:44,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-09 10:36:44,988 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 [2021-11-09 10:36:44,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:36:44,996 INFO L225 Difference]: With dead ends: 1268 [2021-11-09 10:36:44,996 INFO L226 Difference]: Without dead ends: 1109 [2021-11-09 10:36:44,999 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 494 GetRequests, 469 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=223, Invalid=479, Unknown=0, NotChecked=0, Total=702 [2021-11-09 10:36:45,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1109 states. [2021-11-09 10:36:45,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1109 to 1015. [2021-11-09 10:36:45,093 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) [2021-11-09 10:36:45,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1015 states to 1015 states and 1220 transitions. [2021-11-09 10:36:45,097 INFO L78 Accepts]: Start accepts. Automaton has 1015 states and 1220 transitions. Word has length 487 [2021-11-09 10:36:45,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:36:45,098 INFO L470 AbstractCegarLoop]: Abstraction has 1015 states and 1220 transitions. [2021-11-09 10:36:45,098 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) [2021-11-09 10:36:45,099 INFO L276 IsEmpty]: Start isEmpty. Operand 1015 states and 1220 transitions. [2021-11-09 10:36:45,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 543 [2021-11-09 10:36:45,104 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:36:45,104 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] [2021-11-09 10:36:45,140 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2021-11-09 10:36:45,309 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:36:45,310 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)] === [2021-11-09 10:36:45,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:36:45,310 INFO L85 PathProgramCache]: Analyzing trace with hash 1166678194, now seen corresponding path program 2 times [2021-11-09 10:36:45,310 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:36:45,311 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426877816] [2021-11-09 10:36:45,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:36:45,311 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:36:45,359 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 10:36:45,359 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [4755343] [2021-11-09 10:36:45,360 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-09 10:36:45,360 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:36:45,360 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:36:45,361 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:36:45,363 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2021-11-09 10:36:47,844 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-09 10:36:47,845 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 10:36:47,857 INFO L263 TraceCheckSpWp]: Trace formula consists of 1515 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-09 10:36:47,867 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:36:49,730 INFO L134 CoverageAnalysis]: Checked inductivity of 2017 backedges. 0 proven. 1973 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2021-11-09 10:36:49,730 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:36:49,730 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426877816] [2021-11-09 10:36:49,730 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 10:36:49,730 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [4755343] [2021-11-09 10:36:49,731 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [4755343] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:36:49,731 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 10:36:49,731 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2021-11-09 10:36:49,731 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609318306] [2021-11-09 10:36:49,732 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-09 10:36:49,733 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:36:49,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-09 10:36:49,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2021-11-09 10:36:49,734 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) [2021-11-09 10:36:50,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:36:50,091 INFO L93 Difference]: Finished difference Result 1269 states and 1560 transitions. [2021-11-09 10:36:50,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-09 10:36:50,092 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 [2021-11-09 10:36:50,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:36:50,100 INFO L225 Difference]: With dead ends: 1269 [2021-11-09 10:36:50,100 INFO L226 Difference]: Without dead ends: 1110 [2021-11-09 10:36:50,102 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 [2021-11-09 10:36:50,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1110 states. [2021-11-09 10:36:50,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1110 to 1110. [2021-11-09 10:36:50,214 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) [2021-11-09 10:36:50,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1110 states to 1110 states and 1330 transitions. [2021-11-09 10:36:50,218 INFO L78 Accepts]: Start accepts. Automaton has 1110 states and 1330 transitions. Word has length 542 [2021-11-09 10:36:50,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:36:50,219 INFO L470 AbstractCegarLoop]: Abstraction has 1110 states and 1330 transitions. [2021-11-09 10:36:50,220 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) [2021-11-09 10:36:50,220 INFO L276 IsEmpty]: Start isEmpty. Operand 1110 states and 1330 transitions. [2021-11-09 10:36:50,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 598 [2021-11-09 10:36:50,227 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:36:50,228 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] [2021-11-09 10:36:50,291 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2021-11-09 10:36:50,454 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:36:50,455 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)] === [2021-11-09 10:36:50,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:36:50,455 