./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49ef815-f6e2-46ad-9ad5-805fdcbf0f57/bin/uautomizer-w2VwFs6gM0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49ef815-f6e2-46ad-9ad5-805fdcbf0f57/bin/uautomizer-w2VwFs6gM0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49ef815-f6e2-46ad-9ad5-805fdcbf0f57/bin/uautomizer-w2VwFs6gM0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49ef815-f6e2-46ad-9ad5-805fdcbf0f57/bin/uautomizer-w2VwFs6gM0/config/AutomizerReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49ef815-f6e2-46ad-9ad5-805fdcbf0f57/bin/uautomizer-w2VwFs6gM0/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49ef815-f6e2-46ad-9ad5-805fdcbf0f57/bin/uautomizer-w2VwFs6gM0 --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 7743788eb05cb3443d5449a0c3250a50955573eb924e62e5cc797e3ef82e3ba3 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-22 15:13:29,496 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-22 15:13:29,499 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-22 15:13:29,543 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-22 15:13:29,544 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-22 15:13:29,545 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-22 15:13:29,548 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-22 15:13:29,551 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-22 15:13:29,555 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-22 15:13:29,556 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-22 15:13:29,558 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-22 15:13:29,560 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-22 15:13:29,561 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-22 15:13:29,563 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-22 15:13:29,566 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-22 15:13:29,568 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-22 15:13:29,570 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-22 15:13:29,572 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-22 15:13:29,575 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-22 15:13:29,579 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-22 15:13:29,582 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-22 15:13:29,584 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-22 15:13:29,586 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-22 15:13:29,587 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-22 15:13:29,592 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-22 15:13:29,593 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-22 15:13:29,593 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-22 15:13:29,595 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-22 15:13:29,596 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-22 15:13:29,597 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-22 15:13:29,598 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-22 15:13:29,599 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-22 15:13:29,601 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-22 15:13:29,602 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-22 15:13:29,604 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-22 15:13:29,604 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-22 15:13:29,605 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-22 15:13:29,606 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-22 15:13:29,607 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-22 15:13:29,608 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-22 15:13:29,609 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-22 15:13:29,610 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49ef815-f6e2-46ad-9ad5-805fdcbf0f57/bin/uautomizer-w2VwFs6gM0/config/svcomp-Overflow-32bit-Automizer_Default.epf [2021-11-22 15:13:29,642 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-22 15:13:29,643 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-22 15:13:29,643 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-22 15:13:29,643 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-22 15:13:29,645 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-22 15:13:29,645 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-22 15:13:29,646 INFO L138 SettingsManager]: * Use SBE=true [2021-11-22 15:13:29,646 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-22 15:13:29,646 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-22 15:13:29,647 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-22 15:13:29,647 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-22 15:13:29,647 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-22 15:13:29,648 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-22 15:13:29,648 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-22 15:13:29,648 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-22 15:13:29,648 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-22 15:13:29,649 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-11-22 15:13:29,649 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-22 15:13:29,649 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-22 15:13:29,649 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-22 15:13:29,650 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-22 15:13:29,650 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-22 15:13:29,650 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-22 15:13:29,651 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-22 15:13:29,651 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 15:13:29,651 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-22 15:13:29,652 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-22 15:13:29,652 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-22 15:13:29,652 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-22 15:13:29,652 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-22 15:13:29,653 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-22 15:13:29,653 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-22 15:13:29,653 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_b49ef815-f6e2-46ad-9ad5-805fdcbf0f57/bin/uautomizer-w2VwFs6gM0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49ef815-f6e2-46ad-9ad5-805fdcbf0f57/bin/uautomizer-w2VwFs6gM0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7743788eb05cb3443d5449a0c3250a50955573eb924e62e5cc797e3ef82e3ba3 [2021-11-22 15:13:30,082 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-22 15:13:30,117 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-22 15:13:30,121 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-22 15:13:30,124 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-22 15:13:30,126 INFO L275 PluginConnector]: CDTParser initialized [2021-11-22 15:13:30,128 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49ef815-f6e2-46ad-9ad5-805fdcbf0f57/bin/uautomizer-w2VwFs6gM0/../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-1.i [2021-11-22 15:13:30,212 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49ef815-f6e2-46ad-9ad5-805fdcbf0f57/bin/uautomizer-w2VwFs6gM0/data/d49adbb65/6377186da069432ca3a3a3d480487e2a/FLAGe52fede1e [2021-11-22 15:13:31,016 INFO L306 CDTParser]: Found 1 translation units. [2021-11-22 15:13:31,017 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49ef815-f6e2-46ad-9ad5-805fdcbf0f57/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-1.i [2021-11-22 15:13:31,045 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49ef815-f6e2-46ad-9ad5-805fdcbf0f57/bin/uautomizer-w2VwFs6gM0/data/d49adbb65/6377186da069432ca3a3a3d480487e2a/FLAGe52fede1e [2021-11-22 15:13:31,184 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49ef815-f6e2-46ad-9ad5-805fdcbf0f57/bin/uautomizer-w2VwFs6gM0/data/d49adbb65/6377186da069432ca3a3a3d480487e2a [2021-11-22 15:13:31,187 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-22 15:13:31,189 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-22 15:13:31,191 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-22 15:13:31,192 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-22 15:13:31,197 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-22 15:13:31,198 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 03:13:31" (1/1) ... [2021-11-22 15:13:31,200 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6bca2ea3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:13:31, skipping insertion in model container [2021-11-22 15:13:31,200 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 03:13:31" (1/1) ... [2021-11-22 15:13:31,210 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-22 15:13:31,321 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-22 15:13:32,461 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_b49ef815-f6e2-46ad-9ad5-805fdcbf0f57/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-1.i[44118,44131] [2021-11-22 15:13:32,492 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_b49ef815-f6e2-46ad-9ad5-805fdcbf0f57/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-1.i[44660,44673] [2021-11-22 15:13:32,672 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_b49ef815-f6e2-46ad-9ad5-805fdcbf0f57/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-1.i[56247,56260] [2021-11-22 15:13:32,673 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_b49ef815-f6e2-46ad-9ad5-805fdcbf0f57/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-1.i[56368,56381] [2021-11-22 15:13:32,683 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 15:13:32,695 INFO L203 MainTranslator]: Completed pre-run [2021-11-22 15:13:32,775 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_b49ef815-f6e2-46ad-9ad5-805fdcbf0f57/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-1.i[44118,44131] [2021-11-22 15:13:32,785 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_b49ef815-f6e2-46ad-9ad5-805fdcbf0f57/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-1.i[44660,44673] [2021-11-22 15:13:32,914 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_b49ef815-f6e2-46ad-9ad5-805fdcbf0f57/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-1.i[56247,56260] [2021-11-22 15:13:32,916 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_b49ef815-f6e2-46ad-9ad5-805fdcbf0f57/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-1.i[56368,56381] [2021-11-22 15:13:32,932 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 15:13:33,024 INFO L208 MainTranslator]: Completed translation [2021-11-22 15:13:33,025 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:13:33 WrapperNode [2021-11-22 15:13:33,025 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-22 15:13:33,026 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-22 15:13:33,026 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-22 15:13:33,026 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-22 15:13:33,036 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:13:33" (1/1) ... [2021-11-22 15:13:33,087 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:13:33" (1/1) ... [2021-11-22 15:13:33,214 INFO L137 Inliner]: procedures = 282, calls = 294, calls flagged for inlining = 20, calls inlined = 24, statements flattened = 1187 [2021-11-22 15:13:33,242 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-22 15:13:33,242 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-22 15:13:33,243 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-22 15:13:33,243 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-22 15:13:33,254 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:13:33" (1/1) ... [2021-11-22 15:13:33,255 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:13:33" (1/1) ... [2021-11-22 15:13:33,293 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:13:33" (1/1) ... [2021-11-22 15:13:33,294 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:13:33" (1/1) ... [2021-11-22 15:13:33,415 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:13:33" (1/1) ... [2021-11-22 15:13:33,458 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:13:33" (1/1) ... [2021-11-22 15:13:33,465 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:13:33" (1/1) ... [2021-11-22 15:13:33,494 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-22 15:13:33,496 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-22 15:13:33,505 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-22 15:13:33,506 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-22 15:13:33,507 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:13:33" (1/1) ... [2021-11-22 15:13:33,517 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 15:13:33,533 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49ef815-f6e2-46ad-9ad5-805fdcbf0f57/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:13:33,555 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49ef815-f6e2-46ad-9ad5-805fdcbf0f57/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-22 15:13:33,578 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49ef815-f6e2-46ad-9ad5-805fdcbf0f57/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-22 15:13:33,626 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-22 