./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test6-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2ae1291-f216-4696-b76c-aef9491c6dcb/bin/uautomizer-AkOaLMaTGY/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2ae1291-f216-4696-b76c-aef9491c6dcb/bin/uautomizer-AkOaLMaTGY/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2ae1291-f216-4696-b76c-aef9491c6dcb/bin/uautomizer-AkOaLMaTGY/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2ae1291-f216-4696-b76c-aef9491c6dcb/bin/uautomizer-AkOaLMaTGY/config/AutomizerReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test6-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2ae1291-f216-4696-b76c-aef9491c6dcb/bin/uautomizer-AkOaLMaTGY/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2ae1291-f216-4696-b76c-aef9491c6dcb/bin/uautomizer-AkOaLMaTGY --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ac848265e1daab3ca0f2905a3d0d6fdafaee38399ca7123ad8517babc999ef80 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 07:49:22,630 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 07:49:22,634 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 07:49:22,692 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 07:49:22,693 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 07:49:22,698 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 07:49:22,700 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 07:49:22,704 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 07:49:22,707 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 07:49:22,712 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 07:49:22,714 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 07:49:22,716 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 07:49:22,716 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 07:49:22,719 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 07:49:22,721 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 07:49:22,729 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 07:49:22,731 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 07:49:22,733 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 07:49:22,735 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 07:49:22,744 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 07:49:22,746 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 07:49:22,748 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 07:49:22,751 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 07:49:22,752 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 07:49:22,761 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 07:49:22,762 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 07:49:22,762 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 07:49:22,764 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 07:49:22,765 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 07:49:22,767 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 07:49:22,767 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 07:49:22,768 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 07:49:22,770 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 07:49:22,772 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 07:49:22,774 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 07:49:22,774 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 07:49:22,775 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 07:49:22,775 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 07:49:22,775 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 07:49:22,776 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 07:49:22,777 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 07:49:22,778 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2ae1291-f216-4696-b76c-aef9491c6dcb/bin/uautomizer-AkOaLMaTGY/config/svcomp-Overflow-32bit-Automizer_Default.epf [2021-11-07 07:49:22,819 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 07:49:22,820 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 07:49:22,820 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 07:49:22,821 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 07:49:22,822 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 07:49:22,823 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 07:49:22,823 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 07:49:22,823 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 07:49:22,824 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 07:49:22,824 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-07 07:49:22,825 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 07:49:22,825 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 07:49:22,826 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 07:49:22,826 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 07:49:22,826 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 07:49:22,827 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 07:49:22,827 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-11-07 07:49:22,827 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 07:49:22,827 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 07:49:22,828 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 07:49:22,828 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 07:49:22,828 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 07:49:22,828 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 07:49:22,829 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 07:49:22,829 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 07:49:22,829 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 07:49:22,829 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 07:49:22,830 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 07:49:22,830 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 07:49:22,833 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 07:49:22,833 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 07:49:22,833 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 07:49:22,833 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_c2ae1291-f216-4696-b76c-aef9491c6dcb/bin/uautomizer-AkOaLMaTGY/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2ae1291-f216-4696-b76c-aef9491c6dcb/bin/uautomizer-AkOaLMaTGY Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ac848265e1daab3ca0f2905a3d0d6fdafaee38399ca7123ad8517babc999ef80 [2021-11-07 07:49:23,117 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 07:49:23,140 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 07:49:23,143 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 07:49:23,145 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 07:49:23,147 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 07:49:23,148 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2ae1291-f216-4696-b76c-aef9491c6dcb/bin/uautomizer-AkOaLMaTGY/../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test6-1.i [2021-11-07 07:49:23,228 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2ae1291-f216-4696-b76c-aef9491c6dcb/bin/uautomizer-AkOaLMaTGY/data/94cdb8335/5b53458f80534f49bdb1c0f284d412e2/FLAG2e0ed8a47 [2021-11-07 07:49:24,018 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 07:49:24,020 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2ae1291-f216-4696-b76c-aef9491c6dcb/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test6-1.i [2021-11-07 07:49:24,050 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2ae1291-f216-4696-b76c-aef9491c6dcb/bin/uautomizer-AkOaLMaTGY/data/94cdb8335/5b53458f80534f49bdb1c0f284d412e2/FLAG2e0ed8a47 [2021-11-07 07:49:24,197 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2ae1291-f216-4696-b76c-aef9491c6dcb/bin/uautomizer-AkOaLMaTGY/data/94cdb8335/5b53458f80534f49bdb1c0f284d412e2 [2021-11-07 07:49:24,202 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 07:49:24,204 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 07:49:24,209 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 07:49:24,209 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 07:49:24,214 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 07:49:24,215 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 07:49:24" (1/1) ... [2021-11-07 07:49:24,217 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b7f367 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:49:24, skipping insertion in model container [2021-11-07 07:49:24,218 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 07:49:24" (1/1) ... [2021-11-07 07:49:24,225 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 07:49:24,305 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 07:49:24,988 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2ae1291-f216-4696-b76c-aef9491c6dcb/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test6-1.i[44118,44131] [2021-11-07 07:49:25,002 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2ae1291-f216-4696-b76c-aef9491c6dcb/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test6-1.i[44660,44673] [2021-11-07 07:49:25,144 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2ae1291-f216-4696-b76c-aef9491c6dcb/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test6-1.i[56247,56260] [2021-11-07 07:49:25,145 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2ae1291-f216-4696-b76c-aef9491c6dcb/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test6-1.i[56368,56381] [2021-11-07 07:49:25,169 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 07:49:25,180 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 07:49:25,238 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2ae1291-f216-4696-b76c-aef9491c6dcb/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test6-1.i[44118,44131] [2021-11-07 07:49:25,249 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2ae1291-f216-4696-b76c-aef9491c6dcb/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test6-1.i[44660,44673] [2021-11-07 07:49:25,367 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2ae1291-f216-4696-b76c-aef9491c6dcb/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test6-1.i[56247,56260] [2021-11-07 07:49:25,368 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2ae1291-f216-4696-b76c-aef9491c6dcb/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test6-1.i[56368,56381] [2021-11-07 07:49:25,372 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 07:49:25,450 INFO L208 MainTranslator]: Completed translation [2021-11-07 07:49:25,451 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:49:25 WrapperNode [2021-11-07 07:49:25,451 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 07:49:25,452 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 07:49:25,453 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 07:49:25,453 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 07:49:25,462 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:49:25" (1/1) ... [2021-11-07 07:49:25,536 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:49:25" (1/1) ... [2021-11-07 07:49:25,638 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 07:49:25,639 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 07:49:25,639 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 07:49:25,639 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 07:49:25,649 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:49:25" (1/1) ... [2021-11-07 07:49:25,662 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:49:25" (1/1) ... [2021-11-07 07:49:25,669 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:49:25" (1/1) ... [2021-11-07 07:49:25,670 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:49:25" (1/1) ... [2021-11-07 07:49:25,775 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:49:25" (1/1) ... [2021-11-07 07:49:25,798 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:49:25" (1/1) ... [2021-11-07 07:49:25,804 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:49:25" (1/1) ... [2021-11-07 07:49:25,816 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 07:49:25,817 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 07:49:25,817 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 07:49:25,817 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 07:49:25,818 