INFO L85 PathProgramCache]: Analyzing trace with hash -1687539551, now seen corresponding path program 3 times [2021-11-09 10:36:50,455 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:36:50,455 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482904760] [2021-11-09 10:36:50,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:36:50,456 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:36:50,510 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 10:36:50,510 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [449514782] [2021-11-09 10:36:50,510 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-09 10:36:50,510 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:36:50,511 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:36:50,512 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:36:50,532 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2021-11-09 10:36:53,089 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-09 10:36:53,089 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 10:36:53,092 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-09 10:36:53,101 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:36:54,671 INFO L134 CoverageAnalysis]: Checked inductivity of 2511 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 2496 trivial. 0 not checked. [2021-11-09 10:36:54,671 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:36:54,671 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482904760] [2021-11-09 10:36:54,671 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 10:36:54,671 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [449514782] [2021-11-09 10:36:54,672 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [449514782] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:36:54,672 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:36:54,672 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-09 10:36:54,672 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679333029] [2021-11-09 10:36:54,673 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-09 10:36:54,673 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:36:54,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-09 10:36:54,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-09 10:36:54,674 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) [2021-11-09 10:36:54,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:36:54,984 INFO L93 Difference]: Finished difference Result 1217 states and 1477 transitions. [2021-11-09 10:36:54,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-09 10:36:54,985 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 [2021-11-09 10:36:54,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:36:54,994 INFO L225 Difference]: With dead ends: 1217 [2021-11-09 10:36:54,994 INFO L226 Difference]: Without dead ends: 1216 [2021-11-09 10:36:54,995 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 [2021-11-09 10:36:54,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1216 states. [2021-11-09 10:36:55,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1216 to 1131. [2021-11-09 10:36:55,097 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) [2021-11-09 10:36:55,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1131 states to 1131 states and 1361 transitions. [2021-11-09 10:36:55,101 INFO L78 Accepts]: Start accepts. Automaton has 1131 states and 1361 transitions. Word has length 597 [2021-11-09 10:36:55,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:36:55,102 INFO L470 AbstractCegarLoop]: Abstraction has 1131 states and 1361 transitions. [2021-11-09 10:36:55,102 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) [2021-11-09 10:36:55,103 INFO L276 IsEmpty]: Start isEmpty. Operand 1131 states and 1361 transitions. [2021-11-09 10:36:55,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 601 [2021-11-09 10:36:55,110 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:36:55,110 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] [2021-11-09 10:36:55,165 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2021-11-09 10:36:55,334 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2021-11-09 10:36:55,335 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)] === [2021-11-09 10:36:55,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:36:55,335 INFO L85 PathProgramCache]: Analyzing trace with hash -1341521246, now seen corresponding path program 1 times [2021-11-09 10:36:55,335 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:36:55,336 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694966655] [2021-11-09 10:36:55,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:36:55,336 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:36:55,424 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 10:36:55,425 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1885323731] [2021-11-09 10:36:55,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:36:55,425 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:36:55,426 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:36:55,451 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:36:55,452 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2021-11-09 10:36:58,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:36:58,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 1658 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-09 10:36:58,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:37:00,576 INFO L134 CoverageAnalysis]: Checked inductivity of 2514 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 2483 trivial. 