./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 7e70badd Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a73407-7dca-4bb9-bce0-8d4053266167/bin/uautomizer-wIGwrQj20G/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a73407-7dca-4bb9-bce0-8d4053266167/bin/uautomizer-wIGwrQj20G/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a73407-7dca-4bb9-bce0-8d4053266167/bin/uautomizer-wIGwrQj20G/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a73407-7dca-4bb9-bce0-8d4053266167/bin/uautomizer-wIGwrQj20G/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_a1a73407-7dca-4bb9-bce0-8d4053266167/bin/uautomizer-wIGwrQj20G/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a73407-7dca-4bb9-bce0-8d4053266167/bin/uautomizer-wIGwrQj20G --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-7e70bad [2021-11-23 12:45:08,462 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 12:45:08,465 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 12:45:08,518 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 12:45:08,519 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 12:45:08,524 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 12:45:08,527 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 12:45:08,532 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 12:45:08,536 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 12:45:08,543 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 12:45:08,545 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 12:45:08,547 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 12:45:08,548 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 12:45:08,551 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 12:45:08,554 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 12:45:08,559 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 12:45:08,562 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 12:45:08,564 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 12:45:08,567 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 12:45:08,577 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 12:45:08,580 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 12:45:08,582 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 12:45:08,587 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 12:45:08,588 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 12:45:08,600 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 12:45:08,601 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 12:45:08,602 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 12:45:08,604 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 12:45:08,605 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 12:45:08,607 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 12:45:08,608 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 12:45:08,609 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 12:45:08,612 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 12:45:08,614 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 12:45:08,616 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 12:45:08,617 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 12:45:08,618 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 12:45:08,618 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 12:45:08,619 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 12:45:08,620 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 12:45:08,621 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 12:45:08,623 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a73407-7dca-4bb9-bce0-8d4053266167/bin/uautomizer-wIGwrQj20G/config/svcomp-Overflow-32bit-Automizer_Default.epf [2021-11-23 12:45:08,677 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 12:45:08,679 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 12:45:08,680 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 12:45:08,681 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 12:45:08,683 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 12:45:08,683 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 12:45:08,683 INFO L138 SettingsManager]: * Use SBE=true [2021-11-23 12:45:08,684 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 12:45:08,684 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 12:45:08,684 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-23 12:45:08,686 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 12:45:08,686 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 12:45:08,686 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 12:45:08,687 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 12:45:08,687 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 12:45:08,687 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 12:45:08,688 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-11-23 12:45:08,688 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 12:45:08,688 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 12:45:08,688 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 12:45:08,689 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 12:45:08,689 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 12:45:08,690 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 12:45:08,690 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 12:45:08,690 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 12:45:08,690 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 12:45:08,691 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 12:45:08,691 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 12:45:08,691 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-23 12:45:08,692 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 12:45:08,692 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 12:45:08,692 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 12:45:08,693 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_a1a73407-7dca-4bb9-bce0-8d4053266167/bin/uautomizer-wIGwrQj20G/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a73407-7dca-4bb9-bce0-8d4053266167/bin/uautomizer-wIGwrQj20G Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7f552e336cb6eb3ea16ba25a84411e1d0c8dcfaa2b088c21df87ffefed1a84a7 [2021-11-23 12:45:09,035 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 12:45:09,062 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 12:45:09,066 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 12:45:09,067 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 12:45:09,069 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 12:45:09,070 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a73407-7dca-4bb9-bce0-8d4053266167/bin/uautomizer-wIGwrQj20G/../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test1-2.i [2021-11-23 12:45:09,153 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a73407-7dca-4bb9-bce0-8d4053266167/bin/uautomizer-wIGwrQj20G/data/188c623fe/535d7400d29c4ca6a267ccb77ea127e7/FLAGee5f4f2ee [2021-11-23 12:45:09,888 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 12:45:09,889 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a73407-7dca-4bb9-bce0-8d4053266167/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test1-2.i [2021-11-23 12:45:09,910 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a73407-7dca-4bb9-bce0-8d4053266167/bin/uautomizer-wIGwrQj20G/data/188c623fe/535d7400d29c4ca6a267ccb77ea127e7/FLAGee5f4f2ee [2021-11-23 12:45:10,058 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a73407-7dca-4bb9-bce0-8d4053266167/bin/uautomizer-wIGwrQj20G/data/188c623fe/535d7400d29c4ca6a267ccb77ea127e7 [2021-11-23 12:45:10,061 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 12:45:10,063 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 12:45:10,075 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 12:45:10,075 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 12:45:10,078 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 12:45:10,079 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 12:45:10" (1/1) ... [2021-11-23 12:45:10,081 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@237317ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:45:10, skipping insertion in model container [2021-11-23 12:45:10,081 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 12:45:10" (1/1) ... [2021-11-23 12:45:10,094 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 12:45:10,194 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 12:45:10,718 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a73407-7dca-4bb9-bce0-8d4053266167/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test1-2.i[33021,33034] [2021-11-23 12:45:10,865 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 12:45:10,894 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 12:45:10,951 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a73407-7dca-4bb9-bce0-8d4053266167/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test1-2.i[33021,33034] [2021-11-23 12:45:11,068 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 12:45:11,122 INFO L208 MainTranslator]: Completed translation [2021-11-23 12:45:11,123 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:45:11 WrapperNode [2021-11-23 12:45:11,123 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 12:45:11,124 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 12:45:11,124 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 12:45:11,124 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 12:45:11,133 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:45:11" (1/1) ... [2021-11-23 12:45:11,168 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:45:11" (1/1) ... [2021-11-23 12:45:11,268 INFO L137 Inliner]: procedures = 177, calls = 237, calls flagged for inlining = 16, calls inlined = 16, statements flattened = 827 [2021-11-23 12:45:11,269 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 12:45:11,270 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 12:45:11,270 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 12:45:11,270 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 12:45:11,311 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:45:11" (1/1) ... [2021-11-23 12:45:11,312 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:45:11" (1/1) ... [2021-11-23 12:45:11,344 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:45:11" (1/1) ... [2021-11-23 12:45:11,344 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:45:11" (1/1) ... [2021-11-23 12:45:11,450 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:45:11" (1/1) ... [2021-11-23 12:45:11,469 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:45:11" (1/1) ... [2021-11-23 12:45:11,485 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:45:11" (1/1) ... [2021-11-23 12:45:11,510 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 12:45:11,520 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 12:45:11,521 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 12:45:11,522 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 12:45:11,524 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:45:11" (1/1) ... [2021-11-23 12:45:11,534 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 12:45:11,549 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a73407-7dca-4bb9-bce0-8d4053266167/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:45:11,565 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a73407-7dca-4bb9-bce0-8d4053266167/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 12:45:11,590 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a73407-7dca-4bb9-bce0-8d4053266167/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 12:45:11,645 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 12:45:11,646 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 12:45:11,646 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 12:45:11,646 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 12:45:11,647 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 12:45:11,647 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 12:45:11,647 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 12:45:11,647 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 12:45:11,647 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 12:45:11,648 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 12:45:11,648 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 12:45:11,986 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 12:45:11,999 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 12:45:13,464 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 12:45:13,475 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 12:45:13,475 INFO L301 CfgBuilder]: Removed 40 assume(true) statements. [2021-11-23 12:45:13,478 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 12:45:13 BoogieIcfgContainer [2021-11-23 12:45:13,478 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 12:45:13,481 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 12:45:13,481 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 12:45:13,486 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 12:45:13,486 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 12:45:10" (1/3) ... [2021-11-23 12:45:13,487 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bc70e1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 12:45:13, skipping insertion in model container [2021-11-23 12:45:13,488 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:45:11" (2/3) ... [2021-11-23 12:45:13,488 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bc70e1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 12:45:13, skipping insertion in model container [2021-11-23 12:45:13,488 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 12:45:13" (3/3) ... [2021-11-23 12:45:13,490 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_SAX_test1-2.i [2021-11-23 12:45:13,497 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 12:45:13,498 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-11-23 12:45:13,590 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 12:45:13,599 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 [2021-11-23 12:45:13,599 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-11-23 12:45:13,631 INFO L276 IsEmpty]: Start isEmpty. Operand has 169 states, 162 states have (on average 1.6790123456790123) internal successors, (272), 168 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:45:13,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-23 12:45:13,638 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:45:13,639 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-23 12:45:13,639 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)] === [2021-11-23 12:45:13,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:45:13,645 INFO L85 PathProgramCache]: Analyzing trace with hash 889985515, now seen corresponding path program 1 times [2021-11-23 12:45:13,657 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:45:13,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476877394] [2021-11-23 12:45:13,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:45:13,660 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:45:13,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:45:13,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:45:13,907 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:45:13,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476877394] [2021-11-23 12:45:13,910 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476877394] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:45:13,910 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:45:13,910 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 12:45:13,913 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198396860] [2021-11-23 12:45:13,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:45:13,920 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 12:45:13,920 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:45:13,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 12:45:13,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:45:13,974 INFO L87 Difference]: Start difference. First operand has 169 states, 162 states have (on average 1.6790123456790123) internal successors, (272), 168 states have internal predecessors, (272), 0 states have call successors, (0), 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) [2021-11-23 12:45:14,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:45:14,132 INFO L93 Difference]: Finished difference Result 428 states and 699 transitions. [2021-11-23 12:45:14,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 12:45:14,137 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 [2021-11-23 12:45:14,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:45:14,157 INFO L225 Difference]: With dead ends: 428 [2021-11-23 12:45:14,158 INFO L226 Difference]: Without dead ends: 228 [2021-11-23 12:45:14,164 INFO L932 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 [2021-11-23 12:45:14,171 INFO L933 BasicCegarLoop]: 212 mSDtfsCounter, 119 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 420 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:45:14,172 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [119 Valid, 420 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:45:14,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2021-11-23 12:45:14,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 139. [2021-11-23 12:45:14,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 134 states have (on average 1.3208955223880596) internal successors, (177), 138 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:45:14,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 177 transitions. [2021-11-23 12:45:14,246 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 177 transitions. Word has length 6 [2021-11-23 12:45:14,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:45:14,246 INFO L470 AbstractCegarLoop]: Abstraction has 139 states and 177 transitions. [2021-11-23 12:45:14,247 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) [2021-11-23 12:45:14,247 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 177 transitions. [2021-11-23 12:45:14,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-23 12:45:14,250 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:45:14,250 INFO L514 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] [2021-11-23 12:45:14,251 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 12:45:14,251 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)] === [2021-11-23 12:45:14,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:45:14,252 INFO L85 PathProgramCache]: Analyzing trace with hash 703481080, now seen corresponding path program 1 times [2021-11-23 12:45:14,252 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:45:14,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076080823] [2021-11-23 12:45:14,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:45:14,253 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:45:14,285 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 12:45:14,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [323038990] [2021-11-23 12:45:14,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:45:14,287 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:45:14,287 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a73407-7dca-4bb9-bce0-8d4053266167/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:45:14,296 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a73407-7dca-4bb9-bce0-8d4053266167/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 12:45:14,319 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a73407-7dca-4bb9-bce0-8d4053266167/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 12:45:14,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:45:14,513 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 12:45:14,523 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:45:14,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:45:14,768 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 12:45:14,768 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:45:14,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076080823] [2021-11-23 12:45:14,769 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 12:45:14,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [323038990] [2021-11-23 12:45:14,774 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [323038990] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:45:14,777 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:45:14,777 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 12:45:14,779 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877246821] [2021-11-23 12:45:14,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:45:14,781 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 12:45:14,781 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:45:14,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 12:45:14,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:45:14,785 INFO L87 Difference]: Start difference. First operand 139 states and 177 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) [2021-11-23 12:45:14,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:45:14,908 INFO L93 Difference]: Finished difference Result 293 states and 379 transitions. [2021-11-23 12:45:14,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 12:45:14,909 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 [2021-11-23 12:45:14,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:45:14,911 INFO L225 Difference]: With dead ends: 293 [2021-11-23 12:45:14,911 INFO L226 Difference]: Without dead ends: 160 [2021-11-23 12:45:14,912 INFO L932 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 [2021-11-23 12:45:14,914 INFO L933 BasicCegarLoop]: 153 mSDtfsCounter, 