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:49:25" (1/1) ... [2021-11-07 07:49:25,833 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 07:49:25,847 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2ae1291-f216-4696-b76c-aef9491c6dcb/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:49:25,861 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2ae1291-f216-4696-b76c-aef9491c6dcb/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 07:49:25,880 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2ae1291-f216-4696-b76c-aef9491c6dcb/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 07:49:25,916 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 07:49:25,917 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-07 07:49:25,918 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 07:49:25,918 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 07:49:25,919 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-07 07:49:25,919 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-07 07:49:25,919 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 07:49:25,920 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 07:49:25,920 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 07:49:25,921 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 07:49:25,921 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 07:49:27,521 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 07:49:27,521 INFO L299 CfgBuilder]: Removed 111 assume(true) statements. [2021-11-07 07:49:27,525 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 07:49:27 BoogieIcfgContainer [2021-11-07 07:49:27,525 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 07:49:27,527 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 07:49:27,527 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 07:49:27,531 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 07:49:27,531 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 07:49:24" (1/3) ... [2021-11-07 07:49:27,532 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@758f0d1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 07:49:27, skipping insertion in model container [2021-11-07 07:49:27,532 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:49:25" (2/3) ... [2021-11-07 07:49:27,534 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@758f0d1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 07:49:27, skipping insertion in model container [2021-11-07 07:49:27,534 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 07:49:27" (3/3) ... [2021-11-07 07:49:27,538 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_OAT_test6-1.i [2021-11-07 07:49:27,544 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 07:49:27,544 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 28 error locations. [2021-11-07 07:49:27,618 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 07:49:27,627 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 07:49:27,628 INFO L340 AbstractCegarLoop]: Starting to check reachability of 28 error locations. [2021-11-07 07:49:27,651 INFO L276 IsEmpty]: Start isEmpty. Operand has 269 states, 240 states have (on average 1.6916666666666667) internal successors, (406), 268 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:49:27,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-07 07:49:27,657 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:49:27,657 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:49:27,658 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)] === [2021-11-07 07:49:27,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:49:27,664 INFO L85 PathProgramCache]: Analyzing trace with hash 149889836, now seen corresponding path program 1 times [2021-11-07 07:49:27,673 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:49:27,674 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365010942] [2021-11-07 07:49:27,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:49:27,675 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:49:27,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:49:27,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:49:27,911 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:49:27,912 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365010942] [2021-11-07 07:49:27,913 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365010942] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:49:27,913 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:49:27,914 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 07:49:27,916 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306035209] [2021-11-07 07:49:27,921 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 07:49:27,921 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:49:27,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 07:49:27,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 07:49:27,946 INFO L87 Difference]: Start difference. First operand has 269 states, 240 states have (on average 1.6916666666666667) internal successors, (406), 268 states have internal predecessors, (406), 0 states have call successors, (0), 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) [2021-11-07 07:49:28,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:49:28,007 INFO L93 Difference]: Finished difference Result 528 states and 801 transitions. [2021-11-07 07:49:28,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 07:49:28,008 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 [2021-11-07 07:49:28,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:49:28,020 INFO L225 Difference]: With dead ends: 528 [2021-11-07 07:49:28,020 INFO L226 Difference]: Without dead ends: 249 [2021-11-07 07:49:28,024 INFO L786 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 [2021-11-07 07:49:28,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2021-11-07 07:49:28,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 249. [2021-11-07 07:49:28,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 223 states have (on average 1.3766816143497758) internal successors, (307), 248 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:49:28,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 307 transitions. [2021-11-07 07:49:28,078 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 307 transitions. Word has length 8 [2021-11-07 07:49:28,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:49:28,078 INFO L470 AbstractCegarLoop]: Abstraction has 249 states and 307 transitions. [2021-11-07 07:49:28,079 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) [2021-11-07 07:49:28,079 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 307 transitions. [2021-11-07 07:49:28,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-07 07:49:28,079 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:49:28,080 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:49:28,080 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 07:49:28,080 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)] === [2021-11-07 07:49:28,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:49:28,081 INFO L85 PathProgramCache]: Analyzing trace with hash 149891758, now seen corresponding path program 1 times [2021-11-07 07:49:28,081 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:49:28,081 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651309106] [2021-11-07 07:49:28,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:49:28,082 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:49:28,110 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 07:49:28,111 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [9205026] [2021-11-07 07:49:28,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:49:28,111 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:49:28,111 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2ae1291-f216-4696-b76c-aef9491c6dcb/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:49:28,113 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2ae1291-f216-4696-b76c-aef9491c6dcb/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:49:28,133 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2ae1291-f216-4696-b76c-aef9491c6dcb/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-07 07:49:28,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:49:28,288 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-07 07:49:28,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:49:28,379 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 [2021-11-07 07:49:28,391 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 [2021-11-07 07:49:28,462 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-07 07:49:28,463 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 [2021-11-07 07:49:28,609 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 [2021-11-07 07:49:28,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:49:28,643 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:49:28,643 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651309106] [2021-11-07 07:49:28,643 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 07:49:28,644 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [9205026] [2021-11-07 07:49:28,644 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [9205026] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:49:28,644 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:49:28,646 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 07:49:28,647 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7780419] [2021-11-07 07:49:28,648 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 07:49:28,649 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:49:28,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 07:49:28,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-07 07:49:28,650 INFO L87 Difference]: Start difference. First operand 249 states and 307 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) [2021-11-07 07:49:29,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:49:29,702 INFO L93 Difference]: Finished difference Result 382 states and 478 transitions. [2021-11-07 07:49:29,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 07:49:29,704 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 [2021-11-07 07:49:29,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:49:29,707 INFO L225 Difference]: With dead ends: 382 [2021-11-07 07:49:29,708 INFO L226 Difference]: Without dead ends: 380 [2021-11-07 07:49:29,709 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-07 07:49:29,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2021-11-07 07:49:29,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 256. [2021-11-07 07:49:29,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 230 states have (on average 1.3695652173913044) internal successors, (315), 255 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:49:29,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 315 transitions. [2021-11-07 07:49:29,741 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 315 transitions. Word has length 8 [2021-11-07 07:49:29,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:49:29,741 INFO L470 AbstractCegarLoop]: Abstraction has 256 states and 315 transitions. [2021-11-07 07:49:29,741 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) [2021-11-07 07:49:29,742 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 315 transitions. [2021-11-07 07:49:29,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-07 07:49:29,744 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:49:29,744 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:49:29,782 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2ae1291-f216-4696-b76c-aef9491c6dcb/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-07 07:49:29,971 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2ae1291-f216-4696-b76c-aef9491c6dcb/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:49:29,971 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)] === [2021-11-07 07:49:29,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:49:29,972 INFO L85 PathProgramCache]: Analyzing trace with hash 351079904, now seen corresponding path program 1 times [2021-11-07 07:49:29,972 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:49:29,972 