15:13:33,626 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-22 15:13:33,626 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-22 15:13:33,627 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-22 15:13:33,627 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-22 15:13:33,627 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-22 15:13:33,627 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-22 15:13:33,628 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-22 15:13:33,628 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-22 15:13:33,628 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-22 15:13:33,628 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-22 15:13:33,629 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-22 15:13:33,883 INFO L236 CfgBuilder]: Building ICFG [2021-11-22 15:13:33,885 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-22 15:13:35,469 INFO L277 CfgBuilder]: Performing block encoding [2021-11-22 15:13:35,482 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-22 15:13:35,485 INFO L301 CfgBuilder]: Removed 63 assume(true) statements. [2021-11-22 15:13:35,492 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 03:13:35 BoogieIcfgContainer [2021-11-22 15:13:35,492 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-22 15:13:35,498 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-22 15:13:35,498 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-22 15:13:35,503 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-22 15:13:35,503 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 03:13:31" (1/3) ... [2021-11-22 15:13:35,505 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3284f96f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 03:13:35, skipping insertion in model container [2021-11-22 15:13:35,505 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:13:33" (2/3) ... [2021-11-22 15:13:35,507 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3284f96f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 03:13:35, skipping insertion in model container [2021-11-22 15:13:35,507 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 03:13:35" (3/3) ... [2021-11-22 15:13:35,514 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_SFH_test6-1.i [2021-11-22 15:13:35,523 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-22 15:13:35,524 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 28 error locations. [2021-11-22 15:13:35,610 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-22 15:13:35,621 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 [2021-11-22 15:13:35,622 INFO L340 AbstractCegarLoop]: Starting to check reachability of 28 error locations. [2021-11-22 15:13:35,667 INFO L276 IsEmpty]: Start isEmpty. Operand has 273 states, 244 states have (on average 1.680327868852459) internal successors, (410), 272 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:13:35,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-22 15:13:35,674 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:13:35,675 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:13:35,676 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2021-11-22 15:13:35,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:13:35,683 INFO L85 PathProgramCache]: Analyzing trace with hash 149889836, now seen corresponding path program 1 times [2021-11-22 15:13:35,692 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:13:35,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716902439] [2021-11-22 15:13:35,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:13:35,694 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:13:35,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:13:35,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:13:35,945 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:13:35,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716902439] [2021-11-22 15:13:35,946 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716902439] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:13:35,947 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:13:35,947 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-22 15:13:35,950 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849523151] [2021-11-22 15:13:35,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:13:35,956 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-22 15:13:35,957 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:13:35,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-22 15:13:35,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-22 15:13:36,002 INFO L87 Difference]: Start difference. First operand has 273 states, 244 states have (on average 1.680327868852459) internal successors, (410), 272 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:13:36,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:13:36,129 INFO L93 Difference]: Finished difference Result 536 states and 809 transitions. [2021-11-22 15:13:36,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-22 15:13:36,133 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 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 8 [2021-11-22 15:13:36,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:13:36,159 INFO L225 Difference]: With dead ends: 536 [2021-11-22 15:13:36,159 INFO L226 Difference]: Without dead ends: 253 [2021-11-22 15:13:36,169 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-22 15:13:36,177 INFO L933 BasicCegarLoop]: 323 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 323 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:13:36,180 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 323 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:13:36,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2021-11-22 15:13:36,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 253. [2021-11-22 15:13:36,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 227 states have (on average 1.3700440528634361) internal successors, (311), 252 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:13:36,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 311 transitions. [2021-11-22 15:13:36,285 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 311 transitions. Word has length 8 [2021-11-22 15:13:36,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:13:36,287 INFO L470 AbstractCegarLoop]: Abstraction has 253 states and 311 transitions. [2021-11-22 15:13:36,288 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:13:36,288 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 311 transitions. [2021-11-22 15:13:36,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-22 15:13:36,291 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:13:36,292 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:13:36,292 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-22 15:13:36,293 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2021-11-22 15:13:36,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:13:36,297 INFO L85 PathProgramCache]: Analyzing trace with hash 149891758, now seen corresponding path program 1 times [2021-11-22 15:13:36,297 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:13:36,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120143804] [2021-11-22 15:13:36,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:13:36,300 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:13:36,353 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 15:13:36,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1854969773] [2021-11-22 15:13:36,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:13:36,356 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:13:36,356 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49ef815-f6e2-46ad-9ad5-805fdcbf0f57/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:13:36,359 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49ef815-f6e2-46ad-9ad5-805fdcbf0f57/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 15:13:36,392 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49ef815-f6e2-46ad-9ad5-805fdcbf0f57/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-22 15:13:36,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:13:36,629 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-22 15:13:36,638 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:13:36,726 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-22 15:13:36,737 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-22 15:13:36,817 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-22 15:13:36,818 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-11-22 15:13:36,940 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 14 [2021-11-22 15:13:36,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:13:36,970 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 15:13:36,971 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:13:36,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120143804] [2021-11-22 15:13:36,971 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 15:13:36,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1854969773] [2021-11-22 15:13:36,973 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1854969773] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:13:36,974 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:13:36,975 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 15:13:36,980 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948618221] [2021-11-22 15:13:36,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:13:36,982 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-22 15:13:36,982 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:13:36,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-22 15:13:36,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-22 15:13:36,985 INFO L87 Difference]: Start difference. First operand 253 states and 311 transitions. Second operand has 6 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:13:38,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:13:38,195 INFO L93 Difference]: Finished difference Result 386 states and 482 transitions. [2021-11-22 15:13:38,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-22 15:13:38,197 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 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 8 [2021-11-22 15:13:38,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:13:38,201 INFO L225 Difference]: With dead ends: 386 [2021-11-22 15:13:38,201 INFO L226 Difference]: Without dead ends: 384 [2021-11-22 15:13:38,202 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-22 15:13:38,206 INFO L933 BasicCegarLoop]: 270 mSDtfsCounter, 259 mSDsluCounter, 931 mSDsCounter, 0 mSdLazyCounter, 400 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 259 SdHoareTripleChecker+Valid, 1201 SdHoareTripleChecker+Invalid, 418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:13:38,210 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [259 Valid, 1201 Invalid, 418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 400 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-22 15:13:38,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2021-11-22 15:13:38,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 260. [2021-11-22 15:13:38,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 234 states have (on average 1.3632478632478633) internal successors, (319), 259 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:13:38,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 319 transitions. [2021-11-22 15:13:38,253 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 319 transitions. Word has length 8 [2021-11-22 15:13:38,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:13:38,254 INFO L470 AbstractCegarLoop]: Abstraction has 260 states and 319 transitions. [2021-11-22 15:13:38,254 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:13:38,254 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 319 transitions. [2021-11-22 15:13:38,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-22 15:13:38,257 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:13:38,257 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] [2021-11-22 15:13:38,319 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49ef815-f6e2-46ad-9ad5-805fdcbf0f57/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-22 15:13:38,485 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49ef815-f6e2-46ad-9ad5-805fdcbf0f57/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:13:38,486 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2021-11-22 15:13:38,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:13:38,487 INFO L85 PathProgramCache]: Analyzing trace with hash 351079904, now seen corresponding path program 1 times [2021-11-22 15:13:38,487 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:13:38,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660573053] [2021-11-22 15:13:38,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:13:38,488 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:13:38,518 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 15:13:38,519 