9 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 291 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 12:45:14,915 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 291 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 12:45:14,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2021-11-23 12:45:14,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 159. [2021-11-23 12:45:14,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 154 states have (on average 1.2792207792207793) internal successors, (197), 158 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:45:14,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 197 transitions. [2021-11-23 12:45:14,931 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 197 transitions. Word has length 56 [2021-11-23 12:45:14,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:45:14,932 INFO L470 AbstractCegarLoop]: Abstraction has 159 states and 197 transitions. [2021-11-23 12:45:14,932 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) [2021-11-23 12:45:14,933 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 197 transitions. [2021-11-23 12:45:14,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-23 12:45:14,935 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:45:14,945 INFO L514 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] [2021-11-23 12:45:14,994 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a73407-7dca-4bb9-bce0-8d4053266167/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-23 12:45:15,160 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a73407-7dca-4bb9-bce0-8d4053266167/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:45:15,161 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)] === [2021-11-23 12:45:15,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:45:15,162 INFO L85 PathProgramCache]: Analyzing trace with hash 680848826, now seen corresponding path program 1 times [2021-11-23 12:45:15,162 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:45:15,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952265700] [2021-11-23 12:45:15,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:45:15,163 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:45:15,207 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 12:45:15,211 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1165423599] [2021-11-23 12:45:15,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:45:15,211 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:45:15,212 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a73407-7dca-4bb9-bce0-8d4053266167/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:45:15,232 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a73407-7dca-4bb9-bce0-8d4053266167/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 12:45:15,255 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a73407-7dca-4bb9-bce0-8d4053266167/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-23 12:45:15,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:45:15,457 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 12:45:15,461 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:45:15,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:45:15,617 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 12:45:15,617 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:45:15,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952265700] [2021-11-23 12:45:15,621 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 12:45:15,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1165423599] [2021-11-23 12:45:15,622 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1165423599] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:45:15,623 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:45:15,623 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 12:45:15,623 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806995576] [2021-11-23 12:45:15,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:45:15,624 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 12:45:15,624 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:45:15,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 12:45:15,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 12:45:15,626 INFO L87 Difference]: Start difference. First operand 159 states and 197 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) [2021-11-23 12:45:15,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:45:15,756 INFO L93 Difference]: Finished difference Result 303 states and 379 transitions. [2021-11-23 12:45:15,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 12:45:15,757 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 [2021-11-23 12:45:15,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:45:15,761 INFO L225 Difference]: With dead ends: 303 [2021-11-23 12:45:15,762 INFO L226 Difference]: Without dead ends: 150 [2021-11-23 12:45:15,766 INFO L932 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 [2021-11-23 12:45:15,771 INFO L933 BasicCegarLoop]: 154 mSDtfsCounter, 161 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 305 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 12:45:15,773 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [161 Valid, 305 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 12:45:15,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2021-11-23 12:45:15,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 145. [2021-11-23 12:45:15,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 140 states have (on average 1.2571428571428571) internal successors, (176), 144 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:45:15,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 176 transitions. [2021-11-23 12:45:15,807 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 176 transitions. Word has length 56 [2021-11-23 12:45:15,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:45:15,808 INFO L470 AbstractCegarLoop]: Abstraction has 145 states and 176 transitions. [2021-11-23 12:45:15,808 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) [2021-11-23 12:45:15,808 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 176 transitions. [2021-11-23 12:45:15,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-23 12:45:15,815 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:45:15,818 INFO L514 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] [2021-11-23 12:45:15,865 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a73407-7dca-4bb9-bce0-8d4053266167/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-23 12:45:16,031 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a73407-7dca-4bb9-bce0-8d4053266167/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:45:16,032 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)] === [2021-11-23 12:45:16,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:45:16,033 INFO L85 PathProgramCache]: Analyzing trace with hash -1567550038, now seen corresponding path program 1 times [2021-11-23 12:45:16,033 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:45:16,033 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006067938] [2021-11-23 12:45:16,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:45:16,034 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:45:16,055 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 12:45:16,055 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [141482550] [2021-11-23 12:45:16,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:45:16,055 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:45:16,056 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a73407-7dca-4bb9-bce0-8d4053266167/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:45:16,057 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a73407-7dca-4bb9-bce0-8d4053266167/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 12:45:16,079 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a73407-7dca-4bb9-bce0-8d4053266167/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-23 12:45:16,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:45:16,235 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-23 12:45:16,239 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:45:16,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:45:16,381 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 12:45:16,381 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:45:16,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006067938] [2021-11-23 12:45:16,382 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 12:45:16,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [141482550] [2021-11-23 12:45:16,382 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [141482550] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:45:16,382 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:45:16,383 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 12:45:16,383 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458845122] [2021-11-23 12:45:16,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:45:16,384 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 12:45:16,384 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:45:16,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 12:45:16,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 12:45:16,385 INFO L87 Difference]: Start difference. First operand 145 states and 176 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) [2021-11-23 12:45:16,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:45:16,544 INFO L93 Difference]: Finished difference Result 425 states and 518 transitions. [2021-11-23 12:45:16,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 12:45:16,545 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 [2021-11-23 12:45:16,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:45:16,549 INFO L225 Difference]: With dead ends: 425 [2021-11-23 12:45:16,549 INFO L226 Difference]: Without dead ends: 286 [2021-11-23 12:45:16,551 INFO L932 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 [2021-11-23 12:45:16,556 INFO L933 BasicCegarLoop]: 157 mSDtfsCounter, 150 mSDsluCounter, 427 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 584 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 12:45:16,558 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [150 Valid, 584 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 12:45:16,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2021-11-23 12:45:16,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 168. [2021-11-23 12:45:16,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 163 states have (on average 1.2331288343558282) internal successors, (201), 167 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:45:16,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 201 transitions. [2021-11-23 12:45:16,594 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 201 transitions. Word has length 56 [2021-11-23 12:45:16,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:45:16,595 INFO L470 AbstractCegarLoop]: Abstraction has 168 states and 201 transitions. [2021-11-23 12:45:16,597 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) [2021-11-23 12:45:16,597 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 201 transitions. [2021-11-23 12:45:16,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-23 12:45:16,607 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:45:16,607 INFO L514 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] [2021-11-23 12:45:16,654 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a73407-7dca-4bb9-bce0-8d4053266167/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-23 12:45:16,823 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a73407-7dca-4bb9-bce0-8d4053266167/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:45:16,824 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)] === [2021-11-23 12:45:16,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:45:16,825 INFO L85 PathProgramCache]: Analyzing trace with hash 2145970276, now seen corresponding path program 1 times [2021-11-23 12:45:16,825 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:45:16,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000282597] [2021-11-23 12:45:16,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:45:16,826 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:45:16,842 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 12:45:16,843 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [590435508] [2021-11-23 12:45:16,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:45:16,843 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:45:16,844 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a73407-7dca-4bb9-bce0-8d4053266167/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:45:16,845 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a73407-7dca-4bb9-bce0-8d4053266167/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 12:45:16,855 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a73407-7dca-4bb9-bce0-8d4053266167/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-23 12:45:17,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:45:17,034 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-23 12:45:17,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:45:17,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:45:17,170 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 12:45:17,170 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:45:17,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000282597] [2021-11-23 12:45:17,171 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 12:45:17,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [590435508] [2021-11-23 12:45:17,171 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [590435508] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:45:17,172 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:45:17,172 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 12:45:17,172 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752106573] [2021-11-23 12:45:17,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:45:17,173 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 12:45:17,174 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:45:17,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 12:45:17,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 12:45:17,175 INFO L87 Difference]: Start difference. First operand 168 states and 201 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) [2021-11-23 12:45:17,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:45:17,252 INFO L93 Difference]: Finished difference Result 302 states and 363 transitions. [2021-11-23 12:45:17,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 12:45:17,254 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 [2021-11-23 12:45:17,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:45:17,258 INFO L225 Difference]: With dead ends: 302 [2021-11-23 12:45:17,258 INFO L226 Difference]: Without dead ends: 140 [2021-11-23 12:45:17,259 INFO L932 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 [2021-11-23 12:45:17,260 INFO L933 BasicCegarLoop]: 150 mSDtfsCounter, 141 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 299 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 12:45:17,261 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [141 Valid, 299 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 12:45:17,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2021-11-23 12:45:17,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 136. [2021-11-23 12:45:17,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 131 states have (on average 1.2366412213740459) internal successors, (162), 135 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:45:17,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 162 transitions. [2021-11-23 12:45:17,274 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 162 transitions. Word has length 56 [2021-11-23 12:45:17,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:45:17,274 INFO L470 AbstractCegarLoop]: Abstraction has 136 states and 162 transitions. [2021-11-23 12:45:17,275 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) [2021-11-23 12:45:17,275 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 162 transitions. [2021-11-23 12:45:17,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-23 12:45:17,282 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:45:17,283 INFO L514 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] [2021-11-23 12:45:17,328 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a73407-7dca-4bb9-bce0-8d4053266167/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-23 12:45:17,507 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a73407-7dca-4bb9-bce0-8d4053266167/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:45:17,507 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)] === [2021-11-23 12:45:17,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:45:17,508 INFO L85 PathProgramCache]: Analyzing trace with hash -1590182292, now seen corresponding path program 1 times [2021-11-23 12:45:17,508 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:45:17,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67671560] [2021-11-23 12:45:17,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:45:17,509 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:45:17,527 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 12:45:17,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [97187579] [2021-11-23 12:45:17,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:45:17,528 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:45:17,528 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a73407-7dca-4bb9-bce0-8d4053266167/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:45:17,529 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a73407-7dca-4bb9-bce0-8d4053266167/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 12:45:17,539 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a73407-7dca-4bb9-bce0-8d4053266167/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-23 12:45:17,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:45:17,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 12:45:17,706 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:45:17,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:45:17,866 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 12:45:17,867 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:45:17,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67671560] [2021-11-23 12:45:17,867 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 12:45:17,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [97187579] [2021-11-23 12:45:17,868 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [97187579] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:45:17,868 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:45:17,868 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 12:45:17,868 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813271705] [2021-11-23 12:45:17,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:45:17,869 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 12:45:17,869 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:45:17,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 12:45:17,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 12:45:17,870 INFO L87 Difference]: Start difference. First operand 136 states and 162 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) [2021-11-23 12:45:17,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:45:17,918 INFO L93 Difference]: Finished difference Result 222 states and 263 transitions. [2021-11-23 12:45:17,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 12:45:17,919 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 [2021-11-23 12:45:17,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:45:17,921 INFO L225 Difference]: With dead ends: 222 [2021-11-23 12:45:17,921 INFO L226 Difference]: Without dead ends: 221 [2021-11-23 12:45:17,922 INFO L932 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 [2021-11-23 12:45:17,923 INFO L933 BasicCegarLoop]: 150 mSDtfsCounter, 53 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 447 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:45:17,923 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [53 Valid, 447 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:45:17,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2021-11-23 12:45:17,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 219. [2021-11-23 12:45:17,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 214 states have (on average 1.2149532710280373) internal successors, (260), 218 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:45:17,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 260 transitions. [2021-11-23 12:45:17,934 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 260 transitions. Word has length 56 [2021-11-23 12:45:17,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:45:17,934 INFO L470 AbstractCegarLoop]: Abstraction has 219 states and 260 transitions. [2021-11-23 12:45:17,935 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) [2021-11-23 12:45:17,935 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 260 transitions. [2021-11-23 12:45:17,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-23 12:45:17,936 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:45:17,936 INFO L514 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] [2021-11-23 12:45:17,988 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a73407-7dca-4bb9-bce0-8d4053266167/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-23 12:45:18,155 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a73407-7dca-4bb9-bce0-8d4053266167/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:45:18,156 