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824892606] [2021-11-07 07:49:29,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:49:29,973 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:49:30,006 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 07:49:30,023 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [662966479] [2021-11-07 07:49:30,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:49:30,023 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:49:30,023 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2ae1291-f216-4696-b76c-aef9491c6dcb/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:49:30,030 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2ae1291-f216-4696-b76c-aef9491c6dcb/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:49:30,062 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2ae1291-f216-4696-b76c-aef9491c6dcb/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-07 07:49:30,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:49:30,221 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 07:49:30,226 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:49:30,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:49:30,353 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:49:30,353 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824892606] [2021-11-07 07:49:30,354 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 07:49:30,354 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [662966479] [2021-11-07 07:49:30,354 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [662966479] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:49:30,354 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:49:30,355 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 07:49:30,355 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526296803] [2021-11-07 07:49:30,355 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 07:49:30,356 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:49:30,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 07:49:30,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 07:49:30,357 INFO L87 Difference]: Start difference. First operand 256 states and 315 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) [2021-11-07 07:49:30,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:49:30,462 INFO L93 Difference]: Finished difference Result 524 states and 651 transitions. [2021-11-07 07:49:30,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 07:49:30,463 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 [2021-11-07 07:49:30,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:49:30,467 INFO L225 Difference]: With dead ends: 524 [2021-11-07 07:49:30,468 INFO L226 Difference]: Without dead ends: 277 [2021-11-07 07:49:30,473 INFO L786 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 [2021-11-07 07:49:30,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2021-11-07 07:49:30,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 276. [2021-11-07 07:49:30,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 250 states have (on average 1.34) internal successors, (335), 275 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:49:30,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 335 transitions. [2021-11-07 07:49:30,516 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 335 transitions. Word has length 44 [2021-11-07 07:49:30,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:49:30,517 INFO L470 AbstractCegarLoop]: Abstraction has 276 states and 335 transitions. [2021-11-07 07:49:30,517 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) [2021-11-07 07:49:30,518 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 335 transitions. [2021-11-07 07:49:30,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-07 07:49:30,519 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:49:30,520 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:49:30,546 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2ae1291-f216-4696-b76c-aef9491c6dcb/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-07 07:49:30,731 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2ae1291-f216-4696-b76c-aef9491c6dcb/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-11-07 07:49:30,731 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)] === [2021-11-07 07:49:30,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:49:30,732 INFO L85 PathProgramCache]: Analyzing trace with hash 30874852, now seen corresponding path program 1 times [2021-11-07 07:49:30,732 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:49:30,732 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711763147] [2021-11-07 07:49:30,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:49:30,733 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:49:30,787 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 07:49:30,788 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2068213435] [2021-11-07 07:49:30,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:49:30,788 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:49:30,788 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2ae1291-f216-4696-b76c-aef9491c6dcb/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:49:30,805 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2ae1291-f216-4696-b76c-aef9491c6dcb/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:49:30,810 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2ae1291-f216-4696-b76c-aef9491c6dcb/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-07 07:49:31,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:49:31,014 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 07:49:31,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:49:31,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:49:31,136 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:49:31,136 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711763147] [2021-11-07 07:49:31,136 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 07:49:31,136 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2068213435] [2021-11-07 07:49:31,137 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2068213435] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:49:31,137 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:49:31,137 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 07:49:31,138 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058896128] [2021-11-07 07:49:31,138 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 07:49:31,140 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:49:31,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 07:49:31,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 07:49:31,145 INFO L87 Difference]: Start difference. First operand 276 states and 335 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) [2021-11-07 07:49:31,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:49:31,246 INFO L93 Difference]: Finished difference Result 637 states and 781 transitions. [2021-11-07 07:49:31,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 07:49:31,246 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 [2021-11-07 07:49:31,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:49:31,249 INFO L225 Difference]: With dead ends: 637 [2021-11-07 07:49:31,249 INFO L226 Difference]: Without dead ends: 370 [2021-11-07 07:49:31,252 INFO L786 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 [2021-11-07 07:49:31,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2021-11-07 07:49:31,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 262. [2021-11-07 07:49:31,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 236 states have (on average 1.3305084745762712) internal successors, (314), 261 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:49:31,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 314 transitions. [2021-11-07 07:49:31,264 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 314 transitions. Word has length 44 [2021-11-07 07:49:31,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:49:31,265 INFO L470 AbstractCegarLoop]: Abstraction has 262 states and 314 transitions. [2021-11-07 07:49:31,265 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) [2021-11-07 07:49:31,265 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 314 transitions. [2021-11-07 07:49:31,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-07 07:49:31,270 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:49:31,270 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:49:31,304 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2ae1291-f216-4696-b76c-aef9491c6dcb/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-07 07:49:31,498 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2ae1291-f216-4696-b76c-aef9491c6dcb/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:49:31,499 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)] === [2021-11-07 07:49:31,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:49:31,499 INFO L85 PathProgramCache]: Analyzing trace with hash 1174088982, now seen corresponding path program 1 times [2021-11-07 07:49:31,500 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:49:31,500 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105520307] [2021-11-07 07:49:31,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:49:31,500 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:49:31,537 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 07:49:31,540 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1781357835] [2021-11-07 07:49:31,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:49:31,542 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:49:31,542 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2ae1291-f216-4696-b76c-aef9491c6dcb/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:49:31,549 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2ae1291-f216-4696-b76c-aef9491c6dcb/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:49:31,562 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2ae1291-f216-4696-b76c-aef9491c6dcb/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-07 07:49:31,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:49:31,721 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 07:49:31,725 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:49:31,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:49:31,886 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:49:31,886 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105520307] [2021-11-07 07:49:31,887 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 07:49:31,887 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1781357835] [2021-11-07 07:49:31,887 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1781357835] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:49:31,887 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:49:31,887 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 07:49:31,888 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956870073] [2021-11-07 07:49:31,888 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 07:49:31,888 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:49:31,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 07:49:31,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 07:49:31,889 INFO L87 Difference]: Start difference. First operand 262 states and 314 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) [2021-11-07 07:49:32,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:49:32,021 INFO L93 Difference]: Finished difference Result 444 states and 535 transitions. [2021-11-07 07:49:32,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 07:49:32,021 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 [2021-11-07 07:49:32,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:49:32,024 INFO L225 Difference]: With dead ends: 444 [2021-11-07 07:49:32,024 INFO L226 Difference]: Without dead ends: 440 [2021-11-07 07:49:32,025 INFO L786 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 [2021-11-07 07:49:32,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2021-11-07 07:49:32,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 428. [2021-11-07 