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [351580702] [2021-11-22 15:13:38,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:13:38,519 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:13:38,519 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49ef815-f6e2-46ad-9ad5-805fdcbf0f57/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:13:38,521 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49ef815-f6e2-46ad-9ad5-805fdcbf0f57/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 15:13:38,547 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49ef815-f6e2-46ad-9ad5-805fdcbf0f57/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-22 15:13:38,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:13:38,737 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-22 15:13:38,742 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:13:38,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:13:38,838 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 15:13:38,838 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:13:38,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660573053] [2021-11-22 15:13:38,839 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 15:13:38,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [351580702] [2021-11-22 15:13:38,839 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [351580702] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:13:38,840 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:13:38,840 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:13:38,840 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511229011] [2021-11-22 15:13:38,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:13:38,841 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:13:38,842 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:13:38,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:13:38,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:13:38,843 INFO L87 Difference]: Start difference. First operand 260 states and 319 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:13:38,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:13:38,944 INFO L93 Difference]: Finished difference Result 532 states and 659 transitions. [2021-11-22 15:13:38,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:13:38,945 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 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 44 [2021-11-22 15:13:38,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:13:38,948 INFO L225 Difference]: With dead ends: 532 [2021-11-22 15:13:38,948 INFO L226 Difference]: Without dead ends: 281 [2021-11-22 15:13:38,949 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:13:38,951 INFO L933 BasicCegarLoop]: 291 mSDtfsCounter, 9 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 567 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 [2021-11-22 15:13:38,952 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 567 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:13:38,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2021-11-22 15:13:38,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 280. [2021-11-22 15:13:38,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 254 states have (on average 1.3346456692913387) internal successors, (339), 279 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:13:38,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 339 transitions. [2021-11-22 15:13:38,970 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 339 transitions. Word has length 44 [2021-11-22 15:13:38,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:13:38,971 INFO L470 AbstractCegarLoop]: Abstraction has 280 states and 339 transitions. [2021-11-22 15:13:38,971 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:13:38,972 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 339 transitions. [2021-11-22 15:13:38,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-22 15:13:38,975 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:13:38,975 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] [2021-11-22 15:13:39,007 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49ef815-f6e2-46ad-9ad5-805fdcbf0f57/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-22 15:13:39,189 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49ef815-f6e2-46ad-9ad5-805fdcbf0f57/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:13:39,190 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2021-11-22 15:13:39,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:13:39,191 INFO L85 PathProgramCache]: Analyzing trace with hash 30874852, now seen corresponding path program 1 times [2021-11-22 15:13:39,198 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:13:39,199 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038554474] [2021-11-22 15:13:39,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:13:39,200 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:13:39,242 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 15:13:39,246 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [483002225] [2021-11-22 15:13:39,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:13:39,247 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:13:39,247 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49ef815-f6e2-46ad-9ad5-805fdcbf0f57/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:13:39,250 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49ef815-f6e2-46ad-9ad5-805fdcbf0f57/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 15:13:39,277 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49ef815-f6e2-46ad-9ad5-805fdcbf0f57/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-22 15:13:39,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:13:39,450 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-22 15:13:39,458 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:13:39,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:13:39,579 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 15:13:39,579 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:13:39,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038554474] [2021-11-22 15:13:39,580 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 15:13:39,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [483002225] [2021-11-22 15:13:39,580 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [483002225] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:13:39,581 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:13:39,581 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 15:13:39,581 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56206656] [2021-11-22 15:13:39,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:13:39,582 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:13:39,583 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:13:39,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:13:39,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:13:39,584 INFO L87 Difference]: Start difference. First operand 280 states and 339 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:13:39,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:13:39,689 INFO L93 Difference]: Finished difference Result 646 states and 790 transitions. [2021-11-22 15:13:39,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 15:13:39,690 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 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 44 [2021-11-22 15:13:39,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:13:39,693 INFO L225 Difference]: With dead ends: 646 [2021-11-22 15:13:39,693 INFO L226 Difference]: Without dead ends: 375 [2021-11-22 15:13:39,695 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:13:39,696 INFO L933 BasicCegarLoop]: 427 mSDtfsCounter, 299 mSDsluCounter, 559 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 299 SdHoareTripleChecker+Valid, 986 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:13:39,697 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [299 Valid, 986 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:13:39,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2021-11-22 15:13:39,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 266. [2021-11-22 15:13:39,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 240 states have (on average 1.325) internal successors, (318), 265 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:13:39,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 318 transitions. [2021-11-22 15:13:39,728 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 318 transitions. Word has length 44 [2021-11-22 15:13:39,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:13:39,729 INFO L470 AbstractCegarLoop]: Abstraction has 266 states and 318 transitions. [2021-11-22 15:13:39,729 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:13:39,729 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 318 transitions. [2021-11-22 15:13:39,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-22 15:13:39,732 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:13:39,732 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] [2021-11-22 15:13:39,781 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49ef815-f6e2-46ad-9ad5-805fdcbf0f57/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-22 15:13:39,949 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49ef815-f6e2-46ad-9ad5-805fdcbf0f57/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2021-11-22 15:13:39,950 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2021-11-22 15:13:39,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:13:39,951 INFO L85 PathProgramCache]: Analyzing trace with hash 1174088982, now seen corresponding path program 1 times [2021-11-22 15:13:39,951 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:13:39,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536237935] [2021-11-22 15:13:39,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:13:39,951 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:13:39,974 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 15:13:39,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1882576942] [2021-11-22 15:13:39,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:13:39,975 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:13:39,975 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49ef815-f6e2-46ad-9ad5-805fdcbf0f57/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:13:39,976 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49ef815-f6e2-46ad-9ad5-805fdcbf0f57/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 15:13:40,005 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49ef815-f6e2-46ad-9ad5-805fdcbf0f57/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-22 15:13:40,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:13:40,169 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-22 15:13:40,173 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:13:40,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:13:40,323 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 15:13:40,323 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:13:40,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536237935] [2021-11-22 15:13:40,324 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 15:13:40,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1882576942] [2021-11-22 15:13:40,324 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1882576942] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:13:40,324 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:13:40,325 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-22 15:13:40,325 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207191619] [2021-11-22 15:13:40,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:13:40,326 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:13:40,326 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:13:40,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:13:40,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:13:40,327 INFO L87 Difference]: Start difference. First operand 266 states and 318 transitions. Second operand has 4 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:13:40,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:13:40,468 INFO L93 Difference]: Finished difference Result 449 states and 540 transitions. [2021-11-22 15:13:40,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 15:13:40,468 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 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 44 [2021-11-22 15:13:40,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:13:40,472 INFO L225 Difference]: With dead ends: 449 [2021-11-22 15:13:40,472 INFO L226 Difference]: Without dead ends: 445 [2021-11-22 15:13:40,473 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:13:40,474 INFO L933 BasicCegarLoop]: 290 mSDtfsCounter, 172 mSDsluCounter, 561 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 851 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:13:40,475 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [172 Valid, 851 