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)] === [2021-11-23 12:45:18,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:45:18,157 INFO L85 PathProgramCache]: Analyzing trace with hash -2051010371, now seen corresponding path program 1 times [2021-11-23 12:45:18,157 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:45:18,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517156740] [2021-11-23 12:45:18,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:45:18,157 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:45:18,173 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 12:45:18,173 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1412006509] [2021-11-23 12:45:18,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:45:18,173 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:45:18,174 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a73407-7dca-4bb9-bce0-8d4053266167/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:45:18,175 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a73407-7dca-4bb9-bce0-8d4053266167/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 12:45:18,184 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a73407-7dca-4bb9-bce0-8d4053266167/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-23 12:45:18,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:45:18,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 12:45:18,331 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:45:18,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:45:18,501 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 12:45:18,501 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:45:18,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517156740] [2021-11-23 12:45:18,501 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 12:45:18,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1412006509] [2021-11-23 12:45:18,502 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1412006509] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:45:18,502 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:45:18,502 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 12:45:18,502 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155062518] [2021-11-23 12:45:18,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:45:18,503 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 12:45:18,503 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:45:18,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 12:45:18,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 12:45:18,504 INFO L87 Difference]: Start difference. First operand 219 states and 260 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) [2021-11-23 12:45:18,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:45:18,544 INFO L93 Difference]: Finished difference Result 219 states and 260 transitions. [2021-11-23 12:45:18,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 12:45:18,545 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 [2021-11-23 12:45:18,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:45:18,547 INFO L225 Difference]: With dead ends: 219 [2021-11-23 12:45:18,547 INFO L226 Difference]: Without dead ends: 218 [2021-11-23 12:45:18,548 INFO L932 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 [2021-11-23 12:45:18,549 INFO L933 BasicCegarLoop]: 147 mSDtfsCounter, 103 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 294 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:45:18,549 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [103 Valid, 294 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:45:18,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2021-11-23 12:45:18,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2021-11-23 12:45:18,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 214 states have (on average 1.2102803738317758) internal successors, (259), 217 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) [2021-11-23 12:45:18,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 259 transitions. [2021-11-23 12:45:18,561 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 259 transitions. Word has length 57 [2021-11-23 12:45:18,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:45:18,562 INFO L470 AbstractCegarLoop]: Abstraction has 218 states and 259 transitions. [2021-11-23 12:45:18,562 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) [2021-11-23 12:45:18,562 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 259 transitions. [2021-11-23 12:45:18,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-23 12:45:18,563 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:45:18,563 INFO L514 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] [2021-11-23 12:45:18,610 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a73407-7dca-4bb9-bce0-8d4053266167/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-23 12:45:18,784 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a73407-7dca-4bb9-bce0-8d4053266167/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:45:18,785 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)] === [2021-11-23 12:45:18,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:45:18,785 INFO L85 PathProgramCache]: Analyzing trace with hash -1850265242, now seen corresponding path program 1 times [2021-11-23 12:45:18,785 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:45:18,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608881059] [2021-11-23 12:45:18,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:45:18,786 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:45:18,808 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 12:45:18,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1916287914] [2021-11-23 12:45:18,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:45:18,809 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:45:18,810 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a73407-7dca-4bb9-bce0-8d4053266167/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:45:18,811 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a73407-7dca-4bb9-bce0-8d4053266167/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 12:45:18,827 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a73407-7dca-4bb9-bce0-8d4053266167/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-23 12:45:18,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:45:18,994 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-23 12:45:18,996 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:45:19,216 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:45:19,216 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:45:19,460 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:45:19,460 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:45:19,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608881059] [2021-11-23 12:45:19,461 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 12:45:19,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1916287914] [2021-11-23 12:45:19,461 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1916287914] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 12:45:19,461 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-23 12:45:19,462 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-11-23 12:45:19,462 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550619777] [2021-11-23 12:45:19,462 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-23 12:45:19,463 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 12:45:19,463 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:45:19,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 12:45:19,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-11-23 12:45:19,464 INFO L87 Difference]: Start difference. First operand 218 states and 259 transitions. Second operand has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:45:19,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:45:19,574 INFO L93 Difference]: Finished difference Result 348 states and 417 transitions. [2021-11-23 12:45:19,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 12:45:19,575 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2021-11-23 12:45:19,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:45:19,578 INFO L225 Difference]: With dead ends: 348 [2021-11-23 12:45:19,578 INFO L226 Difference]: Without dead ends: 308 [2021-11-23 12:45:19,579 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2021-11-23 12:45:19,580 INFO L933 BasicCegarLoop]: 149 mSDtfsCounter, 461 mSDsluCounter, 540 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 461 SdHoareTripleChecker+Valid, 689 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 12:45:19,580 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [461 Valid, 689 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 12:45:19,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2021-11-23 12:45:19,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 308. [2021-11-23 12:45:19,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 304 states have (on average 1.200657894736842) internal successors, (365), 307 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:45:19,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 365 transitions. [2021-11-23 12:45:19,597 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 365 transitions. Word has length 61 [2021-11-23 12:45:19,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:45:19,597 INFO L470 AbstractCegarLoop]: Abstraction has 308 states and 365 transitions. [2021-11-23 12:45:19,598 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:45:19,598 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 365 transitions. [2021-11-23 12:45:19,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-23 12:45:19,599 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:45:19,599 INFO L514 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] [2021-11-23 12:45:19,642 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a73407-7dca-4bb9-bce0-8d4053266167/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-23 12:45:19,819 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a73407-7dca-4bb9-bce0-8d4053266167/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:45:19,820 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)] === [2021-11-23 12:45:19,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:45:19,821 INFO L85 PathProgramCache]: Analyzing trace with hash -1850587164, now seen corresponding path program 1 times [2021-11-23 12:45:19,821 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:45:19,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889256330] [2021-11-23 12:45:19,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:45:19,821 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:45:19,835 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 12:45:19,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1695254508] [2021-11-23 12:45:19,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:45:19,836 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:45:19,836 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a73407-7dca-4bb9-bce0-8d4053266167/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:45:19,837 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a73407-7dca-4bb9-bce0-8d4053266167/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 12:45:19,858 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a73407-7dca-4bb9-bce0-8d4053266167/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-23 12:45:19,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:45:19,998 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 12:45:20,001 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:45:20,325 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:45:20,325 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 12:45:20,326 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:45:20,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889256330] [2021-11-23 12:45:20,326 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 12:45:20,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1695254508] [2021-11-23 12:45:20,327 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1695254508] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:45:20,327 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:45:20,327 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 12:45:20,328 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522337825] [2021-11-23 12:45:20,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:45:20,328 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 12:45:20,329 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:45:20,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 12:45:20,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:45:20,330 INFO L87 Difference]: Start difference. First operand 308 states and 365 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) [2021-11-23 12:45:20,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:45:20,388 INFO L93 Difference]: Finished difference Result 565 states and 676 transitions. [2021-11-23 12:45:20,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 12:45:20,389 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 [2021-11-23 12:45:20,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:45:20,392 INFO L225 Difference]: With dead ends: 565 [2021-11-23 12:45:20,392 INFO L226 Difference]: Without dead ends: 306 [2021-11-23 12:45:20,393 INFO L932 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 [2021-11-23 12:45:20,394 INFO L933 BasicCegarLoop]: 156 mSDtfsCounter, 11 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 295 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:45:20,394 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 295 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:45:20,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2021-11-23 12:45:20,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 306. [2021-11-23 12:45:20,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 306 states, 302 states have (on average 1.1986754966887416) internal successors, (362), 305 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:45:20,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 362 transitions. [2021-11-23 12:45:20,411 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 362 transitions. Word has length 61 [2021-11-23 12:45:20,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:45:20,411 INFO L470 AbstractCegarLoop]: Abstraction has 306 states and 362 transitions. [2021-11-23 12:45:20,411 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) [2021-11-23 12:45:20,412 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 362 transitions. [2021-11-23 12:45:20,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-23 12:45:20,412 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:45:20,413 INFO L514 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] [2021-11-23 12:45:20,457 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a73407-7dca-4bb9-bce0-8d4053266167/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-23 12:45:20,639 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a73407-7dca-4bb9-bce0-8d4053266167/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:45:20,640 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)] === [2021-11-23 12:45:20,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:45:20,640 INFO L85 PathProgramCache]: Analyzing trace with hash 182245876, now seen corresponding path program 1 times [2021-11-23 12:45:20,640 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:45:20,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268863888] [2021-11-23 12:45:20,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:45:20,641 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:45:20,655 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 12:45:20,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1506396849] [2021-11-23 12:45:20,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:45:20,656 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:45:20,656 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a73407-7dca-4bb9-bce0-8d4053266167/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:45:20,671 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a73407-7dca-4bb9-bce0-8d4053266167/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 12:45:20,687 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a73407-7dca-4bb9-bce0-8d4053266167/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-23 12:45:21,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:45:21,060 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-23 12:45:21,062 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:45:21,206 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:45:21,206 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 12:45:21,206 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:45:21,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268863888] [2021-11-23 12:45:21,207 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 12:45:21,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1506396849] [2021-11-23 12:45:21,207 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1506396849] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:45:21,207 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:45:21,208 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 12:45:21,228 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599412240] [2021-11-23 12:45:21,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:45:21,231 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 12:45:21,231 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:45:21,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 12:45:21,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:45:21,232 INFO L87 Difference]: Start difference. First operand 306 states and 362 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) [2021-11-23 12:45:21,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:45:21,273 INFO L93 Difference]: Finished difference Result 569 states and 682 transitions. [2021-11-23 12:45:21,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 12:45:21,274 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 [2021-11-23 12:45:21,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:45:21,277 INFO L225 Difference]: With dead ends: 569 [2021-11-23 12:45:21,277 INFO L226 Difference]: Without dead ends: 309 [2021-11-23 12:45:21,278 INFO L932 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 [2021-11-23 12:45:21,279 INFO L933 BasicCegarLoop]: 156 mSDtfsCounter, 0 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 304 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:45:21,280 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 304 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:45:21,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2021-11-23 12:45:21,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 309. [2021-11-23 12:45:21,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 305 states have (on average 1.1967213114754098) internal successors, (365), 308 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:45:21,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 365 transitions. [2021-11-23 12:45:21,297 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 365 transitions. Word has length 68 [2021-11-23 12:45:21,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:45:21,297 INFO L470 AbstractCegarLoop]: Abstraction has 309 states and 365 transitions. [2021-11-23 12:45:21,298 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) [2021-11-23 12:45:21,298 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 365 transitions. [2021-11-23 12:45:21,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-23 12:45:21,299 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:45:21,299 INFO L514 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] [2021-11-23 12:45:21,348 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a73407-7dca-4bb9-bce0-8d4053266167/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-23 12:45:21,515 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a73407-7dca-4bb9-bce0-8d4053266167/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-23 12:45:21,516 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)] === [2021-11-23 12:45:21,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:45:21,517 INFO L85 PathProgramCache]: Analyzing trace with hash 1174858719, now seen corresponding path program 1 times [2021-11-23 12:45:21,517 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:45:21,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279375387] [2021-11-23 12:45:21,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:45:21,517 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:45:21,531 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 12:45:21,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1927170561] [2021-11-23 12:45:21,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:45:21,532 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:45:21,532 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a73407-7dca-4bb9-bce0-8d4053266167/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:45:21,533 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a73407-7dca-4bb9-bce0-8d4053266167/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 12:45:21,551 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a73407-7dca-4bb9-bce0-8d4053266167/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-23 12:45:21,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:45:21,907 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-23 12:45:21,909 