0 not checked. [2021-11-09 10:37:00,577 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:37:00,577 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694966655] [2021-11-09 10:37:00,577 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 10:37:00,578 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1885323731] [2021-11-09 10:37:00,578 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1885323731] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:37:00,578 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 10:37:00,578 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-11-09 10:37:00,579 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691541321] [2021-11-09 10:37:00,580 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-09 10:37:00,580 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:37:00,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-09 10:37:00,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-11-09 10:37:00,581 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) [2021-11-09 10:37:00,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:37:00,819 INFO L93 Difference]: Finished difference Result 1339 states and 1649 transitions. [2021-11-09 10:37:00,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-09 10:37:00,820 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 [2021-11-09 10:37:00,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:37:00,827 INFO L225 Difference]: With dead ends: 1339 [2021-11-09 10:37:00,827 INFO L226 Difference]: Without dead ends: 1338 [2021-11-09 10:37:00,828 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 [2021-11-09 10:37:00,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1338 states. [2021-11-09 10:37:00,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1338 to 1220. [2021-11-09 10:37:00,922 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) [2021-11-09 10:37:00,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1220 states to 1220 states and 1490 transitions. [2021-11-09 10:37:00,926 INFO L78 Accepts]: Start accepts. Automaton has 1220 states and 1490 transitions. Word has length 600 [2021-11-09 10:37:00,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:37:00,927 INFO L470 AbstractCegarLoop]: Abstraction has 1220 states and 1490 transitions. [2021-11-09 10:37:00,927 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) [2021-11-09 10:37:00,928 INFO L276 IsEmpty]: Start isEmpty. Operand 1220 states and 1490 transitions. [2021-11-09 10:37:00,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 609 [2021-11-09 10:37:00,935 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:37:00,936 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] [2021-11-09 10:37:00,999 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2021-11-09 10:37:01,150 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2021-11-09 10:37:01,151 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)] === [2021-11-09 10:37:01,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:37:01,152 INFO L85 PathProgramCache]: Analyzing trace with hash 1498941009, now seen corresponding path program 1 times [2021-11-09 10:37:01,152 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:37:01,152 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249639969] [2021-11-09 10:37:01,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:37:01,153 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:37:01,234 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 10:37:01,234 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [124353213] [2021-11-09 10:37:01,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:37:01,234 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:37:01,234 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:37:01,235 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:37:01,237 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2021-11-09 10:37:04,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:37:04,301 INFO L263 TraceCheckSpWp]: Trace formula consists of 1690 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-09 10:37:04,311 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:37:06,374 INFO L134 CoverageAnalysis]: Checked inductivity of 2537 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 2483 trivial. 0 not checked. [2021-11-09 10:37:06,374 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:37:06,375 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249639969] [2021-11-09 10:37:06,375 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 10:37:06,375 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [124353213] [2021-11-09 10:37:06,375 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [124353213] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:37:06,375 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 10:37:06,376 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-11-09 10:37:06,376 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204525929] [2021-11-09 10:37:06,376 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-09 10:37:06,377 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:37:06,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-09 10:37:06,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2021-11-09 10:37:06,377 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) [2021-11-09 10:37:06,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:37:06,645 INFO L93 Difference]: Finished difference Result 1434 states and 1784 transitions. [2021-11-09 10:37:06,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-09 10:37:06,646 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 [2021-11-09 10:37:06,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:37:06,654 INFO L225 Difference]: With dead ends: 1434 [2021-11-09 10:37:06,686 INFO L226 Difference]: Without dead ends: 1433 [2021-11-09 10:37:06,687 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 [2021-11-09 10:37:06,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1433 states. [2021-11-09 10:37:06,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1433 to 1315. [2021-11-09 10:37:06,814 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) [2021-11-09 10:37:06,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1315 states to 1315 states and 1625 transitions. [2021-11-09 10:37:06,818 INFO L78 Accepts]: Start accepts. Automaton has 1315 states and 1625 transitions. Word has length 608 [2021-11-09 10:37:06,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:37:06,820 INFO L470 AbstractCegarLoop]: Abstraction has 1315 states and 1625 transitions. [2021-11-09 10:37:06,820 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) [2021-11-09 10:37:06,820 INFO L276 IsEmpty]: Start isEmpty. Operand 1315 states and 1625 transitions. [2021-11-09 10:37:06,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 617 [2021-11-09 10:37:06,831 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:37:06,831 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] [2021-11-09 