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:13:40,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 445 states. [2021-11-22 15:13:40,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 445 to 433. [2021-11-22 15:13:40,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 433 states, 407 states have (on average 1.307125307125307) internal successors, (532), 432 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:13:40,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 433 states to 433 states and 532 transitions. [2021-11-22 15:13:40,494 INFO L78 Accepts]: Start accepts. Automaton has 433 states and 532 transitions. Word has length 44 [2021-11-22 15:13:40,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:13:40,495 INFO L470 AbstractCegarLoop]: Abstraction has 433 states and 532 transitions. [2021-11-22 15:13:40,495 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:13:40,495 INFO L276 IsEmpty]: Start isEmpty. Operand 433 states and 532 transitions. [2021-11-22 15:13:40,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-22 15:13:40,498 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:13:40,498 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] [2021-11-22 15:13:40,547 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49ef815-f6e2-46ad-9ad5-805fdcbf0f57/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-22 15:13:40,725 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49ef815-f6e2-46ad-9ad5-805fdcbf0f57/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:13:40,726 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2021-11-22 15:13:40,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:13:40,726 INFO L85 PathProgramCache]: Analyzing trace with hash 2037020282, now seen corresponding path program 1 times [2021-11-22 15:13:40,726 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:13:40,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795059686] [2021-11-22 15:13:40,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:13:40,727 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:13:40,747 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 15:13:40,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1329002201] [2021-11-22 15:13:40,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:13:40,748 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:13:40,748 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49ef815-f6e2-46ad-9ad5-805fdcbf0f57/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:13:40,749 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49ef815-f6e2-46ad-9ad5-805fdcbf0f57/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 15:13:40,756 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49ef815-f6e2-46ad-9ad5-805fdcbf0f57/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-22 15:13:40,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:13:40,920 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-22 15:13:40,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:13:41,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:13:41,081 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 15:13:41,081 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:13:41,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795059686] [2021-11-22 15:13:41,082 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 15:13:41,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1329002201] [2021-11-22 15:13:41,082 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1329002201] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:13:41,082 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:13:41,083 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-22 15:13:41,083 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135373642] [2021-11-22 15:13:41,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:13:41,084 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:13:41,084 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:13:41,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:13:41,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:13:41,085 INFO L87 Difference]: Start difference. First operand 433 states and 532 transitions. Second operand has 4 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:13:41,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:13:41,279 INFO L93 Difference]: Finished difference Result 752 states and 934 transitions. [2021-11-22 15:13:41,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 15:13:41,280 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2021-11-22 15:13:41,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:13:41,288 INFO L225 Difference]: With dead ends: 752 [2021-11-22 15:13:41,289 INFO L226 Difference]: Without dead ends: 747 [2021-11-22 15:13:41,289 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:13:41,294 INFO L933 BasicCegarLoop]: 288 mSDtfsCounter, 237 mSDsluCounter, 557 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 845 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 15:13:41,295 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [237 Valid, 845 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 15:13:41,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 747 states. [2021-11-22 15:13:41,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 747 to 730. [2021-11-22 15:13:41,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 730 states, 704 states have (on average 1.3181818181818181) internal successors, (928), 729 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:13:41,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 730 states to 730 states and 928 transitions. [2021-11-22 15:13:41,364 INFO L78 Accepts]: Start accepts. Automaton has 730 states and 928 transitions. Word has length 45 [2021-11-22 15:13:41,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:13:41,366 INFO L470 AbstractCegarLoop]: Abstraction has 730 states and 928 transitions. [2021-11-22 15:13:41,366 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:13:41,366 INFO L276 IsEmpty]: Start isEmpty. Operand 730 states and 928 transitions. [2021-11-22 15:13:41,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-22 15:13:41,373 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:13:41,374 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] [2021-11-22 15:13:41,420 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49ef815-f6e2-46ad-9ad5-805fdcbf0f57/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-11-22 15:13:41,593 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49ef815-f6e2-46ad-9ad5-805fdcbf0f57/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:13:41,594 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2021-11-22 15:13:41,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:13:41,594 INFO L85 PathProgramCache]: Analyzing trace with hash 2020678905, now seen corresponding path program 1 times [2021-11-22 15:13:41,594 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:13:41,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471178977] [2021-11-22 15:13:41,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:13:41,595 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:13:41,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:13:41,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:13:41,714 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:13:41,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471178977] [2021-11-22 15:13:41,714 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471178977] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:13:41,716 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:13:41,716 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 15:13:41,717 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328819238] [2021-11-22 15:13:41,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:13:41,719 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:13:41,719 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:13:41,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:13:41,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:13:41,720 INFO L87 Difference]: Start difference. First operand 730 states and 928 transitions. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:13:42,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:13:42,128 INFO L93 Difference]: Finished difference Result 1182 states and 1518 transitions. [2021-11-22 15:13:42,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 15:13:42,131 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2021-11-22 15:13:42,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:13:42,137 INFO L225 Difference]: With dead ends: 1182 [2021-11-22 15:13:42,137 INFO L226 Difference]: Without dead ends: 991 [2021-11-22 15:13:42,138 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:13:42,141 INFO L933 BasicCegarLoop]: 283 mSDtfsCounter, 120 mSDsluCounter, 504 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 787 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-22 15:13:42,142 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [120 Valid, 787 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-22 15:13:42,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 991 states. [2021-11-22 15:13:42,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 991 to 730. [2021-11-22 15:13:42,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 730 states, 704 states have (on average 1.3167613636363635) internal successors, (927), 729 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) [2021-11-22 15:13:42,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 730 states to 730 states and 927 transitions. [2021-11-22 15:13:42,184 INFO L78 Accepts]: Start accepts. Automaton has 730 states and 927 transitions. Word has length 49 [2021-11-22 15:13:42,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:13:42,185 INFO L470 AbstractCegarLoop]: Abstraction has 730 states and 927 transitions. [2021-11-22 15:13:42,185 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:13:42,185 INFO L276 IsEmpty]: Start isEmpty. Operand 730 states and 927 transitions. [2021-11-22 15:13:42,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-22 15:13:42,187 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:13:42,188 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] [2021-11-22 15:13:42,188 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-22 15:13:42,189 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2021-11-22 15:13:42,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:13:42,197 INFO L85 PathProgramCache]: Analyzing trace with hash 291702918, now seen corresponding path program 1 times [2021-11-22 15:13:42,197 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:13:42,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661601485] [2021-11-22 15:13:42,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:13:42,198 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:13:42,240 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 15:13:42,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1745694391] [2021-11-22 15:13:42,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:13:42,244 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:13:42,245 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49ef815-f6e2-46ad-9ad5-805fdcbf0f57/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:13:42,250 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49ef815-f6e2-46ad-9ad5-805fdcbf0f57/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 15:13:42,274 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49ef815-f6e2-46ad-9ad5-805fdcbf0f57/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-22 15:13:42,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:13:42,421 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-22 15:13:42,425 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:13:42,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:13:42,562 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 15:13:42,562 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:13:42,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661601485] [2021-11-22 15:13:42,562 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 15:13:42,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1745694391] [2021-11-22 15:13:42,563 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1745694391] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:13:42,563 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:13:42,563 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-11-22 15:13:42,564 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629512509] [2021-11-22 15:13:42,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:13:42,565 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:13:42,565 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:13:42,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:13:42,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:13:42,566 INFO L87 Difference]: Start difference. First operand 730 states and 927 transitions. Second operand has 3 states, 2 states have (on average 25.0) internal successors, (50), 2 