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:45:22,056 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 12:45:22,057 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 12:45:22,057 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:45:22,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279375387] [2021-11-23 12:45:22,057 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 12:45:22,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1927170561] [2021-11-23 12:45:22,058 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1927170561] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:45:22,058 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:45:22,058 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 12:45:22,058 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311013607] [2021-11-23 12:45:22,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:45:22,059 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 12:45:22,059 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:45:22,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 12:45:22,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:45:22,061 INFO L87 Difference]: Start difference. First operand 309 states and 365 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) [2021-11-23 12:45:22,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:45:22,095 INFO L93 Difference]: Finished difference Result 578 states and 692 transitions. [2021-11-23 12:45:22,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 12:45:22,096 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 [2021-11-23 12:45:22,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:45:22,101 INFO L225 Difference]: With dead ends: 578 [2021-11-23 12:45:22,101 INFO L226 Difference]: Without dead ends: 312 [2021-11-23 12:45:22,102 INFO L932 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 [2021-11-23 12:45:22,103 INFO L933 BasicCegarLoop]: 156 mSDtfsCounter, 0 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 304 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:45:22,104 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 304 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:45:22,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2021-11-23 12:45:22,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 312. [2021-11-23 12:45:22,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312 states, 308 states have (on average 1.1948051948051948) internal successors, (368), 311 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) [2021-11-23 12:45:22,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 368 transitions. [2021-11-23 12:45:22,120 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 368 transitions. Word has length 69 [2021-11-23 12:45:22,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:45:22,121 INFO L470 AbstractCegarLoop]: Abstraction has 312 states and 368 transitions. [2021-11-23 12:45:22,121 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) [2021-11-23 12:45:22,121 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 368 transitions. [2021-11-23 12:45:22,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-23 12:45:22,122 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:45:22,122 INFO L514 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] [2021-11-23 12:45:22,168 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a73407-7dca-4bb9-bce0-8d4053266167/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-23 12:45:22,347 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a73407-7dca-4bb9-bce0-8d4053266167/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-11-23 12:45:22,348 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-23 12:45:22,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:45:22,349 INFO L85 PathProgramCache]: Analyzing trace with hash 31134581, now seen corresponding path program 1 times [2021-11-23 12:45:22,349 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:45:22,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831675651] [2021-11-23 12:45:22,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:45:22,349 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:45:22,365 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 12:45:22,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [426280216] [2021-11-23 12:45:22,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:45:22,367 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:45:22,367 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a73407-7dca-4bb9-bce0-8d4053266167/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:45:22,368 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a73407-7dca-4bb9-bce0-8d4053266167/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 12:45:22,403 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a73407-7dca-4bb9-bce0-8d4053266167/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-23 12:45:22,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:45:22,732 INFO L263 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-23 12:45:22,734 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:45:22,884 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 12:45:22,884 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:45:23,029 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 12:45:23,030 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:45:23,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831675651] [2021-11-23 12:45:23,030 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 12:45:23,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [426280216] [2021-11-23 12:45:23,031 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [426280216] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 12:45:23,031 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-23 12:45:23,031 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2021-11-23 12:45:23,031 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100576269] [2021-11-23 12:45:23,032 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-23 12:45:23,032 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 12:45:23,032 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:45:23,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 12:45:23,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-23 12:45:23,033 INFO L87 Difference]: Start difference. First operand 312 states and 368 transitions. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 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) [2021-11-23 12:45:23,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:45:23,133 INFO L93 Difference]: Finished difference Result 592 states and 715 transitions. [2021-11-23 12:45:23,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 12:45:23,134 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 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 70 [2021-11-23 12:45:23,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:45:23,137 INFO L225 Difference]: With dead ends: 592 [2021-11-23 12:45:23,137 INFO L226 Difference]: Without dead ends: 324 [2021-11-23 12:45:23,138 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-11-23 12:45:23,139 INFO L933 BasicCegarLoop]: 155 mSDtfsCounter, 0 mSDsluCounter, 444 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 599 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 12:45:23,139 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 599 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 12:45:23,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2021-11-23 12:45:23,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 324. [2021-11-23 12:45:23,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 324 states, 320 states have (on average 1.1875) internal successors, (380), 323 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:45:23,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 380 transitions. [2021-11-23 12:45:23,157 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 380 transitions. Word has length 70 [2021-11-23 12:45:23,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:45:23,157 INFO L470 AbstractCegarLoop]: Abstraction has 324 states and 380 transitions. [2021-11-23 12:45:23,158 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 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) [2021-11-23 12:45:23,158 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 380 transitions. [2021-11-23 12:45:23,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-23 12:45:23,159 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:45:23,159 INFO L514 BasicCegarLoop]: trace histogram [4, 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] [2021-11-23 12:45:23,203 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a73407-7dca-4bb9-bce0-8d4053266167/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-23 12:45:23,383 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a73407-7dca-4bb9-bce0-8d4053266167/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-11-23 12:45:23,384 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)] === [2021-11-23 12:45:23,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:45:23,385 INFO L85 PathProgramCache]: Analyzing trace with hash -74608172, now seen corresponding path program 2 times [2021-11-23 12:45:23,385 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:45:23,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567619842] [2021-11-23 12:45:23,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:45:23,385 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:45:23,395 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 12:45:23,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [185413998] [2021-11-23 12:45:23,395 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-23 12:45:23,395 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:45:23,396 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a73407-7dca-4bb9-bce0-8d4053266167/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:45:23,411 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a73407-7dca-4bb9-bce0-8d4053266167/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 12:45:23,413 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a73407-7dca-4bb9-bce0-8d4053266167/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-23 12:45:23,711 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-23 12:45:23,711 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 12:45:23,715 INFO L263 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-23 12:45:23,717 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:45:23,971 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-23 12:45:23,971 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:45:24,459 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:45:24,459 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:45:24,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567619842] [2021-11-23 12:45:24,460 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 12:45:24,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [185413998] [2021-11-23 12:45:24,460 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [185413998] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 12:45:24,460 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-23 12:45:24,460 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2021-11-23 12:45:24,461 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667206266] [2021-11-23 12:45:24,461 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-23 12:45:24,461 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-23 12:45:24,461 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:45:24,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-23 12:45:24,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2021-11-23 12:45:24,463 INFO L87 Difference]: Start difference. First operand 324 states and 380 transitions. Second operand has 14 states, 14 states have (on average 6.071428571428571) internal successors, (85), 14 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:45:27,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:45:27,741 INFO L93 Difference]: Finished difference Result 1103 states and 1344 transitions. [2021-11-23 12:45:27,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-23 12:45:27,742 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.071428571428571) internal successors, (85), 14 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2021-11-23 12:45:27,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:45:27,748 INFO L225 Difference]: With dead ends: 1103 [2021-11-23 12:45:27,748 INFO L226 Difference]: Without dead ends: 826 [2021-11-23 12:45:27,750 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=209, Invalid=547, Unknown=0, NotChecked=0, Total=756 [2021-11-23 12:45:27,750 INFO L933 BasicCegarLoop]: 404 mSDtfsCounter, 1134 mSDsluCounter, 2116 mSDsCounter, 0 mSdLazyCounter, 444 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1134 SdHoareTripleChecker+Valid, 2520 SdHoareTripleChecker+Invalid, 503 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-11-23 12:45:27,751 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1134 Valid, 2520 Invalid, 503 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 444 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-11-23 12:45:27,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 826 states. [2021-11-23 12:45:27,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 826 to 366. [2021-11-23 12:45:27,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 366 states, 362 states have (on average 1.1823204419889504) internal successors, (428), 365 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:45:27,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366 states to 366 states and 428 transitions. [2021-11-23 12:45:27,793 INFO L78 Accepts]: Start accepts. Automaton has 366 states and 428 transitions. Word has length 74 [2021-11-23 12:45:27,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:45:27,793 INFO L470 AbstractCegarLoop]: Abstraction has 366 states and 428 transitions. [2021-11-23 12:45:27,794 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.071428571428571) internal successors, (85), 14 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:45:27,794 INFO L276 IsEmpty]: Start isEmpty. Operand 366 states and 428 transitions. [2021-11-23 12:45:27,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-23 12:45:27,795 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:45:27,795 INFO L514 BasicCegarLoop]: trace histogram [10, 5, 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] [2021-11-23 12:45:27,802 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a73407-7dca-4bb9-bce0-8d4053266167/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2021-11-23 12:45:28,002 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a73407-7dca-4bb9-bce0-8d4053266167/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-11-23 12:45:28,003 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)] === [2021-11-23 12:45:28,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:45:28,004 INFO L85 PathProgramCache]: Analyzing trace with hash 497786591, now seen corresponding path program 3 times [2021-11-23 12:45:28,004 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:45:28,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227127531] [2021-11-23 12:45:28,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:45:28,005 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:45:28,041 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 12:45:28,041 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1769750036] [2021-11-23 12:45:28,042 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-23 12:45:28,042 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:45:28,042 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a73407-7dca-4bb9-bce0-8d4053266167/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:45:28,043 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a73407-7dca-4bb9-bce0-8d4053266167/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 12:45:28,063 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a73407-7dca-4bb9-bce0-8d4053266167/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-23 12:45:28,652 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-23 12:45:28,653 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 12:45:28,656 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 12:45:28,659 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:45:28,908 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-11-23 12:45:28,908 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:45:29,726 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-11-23 12:45:29,727 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:45:29,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227127531] [2021-11-23 12:45:29,727 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 12:45:29,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1769750036] [2021-11-23 12:45:29,728 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1769750036] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-23 12:45:29,728 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-23 12:45:29,728 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 8 [2021-11-23 12:45:29,728 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917433973] [2021-11-23 12:45:29,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:45:29,729 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 12:45:29,729 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:45:29,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 12:45:29,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-11-23 12:45:29,730 INFO L87 Difference]: Start difference. First operand 366 states and 428 transitions. Second operand has 6 states, 5 states have (on average 14.0) internal successors, (70), 6 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) [2021-11-23 12:45:29,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:45:29,817 INFO L93 Difference]: Finished difference Result 366 states and 428 transitions. [2021-11-23 12:45:29,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 12:45:29,818 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 14.0) internal successors, (70), 6 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 83 [2021-11-23 12:45:29,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:45:29,821 INFO L225 Difference]: With dead ends: 366 [2021-11-23 12:45:29,821 INFO L226 Difference]: Without dead ends: 365 [2021-11-23 12:45:29,822 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-11-23 12:45:29,822 INFO L933 BasicCegarLoop]: 147 mSDtfsCounter, 255 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:45:29,823 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [255 Valid, 344 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:45:29,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2021-11-23 12:45:29,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 365. [2021-11-23 12:45:29,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 365 states, 362 states have (on average 1.1767955801104972) internal successors, (426), 364 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:45:29,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 426 transitions. [2021-11-23 12:45:29,861 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 426 transitions. Word has length 83 [2021-11-23 12:45:29,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:45:29,862 INFO L470 AbstractCegarLoop]: Abstraction has 365 states and 426 transitions. [2021-11-23 12:45:29,862 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 14.0) internal successors, (70), 6 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) [2021-11-23 12:45:29,862 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 426 transitions. [2021-11-23 12:45:29,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2021-11-23 12:45:29,865 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:45:29,865 INFO L514 BasicCegarLoop]: trace histogram [10, 5, 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] [2021-11-23 12:45:29,879 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a73407-7dca-4bb9-bce0-8d4053266167/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-11-23 12:45:30,079 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a73407-7dca-4bb9-bce0-8d4053266167/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-11-23 12:45:30,080 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)] === [2021-11-23 12:45:30,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:45:30,081 INFO L85 PathProgramCache]: Analyzing trace with hash 971300721, now seen corresponding path program 1 times [2021-11-23 12:45:30,081 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:45:30,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338496062] [2021-11-23 12:45:30,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:45:30,082 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:45:30,105 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 12:45:30,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1264395048] [2021-11-23 12:45:30,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:45:30,109 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:45:30,109 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a73407-7dca-4bb9-bce0-8d4053266167/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:45:30,110 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a73407-7dca-4bb9-bce0-8d4053266167/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 12:45:30,134 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a73407-7dca-4bb9-bce0-8d4053266167/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-23 12:45:30,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:45:30,404 INFO L263 TraceCheckSpWp]: Trace formula consists of 611 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-23 12:45:30,409 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:45:30,968 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 0 proven. 