07:49:32,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 428 states, 402 states have (on average 1.3109452736318408) internal successors, (527), 427 states have internal predecessors, (527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:49:32,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 527 transitions. [2021-11-07 07:49:32,040 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 527 transitions. Word has length 44 [2021-11-07 07:49:32,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:49:32,040 INFO L470 AbstractCegarLoop]: Abstraction has 428 states and 527 transitions. [2021-11-07 07:49:32,040 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) [2021-11-07 07:49:32,041 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 527 transitions. [2021-11-07 07:49:32,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-07 07:49:32,042 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:49:32,042 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:49:32,068 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2ae1291-f216-4696-b76c-aef9491c6dcb/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-07 07:49:32,255 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2ae1291-f216-4696-b76c-aef9491c6dcb/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:49:32,255 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)] === [2021-11-07 07:49:32,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:49:32,256 INFO L85 PathProgramCache]: Analyzing trace with hash 2037020282, now seen corresponding path program 1 times [2021-11-07 07:49:32,256 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:49:32,256 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655946613] [2021-11-07 07:49:32,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:49:32,256 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:49:32,274 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 07:49:32,275 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [726931072] [2021-11-07 07:49:32,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:49:32,275 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:49:32,275 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2ae1291-f216-4696-b76c-aef9491c6dcb/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:49:32,276 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2ae1291-f216-4696-b76c-aef9491c6dcb/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:49:32,279 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2ae1291-f216-4696-b76c-aef9491c6dcb/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-07 07:49:32,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:49:32,479 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 07:49:32,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:49:32,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:49:32,660 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:49:32,660 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655946613] [2021-11-07 07:49:32,661 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 07:49:32,661 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [726931072] [2021-11-07 07:49:32,661 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [726931072] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:49:32,662 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:49:32,662 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 07:49:32,664 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161961778] [2021-11-07 07:49:32,664 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 07:49:32,665 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:49:32,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 07:49:32,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 07:49:32,666 INFO L87 Difference]: Start difference. First operand 428 states and 527 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) [2021-11-07 07:49:32,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:49:32,824 INFO L93 Difference]: Finished difference Result 745 states and 927 transitions. [2021-11-07 07:49:32,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 07:49:32,825 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 [2021-11-07 07:49:32,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:49:32,829 INFO L225 Difference]: With dead ends: 745 [2021-11-07 07:49:32,829 INFO L226 Difference]: Without dead ends: 740 [2021-11-07 07:49:32,830 INFO L786 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 [2021-11-07 07:49:32,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 740 states. [2021-11-07 07:49:32,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 740 to 723. [2021-11-07 07:49:32,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 723 states, 697 states have (on average 1.321377331420373) internal successors, (921), 722 states have internal predecessors, (921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:49:32,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 723 states to 723 states and 921 transitions. [2021-11-07 07:49:32,856 INFO L78 Accepts]: Start accepts. Automaton has 723 states and 921 transitions. Word has length 45 [2021-11-07 07:49:32,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:49:32,857 INFO L470 AbstractCegarLoop]: Abstraction has 723 states and 921 transitions. [2021-11-07 07:49:32,857 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) [2021-11-07 07:49:32,857 INFO L276 IsEmpty]: Start isEmpty. Operand 723 states and 921 transitions. [2021-11-07 07:49:32,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-07 07:49:32,859 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:49:32,859 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:49:32,900 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2ae1291-f216-4696-b76c-aef9491c6dcb/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-07 07:49:33,078 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2ae1291-f216-4696-b76c-aef9491c6dcb/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-11-07 07:49:33,079 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)] === [2021-11-07 07:49:33,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:49:33,080 INFO L85 PathProgramCache]: Analyzing trace with hash -1357574344, now seen corresponding path program 1 times [2021-11-07 07:49:33,080 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:49:33,080 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599405893] [2021-11-07 07:49:33,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:49:33,080 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:49:33,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:49:33,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:49:33,154 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:49:33,154 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599405893] [2021-11-07 07:49:33,154 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599405893] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:49:33,154 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:49:33,155 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 07:49:33,155 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772828975] [2021-11-07 07:49:33,155 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 07:49:33,156 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:49:33,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 07:49:33,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 07:49:33,157 INFO L87 Difference]: Start difference. First operand 723 states and 921 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) [2021-11-07 07:49:33,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:49:33,498 INFO L93 Difference]: Finished difference Result 1171 states and 1507 transitions. [2021-11-07 07:49:33,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 07:49:33,498 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 [2021-11-07 07:49:33,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:49:33,504 INFO L225 Difference]: With dead ends: 1171 [2021-11-07 07:49:33,504 INFO L226 Difference]: Without dead ends: 982 [2021-11-07 07:49:33,505 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 07:49:33,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 982 states. [2021-11-07 07:49:33,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 982 to 723. [2021-11-07 07:49:33,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 723 states, 697 states have (on average 1.3199426111908177) internal successors, (920), 722 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:49:33,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 723 states to 723 states and 920 transitions. [2021-11-07 07:49:33,533 INFO L78 Accepts]: Start accepts. Automaton has 723 states and 920 transitions. Word has length 49 [2021-11-07 07:49:33,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:49:33,533 INFO L470 AbstractCegarLoop]: Abstraction has 723 states and 920 transitions. [2021-11-07 07:49:33,534 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) [2021-11-07 07:49:33,534 INFO L276 IsEmpty]: Start isEmpty. Operand 723 states and 920 transitions. [2021-11-07 07:49:33,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-07 07:49:33,535 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:49:33,535 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:49:33,535 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-07 07:49:33,535 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)] === [2021-11-07 07:49:33,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:49:33,536 INFO L85 PathProgramCache]: Analyzing trace with hash 290748613, now seen corresponding path program 1 times [2021-11-07 07:49:33,536 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:49:33,536 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666901238] [2021-11-07 07:49:33,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:49:33,537 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:49:33,554 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 07:49:33,554 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1078052692] [2021-11-07 07:49:33,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:49:33,555 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:49:33,555 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2ae1291-f216-4696-b76c-aef9491c6dcb/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:49:33,561 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2ae1291-f216-4696-b76c-aef9491c6dcb/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:49:33,581 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2ae1291-f216-4696-b76c-aef9491c6dcb/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-07 07:49:33,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:49:33,786 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 07:49:33,789 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:49:33,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:49:33,950 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:49:33,951 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666901238] [2021-11-07 07:49:33,951 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 07:49:33,951 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1078052692] [2021-11-07 07:49:33,951 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1078052692] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:49:33,951 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:49:33,952 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-11-07 07:49:33,952 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673700751] [2021-11-07 07:49:33,953 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 07:49:33,953 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:49:33,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 07:49:33,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 07:49:33,954 INFO L87 Difference]: Start difference. First operand 723 states and 920 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) [2021-11-07 07:49:33,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:49:33,992 INFO L93 Difference]: Finished difference Result 751 states and 942 transitions. [2021-11-07 