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:13:42,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:13:42,618 INFO L93 Difference]: Finished difference Result 760 states and 951 transitions. [2021-11-22 15:13:42,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:13:42,618 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 25.0) internal successors, (50), 2 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2021-11-22 15:13:42,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:13:42,624 INFO L225 Difference]: With dead ends: 760 [2021-11-22 15:13:42,625 INFO L226 Difference]: Without dead ends: 758 [2021-11-22 15:13:42,626 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:13:42,627 INFO L933 BasicCegarLoop]: 299 mSDtfsCounter, 181 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 589 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:13:42,628 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [181 Valid, 589 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:13:42,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 758 states. [2021-11-22 15:13:42,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 758 to 746. [2021-11-22 15:13:42,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 746 states, 720 states have (on average 1.3125) internal successors, (945), 745 states have internal predecessors, (945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:13:42,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 746 states to 746 states and 945 transitions. [2021-11-22 15:13:42,661 INFO L78 Accepts]: Start accepts. Automaton has 746 states and 945 transitions. Word has length 50 [2021-11-22 15:13:42,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:13:42,665 INFO L470 AbstractCegarLoop]: Abstraction has 746 states and 945 transitions. [2021-11-22 15:13:42,665 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 25.0) internal successors, (50), 2 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:13:42,665 INFO L276 IsEmpty]: Start isEmpty. Operand 746 states and 945 transitions. [2021-11-22 15:13:42,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-22 15:13:42,666 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:13:42,666 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] [2021-11-22 15:13:42,716 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49ef815-f6e2-46ad-9ad5-805fdcbf0f57/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-22 15:13:42,881 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49ef815-f6e2-46ad-9ad5-805fdcbf0f57/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-11-22 15:13:42,882 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2021-11-22 15:13:42,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:13:42,882 INFO L85 PathProgramCache]: Analyzing trace with hash 452856099, now seen corresponding path program 1 times [2021-11-22 15:13:42,882 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:13:42,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271782447] [2021-11-22 15:13:42,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:13:42,883 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:13:42,915 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 15:13:42,915 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1326950959] [2021-11-22 15:13:42,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:13:42,915 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:13:42,916 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49ef815-f6e2-46ad-9ad5-805fdcbf0f57/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:13:42,930 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49ef815-f6e2-46ad-9ad5-805fdcbf0f57/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 15:13:42,947 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49ef815-f6e2-46ad-9ad5-805fdcbf0f57/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-22 15:13:43,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:13:43,143 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-22 15:13:43,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:13:43,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:13:43,299 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 15:13:43,299 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:13:43,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271782447] [2021-11-22 15:13:43,299 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 15:13:43,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1326950959] [2021-11-22 15:13:43,300 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1326950959] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:13:43,300 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:13:43,300 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-11-22 15:13:43,300 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969415215] [2021-11-22 15:13:43,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:13:43,301 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:13:43,301 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:13:43,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:13:43,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:13:43,302 INFO L87 Difference]: Start difference. First operand 746 states and 945 transitions. Second operand has 3 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:13:43,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:13:43,337 INFO L93 Difference]: Finished difference Result 746 states and 945 transitions. [2021-11-22 15:13:43,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:13:43,338 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-11-22 15:13:43,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:13:43,344 INFO L225 Difference]: With dead ends: 746 [2021-11-22 15:13:43,344 INFO L226 Difference]: Without dead ends: 743 [2021-11-22 15:13:43,345 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:13:43,346 INFO L933 BasicCegarLoop]: 292 mSDtfsCounter, 248 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 292 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:13:43,347 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [248 Valid, 292 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:13:43,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 743 states. [2021-11-22 15:13:43,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 743 to 743. [2021-11-22 15:13:43,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 743 states, 720 states have (on average 1.3041666666666667) internal successors, (939), 742 states have internal predecessors, (939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:13:43,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 743 states to 743 states and 939 transitions. [2021-11-22 15:13:43,381 INFO L78 Accepts]: Start accepts. Automaton has 743 states and 939 transitions. Word has length 51 [2021-11-22 15:13:43,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:13:43,382 INFO L470 AbstractCegarLoop]: Abstraction has 743 states and 939 transitions. [2021-11-22 15:13:43,382 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:13:43,382 INFO L276 IsEmpty]: Start isEmpty. Operand 743 states and 939 transitions. [2021-11-22 15:13:43,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-22 15:13:43,383 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:13:43,383 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] [2021-11-22 15:13:43,424 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49ef815-f6e2-46ad-9ad5-805fdcbf0f57/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-11-22 15:13:43,601 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49ef815-f6e2-46ad-9ad5-805fdcbf0f57/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:13:43,602 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2021-11-22 15:13:43,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:13:43,602 INFO L85 PathProgramCache]: Analyzing trace with hash -315683993, now seen corresponding path program 1 times [2021-11-22 15:13:43,602 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:13:43,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55620399] [2021-11-22 15:13:43,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:13:43,603 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:13:43,621 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 15:13:43,621 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1592570183] [2021-11-22 15:13:43,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:13:43,621 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:13:43,621 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49ef815-f6e2-46ad-9ad5-805fdcbf0f57/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:13:43,622 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49ef815-f6e2-46ad-9ad5-805fdcbf0f57/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 15:13:43,641 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49ef815-f6e2-46ad-9ad5-805fdcbf0f57/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-22 15:13:43,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:13:43,809 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-22 15:13:43,812 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:13:44,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:13:44,012 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 15:13:44,012 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:13:44,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55620399] [2021-11-22 15:13:44,012 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 15:13:44,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1592570183] [2021-11-22 15:13:44,013 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1592570183] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:13:44,013 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:13:44,013 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 15:13:44,017 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980752217] [2021-11-22 15:13:44,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:13:44,018 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-22 15:13:44,018 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:13:44,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-22 15:13:44,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-22 15:13:44,019 INFO L87 Difference]: Start difference. First operand 743 states and 939 transitions. Second operand has 6 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:13:44,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:13:44,303 INFO L93 Difference]: Finished difference Result 1422 states and 1788 transitions. [2021-11-22 15:13:44,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-22 15:13:44,304 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2021-11-22 15:13:44,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:13:44,316 INFO L225 Difference]: With dead ends: 1422 [2021-11-22 15:13:44,316 INFO L226 Difference]: Without dead ends: 1416 [2021-11-22 15:13:44,317 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-22 15:13:44,318 INFO L933 BasicCegarLoop]: 274 mSDtfsCounter, 774 mSDsluCounter, 790 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 774 SdHoareTripleChecker+Valid, 1064 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 15:13:44,319 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [774 Valid, 1064 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 15:13:44,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1416 states. [2021-11-22 15:13:44,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1416 to 1085. [2021-11-22 15:13:44,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1085 states, 1062 states have (on average 1.283427495291902) internal successors, (1363), 1084 states have internal predecessors, (1363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:13:44,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1085 states to 1085 states and 1363 transitions. [2021-11-22 15:13:44,375 INFO L78 Accepts]: Start accepts. Automaton has 1085 states and 1363 transitions. Word has length 55 [2021-11-22 15:13:44,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:13:44,376 INFO L470 AbstractCegarLoop]: Abstraction has 1085 states and 1363 transitions. [2021-11-22 15:13:44,376 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:13:44,376 INFO L276 IsEmpty]: Start isEmpty. Operand 1085 states and 1363 transitions. [2021-11-22 15:13:44,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-22 15:13:44,377 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:13:44,378 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] [2021-11-22 15:13:44,426 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49ef815-f6e2-46ad-9ad5-805fdcbf0f57/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-11-22 15:13:44,593 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49ef815-f6e2-46ad-9ad5-805fdcbf0f57/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-22 15:13:44,594 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2021-11-22 15:13:44,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:13:44,594 INFO L85 PathProgramCache]: Analyzing trace with