159 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-11-23 12:45:30,968 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:45:31,559 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 0 proven. 159 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-11-23 12:45:31,559 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:45:31,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338496062] [2021-11-23 12:45:31,559 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 12:45:31,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1264395048] [2021-11-23 12:45:31,560 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1264395048] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 12:45:31,560 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-23 12:45:31,560 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-11-23 12:45:31,560 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218571134] [2021-11-23 12:45:31,561 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-23 12:45:31,562 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-23 12:45:31,562 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:45:31,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-23 12:45:31,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2021-11-23 12:45:31,563 INFO L87 Difference]: Start difference. First operand 365 states and 426 transitions. Second operand has 14 states, 13 states have (on average 26.846153846153847) internal successors, (349), 14 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:45:31,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:45:31,746 INFO L93 Difference]: Finished difference Result 512 states and 602 transitions. [2021-11-23 12:45:31,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-23 12:45:31,747 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 26.846153846153847) internal successors, (349), 14 states have internal predecessors, (349), 0 states have call successors, (0), 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 188 [2021-11-23 12:45:31,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:45:31,751 INFO L225 Difference]: With dead ends: 512 [2021-11-23 12:45:31,751 INFO L226 Difference]: Without dead ends: 511 [2021-11-23 12:45:31,754 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 378 GetRequests, 362 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=105, Invalid=201, Unknown=0, NotChecked=0, Total=306 [2021-11-23 12:45:31,755 INFO L933 BasicCegarLoop]: 147 mSDtfsCounter, 490 mSDsluCounter, 877 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 490 SdHoareTripleChecker+Valid, 1024 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 12:45:31,756 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [490 Valid, 1024 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 12:45:31,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 511 states. [2021-11-23 12:45:31,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 511 to 364. [2021-11-23 12:45:31,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 364 states, 362 states have (on average 1.1740331491712708) internal successors, (425), 363 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:45:31,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 425 transitions. [2021-11-23 12:45:31,822 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 425 transitions. Word has length 188 [2021-11-23 12:45:31,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:45:31,822 INFO L470 AbstractCegarLoop]: Abstraction has 364 states and 425 transitions. [2021-11-23 12:45:31,823 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 26.846153846153847) internal successors, (349), 14 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:45:31,823 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 425 transitions. [2021-11-23 12:45:31,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2021-11-23 12:45:31,826 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:45:31,827 INFO L514 BasicCegarLoop]: trace histogram [10, 5, 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] [2021-11-23 12:45:31,875 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a73407-7dca-4bb9-bce0-8d4053266167/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-11-23 12:45:32,051 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a73407-7dca-4bb9-bce0-8d4053266167/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:45:32,052 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)] === [2021-11-23 12:45:32,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:45:32,052 INFO L85 PathProgramCache]: Analyzing trace with hash -1247876223, now seen corresponding path program 1 times [2021-11-23 12:45:32,053 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:45:32,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584497719] [2021-11-23 12:45:32,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:45:32,053 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:45:32,078 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 12:45:32,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1848922621] [2021-11-23 12:45:32,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:45:32,079 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:45:32,079 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a73407-7dca-4bb9-bce0-8d4053266167/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:45:32,080 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a73407-7dca-4bb9-bce0-8d4053266167/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 12:45:32,108 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a73407-7dca-4bb9-bce0-8d4053266167/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-23 12:45:32,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:45:32,369 INFO L263 TraceCheckSpWp]: Trace formula consists of 635 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 12:45:32,374 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:45:32,936 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 0 proven. 164 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-11-23 12:45:32,936 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:45:33,547 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 0 proven. 164 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-11-23 12:45:33,548 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:45:33,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584497719] [2021-11-23 12:45:33,548 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 12:45:33,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1848922621] [2021-11-23 12:45:33,548 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1848922621] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 12:45:33,549 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-23 12:45:33,549 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2021-11-23 12:45:33,549 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575227654] [2021-11-23 12:45:33,549 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-23 12:45:33,550 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-23 12:45:33,550 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:45:33,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-23 12:45:33,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2021-11-23 12:45:33,552 INFO L87 Difference]: Start difference. First operand 364 states and 425 transitions. Second operand has 16 states, 16 states have (on average 22.25) internal successors, (356), 16 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:45:33,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:45:33,865 INFO L93 Difference]: Finished difference Result 835 states and 978 transitions. [2021-11-23 12:45:33,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-23 12:45:33,866 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 22.25) internal successors, (356), 16 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 193 [2021-11-23 12:45:33,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:45:33,873 INFO L225 Difference]: With dead ends: 835 [2021-11-23 12:45:33,873 INFO L226 Difference]: Without dead ends: 796 [2021-11-23 12:45:33,874 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 390 GetRequests, 370 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=151, Invalid=311, Unknown=0, NotChecked=0, Total=462 [2021-11-23 12:45:33,875 INFO L933 BasicCegarLoop]: 148 mSDtfsCounter, 1113 mSDsluCounter, 1218 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1113 SdHoareTripleChecker+Valid, 1366 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 12:45:33,876 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1113 Valid, 1366 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 12:45:33,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 796 states. [2021-11-23 12:45:33,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 796 to 796. [2021-11-23 12:45:33,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 796 states, 794 states have (on average 1.1649874055415617) internal successors, (925), 795 states have internal predecessors, (925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:45:33,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 796 states to 796 states and 925 transitions. [2021-11-23 12:45:33,967 INFO L78 Accepts]: Start accepts. Automaton has 796 states and 925 transitions. Word has length 193 [2021-11-23 12:45:33,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:45:33,968 INFO L470 AbstractCegarLoop]: Abstraction has 796 states and 925 transitions. [2021-11-23 12:45:33,968 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 22.25) internal successors, (356), 16 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:45:33,968 INFO L276 IsEmpty]: Start isEmpty. Operand 796 states and 925 transitions. [2021-11-23 12:45:33,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 414 [2021-11-23 12:45:33,978 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:45:33,978 INFO L514 BasicCegarLoop]: trace histogram [10, 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, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:45:34,027 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a73407-7dca-4bb9-bce0-8d4053266167/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-11-23 12:45:34,191 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a73407-7dca-4bb9-bce0-8d4053266167/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:45:34,192 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-23 12:45:34,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:45:34,193 INFO L85 PathProgramCache]: Analyzing trace with hash -83801663, now seen corresponding path program 2 times [2021-11-23 12:45:34,193 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:45:34,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786367571] [2021-11-23 12:45:34,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:45:34,193 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:45:34,244 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 12:45:34,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [183023072] [2021-11-23 12:45:34,253 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-23 12:45:34,253 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:45:34,254 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a73407-7dca-4bb9-bce0-8d4053266167/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:45:34,255 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a73407-7dca-4bb9-bce0-8d4053266167/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 12:45:34,282 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a73407-7dca-4bb9-bce0-8d4053266167/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-11-23 12:45:34,461 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-23 12:45:34,461 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 12:45:34,463 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 12:45:34,478 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:45:35,603 INFO L134 CoverageAnalysis]: Checked inductivity of 1220 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1220 trivial. 0 not checked. [2021-11-23 12:45:35,603 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 12:45:35,603 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:45:35,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786367571] [2021-11-23 12:45:35,604 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 12:45:35,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [183023072] [2021-11-23 12:45:35,604 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [183023072] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:45:35,604 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:45:35,605 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 12:45:35,606 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061355601] [2021-11-23 12:45:35,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:45:35,607 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 12:45:35,607 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:45:35,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 12:45:35,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 12:45:35,608 INFO L87 Difference]: Start difference. First operand 796 states and 925 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) [2021-11-23 12:45:35,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:45:35,735 INFO L93 Difference]: Finished difference Result 832 states and 971 transitions. [2021-11-23 12:45:35,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 12:45:35,736 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 413 [2021-11-23 12:45:35,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:45:35,743 INFO L225 Difference]: With dead ends: 832 [2021-11-23 12:45:35,744 INFO L226 Difference]: Without dead ends: 831 [2021-11-23 12:45:35,744 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 413 GetRequests, 410 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 12:45:35,745 INFO L933 BasicCegarLoop]: 142 mSDtfsCounter, 81 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 319 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:45:35,760 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [81 Valid, 319 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:45:35,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 831 states. [2021-11-23 12:45:35,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 831 to 798. [2021-11-23 12:45:35,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 798 states, 796 states have (on average 1.164572864321608) internal successors, (927), 797 states have internal predecessors, (927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:45:35,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 798 states to 798 states and 927 transitions. [2021-11-23 12:45:35,863 INFO L78 Accepts]: Start accepts. Automaton has 798 states and 927 transitions. Word has length 413 [2021-11-23 12:45:35,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:45:35,865 INFO L470 AbstractCegarLoop]: Abstraction has 798 states and 927 transitions. [2021-11-23 12:45:35,865 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) [2021-11-23 12:45:35,865 INFO L276 IsEmpty]: Start isEmpty. Operand 798 states and 927 transitions. [2021-11-23 12:45:35,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2021-11-23 12:45:35,876 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:45:35,876 INFO L514 BasicCegarLoop]: trace histogram [10, 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, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:45:35,919 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a73407-7dca-4bb9-bce0-8d4053266167/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-11-23 12:45:36,100 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a73407-7dca-4bb9-bce0-8d4053266167/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-11-23 12:45:36,100 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-23 12:45:36,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:45:36,101 INFO L85 PathProgramCache]: Analyzing trace with hash 1697116184, now seen corresponding path program 1 times [2021-11-23 12:45:36,101 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:45:36,101 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912477030] [2021-11-23 12:45:36,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:45:36,101 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:45:36,133 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 12:45:36,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1223768761] [2021-11-23 12:45:36,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:45:36,133 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:45:36,134 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a73407-7dca-4bb9-bce0-8d4053266167/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:45:36,134 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a73407-7dca-4bb9-bce0-8d4053266167/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 12:45:36,135 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a73407-7dca-4bb9-bce0-8d4053266167/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-11-23 12:45:36,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:45:36,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 1184 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-23 12:45:36,564 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:45:37,790 INFO L134 CoverageAnalysis]: Checked inductivity of 1220 backedges. 0 proven. 1150 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-11-23 12:45:37,790 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:45:38,892 INFO L134 CoverageAnalysis]: Checked inductivity of 1220 backedges. 0 proven. 1150 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-11-23 12:45:38,892 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:45:38,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912477030] [2021-11-23 12:45:38,922 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 12:45:38,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1223768761] [2021-11-23 12:45:38,922 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1223768761] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 12:45:38,922 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-23 12:45:38,923 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 21 [2021-11-23 12:45:38,923 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589146871] [2021-11-23 12:45:38,923 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-23 12:45:38,925 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-23 12:45:38,925 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:45:38,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-23 12:45:38,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2021-11-23 12:45:38,926 INFO L87 Difference]: Start difference. First operand 798 states and 927 transitions. Second operand has 21 states, 21 states have (on average 25.0) internal successors, (525), 21 states have internal predecessors, (525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:45:39,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:45:39,319 INFO L93 Difference]: Finished difference Result 1163 states and 1356 transitions. [2021-11-23 12:45:39,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-23 12:45:39,320 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 25.0) internal successors, (525), 21 states have internal predecessors, (525), 0 states have call successors, (0), 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 414 [2021-11-23 12:45:39,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:45:39,329 INFO L225 Difference]: With dead ends: 1163 [2021-11-23 12:45:39,330 INFO L226 Difference]: Without dead ends: 1122 [2021-11-23 12:45:39,331 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 835 GetRequests, 806 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=273, Invalid=597, Unknown=0, NotChecked=0, Total=870 [2021-11-23 12:45:39,332 INFO L933 BasicCegarLoop]: 148 mSDtfsCounter, 1693 mSDsluCounter, 1112 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1693 SdHoareTripleChecker+Valid, 1260 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 12:45:39,333 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1693 Valid, 1260 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 12:45:39,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1122 states. [2021-11-23 12:45:39,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1122 to 1122. [2021-11-23 12:45:39,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1122 states, 1120 states have (on average 1.1625) internal successors, (1302), 1121 states have internal predecessors, (1302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:45:39,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1122 states to 1122 states and 1302 transitions. [2021-11-23 12:45:39,440 INFO L78 Accepts]: Start accepts. Automaton has 1122 states and 1302 transitions. Word has length 414 [2021-11-23 12:45:39,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:45:39,442 INFO L470 AbstractCegarLoop]: Abstraction has 1122 states and 1302 transitions. [2021-11-23 12:45:39,442 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 25.0) internal successors, (525), 21 states have internal predecessors, (525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:45:39,442 INFO L276 IsEmpty]: Start isEmpty. Operand 1122 states and 1302 transitions. [2021-11-23 12:45:39,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 580 [2021-11-23 12:45:39,462 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:45:39,463 INFO L514 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, 10, 9, 9, 9, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:45:39,513 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a73407-7dca-4bb9-bce0-8d4053266167/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-11-23 12:45:39,687 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a73407-7dca-4bb9-bce0-8d4053266167/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-11-23 12:45:39,688 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-23 12:45:39,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:45:39,689 INFO L85 PathProgramCache]: Analyzing trace with hash -956903927, now seen corresponding path program 2 times [2021-11-23 12:45:39,689 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:45:39,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915280269] [2021-11-23 12:45:39,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:45:39,689 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:45:39,723 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 12:45:39,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [932374803] [2021-11-23 12:45:39,724 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-23 12:45:39,724 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:45:39,724 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a73407-7dca-4bb9-bce0-8d4053266167/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:45:39,725 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a73407-7dca-4bb9-bce0-8d4053266167/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 12:45:39,755 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a73407-7dca-4bb9-bce0-8d4053266167/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-11-23 12:45:39,970 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-23 12:45:39,970 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 12:45:39,972 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 12:45:39,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:45:41,345 INFO L134 CoverageAnalysis]: Checked inductivity of 2537 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2537 trivial. 