07:49:33,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 07:49:33,993 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 [2021-11-07 07:49:33,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:49:34,002 INFO L225 Difference]: With dead ends: 751 [2021-11-07 07:49:34,002 INFO L226 Difference]: Without dead ends: 749 [2021-11-07 07:49:34,004 INFO L786 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 [2021-11-07 07:49:34,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 749 states. [2021-11-07 07:49:34,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 749 to 737. [2021-11-07 07:49:34,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 737 states, 711 states have (on average 1.3164556962025316) internal successors, (936), 736 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:49:34,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 737 states to 737 states and 936 transitions. [2021-11-07 07:49:34,033 INFO L78 Accepts]: Start accepts. Automaton has 737 states and 936 transitions. Word has length 50 [2021-11-07 07:49:34,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:49:34,035 INFO L470 AbstractCegarLoop]: Abstraction has 737 states and 936 transitions. [2021-11-07 07:49:34,035 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) [2021-11-07 07:49:34,036 INFO L276 IsEmpty]: Start isEmpty. Operand 737 states and 936 transitions. [2021-11-07 07:49:34,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-07 07:49:34,036 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:49:34,037 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:49:34,079 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2ae1291-f216-4696-b76c-aef9491c6dcb/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-07 07:49:34,250 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2ae1291-f216-4696-b76c-aef9491c6dcb/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:49:34,251 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)] === [2021-11-07 07:49:34,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:49:34,251 INFO L85 PathProgramCache]: Analyzing trace with hash 423272643, now seen corresponding path program 1 times [2021-11-07 07:49:34,252 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:49:34,252 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056309109] [2021-11-07 07:49:34,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:49:34,252 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:49:34,291 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 07:49:34,297 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [308755920] [2021-11-07 07:49:34,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:49:34,298 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:49:34,298 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2ae1291-f216-4696-b76c-aef9491c6dcb/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:49:34,299 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2ae1291-f216-4696-b76c-aef9491c6dcb/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:49:34,318 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2ae1291-f216-4696-b76c-aef9491c6dcb/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-07 07:49:34,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:49:34,513 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 07:49:34,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:49:34,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:49:34,715 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:49:34,715 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056309109] [2021-11-07 07:49:34,715 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 07:49:34,716 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [308755920] [2021-11-07 07:49:34,716 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [308755920] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:49:34,716 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:49:34,716 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-11-07 07:49:34,716 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932129409] [2021-11-07 07:49:34,717 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 07:49:34,717 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:49:34,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 07:49:34,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 07:49:34,718 INFO L87 Difference]: Start difference. First operand 737 states and 936 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) [2021-11-07 07:49:34,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:49:34,747 INFO L93 Difference]: Finished difference Result 737 states and 936 transitions. [2021-11-07 07:49:34,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 07:49:34,748 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 [2021-11-07 07:49:34,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:49:34,753 INFO L225 Difference]: With dead ends: 737 [2021-11-07 07:49:34,753 INFO L226 Difference]: Without dead ends: 734 [2021-11-07 07:49:34,754 INFO L786 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 [2021-11-07 07:49:34,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 734 states. [2021-11-07 07:49:34,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 734 to 734. [2021-11-07 07:49:34,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 734 states, 711 states have (on average 1.3080168776371308) internal successors, (930), 733 states have internal predecessors, (930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:49:34,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 734 states to 734 states and 930 transitions. [2021-11-07 07:49:34,783 INFO L78 Accepts]: Start accepts. Automaton has 734 states and 930 transitions. Word has length 51 [2021-11-07 07:49:34,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:49:34,784 INFO L470 AbstractCegarLoop]: Abstraction has 734 states and 930 transitions. [2021-11-07 07:49:34,784 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) [2021-11-07 07:49:34,784 INFO L276 IsEmpty]: Start isEmpty. Operand 734 states and 930 transitions. [2021-11-07 07:49:34,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-07 07:49:34,786 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:49:34,787 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:49:34,815 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2ae1291-f216-4696-b76c-aef9491c6dcb/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-07 07:49:34,998 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2ae1291-f216-4696-b76c-aef9491c6dcb/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:49:34,999 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)] === [2021-11-07 07:49:34,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:49:35,000 INFO L85 PathProgramCache]: Analyzing trace with hash -971613497, now seen corresponding path program 1 times [2021-11-07 07:49:35,000 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:49:35,000 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97751576] [2021-11-07 07:49:35,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:49:35,000 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:49:35,016 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 07:49:35,017 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1880292074] [2021-11-07 07:49:35,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:49:35,017 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:49:35,017 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2ae1291-f216-4696-b76c-aef9491c6dcb/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:49:35,022 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2ae1291-f216-4696-b76c-aef9491c6dcb/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:49:35,046 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2ae1291-f216-4696-b76c-aef9491c6dcb/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-07 07:49:35,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:49:35,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 07:49:35,295 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:49:35,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:49:35,502 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:49:35,502 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97751576] [2021-11-07 07:49:35,502 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 07:49:35,503 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1880292074] [2021-11-07 07:49:35,503 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1880292074] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:49:35,503 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:49:35,504 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 07:49:35,507 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729432371] [2021-11-07 07:49:35,508 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 07:49:35,508 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:49:35,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 07:49:35,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 07:49:35,509 INFO L87 Difference]: Start difference. First operand 734 states and 930 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) [2021-11-07 07:49:35,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:49:35,799 INFO L93 Difference]: Finished difference Result 1410 states and 1776 transitions. [2021-11-07 07:49:35,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 07:49:35,800 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 [2021-11-07 07:49:35,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:49:35,809 INFO L225 Difference]: With dead ends: 1410 [2021-11-07 07:49:35,809 INFO L226 Difference]: Without dead ends: 1404 [2021-11-07 07:49:35,811 INFO L786 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 [2021-11-07 07:49:35,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1404 states. [2021-11-07 07:49:35,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1404 to 1076. [2021-11-07 07:49:35,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1076 states, 1053 states have (on average 1.2858499525166192) internal successors, (1354), 1075 states have internal predecessors, (1354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:49:35,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1076 states to 1076 states and 1354 transitions. [2021-11-07 07:49:35,853 INFO L78 Accepts]: Start accepts. Automaton has 1076 states and 1354 transitions. Word has length 55 [2021-11-07 07:49:35,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:49:35,855 INFO L470 AbstractCegarLoop]: Abstraction has 1076 states and 1354 transitions. [2021-11-07 07:49:35,855 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) [2021-11-07 07:49:35,855 INFO L276 IsEmpty]: Start isEmpty. Operand 1076 states and 1354 transitions. [2021-11-07 07:49:35,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-07 07:49:35,856 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:49:35,856 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:49:35,894 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2ae1291-f216-4696-b76c-aef9491c6dcb/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-07 07:49:36,071 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2ae1291-f216-4696-b76c-aef9491c6dcb/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:49:36,071 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)] === [2021-11-07 07:49:36,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:49:36,071 INFO L85 PathProgramCache]: Analyzing trace with hash 2000761334, now seen corresponding path program 1 times [2021-11-07 07:49:36,072 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:49:36,072 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232372443] [2021-11-07 07:49:36,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:49:36,072 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:49:36,090 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 07:49:36,092 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [497011304] [2021-11-07 07:49:36,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:49:36,093 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:49:36,093 