10:37:06,886 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2021-11-09 10:37:07,046 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2021-11-09 10:37:07,046 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)] === [2021-11-09 10:37:07,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:37:07,047 INFO L85 PathProgramCache]: Analyzing trace with hash -54859008, now seen corresponding path program 2 times [2021-11-09 10:37:07,047 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:37:07,048 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667313056] [2021-11-09 10:37:07,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:37:07,048 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:37:07,105 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 10:37:07,105 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1073817413] [2021-11-09 10:37:07,106 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-09 10:37:07,106 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:37:07,106 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:37:07,107 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:37:07,109 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2021-11-09 10:37:10,487 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-09 10:37:10,487 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 10:37:10,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 1722 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-09 10:37:10,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:37:12,605 INFO L134 CoverageAnalysis]: Checked inductivity of 2568 backedges. 0 proven. 85 refuted. 0 times theorem prover too weak. 2483 trivial. 0 not checked. [2021-11-09 10:37:12,606 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:37:12,606 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667313056] [2021-11-09 10:37:12,606 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 10:37:12,606 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1073817413] [2021-11-09 10:37:12,606 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1073817413] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:37:12,606 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 10:37:12,607 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2021-11-09 10:37:12,607 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210606929] [2021-11-09 10:37:12,607 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-09 10:37:12,608 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:37:12,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-09 10:37:12,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2021-11-09 10:37:12,609 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) [2021-11-09 10:37:12,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:37:12,946 INFO L93 Difference]: Finished difference Result 1529 states and 1919 transitions. [2021-11-09 10:37:12,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-09 10:37:12,946 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 [2021-11-09 10:37:12,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:37:12,955 INFO L225 Difference]: With dead ends: 1529 [2021-11-09 10:37:12,955 INFO L226 Difference]: Without dead ends: 1528 [2021-11-09 10:37:12,956 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 [2021-11-09 10:37:12,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1528 states. [2021-11-09 10:37:13,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1528 to 1410. [2021-11-09 10:37:13,054 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) [2021-11-09 10:37:13,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1410 states to 1410 states and 1760 transitions. [2021-11-09 10:37:13,058 INFO L78 Accepts]: Start accepts. Automaton has 1410 states and 1760 transitions. Word has length 616 [2021-11-09 10:37:13,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:37:13,059 INFO L470 AbstractCegarLoop]: Abstraction has 1410 states and 1760 transitions. [2021-11-09 10:37:13,059 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) [2021-11-09 10:37:13,060 INFO L276 IsEmpty]: Start isEmpty. Operand 1410 states and 1760 transitions. [2021-11-09 10:37:13,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 625 [2021-11-09 10:37:13,067 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:37:13,068 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] [2021-11-09 10:37:13,128 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2021-11-09 10:37:13,294 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2021-11-09 10:37:13,294 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)] === [2021-11-09 10:37:13,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:37:13,295 INFO L85 PathProgramCache]: Analyzing trace with hash 1807855791, now seen corresponding path program 3 times [2021-11-09 10:37:13,295 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:37:13,295 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772581567] [2021-11-09 10:37:13,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:37:13,296 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:37:13,345 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 10:37:13,345 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2051747161] [2021-11-09 10:37:13,345 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-09 10:37:13,345 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:37:13,346 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:37:13,347 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:37:13,347 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2021-11-09 10:37:16,579 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-09 10:37:16,579 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 10:37:16,582 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-09 10:37:16,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:37:18,063 INFO L134 CoverageAnalysis]: Checked inductivity of 2607 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 2572 trivial. 