hash -298265703, now seen corresponding path program 1 times [2021-11-22 15:13:44,594 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:13:44,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693078895] [2021-11-22 15:13:44,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:13:44,595 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:13:44,614 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 15:13:44,614 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1712002161] [2021-11-22 15:13:44,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:13:44,615 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:13:44,615 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49ef815-f6e2-46ad-9ad5-805fdcbf0f57/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:13:44,627 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49ef815-f6e2-46ad-9ad5-805fdcbf0f57/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 15:13:44,649 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49ef815-f6e2-46ad-9ad5-805fdcbf0f57/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-22 15:13:44,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:13:44,834 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-22 15:13:44,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:13:45,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:13:45,189 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 15:13:45,190 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:13:45,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693078895] [2021-11-22 15:13:45,190 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 15:13:45,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1712002161] [2021-11-22 15:13:45,191 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1712002161] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:13:45,191 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:13:45,191 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:13:45,192 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743085519] [2021-11-22 15:13:45,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:13:45,193 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:13:45,193 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:13:45,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:13:45,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:13:45,194 INFO L87 Difference]: Start difference. First operand 1085 states and 1363 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:13:45,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:13:45,342 INFO L93 Difference]: Finished difference Result 2421 states and 3061 transitions. [2021-11-22 15:13:45,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:13:45,343 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2021-11-22 15:13:45,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:13:45,353 INFO L225 Difference]: With dead ends: 2421 [2021-11-22 15:13:45,353 INFO L226 Difference]: Without dead ends: 1345 [2021-11-22 15:13:45,355 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:13:45,356 INFO L933 BasicCegarLoop]: 341 mSDtfsCounter, 146 mSDsluCounter, 241 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 582 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:13:45,357 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [146 Valid, 582 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:13:45,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1345 states. [2021-11-22 15:13:45,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1345 to 1311. [2021-11-22 15:13:45,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1311 states, 1288 states have (on average 1.2942546583850931) internal successors, (1667), 1310 states have internal predecessors, (1667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:13:45,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1311 states to 1311 states and 1667 transitions. [2021-11-22 15:13:45,421 INFO L78 Accepts]: Start accepts. Automaton has 1311 states and 1667 transitions. Word has length 58 [2021-11-22 15:13:45,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:13:45,421 INFO L470 AbstractCegarLoop]: Abstraction has 1311 states and 1667 transitions. [2021-11-22 15:13:45,421 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:13:45,422 INFO L276 IsEmpty]: Start isEmpty. Operand 1311 states and 1667 transitions. [2021-11-22 15:13:45,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-22 15:13:45,423 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:13:45,423 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] [2021-11-22 15:13:45,466 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49ef815-f6e2-46ad-9ad5-805fdcbf0f57/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-22 15:13:45,645 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49ef815-f6e2-46ad-9ad5-805fdcbf0f57/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-11-22 15:13:45,646 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2021-11-22 15:13:45,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:13:45,646 INFO L85 PathProgramCache]: Analyzing trace with hash -279572905, now seen corresponding path program 1 times [2021-11-22 15:13:45,646 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:13:45,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273964545] [2021-11-22 15:13:45,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:13:45,647 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:13:45,672 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 15:13:45,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [364102159] [2021-11-22 15:13:45,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:13:45,675 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:13:45,676 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49ef815-f6e2-46ad-9ad5-805fdcbf0f57/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:13:45,676 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49ef815-f6e2-46ad-9ad5-805fdcbf0f57/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 15:13:45,681 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49ef815-f6e2-46ad-9ad5-805fdcbf0f57/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-22 15:13:45,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:13:45,871 INFO L263 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-22 15:13:45,874 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:13:46,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:13:46,063 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 15:13:46,063 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:13:46,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273964545] [2021-11-22 15:13:46,064 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 15:13:46,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [364102159] [2021-11-22 15:13:46,064 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [364102159] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:13:46,064 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:13:46,064 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-22 15:13:46,065 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929495599] [2021-11-22 15:13:46,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:13:46,066 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:13:46,066 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:13:46,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:13:46,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:13:46,067 INFO L87 Difference]: Start difference. First operand 1311 states and 1667 transitions. Second operand has 4 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) [2021-11-22 15:13:46,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:13:46,158 INFO L93 Difference]: Finished difference Result 1343 states and 1705 transitions. [2021-11-22 15:13:46,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 15:13:46,159 INFO L78 Accepts]: Start accepts. Automaton has has 4 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 [2021-11-22 15:13:46,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:13:46,169 INFO L225 Difference]: With dead ends: 1343 [2021-11-22 15:13:46,169 INFO L226 Difference]: Without dead ends: 1342 [2021-11-22 15:13:46,170 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:13:46,171 INFO L933 BasicCegarLoop]: 297 mSDtfsCounter, 76 mSDsluCounter, 303 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 600 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:13:46,171 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [76 Valid, 600 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:13:46,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1342 states. [2021-11-22 15:13:46,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1342 to 1339. [2021-11-22 15:13:46,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1339 states, 1316 states have (on average 1.291033434650456) internal successors, (1699), 1338 states have internal predecessors, (1699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:13:46,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1339 states to 1339 states and 1699 transitions. [2021-11-22 15:13:46,230 INFO L78 Accepts]: Start accepts. Automaton has 1339 states and 1699 transitions. Word has length 61 [2021-11-22 15:13:46,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:13:46,231 INFO L470 AbstractCegarLoop]: Abstraction has 1339 states and 1699 transitions. [2021-11-22 15:13:46,231 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 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) [2021-11-22 15:13:46,231 INFO L276 IsEmpty]: Start isEmpty. Operand 1339 states and 1699 transitions. [2021-11-22 15:13:46,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-22 15:13:46,232 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:13:46,233 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:13:46,281 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49ef815-f6e2-46ad-9ad5-805fdcbf0f57/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-22 15:13:46,446 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49ef815-f6e2-46ad-9ad5-805fdcbf0f57/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:13:46,446 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2021-11-22 15:13:46,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:13:46,447 INFO L85 PathProgramCache]: Analyzing trace with hash -1057410782, now seen corresponding path program 1 times [2021-11-22 15:13:46,447 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:13:46,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218177605] [2021-11-22 15:13:46,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:13:46,447 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:13:46,465 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 15:13:46,466 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1479270307] [2021-11-22 15:13:46,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:13:46,466 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:13:46,467 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49ef815-f6e2-46ad-9ad5-805fdcbf0f57/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:13:46,468 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49ef815-f6e2-46ad-9ad5-805fdcbf0f57/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 15:13:46,480 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49ef815-f6e2-46ad-9ad5-805fdcbf0f57/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-22 15:13:46,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:13:46,691 INFO L263 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-22 15:13:46,694 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:13:46,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:13:46,901 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 15:13:46,902 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:13:46,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218177605] [2021-11-22 15:13:46,902 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 15:13:46,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1479270307] [2021-11-22 15:13:46,903 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1479270307] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:13:46,903 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:13:46,903 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 15:13:46,903 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798154672] [2021-11-22 15:13:46,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:13:46,904 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-22 15:13:46,905 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:13:46,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-22 15:13:46,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-22 15:13:46,906 INFO L87 Difference]: Start difference. First operand 1339 states and 1699 transitions. Second operand has 6 states, 5 states have (on average 15.8) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:13:47,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:13:47,276 INFO L93 Difference]: Finished difference