0 not checked. [2021-11-23 12:45:41,345 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 12:45:41,345 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:45:41,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915280269] [2021-11-23 12:45:41,346 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 12:45:41,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [932374803] [2021-11-23 12:45:41,346 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [932374803] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:45:41,346 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:45:41,347 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 12:45:41,347 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425338343] [2021-11-23 12:45:41,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:45:41,348 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 12:45:41,348 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:45:41,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 12:45:41,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 12:45:41,350 INFO L87 Difference]: Start difference. First operand 1122 states and 1302 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) [2021-11-23 12:45:41,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:45:41,493 INFO L93 Difference]: Finished difference Result 1122 states and 1302 transitions. [2021-11-23 12:45:41,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 12:45:41,493 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 579 [2021-11-23 12:45:41,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:45:41,502 INFO L225 Difference]: With dead ends: 1122 [2021-11-23 12:45:41,502 INFO L226 Difference]: Without dead ends: 1121 [2021-11-23 12:45:41,503 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 579 GetRequests, 576 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 12:45:41,504 INFO L933 BasicCegarLoop]: 141 mSDtfsCounter, 123 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 250 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:45:41,505 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [123 Valid, 250 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:45:41,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1121 states. [2021-11-23 12:45:41,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1121 to 1121. [2021-11-23 12:45:41,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1121 states, 1120 states have (on average 1.1616071428571428) internal successors, (1301), 1120 states have internal predecessors, (1301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:45:41,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1121 states to 1121 states and 1301 transitions. [2021-11-23 12:45:41,627 INFO L78 Accepts]: Start accepts. Automaton has 1121 states and 1301 transitions. Word has length 579 [2021-11-23 12:45:41,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:45:41,629 INFO L470 AbstractCegarLoop]: Abstraction has 1121 states and 1301 transitions. [2021-11-23 12:45:41,629 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) [2021-11-23 12:45:41,629 INFO L276 IsEmpty]: Start isEmpty. Operand 1121 states and 1301 transitions. [2021-11-23 12:45:41,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 588 [2021-11-23 12:45:41,636 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:45:41,637 INFO L514 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, 10, 9, 9, 9, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:45:41,680 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a73407-7dca-4bb9-bce0-8d4053266167/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-11-23 12:45:41,863 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a73407-7dca-4bb9-bce0-8d4053266167/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:45:41,864 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-23 12:45:41,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:45:41,864 INFO L85 PathProgramCache]: Analyzing trace with hash -861330846, now seen corresponding path program 1 times [2021-11-23 12:45:41,865 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:45:41,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229911917] [2021-11-23 12:45:41,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:45:41,865 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:45:41,914 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 12:45:41,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [40872249] [2021-11-23 12:45:41,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:45:41,919 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:45:41,919 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a73407-7dca-4bb9-bce0-8d4053266167/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:45:41,920 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a73407-7dca-4bb9-bce0-8d4053266167/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 12:45:41,941 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a73407-7dca-4bb9-bce0-8d4053266167/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-11-23 12:45:42,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:45:42,450 INFO L263 TraceCheckSpWp]: Trace formula consists of 1627 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 12:45:42,462 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:45:43,903 INFO L134 CoverageAnalysis]: Checked inductivity of 2539 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2537 trivial. 0 not checked. [2021-11-23 12:45:43,903 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:45:45,415 INFO L134 CoverageAnalysis]: Checked inductivity of 2539 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2537 trivial. 0 not checked. [2021-11-23 12:45:45,415 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:45:45,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229911917] [2021-11-23 12:45:45,416 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 12:45:45,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [40872249] [2021-11-23 12:45:45,416 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [40872249] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 12:45:45,417 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-23 12:45:45,417 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2021-11-23 12:45:45,418 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707112603] [2021-11-23 12:45:45,418 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-23 12:45:45,419 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-23 12:45:45,419 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:45:45,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-23 12:45:45,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-11-23 12:45:45,420 INFO L87 Difference]: Start difference. First operand 1121 states and 1301 transitions. Second operand has 10 states, 9 states have (on average 18.22222222222222) internal successors, (164), 9 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:45:45,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:45:45,689 INFO L93 Difference]: Finished difference Result 1231 states and 1443 transitions. [2021-11-23 12:45:45,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-23 12:45:45,689 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 18.22222222222222) internal successors, (164), 9 states have internal predecessors, (164), 0 states have call successors, (0), 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 587 [2021-11-23 12:45:45,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:45:45,699 INFO L225 Difference]: With dead ends: 1231 [2021-11-23 12:45:45,700 INFO L226 Difference]: Without dead ends: 1230 [2021-11-23 12:45:45,701 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1179 GetRequests, 1164 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=173, Unknown=0, NotChecked=0, Total=272 [2021-11-23 12:45:45,701 INFO L933 BasicCegarLoop]: 142 mSDtfsCounter, 628 mSDsluCounter, 558 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 628 SdHoareTripleChecker+Valid, 700 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 12:45:45,702 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [628 Valid, 700 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 12:45:45,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1230 states. [2021-11-23 12:45:45,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1230 to 1229. [2021-11-23 12:45:45,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1229 states, 1228 states have (on average 1.1718241042345277) internal successors, (1439), 1228 states have internal predecessors, (1439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:45:45,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1229 states to 1229 states and 1439 transitions. [2021-11-23 12:45:45,812 INFO L78 Accepts]: Start accepts. Automaton has 1229 states and 1439 transitions. Word has length 587 [2021-11-23 12:45:45,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:45:45,813 INFO L470 AbstractCegarLoop]: Abstraction has 1229 states and 1439 transitions. [2021-11-23 12:45:45,814 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 18.22222222222222) internal successors, (164), 9 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:45:45,814 INFO L276 IsEmpty]: Start isEmpty. Operand 1229 states and 1439 transitions. [2021-11-23 12:45:45,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 615 [2021-11-23 12:45:45,821 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:45:45,822 INFO L514 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, 10, 9, 9, 9, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:45:45,869 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a73407-7dca-4bb9-bce0-8d4053266167/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-11-23 12:45:46,047 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a73407-7dca-4bb9-bce0-8d4053266167/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:45:46,048 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)] === [2021-11-23 12:45:46,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:45:46,049 INFO L85 PathProgramCache]: Analyzing trace with hash -2045498832, now seen corresponding path program 2 times [2021-11-23 12:45:46,049 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:45:46,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651769660] [2021-11-23 12:45:46,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:45:46,050 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:45:46,104 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 12:45:46,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1167098608] [2021-11-23 12:45:46,107 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-23 12:45:46,107 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:45:46,107 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a73407-7dca-4bb9-bce0-8d4053266167/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:45:46,108 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a73407-7dca-4bb9-bce0-8d4053266167/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 12:45:46,135 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a73407-7dca-4bb9-bce0-8d4053266167/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-11-23 12:45:46,636 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-23 12:45:46,636 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 12:45:46,649 INFO L263 TraceCheckSpWp]: Trace formula consists of 1726 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-23 12:45:46,660 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:45:48,168 INFO L134 CoverageAnalysis]: Checked inductivity of 2599 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 2537 trivial. 0 not checked. [2021-11-23 12:45:48,169 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:45:49,959 INFO L134 CoverageAnalysis]: Checked inductivity of 2599 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 2537 trivial. 0 not checked. [2021-11-23 12:45:49,960 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:45:49,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651769660] [2021-11-23 12:45:49,960 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 12:45:49,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1167098608] [2021-11-23 12:45:49,961 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1167098608] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 12:45:49,961 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-23 12:45:49,962 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 20 [2021-11-23 12:45:49,962 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310152951] [2021-11-23 12:45:49,962 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-23 12:45:49,965 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-23 12:45:49,965 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:45:49,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-23 12:45:49,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2021-11-23 12:45:49,968 INFO L87 Difference]: Start difference. First operand 1229 states and 1439 transitions. Second operand has 22 states, 21 states have (on average 10.380952380952381) internal successors, (218), 21 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:45:50,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:45:50,694 INFO L93 Difference]: Finished difference Result 1447 states and 1722 transitions. [2021-11-23 12:45:50,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-11-23 12:45:50,695 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 10.380952380952381) internal successors, (218), 21 states have internal predecessors, (218), 0 states have call successors, (0), 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 614 [2021-11-23 12:45:50,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:45:50,706 INFO L225 Difference]: With dead ends: 1447 [2021-11-23 12:45:50,706 INFO L226 Difference]: Without dead ends: 1446 [2021-11-23 12:45:50,708 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1245 GetRequests, 1206 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 289 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=549, Invalid=1091, Unknown=0, NotChecked=0, Total=1640 [2021-11-23 12:45:50,709 INFO L933 BasicCegarLoop]: 142 mSDtfsCounter, 2184 mSDsluCounter, 1057 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2184 SdHoareTripleChecker+Valid, 1199 SdHoareTripleChecker+Invalid, 277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 12:45:50,709 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2184 Valid, 1199 Invalid, 277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 248 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-23 12:45:50,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1446 states. [2021-11-23 12:45:50,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1446 to 1445. [2021-11-23 12:45:50,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1445 states, 1444 states have (on average 1.1876731301939059) internal successors, (1715), 1444 states have internal predecessors, (1715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:45:50,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1445 states to 1445 states and 1715 transitions. [2021-11-23 12:45:50,834 INFO L78 Accepts]: Start accepts. Automaton has 1445 states and 1715 transitions. Word has length 614 [2021-11-23 12:45:50,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:45:50,836 INFO L470 AbstractCegarLoop]: Abstraction has 1445 states and 1715 transitions. [2021-11-23 12:45:50,836 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 10.380952380952381) internal successors, (218), 21 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:45:50,836 INFO L276 IsEmpty]: Start isEmpty. Operand 1445 states and 1715 transitions. [2021-11-23 12:45:50,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 669 [2021-11-23 12:45:50,845 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:45:50,845 INFO L514 BasicCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:45:50,889 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a73407-7dca-4bb9-bce0-8d4053266167/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2021-11-23 12:45:51,059 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a73407-7dca-4bb9-bce0-8d4053266167/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2021-11-23 12:45:51,060 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-23 12:45:51,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:45:51,061 INFO L85 PathProgramCache]: Analyzing trace with hash -326298896, now seen corresponding path program 3 times [2021-11-23 12:45:51,061 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:45:51,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204894284] [2021-11-23 12:45:51,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:45:51,061 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:45:51,093 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 12:45:51,094 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [853762018] [2021-11-23 12:45:51,094 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-23 12:45:51,094 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:45:51,095 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a73407-7dca-4bb9-bce0-8d4053266167/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:45:51,096 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a73407-7dca-4bb9-bce0-8d4053266167/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 12:45:51,098 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a73407-7dca-4bb9-bce0-8d4053266167/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-11-23 12:45:51,324 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-23 12:45:51,324 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 12:45:51,327 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 12:45:51,336 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:45:52,484 INFO L134 CoverageAnalysis]: Checked inductivity of 2962 backedges. 74 proven. 0 refuted. 0 times theorem prover too weak. 2888 trivial. 