0 not checked. [2021-11-09 10:37:18,064 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:37:18,064 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772581567] [2021-11-09 10:37:18,064 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 10:37:18,064 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2051747161] [2021-11-09 10:37:18,064 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2051747161] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:37:18,064 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:37:18,065 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-09 10:37:18,065 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817549019] [2021-11-09 10:37:18,065 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-09 10:37:18,065 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:37:18,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-09 10:37:18,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-09 10:37:18,066 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) [2021-11-09 10:37:18,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:37:18,325 INFO L93 Difference]: Finished difference Result 1816 states and 2326 transitions. [2021-11-09 10:37:18,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-09 10:37:18,326 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 [2021-11-09 10:37:18,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:37:18,339 INFO L225 Difference]: With dead ends: 1816 [2021-11-09 10:37:18,339 INFO L226 Difference]: Without dead ends: 1815 [2021-11-09 10:37:18,340 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 [2021-11-09 10:37:18,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1815 states. [2021-11-09 10:37:18,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1815 to 1488. [2021-11-09 10:37:18,468 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) [2021-11-09 10:37:18,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1488 states to 1488 states and 1878 transitions. [2021-11-09 10:37:18,472 INFO L78 Accepts]: Start accepts. Automaton has 1488 states and 1878 transitions. Word has length 624 [2021-11-09 10:37:18,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:37:18,473 INFO L470 AbstractCegarLoop]: Abstraction has 1488 states and 1878 transitions. [2021-11-09 10:37:18,474 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) [2021-11-09 10:37:18,474 INFO L276 IsEmpty]: Start isEmpty. Operand 1488 states and 1878 transitions. [2021-11-09 10:37:18,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 627 [2021-11-09 10:37:18,485 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:37:18,485 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] [2021-11-09 10:37:18,550 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2021-11-09 10:37:18,710 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2021-11-09 10:37:18,711 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)] === [2021-11-09 10:37:18,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:37:18,711 INFO L85 PathProgramCache]: Analyzing trace with hash -924950983, now seen corresponding path program 1 times [2021-11-09 10:37:18,712 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:37:18,712 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638752598] [2021-11-09 10:37:18,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:37:18,712 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:37:18,786 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 10:37:18,787 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1710800216] [2021-11-09 10:37:18,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:37:18,787 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:37:18,788 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:37:18,789 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:37:18,790 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2021-11-09 10:37:22,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:37:22,726 INFO L263 TraceCheckSpWp]: Trace formula consists of 1755 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-09 10:37:22,735 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:37:24,757 INFO L134 CoverageAnalysis]: Checked inductivity of 2610 backedges. 0 proven. 127 refuted. 0 times theorem prover too weak. 2483 trivial. 0 not checked. [2021-11-09 10:37:24,757 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:37:24,757 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638752598] [2021-11-09 10:37:24,758 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 10:37:24,758 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1710800216] [2021-11-09 10:37:24,758 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1710800216] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:37:24,758 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 10:37:24,758 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2021-11-09 10:37:24,759 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096335107] [2021-11-09 10:37:24,759 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-09 10:37:24,759 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:37:24,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-09 10:37:24,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2021-11-09 10:37:24,760 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) [2021-11-09 10:37:25,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:37:25,236 INFO L93 Difference]: Finished difference Result 1751 states and 2241 transitions. [2021-11-09 10:37:25,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-09 10:37:25,237 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 [2021-11-09 10:37:25,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:37:25,245 INFO L225 Difference]: With dead ends: 1751 [2021-11-09 10:37:25,245 INFO L226 Difference]: Without dead ends: 1750 [2021-11-09 10:37:25,247 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 638 GetRequests, 611 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=279, Invalid=533, Unknown=0, NotChecked=0, Total=812 [2021-11-09 10:37:25,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1750 states. [2021-11-09 10:37:25,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1750 to 1604. [2021-11-09 10:37:25,346 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) [2021-11-09 10:37:25,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1604 states to 1604 states and 2044 transitions. [2021-11-09 10:37:25,350 INFO L78 Accepts]: Start accepts. Automaton has 1604 states and 2044 transitions. Word has