Result 2384 states and 3041 transitions. [2021-11-22 15:13:47,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-22 15:13:47,277 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 15.8) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2021-11-22 15:13:47,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:13:47,294 INFO L225 Difference]: With dead ends: 2384 [2021-11-22 15:13:47,294 INFO L226 Difference]: Without dead ends: 2378 [2021-11-22 15:13:47,296 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-11-22 15:13:47,297 INFO L933 BasicCegarLoop]: 653 mSDtfsCounter, 629 mSDsluCounter, 1801 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 629 SdHoareTripleChecker+Valid, 2454 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-22 15:13:47,297 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [629 Valid, 2454 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-22 15:13:47,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2378 states. [2021-11-22 15:13:47,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2378 to 1575. [2021-11-22 15:13:47,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1575 states, 1552 states have (on average 1.285438144329897) internal successors, (1995), 1574 states have internal predecessors, (1995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:13:47,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 1995 transitions. [2021-11-22 15:13:47,379 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 1995 transitions. Word has length 79 [2021-11-22 15:13:47,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:13:47,380 INFO L470 AbstractCegarLoop]: Abstraction has 1575 states and 1995 transitions. [2021-11-22 15:13:47,380 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 15.8) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:13:47,381 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 1995 transitions. [2021-11-22 15:13:47,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-22 15:13:47,382 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:13:47,382 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:13:47,430 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49ef815-f6e2-46ad-9ad5-805fdcbf0f57/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-22 15:13:47,597 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49ef815-f6e2-46ad-9ad5-805fdcbf0f57/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:13:47,598 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2021-11-22 15:13:47,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:13:47,598 INFO L85 PathProgramCache]: Analyzing trace with hash -1981621477, now seen corresponding path program 1 times [2021-11-22 15:13:47,598 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:13:47,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134140425] [2021-11-22 15:13:47,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:13:47,599 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:13:47,635 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 15:13:47,638 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1650221158] [2021-11-22 15:13:47,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:13:47,639 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:13:47,639 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49ef815-f6e2-46ad-9ad5-805fdcbf0f57/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:13:47,640 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49ef815-f6e2-46ad-9ad5-805fdcbf0f57/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 15:13:47,669 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49ef815-f6e2-46ad-9ad5-805fdcbf0f57/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-22 15:13:47,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:13:47,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-22 15:13:47,892 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:13:48,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:13:48,086 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 15:13:48,086 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:13:48,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134140425] [2021-11-22 15:13:48,087 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 15:13:48,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1650221158] [2021-11-22 15:13:48,087 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1650221158] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:13:48,087 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:13:48,088 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 15:13:48,088 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339798019] [2021-11-22 15:13:48,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:13:48,089 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 15:13:48,089 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:13:48,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 15:13:48,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:13:48,090 INFO L87 Difference]: Start difference. First operand 1575 states and 1995 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:13:48,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:13:48,368 INFO L93 Difference]: Finished difference Result 3254 states and 4137 transitions. [2021-11-22 15:13:48,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 15:13:48,369 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2021-11-22 15:13:48,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:13:48,383 INFO L225 Difference]: With dead ends: 3254 [2021-11-22 15:13:48,383 INFO L226 Difference]: Without dead ends: 1751 [2021-11-22 15:13:48,389 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-22 15:13:48,390 INFO L933 BasicCegarLoop]: 693 mSDtfsCounter, 431 mSDsluCounter, 1617 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 431 SdHoareTripleChecker+Valid, 2310 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 15:13:48,391 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [431 Valid, 2310 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 15:13:48,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1751 states. [2021-11-22 15:13:48,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1751 to 1578. [2021-11-22 15:13:48,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1578 states, 1555 states have (on average 1.2913183279742766) internal successors, (2008), 1577 states have internal predecessors, (2008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:13:48,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1578 states to 1578 states and 2008 transitions. [2021-11-22 15:13:48,473 INFO L78 Accepts]: Start accepts. Automaton has 1578 states and 2008 transitions. Word has length 81 [2021-11-22 15:13:48,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:13:48,474 INFO L470 AbstractCegarLoop]: Abstraction has 1578 states and 2008 transitions. [2021-11-22 15:13:48,474 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:13:48,474 INFO L276 IsEmpty]: Start isEmpty. Operand 1578 states and 2008 transitions. [2021-11-22 15:13:48,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-22 15:13:48,475 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:13:48,476 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:13:48,519 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49ef815-f6e2-46ad-9ad5-805fdcbf0f57/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-22 15:13:48,689 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49ef815-f6e2-46ad-9ad5-805fdcbf0f57/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-11-22 15:13:48,690 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2021-11-22 15:13:48,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:13:48,690 INFO L85 PathProgramCache]: Analyzing trace with hash 2123071426, now seen corresponding path program 1 times [2021-11-22 15:13:48,690 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:13:48,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13489219] [2021-11-22 15:13:48,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:13:48,691 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:13:48,719 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 15:13:48,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1003858157] [2021-11-22 15:13:48,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:13:48,721 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:13:48,721 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49ef815-f6e2-46ad-9ad5-805fdcbf0f57/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:13:48,722 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49ef815-f6e2-46ad-9ad5-805fdcbf0f57/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 15:13:48,749 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49ef815-f6e2-46ad-9ad5-805fdcbf0f57/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-22 15:13:49,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:13:49,140 INFO L263 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-22 15:13:49,144 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:13:49,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:13:49,393 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 15:13:49,394 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:13:49,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13489219] [2021-11-22 15:13:49,394 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 15:13:49,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1003858157] [2021-11-22 15:13:49,395 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1003858157] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:13:49,395 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:13:49,396 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-22 15:13:49,396 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372682132] [2021-11-22 15:13:49,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:13:49,397 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-22 15:13:49,397 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:13:49,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-22 15:13:49,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-22 15:13:49,398 INFO L87 Difference]: Start difference. First operand 1578 states and 2008 transitions. Second operand has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:13:50,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:13:50,398 INFO L93 Difference]: Finished difference Result 4003 states and 5133 transitions. [2021-11-22 15:13:50,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-22 15:13:50,399 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2021-11-22 15:13:50,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:13:50,418 INFO L225 Difference]: With dead ends: 4003 [2021-11-22 15:13:50,418 INFO L226 Difference]: Without dead ends: 2488 [2021-11-22 15:13:50,423 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=104, Invalid=202, Unknown=0, NotChecked=0, Total=306 [2021-11-22 15:13:50,425 INFO L933 BasicCegarLoop]: 306 mSDtfsCounter, 1411 mSDsluCounter, 1144 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1411 SdHoareTripleChecker+Valid, 1450 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-22 15:13:50,426 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1411 Valid, 1450 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-22 15:13:50,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2488 states. [2021-11-22 15:13:50,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2488 to 1584. [2021-11-22 15:13:50,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1584 states, 1561 states have (on average 1.2901985906470212) internal successors, (2014), 1583 states have internal predecessors, (2014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:13:50,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1584 states to 1584 states and 2014 transitions. [2021-11-22 15:13:50,516 INFO L78 Accepts]: Start accepts. Automaton has 1584 states and 2014 transitions. Word has length 83 [2021-11-22 15:13:50,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:13:50,516 INFO L470 AbstractCegarLoop]: Abstraction has 1584 states and 2014 transitions. [2021-11-22 15:13:50,517 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:13:50,517 INFO L276 IsEmpty]: Start isEmpty. Operand 1584 states and 2014 transitions. [2021-11-22 15:13:50,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-22 15:13:50,518 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:13:50,518 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:13:50,555 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49ef815-f6e2-46ad-9ad5-805fdcbf0f57/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-11-22 15:13:50,733 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49ef815-f6e2-46ad-9ad5-805fdcbf0f57/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-11-22 15:13:50,734 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2021-11-22 15:13:50,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:13:50,734 INFO L85 PathProgramCache]: Analyzing trace with hash -2037508069, now seen corresponding path program 1 times [2021-11-22 15:13:50,734 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:13:50,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679163856] [2021-11-22 15:13:50,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:13:50,735 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:13:50,759 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 15:13:50,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [407697262] [2021-11-22 15:13:50,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:13:50,760 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:13:50,760 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49ef815-f6e2-46ad-9ad5-805fdcbf0f57/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:13:50,761 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49ef815-f6e2-46ad-9ad5-805fdcbf0f57/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 15:13:50,785 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49ef815-f6e2-46ad-9ad5-805fdcbf0f57/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-22 15:13:51,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:13:51,121 INFO L263 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 26 conjunts are in the unsatisfiable core [2021-11-22 15:13:51,128 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:13:51,384 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:13:51,384 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:13:51,638 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:13:51,639 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:13:51,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679163856] [2021-11-22 15:13:51,639 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 15:13:51,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [407697262] [2021-11-22 15:13:51,640 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [407697262] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 15:13:51,640 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-22 15:13:51,640 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5] total 12 [2021-11-22 15:13:51,640 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58186373] [2021-11-22 15:13:51,641 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-22 15:13:51,641 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-22 15:13:51,642 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:13:51,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-22 15:13:51,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-11-22 15:13:51,643 INFO L87 Difference]: Start difference. First operand 1584 states and 2014 transitions. Second operand has 12 states, 12 states have (on average 8.583333333333334) internal successors, (103), 12 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:13:53,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:13:53,638 INFO L93 Difference]: Finished difference Result 4731 states and 6066 transitions. [2021-11-22 15:13:53,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-11-22 15:13:53,639 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.583333333333334) internal successors, (103), 12 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2021-11-22 15:13:53,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:13:53,662 INFO L225 Difference]: With dead ends: 4731 [2021-11-22 15:13:53,662 INFO L226 Difference]: Without dead ends: 3211 [2021-11-22 15:13:53,667 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=375, Invalid=885, Unknown=0, NotChecked=0, Total=1260 [2021-11-22 15:13:53,668 INFO L933 BasicCegarLoop]: 312 mSDtfsCounter, 2767 mSDsluCounter, 2410 mSDsCounter, 0 mSdLazyCounter, 468 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2767 SdHoareTripleChecker+Valid, 2722 SdHoareTripleChecker+Invalid, 561 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 468 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-22 15:13:53,669 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2767 Valid, 2722 Invalid, 561 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 468 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-22 15:13:53,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3211 states. [2021-11-22 15:13:53,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3211 to 1610. [2021-11-22 15:13:53,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1610 states, 1587 states have (on average 1.285444234404537) internal successors, (2040), 1609 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:13:53,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1610 states to 1610 states and 2040 transitions. [2021-11-22 15:13:53,807 INFO L78 Accepts]: Start accepts. Automaton has 1610 states and 2040 transitions. Word has length 84 [2021-11-22 15:13:53,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:13:53,807 INFO L470 AbstractCegarLoop]: Abstraction has 1610 states and 2040 transitions. [2021-11-22 15:13:53,808 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.583333333333334) internal successors, (103), 12 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:13:53,808 INFO L276 IsEmpty]: Start isEmpty. Operand 1610 states and 2040 transitions. [2021-11-22 15:13:53,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-22 15:13:53,809 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:13:53,810 INFO L514 BasicCegarLoop]: trace histogram [4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:13:53,857 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49ef815-f6e2-46ad-9ad5-805fdcbf0f57/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-11-22 15:13:54,021 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49ef815-f6e2-46ad-9ad5-805fdcbf0f57/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-11-22 15:13:54,022 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2021-11-22 15:13:54,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:13:54,023 INFO L85 PathProgramCache]: Analyzing trace with hash -1900832350, now seen corresponding path program 1 times [2021-11-22 15:13:54,023 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:13:54,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356371018] [2021-11-22 15:13:54,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:13:54,023 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:13:54,048 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 15:13:54,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1077311814] [2021-11-22 15:13:54,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:13:54,049 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:13:54,049 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49ef815-f6e2-46ad-9ad5-805fdcbf0f57/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:13:54,051 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49ef815-f6e2-46ad-9ad5-805fdcbf0f57/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 15:13:54,073 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49ef815-f6e2-46ad-9ad5-805fdcbf0f57/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-22 15:13:54,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:13:54,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 398 conjuncts, 29 conjunts are in the unsatisfiable core [2021-11-22 15:13:54,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:13:54,566 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-22 15:13:54,566 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:13:54,911 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-22 15:13:54,911 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:13:54,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356371018] [2021-11-22 15:13:54,911 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 15:13:54,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1077311814] [2021-11-22 15:13:54,912 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1077311814] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 15:13:54,912 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-22 15:13:54,912 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8] total 17 [2021-11-22 15:13:54,912 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510392117] [2021-11-22 15:13:54,912 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-22 15:13:54,913 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-22 15:13:54,913 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:13:54,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-22 15:13:54,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2021-11-22 15:13:54,914 INFO L87 Difference]: Start difference. First operand 1610 states and 2040 transitions. Second operand has 17 states, 17 states have (on average 6.0588235294117645) internal successors, (103), 17 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:13:58,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:13:58,958 INFO L93 Difference]: Finished difference Result 4842 states and 6213 transitions. [2021-11-22 15:13:58,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-11-22 15:13:58,959 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 6.0588235294117645) internal successors, (103), 17 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2021-11-22 15:13:58,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:13:58,980 INFO L225 Difference]: With dead ends: 4842 [2021-11-22 15:13:58,980 INFO L226 Difference]: Without dead ends: 3244 [2021-11-22 15:13:58,985 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 811 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=890, Invalid=2416, Unknown=0, NotChecked=0, Total=3306 [2021-11-22 15:13:58,986 INFO L933 BasicCegarLoop]: 321 mSDtfsCounter, 1950 mSDsluCounter, 2694 mSDsCounter, 0 mSdLazyCounter, 393 mSolverCounterSat, 173 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1950 SdHoareTripleChecker+Valid, 3015 SdHoareTripleChecker+Invalid, 566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 173 IncrementalHoareTripleChecker+Valid, 393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-22 15:13:58,986 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1950 Valid, 3015 Invalid, 566 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [173 Valid, 393 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-22 15:13:58,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3244 states. [2021-11-22 15:13:59,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3244 to 1637. [2021-11-22 15:13:59,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1637 states, 1614 states have (on average 1.2763320941759604) internal successors, (2060), 1636 states have internal predecessors, (2060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:13:59,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1637 states to 1637 states and 2060 transitions. [2021-11-22 15:13:59,091 INFO L78 Accepts]: Start accepts. Automaton has 1637 states and 2060 transitions. Word has length 89 [2021-11-22 15:13:59,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:13:59,091 INFO L470 AbstractCegarLoop]: Abstraction has 1637 states and 2060 transitions. [2021-11-22 15:13:59,091 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 6.0588235294117645) internal successors, (103), 17 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:13:59,092 INFO L276 IsEmpty]: Start isEmpty. Operand 1637 states and 2060 transitions. [2021-11-22 15:13:59,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-22 15:13:59,093 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:13:59,093 INFO L514 BasicCegarLoop]: trace histogram [10, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:13:59,135 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49ef815-f6e2-46ad-9ad5-805fdcbf0f57/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-11-22 15:13:59,309 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49ef815-f6e2-46ad-9ad5-805fdcbf0f57/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-11-22 15:13:59,310 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2021-11-22 15:13:59,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:13:59,310 INFO L85 PathProgramCache]: Analyzing trace with hash 1236929471, now seen corresponding path program 2 times [2021-11-22 15:13:59,310 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:13:59,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738427665] [2021-11-22 15:13:59,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:13:59,311 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:13:59,328 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 15:13:59,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [27034143] [2021-11-22 15:13:59,329 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-22 15:13:59,329 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:13:59,329 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49ef815-f6e2-46ad-9ad5-805fdcbf0f57/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:13:59,330 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49ef815-f6e2-46ad-9ad5-805fdcbf0f57/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 15:13:59,335 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49ef815-f6e2-46ad-9ad5-805fdcbf0f57/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process