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2ae1291-f216-4696-b76c-aef9491c6dcb/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:49:36,094 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2ae1291-f216-4696-b76c-aef9491c6dcb/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:49:36,107 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2ae1291-f216-4696-b76c-aef9491c6dcb/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-07 07:49:36,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:49:36,351 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 07:49:36,354 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:49:36,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:49:36,712 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:49:36,712 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232372443] [2021-11-07 07:49:36,712 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 07:49:36,712 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [497011304] [2021-11-07 07:49:36,713 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [497011304] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:49:36,713 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:49:36,713 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 07:49:36,713 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575567859] [2021-11-07 07:49:36,714 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 07:49:36,714 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:49:36,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 07:49:36,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 07:49:36,715 INFO L87 Difference]: Start difference. First operand 1076 states and 1354 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) [2021-11-07 07:49:36,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:49:36,838 INFO L93 Difference]: Finished difference Result 2400 states and 3040 transitions. [2021-11-07 07:49:36,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 07:49:36,839 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 [2021-11-07 07:49:36,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:49:36,847 INFO L225 Difference]: With dead ends: 2400 [2021-11-07 07:49:36,847 INFO L226 Difference]: Without dead ends: 1333 [2021-11-07 07:49:36,849 INFO L786 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 [2021-11-07 07:49:36,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1333 states. [2021-11-07 07:49:36,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1333 to 1299. [2021-11-07 07:49:36,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1299 states, 1276 states have (on average 1.2970219435736676) internal successors, (1655), 1298 states have internal predecessors, (1655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:49:36,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1299 states to 1299 states and 1655 transitions. [2021-11-07 07:49:36,898 INFO L78 Accepts]: Start accepts. Automaton has 1299 states and 1655 transitions. Word has length 58 [2021-11-07 07:49:36,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:49:36,899 INFO L470 AbstractCegarLoop]: Abstraction has 1299 states and 1655 transitions. [2021-11-07 07:49:36,899 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) [2021-11-07 07:49:36,899 INFO L276 IsEmpty]: Start isEmpty. Operand 1299 states and 1655 transitions. [2021-11-07 07:49:36,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-07 07:49:36,900 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:49:36,900 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:49:36,935 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2ae1291-f216-4696-b76c-aef9491c6dcb/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-07 07:49:37,114 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2ae1291-f216-4696-b76c-aef9491c6dcb/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:49:37,115 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)] === [2021-11-07 07:49:37,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:49:37,115 INFO L85 PathProgramCache]: Analyzing trace with hash 533355926, now seen corresponding path program 1 times [2021-11-07 07:49:37,116 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:49:37,116 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653351265] [2021-11-07 07:49:37,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:49:37,116 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:49:37,136 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 07:49:37,136 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [408307710] [2021-11-07 07:49:37,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:49:37,137 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:49:37,137 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2ae1291-f216-4696-b76c-aef9491c6dcb/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:49:37,138 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2ae1291-f216-4696-b76c-aef9491c6dcb/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:49:37,149 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2ae1291-f216-4696-b76c-aef9491c6dcb/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-07 07:49:37,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:49:37,420 INFO L263 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 07:49:37,423 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:49:37,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:49:37,637 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:49:37,637 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653351265] [2021-11-07 07:49:37,637 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 07:49:37,637 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [408307710] [2021-11-07 07:49:37,637 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [408307710] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:49:37,637 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:49:37,637 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 07:49:37,638 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118043640] [2021-11-07 07:49:37,638 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 07:49:37,638 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:49:37,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 07:49:37,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 07:49:37,639 INFO L87 Difference]: Start difference. First operand 1299 states and 1655 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) [2021-11-07 07:49:37,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:49:37,680 INFO L93 Difference]: Finished difference Result 1330 states and 1692 transitions. [2021-11-07 07:49:37,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 07:49:37,680 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 [2021-11-07 07:49:37,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:49:37,687 INFO L225 Difference]: With dead ends: 1330 [2021-11-07 07:49:37,688 INFO L226 Difference]: Without dead ends: 1329 [2021-11-07 07:49:37,688 INFO L786 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 [2021-11-07 07:49:37,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1329 states. [2021-11-07 07:49:37,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1329 to 1326. [2021-11-07 07:49:37,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1326 states, 1303 states have (on average 1.293937068303914) internal successors, (1686), 1325 states have internal predecessors, (1686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:49:37,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1326 states to 1326 states and 1686 transitions. [2021-11-07 07:49:37,739 INFO L78 Accepts]: Start accepts. Automaton has 1326 states and 1686 transitions. Word has length 61 [2021-11-07 07:49:37,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:49:37,740 INFO L470 AbstractCegarLoop]: Abstraction has 1326 states and 1686 transitions. [2021-11-07 07:49:37,740 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) [2021-11-07 07:49:37,740 INFO L276 IsEmpty]: Start isEmpty. Operand 1326 states and 1686 transitions. [2021-11-07 07:49:37,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-07 07:49:37,741 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:49:37,741 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:49:37,778 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2ae1291-f216-4696-b76c-aef9491c6dcb/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-07 07:49:37,966 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2ae1291-f216-4696-b76c-aef9491c6dcb/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-11-07 07:49:37,967 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)] === [2021-11-07 07:49:37,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:49:37,967 INFO L85 PathProgramCache]: Analyzing trace with hash -403392580, now seen corresponding path program 1 times [2021-11-07 07:49:37,967 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:49:37,968 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799441277] [2021-11-07 07:49:37,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:49:37,968 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:49:38,016 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 07:49:38,017 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [285907393] [2021-11-07 07:49:38,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:49:38,017 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:49:38,017 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2ae1291-f216-4696-b76c-aef9491c6dcb/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:49:38,018 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2ae1291-f216-4696-b76c-aef9491c6dcb/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:49:38,038 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2ae1291-f216-4696-b76c-aef9491c6dcb/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-07 07:49:38,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:49:38,412 INFO L263 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 07:49:38,415 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:49:38,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:49:38,665 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:49:38,665 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799441277] [2021-11-07 07:49:38,665 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 07:49:38,665 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [285907393] [2021-11-07 07:49:38,665 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [285907393] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:49:38,666 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:49:38,666 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 07:49:38,666 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586005927] [2021-11-07 07:49:38,666 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 07:49:38,667 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:49:38,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 07:49:38,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 07:49:38,668 INFO L87 Difference]: Start difference. First operand 1326 states and 1686 transitions. Second operand has 6 states, 5 states have (on average 15.6) internal successors, (78), 6 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:49:38,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:49:38,921 INFO L93 Difference]: Finished difference Result 2363 states and 3020 transitions. [2021-11-07 07:49:38,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 07:49:38,922 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 15.6) internal successors, (78), 6 states have internal predecessors, (78), 0 states have call successors, (0), 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 78 [2021-11-07 07:49:38,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:49:38,934 INFO L225 Difference]: With dead ends: 2363 [2021-11-07 07:49:38,934 INFO L226 Difference]: Without dead ends: 2357 [2021-11-07 07:49:38,935 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-11-07 07:49:38,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2357 states. [2021-11-07 07:49:38,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2357 