length 626 [2021-11-09 10:37:25,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:37:25,351 INFO L470 AbstractCegarLoop]: Abstraction has 1604 states and 2044 transitions. [2021-11-09 10:37:25,351 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) [2021-11-09 10:37:25,351 INFO L276 IsEmpty]: Start isEmpty. Operand 1604 states and 2044 transitions. [2021-11-09 10:37:25,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 635 [2021-11-09 10:37:25,358 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:37:25,359 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] [2021-11-09 10:37:25,414 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2021-11-09 10:37:25,585 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2021-11-09 10:37:25,585 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)] === [2021-11-09 10:37:25,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:37:25,586 INFO L85 PathProgramCache]: Analyzing trace with hash 1850283304, now seen corresponding path program 2 times [2021-11-09 10:37:25,586 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:37:25,586 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936330388] [2021-11-09 10:37:25,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:37:25,586 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:37:25,650 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 10:37:25,650 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2050611323] [2021-11-09 10:37:25,650 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-09 10:37:25,651 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:37:25,651 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:37:25,656 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:37:25,662 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2021-11-09 10:37:29,761 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-09 10:37:29,762 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 10:37:29,777 INFO L263 TraceCheckSpWp]: Trace formula consists of 1787 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-09 10:37:29,783 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:37:31,822 INFO L134 CoverageAnalysis]: Checked inductivity of 2659 backedges. 0 proven. 176 refuted. 0 times theorem prover too weak. 2483 trivial. 0 not checked. [2021-11-09 10:37:31,822 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:37:31,822 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936330388] [2021-11-09 10:37:31,822 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 10:37:31,823 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2050611323] [2021-11-09 10:37:31,823 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2050611323] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:37:31,823 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 10:37:31,823 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2021-11-09 10:37:31,823 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426302053] [2021-11-09 10:37:31,824 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-09 10:37:31,824 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:37:31,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-09 10:37:31,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2021-11-09 10:37:31,824 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) [2021-11-09 10:37:32,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:37:32,314 INFO L93 Difference]: Finished difference Result 1867 states and 2407 transitions. [2021-11-09 10:37:32,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-09 10:37:32,314 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 [2021-11-09 10:37:32,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:37:32,326 INFO L225 Difference]: With dead ends: 1867 [2021-11-09 10:37:32,327 INFO L226 Difference]: Without dead ends: 1866 [2021-11-09 10:37:32,328 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 [2021-11-09 10:37:32,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1866 states. [2021-11-09 10:37:32,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1866 to 1720. [2021-11-09 10:37:32,447 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) [2021-11-09 10:37:32,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1720 states to 1720 states and 2210 transitions. [2021-11-09 10:37:32,453 INFO L78 Accepts]: Start accepts. Automaton has 1720 states and 2210 transitions. Word has length 634 [2021-11-09 10:37:32,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:37:32,454 INFO L470 AbstractCegarLoop]: Abstraction has 1720 states and 2210 transitions. [2021-11-09 10:37:32,454 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) [2021-11-09 10:37:32,455 INFO L276 IsEmpty]: Start isEmpty. Operand 1720 states and 2210 transitions. [2021-11-09 10:37:32,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 643 [2021-11-09 10:37:32,466 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:37:32,466 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] [2021-11-09 10:37:32,523 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2021-11-09 10:37:32,682 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2021-11-09 10:37:32,683 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)] === [2021-11-09 10:37:32,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:37:32,683 INFO L85 PathProgramCache]: Analyzing trace with hash 478244119, now seen corresponding path program 3 times [2021-11-09 10:37:32,683 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:37:32,683 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787629598] [2021-11-09 10:37:32,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:37:32,684 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:37:32,759 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 10:37:32,760 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1651036593] [2021-11-09 10:37:32,760 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-09 10:37:32,760 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:37:32,760 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:37:32,762 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:37:32,774 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b51caa8-fab5-494b-9c1d-fb875c3badbf/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process