0 not checked. [2021-11-23 12:45:52,484 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 12:45:52,485 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:45:52,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204894284] [2021-11-23 12:45:52,485 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 12:45:52,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [853762018] [2021-11-23 12:45:52,486 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [853762018] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:45:52,486 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:45:52,486 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 12:45:52,487 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779864814] [2021-11-23 12:45:52,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:45:52,488 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 12:45:52,488 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:45:52,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 12:45:52,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-23 12:45:52,489 INFO L87 Difference]: Start difference. First operand 1445 states and 1715 transitions. Second operand has 5 states, 4 states have (on average 22.25) internal successors, (89), 5 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) [2021-11-23 12:45:52,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:45:52,705 INFO L93 Difference]: Finished difference Result 1812 states and 2172 transitions. [2021-11-23 12:45:52,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 12:45:52,706 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 22.25) internal successors, (89), 5 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 668 [2021-11-23 12:45:52,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:45:52,719 INFO L225 Difference]: With dead ends: 1812 [2021-11-23 12:45:52,720 INFO L226 Difference]: Without dead ends: 1811 [2021-11-23 12:45:52,725 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 671 GetRequests, 666 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-23 12:45:52,727 INFO L933 BasicCegarLoop]: 132 mSDtfsCounter, 167 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 326 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 12:45:52,728 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [167 Valid, 326 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 12:45:52,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1811 states. [2021-11-23 12:45:52,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1811 to 1715. [2021-11-23 12:45:52,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1715 states, 1714 states have (on average 1.2106184364060677) internal successors, (2075), 1714 states have internal predecessors, (2075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:45:52,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1715 states to 1715 states and 2075 transitions. [2021-11-23 12:45:52,878 INFO L78 Accepts]: Start accepts. Automaton has 1715 states and 2075 transitions. Word has length 668 [2021-11-23 12:45:52,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:45:52,884 INFO L470 AbstractCegarLoop]: Abstraction has 1715 states and 2075 transitions. [2021-11-23 12:45:52,884 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 22.25) internal successors, (89), 5 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) [2021-11-23 12:45:52,885 INFO L276 IsEmpty]: Start isEmpty. Operand 1715 states and 2075 transitions. [2021-11-23 12:45:52,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 670 [2021-11-23 12:45:52,901 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:45:52,902 INFO L514 BasicCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 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, 9, 9, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:45:52,945 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a73407-7dca-4bb9-bce0-8d4053266167/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2021-11-23 12:45:53,115 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a73407-7dca-4bb9-bce0-8d4053266167/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:45:53,116 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-23 12:45:53,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:45:53,116 INFO L85 PathProgramCache]: Analyzing trace with hash 417591387, now seen corresponding path program 1 times [2021-11-23 12:45:53,117 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:45:53,117 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986762252] [2021-11-23 12:45:53,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:45:53,117 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:45:53,157 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 12:45:53,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [383792574] [2021-11-23 12:45:53,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:45:53,158 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:45:53,158 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a73407-7dca-4bb9-bce0-8d4053266167/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:45:53,159 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a73407-7dca-4bb9-bce0-8d4053266167/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 12:45:53,183 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a73407-7dca-4bb9-bce0-8d4053266167/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-11-23 12:45:53,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:45:53,736 INFO L263 TraceCheckSpWp]: Trace formula consists of 1926 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-23 12:45:53,749 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:45:55,606 INFO L134 CoverageAnalysis]: Checked inductivity of 2944 backedges. 0 proven. 407 refuted. 0 times theorem prover too weak. 2537 trivial. 0 not checked. [2021-11-23 12:45:55,606 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:45:57,757 INFO L134 CoverageAnalysis]: Checked inductivity of 2944 backedges. 0 proven. 407 refuted. 0 times theorem prover too weak. 2537 trivial. 0 not checked. [2021-11-23 12:45:57,757 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:45:57,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986762252] [2021-11-23 12:45:57,758 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 12:45:57,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [383792574] [2021-11-23 12:45:57,758 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [383792574] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 12:45:57,758 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-23 12:45:57,759 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 44 [2021-11-23 12:45:57,760 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183904949] [2021-11-23 12:45:57,760 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-23 12:45:57,761 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2021-11-23 12:45:57,762 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:45:57,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2021-11-23 12:45:57,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=551, Invalid=1519, Unknown=0, NotChecked=0, Total=2070 [2021-11-23 12:45:57,765 INFO L87 Difference]: Start difference. First operand 1715 states and 2075 transitions. Second operand has 46 states, 45 states have (on average 7.288888888888889) internal successors, (328), 45 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:45:59,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:45:59,771 INFO L93 Difference]: Finished difference Result 2557 states and 3168 transitions. [2021-11-23 12:45:59,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-11-23 12:45:59,772 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 45 states have (on average 7.288888888888889) internal successors, (328), 45 states have internal predecessors, (328), 0 states have call successors, (0), 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 669 [2021-11-23 12:45:59,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:45:59,791 INFO L225 Difference]: With dead ends: 2557 [2021-11-23 12:45:59,791 INFO L226 Difference]: Without dead ends: 2556 [2021-11-23 12:45:59,796 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1379 GetRequests, 1292 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1615 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=2529, Invalid=5303, Unknown=0, NotChecked=0, Total=7832 [2021-11-23 12:45:59,797 INFO L933 BasicCegarLoop]: 142 mSDtfsCounter, 5780 mSDsluCounter, 1622 mSDsCounter, 0 mSdLazyCounter, 532 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5780 SdHoareTripleChecker+Valid, 1764 SdHoareTripleChecker+Invalid, 614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 532 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-23 12:45:59,797 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5780 Valid, 1764 Invalid, 614 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 532 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-23 12:45:59,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2556 states. [2021-11-23 12:45:59,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2556 to 2531. [2021-11-23 12:45:59,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2531 states, 2530 states have (on average 1.2375494071146245) internal successors, (3131), 2530 states have internal predecessors, (3131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:46:00,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2531 states to 2531 states and 3131 transitions. [2021-11-23 12:46:00,010 INFO L78 Accepts]: Start accepts. Automaton has 2531 states and 3131 transitions. Word has length 669 [2021-11-23 12:46:00,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:46:00,012 INFO L470 AbstractCegarLoop]: Abstraction has 2531 states and 3131 transitions. [2021-11-23 12:46:00,012 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 45 states have (on average 7.288888888888889) internal successors, (328), 45 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:46:00,012 INFO L276 IsEmpty]: Start isEmpty. Operand 2531 states and 3131 transitions. [2021-11-23 12:46:00,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 778 [2021-11-23 12:46:00,025 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:46:00,026 INFO L514 BasicCegarLoop]: trace histogram [23, 22, 22, 22, 22, 22, 21, 21, 21, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:46:00,077 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a73407-7dca-4bb9-bce0-8d4053266167/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2021-11-23 12:46:00,239 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a73407-7dca-4bb9-bce0-8d4053266167/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-11-23 12:46:00,240 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)] === [2021-11-23 12:46:00,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:46:00,241 INFO L85 PathProgramCache]: Analyzing trace with hash 1404337883, now seen corresponding path program 2 times [2021-11-23 12:46:00,241 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:46:00,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246488367] [2021-11-23 12:46:00,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:46:00,241 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:46:00,280 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 12:46:00,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [912374923] [2021-11-23 12:46:00,281 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-23 12:46:00,281 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:46:00,281 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a73407-7dca-4bb9-bce0-8d4053266167/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:46:00,286 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a73407-7dca-4bb9-bce0-8d4053266167/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 12:46:00,315 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a73407-7dca-4bb9-bce0-8d4053266167/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-11-23 12:46:00,870 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-23 12:46:00,871 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 12:46:00,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 2322 conjuncts, 47 conjunts are in the unsatisfiable core [2021-11-23 12:46:00,900 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:46:03,496 INFO L134 CoverageAnalysis]: Checked inductivity of 4618 backedges. 0 proven. 2081 refuted. 0 times theorem prover too weak. 2537 trivial. 0 not checked. [2021-11-23 12:46:03,496 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:46:07,302 INFO L134 CoverageAnalysis]: Checked inductivity of 4618 backedges. 0 proven. 2081 refuted. 0 times theorem prover too weak. 2537 trivial. 0 not checked. [2021-11-23 12:46:07,302 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:46:07,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246488367] [2021-11-23 12:46:07,303 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 12:46:07,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [912374923] [2021-11-23 12:46:07,303 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [912374923] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 12:46:07,303 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-23 12:46:07,304 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46] total 92 [2021-11-23 12:46:07,304 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676031978] [2021-11-23 12:46:07,304 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-23 12:46:07,306 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 94 states [2021-11-23 12:46:07,306 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:46:07,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2021-11-23 12:46:07,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2255, Invalid=6487, Unknown=0, NotChecked=0, Total=8742 [2021-11-23 12:46:07,312 INFO L87 Difference]: Start difference. First operand 2531 states and 3131 transitions. Second operand has 94 states, 93 states have (on average 5.849462365591398) internal successors, (544), 93 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:46:14,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:46:14,781 INFO L93 Difference]: Finished difference Result 4189 states and 5292 transitions. [2021-11-23 12:46:14,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 140 states. [2021-11-23 12:46:14,782 INFO L78 Accepts]: Start accepts. Automaton has has 94 states, 93 states have (on average 5.849462365591398) internal successors, (544), 93 states have internal predecessors, (544), 0 states have call successors, (0), 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 777 [2021-11-23 12:46:14,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:46:14,811 INFO L225 Difference]: With dead ends: 4189 [2021-11-23 12:46:14,811 INFO L226 Difference]: Without dead ends: 4188 [2021-11-23 12:46:14,825 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1643 GetRequests, 1460 SyntacticMatches, 0 SemanticMatches, 183 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7507 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=10809, Invalid=23231, Unknown=0, NotChecked=0, Total=34040 [2021-11-23 12:46:14,826 INFO L933 BasicCegarLoop]: 142 mSDtfsCounter, 11299 mSDsluCounter, 3836 mSDsCounter, 0 mSdLazyCounter, 1120 mSolverCounterSat, 154 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11299 SdHoareTripleChecker+Valid, 3978 SdHoareTripleChecker+Invalid, 1274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 154 IncrementalHoareTripleChecker+Valid, 1120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-23 12:46:14,826 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11299 Valid, 3978 Invalid, 1274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [154 Valid, 1120 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-23 12:46:14,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4188 states. [2021-11-23 12:46:15,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4188 to 4163. [2021-11-23 12:46:15,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4163 states, 4162 states have (on average 1.2597308986064393) internal successors, (5243), 4162 states have internal predecessors, (5243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:46:15,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4163 states to 4163 states and 5243 transitions. [2021-11-23 12:46:15,059 INFO L78 Accepts]: Start accepts. Automaton has 4163 states and 5243 transitions. Word has length 777 [2021-11-23 12:46:15,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:46:15,061 INFO L470 AbstractCegarLoop]: Abstraction has 4163 states and 5243 transitions. [2021-11-23 12:46:15,061 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 94 states, 93 states have (on average 5.849462365591398) internal successors, (544), 93 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:46:15,062 INFO L276 IsEmpty]: Start isEmpty. Operand 4163 states and 5243 transitions. [2021-11-23 12:46:15,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 994 [2021-11-23 12:46:15,081 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:46:15,082 INFO L514 BasicCegarLoop]: trace histogram [47, 46, 46, 46, 46, 46, 45, 45, 45, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:46:15,120 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a73407-7dca-4bb9-bce0-8d4053266167/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2021-11-23 12:46:15,299 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a73407-7dca-4bb9-bce0-8d4053266167/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:46:15,300 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)] === [2021-11-23 12:46:15,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:46:15,301 INFO L85 PathProgramCache]: Analyzing trace with hash 1134975963, now seen corresponding path program 3 times [2021-11-23 12:46:15,301 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:46:15,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751939748] [2021-11-23 12:46:15,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:46:15,301 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:46:15,340 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 12:46:15,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2047874688] [2021-11-23 12:46:15,341 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-23 12:46:15,341 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:46:15,341 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a73407-7dca-4bb9-bce0-8d4053266167/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:46:15,345 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a73407-7dca-4bb9-bce0-8d4053266167/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 12:46:15,346 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a73407-7dca-4bb9-bce0-8d4053266167/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-11-23 12:46:15,609 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-23 12:46:15,609 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 12:46:15,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-23 12:46:15,626 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:46:17,071 INFO L134 CoverageAnalysis]: Checked inductivity of 11854 backedges. 272 proven. 0 refuted. 0 times theorem prover too weak. 11582 trivial. 0 not checked. [2021-11-23 12:46:17,071 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 12:46:17,071 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:46:17,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751939748] [2021-11-23 12:46:17,071 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 12:46:17,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2047874688] [2021-11-23 12:46:17,072 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2047874688] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:46:17,072 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:46:17,073 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 12:46:17,073 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290129060] [2021-11-23 12:46:17,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:46:17,074 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 12:46:17,074 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:46:17,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 12:46:17,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-23 12:46:17,075 INFO L87 Difference]: Start difference. First operand 4163 states and 5243 transitions. Second operand has 6 states, 5 states have (on average 18.0) internal successors, (90), 6 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:46:17,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:46:17,575 INFO L93 Difference]: Finished difference Result 7479 states and 9459 transitions. [2021-11-23 12:46:17,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 12:46:17,586 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 18.0) internal successors, (90), 6 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 993 [2021-11-23 12:46:17,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:46:17,662 INFO L225 Difference]: With dead ends: 7479 [2021-11-23 12:46:17,662 INFO L226 Difference]: Without dead ends: 7478 [2021-11-23 12:46:17,666 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1001 GetRequests, 992 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-11-23 12:46:17,667 INFO L933 BasicCegarLoop]: 131 mSDtfsCounter, 241 mSDsluCounter, 292 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 423 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 12:46:17,674 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [241 Valid, 423 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 12:46:17,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7478 states. [2021-11-23 12:46:17,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7478 to 5497. [2021-11-23 12:46:17,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5497 states, 5496 states have (on average 1.278566229985444) internal successors, (7027), 5496 states have internal predecessors, (7027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:46:18,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5497 states to 5497 states and 7027 transitions. [2021-11-23 12:46:18,007 INFO L78 Accepts]: Start accepts. Automaton has 5497 states and 7027 transitions. Word has length 993 [2021-11-23 12:46:18,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:46:18,010 INFO L470 AbstractCegarLoop]: Abstraction has 5497 states and 7027 transitions. [2021-11-23 12:46:18,010 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 18.0) internal successors, (90), 6 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:46:18,010 INFO L276 IsEmpty]: Start isEmpty. Operand 5497 states and 7027 transitions. [2021-11-23 12:46:18,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 996 [2021-11-23 12:46:18,075 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:46:18,076 INFO L514 BasicCegarLoop]: trace histogram [47, 46, 46, 46, 46, 46, 44, 44, 44, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:46:18,124 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a73407-7dca-4bb9-bce0-8d4053266167/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2021-11-23 12:46:18,287 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a73407-7dca-4bb9-bce0-8d4053266167/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:46:18,288 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)] === [2021-11-23 12:46:18,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:46:18,289 INFO L85 PathProgramCache]: Analyzing trace with hash -2131856867, now seen corresponding path program 1 times [2021-11-23 12:46:18,289 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:46:18,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205642109] [2021-11-23 12:46:18,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:46:18,289 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:46:18,322 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 12:46:18,322 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1709296759] [2021-11-23 12:46:18,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:46:18,323 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:46:18,323 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a73407-7dca-4bb9-bce0-8d4053266167/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:46:18,324 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a73407-7dca-4bb9-bce0-8d4053266167/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 12:46:18,340 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a73407-7dca-4bb9-bce0-8d4053266167/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2021-11-23 12:46:19,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:46:19,173 INFO L263 TraceCheckSpWp]: Trace formula consists of 3118 conjuncts, 95 conjunts are in the unsatisfiable core [2021-11-23 12:46:19,190 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:46:24,523 INFO L134 CoverageAnalysis]: Checked inductivity of 11767 backedges. 0 proven. 9230 refuted. 0 times theorem prover too weak. 2537 trivial. 0 not checked. [2021-11-23 12:46:24,523 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:46:34,413 INFO L134 CoverageAnalysis]: Checked inductivity of 11767 backedges. 0 proven. 9230 refuted. 0 times theorem prover too weak. 2537 trivial. 0 not checked. [2021-11-23 12:46:34,413 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:46:34,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205642109] [2021-11-23 12:46:34,413 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 12:46:34,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1709296759] [2021-11-23 12:46:34,414 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1709296759] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 12:46:34,415 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-23 12:46:34,416 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [94, 94] total 188 [2021-11-23 12:46:34,416 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833042127] [2021-11-23 12:46:34,416 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-23 12:46:34,419 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 190 states [2021-11-23 12:46:34,419 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:46:34,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 190 interpolants. [2021-11-23 12:46:34,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9119, Invalid=26791, Unknown=0, NotChecked=0, Total=35910 [2021-11-23 12:46:34,432 INFO L87 Difference]: Start difference. First operand 5497 states and 7027 transitions. Second operand has 190 states, 189 states have (on average 5.185185185185185) internal successors, (980), 189 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:47:20,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:47:20,816 INFO L93 Difference]: Finished difference Result 10249 states and 13266 transitions. [2021-11-23 12:47:20,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 284 states. [2021-11-23 12:47:20,817 INFO L78 Accepts]: Start accepts. Automaton has has 190 states, 189 states have (on average 5.185185185185185) internal successors, (980), 189 states have internal predecessors, (980), 0 states have call successors, (0), 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 995 [2021-11-23 12:47:20,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:47:20,845 INFO L225 Difference]: With dead ends: 10249 [2021-11-23 12:47:20,846 INFO L226 Difference]: Without dead ends: 10248 [2021-11-23 12:47:20,867 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2175 GetRequests, 1800 SyntacticMatches, 0 SemanticMatches, 375 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32251 ImplicationChecksByTransitivity, 24.7s TimeCoverageRelationStatistics Valid=44649, Invalid=97103, Unknown=0, NotChecked=0, Total=141752 [2021-11-23 12:47:20,868 INFO L933 BasicCegarLoop]: 142 mSDtfsCounter, 33340 mSDsluCounter, 6522 mSDsCounter, 0 mSdLazyCounter, 2264 mSolverCounterSat, 430 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33340 SdHoareTripleChecker+Valid, 6664 SdHoareTripleChecker+Invalid, 2694 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 430 IncrementalHoareTripleChecker+Valid, 2264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-11-23 12:47:20,868 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33340 Valid, 6664 Invalid, 2694 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [430 Valid, 2264 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-11-23 12:47:20,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10248 states. [2021-11-23 12:47:21,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10248 to 10201. [2021-11-23 12:47:21,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10201 states, 10200 states have (on average 1.2912745098039216) internal successors, (13171), 10200 states have internal predecessors, (13171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:47:21,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10201 states to 10201 states and 13171 transitions. [2021-11-23 12:47:21,323 INFO L78 Accepts]: Start accepts. Automaton has 10201 states and 13171 transitions. Word has length 995 [2021-11-23 12:47:21,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:47:21,324 INFO L470 AbstractCegarLoop]: Abstraction has 10201 states and 13171 transitions. [2021-11-23 12:47:21,325 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 190 states, 189 states have (on average 5.185185185185185) internal successors, (980), 189 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:47:21,325 INFO L276 IsEmpty]: Start isEmpty. Operand 10201 states and 13171 transitions. [2021-11-23 12:47:21,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1428 [2021-11-23 12:47:21,369 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:47:21,370 INFO L514 BasicCegarLoop]: trace histogram [95, 94, 94, 94, 94, 94, 92, 92, 92, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:47:21,424 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a73407-7dca-4bb9-bce0-8d4053266167/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2021-11-23 12:47:21,595 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a73407-7dca-4bb9-bce0-8d4053266167/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-11-23 12:47:21,596 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)] === [2021-11-23 12:47:21,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:47:21,597 INFO L85 PathProgramCache]: Analyzing trace with hash -456217571, now seen corresponding path program 2 times [2021-11-23 12:47:21,597 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:47:21,597 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665905349] [2021-11-23 12:47:21,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:47:21,597 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:47:21,644 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 12:47:21,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1972183497] [2021-11-23 12:47:21,645 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-23 12:47:21,645 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:47:21,645 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a73407-7dca-4bb9-bce0-8d4053266167/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:47:21,652 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a73407-7dca-4bb9-bce0-8d4053266167/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 12:47:21,673 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a73407-7dca-4bb9-bce0-8d4053266167/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2021-11-23 12:47:22,626 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-23 12:47:22,626 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 12:47:22,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 4702 conjuncts, 191 conjunts are in the unsatisfiable core [2021-11-23 12:47:22,683 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:47:37,126 INFO L134 CoverageAnalysis]: Checked inductivity of 41695 backedges. 0 proven. 39158 refuted. 0 times theorem prover too weak. 2537 trivial. 0 not checked. [2021-11-23 12:47:37,127 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:48:07,887 INFO L134 CoverageAnalysis]: Checked inductivity of 41695 backedges. 0 proven. 39158 refuted. 0 times theorem prover too weak. 2537 trivial. 0 not checked. [2021-11-23 12:48:07,888 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:48:07,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665905349] [2021-11-23 12:48:07,888 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 12:48:07,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1972183497] [2021-11-23 12:48:07,889 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1972183497] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 12:48:07,889 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-23 12:48:07,890 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [190, 190] total 380 [2021-11-23 12:48:07,891 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743855388] [2021-11-23 12:48:07,891 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-23 12:48:07,895 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 382 states [2021-11-23 12:48:07,895 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:48:07,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 382 interpolants. [2021-11-23 12:48:07,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36671, Invalid=108871, Unknown=0, NotChecked=0, Total=145542 [2021-11-23 12:48:07,929 INFO L87 Difference]: Start difference. First operand 10201 states and 13171 transitions. Second operand has 382 states, 381 states have (on average 4.83989501312336) internal successors, (1844), 381 states have internal predecessors, (1844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:54:43,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:54:43,974 INFO L93 Difference]: Finished difference Result 19657 states and 25602 transitions. [2021-11-23 12:54:43,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 572 states. [2021-11-23 12:54:43,975 INFO L78 Accepts]: Start accepts. Automaton has has 382 states, 381 states have (on average 4.83989501312336) internal successors, (1844), 381 states have internal predecessors, (1844), 0 states have call successors, (0), 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 1427 [2021-11-23 12:54:43,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:54:44,011 INFO L225 Difference]: With dead ends: 19657 [2021-11-23 12:54:44,011 INFO L226 Difference]: Without dead ends: 19656 [2021-11-23 12:54:44,063 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3231 GetRequests, 2472 SyntacticMatches, 0 SemanticMatches, 759 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133579 ImplicationChecksByTransitivity, 88.0s TimeCoverageRelationStatistics Valid=181449, Invalid=396911, Unknown=0, NotChecked=0, Total=578360 [2021-11-23 12:54:44,064 INFO L933 BasicCegarLoop]: 142 mSDtfsCounter, 66283 mSDsluCounter, 13199 mSDsCounter, 0 mSdLazyCounter, 4576 mSolverCounterSat, 956 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66283 SdHoareTripleChecker+Valid, 13341 SdHoareTripleChecker+Invalid, 5532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.4s SdHoareTripleChecker+Time, 956 IncrementalHoareTripleChecker+Valid, 4576 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2021-11-23 12:54:44,064 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [66283 Valid, 13341 Invalid, 5532 Unknown, 0 Unchecked, 0.4s Time], IncrementalHoareTripleChecker [956 Valid, 4576 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2021-11-23 12:54:44,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19656 states. [2021-11-23 12:54:44,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19656 to 19609. [2021-11-23 12:54:44,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19609 states, 19608 states have (on average 1.2983986128110976) internal successors, (25459), 19608 states have internal predecessors, (25459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:54:44,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19609 states to 19609 states and 25459 transitions. [2021-11-23 12:54:44,707 INFO L78 Accepts]: Start accepts. Automaton has 19609 states and 25459 transitions. Word has length 1427 [2021-11-23 12:54:44,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:54:44,709 INFO L470 AbstractCegarLoop]: Abstraction has 19609 states and 25459 transitions. [2021-11-23 12:54:44,710 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 382 states, 381 states have (on average 4.83989501312336) internal successors, (1844), 381 states have internal predecessors, (1844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:54:44,710 INFO L276 IsEmpty]: Start isEmpty. Operand 19609 states and 25459 transitions. [2021-11-23 12:54:45,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2292 [2021-11-23 12:54:45,059 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:54:45,061 INFO L514 BasicCegarLoop]: trace histogram [191, 190, 190, 190, 190, 190, 188, 188, 188, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:54:45,104 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a73407-7dca-4bb9-bce0-8d4053266167/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2021-11-23 12:54:45,261 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a73407-7dca-4bb9-bce0-8d4053266167/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-11-23 12:54:45,261 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)] === [2021-11-23 12:54:45,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:54:45,262 INFO L85 PathProgramCache]: Analyzing trace with hash 815472669, now seen corresponding path program 3 times [2021-11-23 12:54:45,262 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:54:45,263 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776080291] [2021-11-23 12:54:45,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:54:45,263 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:54:45,314 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 12:54:45,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1525735933] [2021-11-23 12:54:45,315 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-23 12:54:45,315 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:54:45,315 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a73407-7dca-4bb9-bce0-8d4053266167/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:54:45,316 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a73407-7dca-4bb9-bce0-8d4053266167/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 12:54:45,318 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a73407-7dca-4bb9-bce0-8d4053266167/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2021-11-23 12:54:45,692 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-23 12:54:45,692 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 12:54:45,697 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-23 12:54:45,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:54:48,172 INFO L134 CoverageAnalysis]: Checked inductivity of 163759 backedges. 1137 proven. 0 refuted. 0 times theorem prover too weak. 162622 trivial. 0 not checked. [2021-11-23 12:54:48,173 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 12:54:48,173 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:54:48,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776080291] [2021-11-23 12:54:48,173 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 12:54:48,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1525735933] [2021-11-23 12:54:48,174 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1525735933] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:54:48,174 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:54:48,175 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 12:54:48,175 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408789347] [2021-11-23 12:54:48,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:54:48,176 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 12:54:48,176 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:54:48,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 12:54:48,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-23 12:54:48,177 INFO L87 Difference]: Start difference. First operand 19609 states and 25459 transitions. Second operand has 6 states, 5 states have (on average 19.0) internal successors, (95), 6 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:54:49,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:54:49,130 INFO L93 Difference]: Finished difference Result 39549 states and 51049 transitions. [2021-11-23 12:54:49,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 12:54:49,131 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 19.0) internal successors, (95), 6 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2291 [2021-11-23 12:54:49,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:54:49,199 INFO L225 Difference]: With dead ends: 39549 [2021-11-23 12:54:49,199 INFO L226 Difference]: Without dead ends: 39548 [2021-11-23 12:54:49,214 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2299 GetRequests, 2290 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-11-23 12:54:49,215 INFO L933 BasicCegarLoop]: 131 mSDtfsCounter, 380 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 380 SdHoareTripleChecker+Valid, 392 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 12:54:49,215 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [380 Valid, 392 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 12:54:49,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39548 states. [2021-11-23 12:54:50,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39548 to 24859. [2021-11-23 12:54:50,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24859 states, 24858 states have (on average 1.3110065170166545) internal successors, (32589), 24858 states have internal predecessors, (32589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:54:50,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24859 states to 24859 states and 32589 transitions. [2021-11-23 12:54:50,131 INFO L78 Accepts]: Start accepts. Automaton has 24859 states and 32589 transitions. Word has length 2291 [2021-11-23 12:54:50,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:54:50,133 INFO L470 AbstractCegarLoop]: Abstraction has 24859 states and 32589 transitions. [2021-11-23 12:54:50,133 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 19.0) internal successors, (95), 6 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:54:50,134 INFO L276 IsEmpty]: Start isEmpty. Operand 24859 states and 32589 transitions. [2021-11-23 12:54:50,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2295 [2021-11-23 12:54:50,204 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:54:50,205 INFO L514 BasicCegarLoop]: trace histogram [191, 190, 190, 190, 190, 190, 187, 187, 187, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 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, 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, 1] [2021-11-23 12:54:50,243 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a73407-7dca-4bb9-bce0-8d4053266167/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2021-11-23 12:54:50,419 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a73407-7dca-4bb9-bce0-8d4053266167/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-11-23 12:54:50,420 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)] === [2021-11-23 12:54:50,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:54:50,421 INFO L85 PathProgramCache]: Analyzing trace with hash -1356308616, now seen corresponding path program 1 times [2021-11-23 12:54:50,421 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:54:50,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446334967] [2021-11-23 12:54:50,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:54:50,421 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:54:50,481 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 12:54:50,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [672092698] [2021-11-23 12:54:50,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:54:50,482 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:54:50,482 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a73407-7dca-4bb9-bce0-8d4053266167/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:54:50,483 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a73407-7dca-4bb9-bce0-8d4053266167/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 12:54:50,489 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a73407-7dca-4bb9-bce0-8d4053266167/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2021-11-23 12:54:52,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:54:52,481 INFO L263 TraceCheckSpWp]: Trace formula consists of 7876 conjuncts, 383 conjunts are in the unsatisfiable core [2021-11-23 12:54:52,512 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:55:33,109 INFO L134 CoverageAnalysis]: Checked inductivity of 163388 backedges. 0 proven. 160851 refuted. 0 times theorem prover too weak. 2537 trivial. 0 not checked. [2021-11-23 12:55:33,110 INFO L328 TraceCheckSpWp]: Computing backward predicates...