to 1562. [2021-11-07 07:49:38,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1562 states, 1539 states have (on average 1.2878492527615335) internal successors, (1982), 1561 states have internal predecessors, (1982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:49:38,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1562 states to 1562 states and 1982 transitions. [2021-11-07 07:49:38,996 INFO L78 Accepts]: Start accepts. Automaton has 1562 states and 1982 transitions. Word has length 78 [2021-11-07 07:49:38,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:49:38,997 INFO L470 AbstractCegarLoop]: Abstraction has 1562 states and 1982 transitions. [2021-11-07 07:49:38,997 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 15.6) internal successors, (78), 6 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:49:38,997 INFO L276 IsEmpty]: Start isEmpty. Operand 1562 states and 1982 transitions. [2021-11-07 07:49:38,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-07 07:49:38,998 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:49:38,998 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:49:39,037 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2ae1291-f216-4696-b76c-aef9491c6dcb/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-07 07:49:39,216 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2ae1291-f216-4696-b76c-aef9491c6dcb/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-11-07 07:49:39,216 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)] === [2021-11-07 07:49:39,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:49:39,217 INFO L85 PathProgramCache]: Analyzing trace with hash -620085575, now seen corresponding path program 1 times [2021-11-07 07:49:39,217 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:49:39,217 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079875325] [2021-11-07 07:49:39,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:49:39,217 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:49:39,238 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 07:49:39,238 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1179086003] [2021-11-07 07:49:39,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:49:39,239 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:49:39,239 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2ae1291-f216-4696-b76c-aef9491c6dcb/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:49:39,240 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2ae1291-f216-4696-b76c-aef9491c6dcb/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:49:39,246 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2ae1291-f216-4696-b76c-aef9491c6dcb/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-07 07:49:39,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:49:39,659 INFO L263 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 07:49:39,661 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:49:39,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:49:39,914 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:49:39,914 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079875325] [2021-11-07 07:49:39,915 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 07:49:39,915 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1179086003] [2021-11-07 07:49:39,915 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1179086003] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:49:39,915 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:49:39,915 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 07:49:39,917 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016666213] [2021-11-07 07:49:39,917 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 07:49:39,917 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:49:39,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 07:49:39,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 07:49:39,918 INFO L87 Difference]: Start difference. First operand 1562 states and 1982 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) [2021-11-07 07:49:40,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:49:40,171 INFO L93 Difference]: Finished difference Result 3225 states and 4108 transitions. [2021-11-07 07:49:40,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 07:49:40,172 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 [2021-11-07 07:49:40,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:49:40,184 INFO L225 Difference]: With dead ends: 3225 [2021-11-07 07:49:40,185 INFO L226 Difference]: Without dead ends: 1734 [2021-11-07 07:49:40,188 INFO L786 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 [2021-11-07 07:49:40,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1734 states. [2021-11-07 07:49:40,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1734 to 1563. [2021-11-07 07:49:40,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1563 states, 1540 states have (on average 1.294155844155844) internal successors, (1993), 1562 states have internal predecessors, (1993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:49:40,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1563 states to 1563 states and 1993 transitions. [2021-11-07 07:49:40,259 INFO L78 Accepts]: Start accepts. Automaton has 1563 states and 1993 transitions. Word has length 81 [2021-11-07 07:49:40,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:49:40,260 INFO L470 AbstractCegarLoop]: Abstraction has 1563 states and 1993 transitions. [2021-11-07 07:49:40,260 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) [2021-11-07 07:49:40,260 INFO L276 IsEmpty]: Start isEmpty. Operand 1563 states and 1993 transitions. [2021-11-07 07:49:40,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-07 07:49:40,263 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:49:40,263 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:49:40,302 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2ae1291-f216-4696-b76c-aef9491c6dcb/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-07 07:49:40,478 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2ae1291-f216-4696-b76c-aef9491c6dcb/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-11-07 07:49:40,479 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)] === [2021-11-07 07:49:40,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:49:40,479 INFO L85 PathProgramCache]: Analyzing trace with hash -500984517, now seen corresponding path program 1 times [2021-11-07 07:49:40,479 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:49:40,480 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667052339] [2021-11-07 07:49:40,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:49:40,480 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:49:40,501 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 07:49:40,502 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1420550348] [2021-11-07 07:49:40,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:49:40,503 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:49:40,503 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2ae1291-f216-4696-b76c-aef9491c6dcb/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:49:40,504 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2ae1291-f216-4696-b76c-aef9491c6dcb/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:49:40,525 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2ae1291-f216-4696-b76c-aef9491c6dcb/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-07 07:49:41,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:49:41,118 INFO L263 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-07 07:49:41,121 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:49:41,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:49:41,343 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:49:41,343 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667052339] [2021-11-07 07:49:41,343 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 07:49:41,344 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1420550348] [2021-11-07 07:49:41,344 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1420550348] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:49:41,344 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:49:41,344 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-07 07:49:41,344 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358316618] [2021-11-07 07:49:41,345 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 07:49:41,345 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:49:41,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 07:49:41,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-07 07:49:41,346 INFO L87 Difference]: Start difference. First operand 1563 states and 1993 transitions. Second operand has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:49:41,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:49:41,545 INFO L93 Difference]: Finished difference Result 3966 states and 5096 transitions. [2021-11-07 07:49:41,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-07 07:49:41,546 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 0 states have call successors, (0), 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 82 [2021-11-07 07:49:41,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:49:41,559 INFO L225 Difference]: With dead ends: 3966 [2021-11-07 07:49:41,559 INFO L226 Difference]: Without dead ends: 2465 [2021-11-07 07:49:41,564 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2021-11-07 07:49:41,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2465 states. [2021-11-07 07:49:41,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2465 to 1569. [2021-11-07 07:49:41,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1569 states, 1546 states have (on average 1.2930142302716687) internal successors, (1999), 1568 states have internal predecessors, (1999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:49:41,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1569 states to 1569 states and 1999 transitions. [2021-11-07 07:49:41,661 INFO L78 Accepts]: Start accepts. Automaton has 1569 states and 1999 transitions. Word has length 82 [2021-11-07 07:49:41,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:49:41,661 INFO L470 AbstractCegarLoop]: Abstraction has 1569 states and 1999 transitions. [2021-11-07 07:49:41,661 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:49:41,662 INFO L276 IsEmpty]: Start isEmpty. Operand 1569 states and 1999 transitions. [2021-11-07 07:49:41,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-07 07:49:41,663 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:49:41,663 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:49:41,706 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2ae1291-f216-4696-b76c-aef9491c6dcb/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-11-07 07:49:41,878 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2ae1291-f216-4696-b76c-aef9491c6dcb/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-11-07 07:49:41,879 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)] === [2021-11-07 07:49:41,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:49:41,879 INFO L85 PathProgramCache]: Analyzing trace with hash -5033539, now seen corresponding path program 1 times [2021-11-07 07:49:41,879 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:49:41,879 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210550172] [2021-11-07 07:49:41,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:49:41,880 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:49:41,898 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 07:49:41,900 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1919197708] [2021-11-07 07:49:41,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:49:41,900 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:49:41,900 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2ae1291-f216-4696-b76c-aef9491c6dcb/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:49:41,901 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2ae1291-f216-4696-b76c-aef9491c6dcb/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:49:41,921 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2ae1291-f216-4696-b76c-aef9491c6dcb/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-07 07:49:42,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:49:42,379 INFO L263 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-07 07:49:42,382 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:49:42,629 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:49:42,629 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:49:42,629 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210550172] [2021-11-07 07:49:42,629 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 07:49:42,629 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1919197708] [2021-11-07 07:49:42,630 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1919197708] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:49:42,630 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-07 07:49:42,630 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-11-07 07:49:42,630 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57247603] [2021-11-07 07:49:42,630 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 07:49:42,631 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:49:42,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 07:49:42,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-07 07:49:42,631 INFO L87 Difference]: Start difference. First operand 1569 states and 1999 transitions. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 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) [2021-11-07 07:49:42,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:49:42,880 INFO L93 Difference]: Finished difference Result 3979 states and 5109 transitions. [2021-11-07 07:49:42,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-07 07:49:42,880 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 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 [2021-11-07 07:49:42,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:49:42,895 INFO L225 Difference]: With dead ends: 3979 [2021-11-07 07:49:42,895 INFO L226 Difference]: Without dead ends: 2473 [2021-11-07 07:49:42,898 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2021-11-07 07:49:42,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2473 states. [2021-11-07 07:49:42,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2473 to 1575. [2021-11-07 07:49:42,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1575 states, 1552 states have (on average 1.2918814432989691) internal successors, (2005), 1574 states have internal predecessors, (2005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:49:42,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 2005 transitions. [2021-11-07 07:49:42,984 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 2005 transitions. Word has length 83 [2021-11-07 07:49:42,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:49:42,984 INFO L470 AbstractCegarLoop]: Abstraction has 1575 states and 2005 transitions. [2021-11-07 07:49:42,985 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 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) [2021-11-07 07:49:42,985 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 2005 transitions. [2021-11-07 07:49:42,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-07 07:49:42,986 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:49:42,986 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-07 07:49:43,027 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2ae1291-f216-4696-b76c-aef9491c6dcb/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-11-07 07:49:43,199 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2ae1291-f216-4696-b76c-aef9491c6dcb/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-11-07 07:49:43,200 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)] === [2021-11-07 07:49:43,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:49:43,200 INFO L85 PathProgramCache]: Analyzing trace with hash -1810422405, now seen corresponding path program 2 times [2021-11-07 07:49:43,200 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:49:43,200 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867012350] [2021-11-07 07:49:43,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:49:43,201 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:49:43,222 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 07:49:43,222 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1089567529] [2021-11-07 07:49:43,222 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 07:49:43,222 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:49:43,223 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2ae1291-f216-4696-b76c-aef9491c6dcb/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:49:43,224 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2ae1291-f216-4696-b76c-aef9491c6dcb/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:49:43,242 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2ae1291-f216-4696-b76c-aef9491c6dcb/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-07 07:49:43,864 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-07 07:49:43,864 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:49:43,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-07 07:49:43,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:49:44,084 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 07:49:44,084 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:49:44,085 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867012350] [2021-11-07 07:49:44,085 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 07:49:44,085 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1089567529] [2021-11-07 07:49:44,085 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1089567529] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:49:44,085 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:49:44,085 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 07:49:44,085 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25878890] [2021-11-07 07:49:44,086 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 07:49:44,086 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:49:44,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 07:49:44,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 07:49:44,088 INFO L87 Difference]: Start difference. First operand 1575 states and 2005 transitions. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 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) [2021-11-07 07:49:44,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:49:44,184 INFO L93 Difference]: Finished difference Result 3651 states and 4677 transitions. [2021-11-07 07:49:44,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 07:49:44,184 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 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 84 [2021-11-07 07:49:44,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:49:44,197 INFO L225 Difference]: With dead ends: 3651 [2021-11-07 07:49:44,197 INFO L226 Difference]: Without dead ends: 2154 [2021-11-07 07:49:44,200 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 07:49:44,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2154 states. [2021-11-07 07:49:44,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2154 to 1579. [2021-11-07 07:49:44,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1579 states, 1556 states have (on average 1.2911311053984575) internal successors, (2009), 1578 states have internal predecessors, (2009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:49:44,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1579 states to 1579 states and 2009 transitions. [2021-11-07 07:49:44,275 INFO L78 Accepts]: Start accepts. Automaton has 1579 states and 2009 transitions. Word has length 84 [2021-11-07 07:49:44,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:49:44,276 INFO L470 AbstractCegarLoop]: Abstraction has 1579 states and 2009 transitions. [2021-11-07 07:49:44,276 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 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) [2021-11-07 07:49:44,276 INFO L276 IsEmpty]: Start isEmpty. Operand 1579 states and 2009 transitions. [2021-11-07 07:49:44,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-07 07:49:44,277 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:49:44,278 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-07 07:49:44,320 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2ae1291-f216-4696-b76c-aef9491c6dcb/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-11-07 07:49:44,499 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2ae1291-f216-4696-b76c-aef9491c6dcb/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-11-07 07:49:44,499 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)] === [2021-11-07 07:49:44,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:49:44,500 INFO L85 PathProgramCache]: Analyzing trace with hash 1866224866, now seen corresponding path program 1 times [2021-11-07 07:49:44,500 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:49:44,500 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106061010] [2021-11-07 07:49:44,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:49:44,500 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:49:44,518 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 07:49:44,518 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1655281840] [2021-11-07 07:49:44,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:49:44,518 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:49:44,518 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2ae1291-f216-4696-b76c-aef9491c6dcb/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:49:44,519 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2ae1291-f216-4696-b76c-aef9491c6dcb/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:49:44,534 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2ae1291-f216-4696-b76c-aef9491c6dcb/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-11-07 07:49:45,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:49:45,512 INFO L263 TraceCheckSpWp]: Trace formula consists of 381 conjuncts, 31 conjunts are in the unsatisfiable core [2021-11-07 07:49:45,516 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:49:45,787 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:49:45,788 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:49:45,788 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106061010] [2021-11-07 07:49:45,788 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 07:49:45,788 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1655281840] [2021-11-07 07:49:45,788 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1655281840] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:49:45,789 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-07 07:49:45,789 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-11-07 07:49:45,789 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801079494] [2021-11-07 07:49:45,789 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-07 07:49:45,790 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:49:45,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-07 07:49:45,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-11-07 07:49:45,791 INFO L87 Difference]: Start difference. First operand 1579 states and 2009 transitions. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:49:46,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:49:46,200 INFO L93 Difference]: Finished difference Result 4665 states and 5969 transitions. [2021-11-07 07:49:46,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-07 07:49:46,201 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2021-11-07 07:49:46,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:49:46,219 INFO L225 Difference]: With dead ends: 4665 [2021-11-07 07:49:46,219 INFO L226 Difference]: Without dead ends: 3164 [2021-11-07 07:49:46,222 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=109, Invalid=491, Unknown=0, NotChecked=0, Total=600 [2021-11-07 07:49:46,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3164 states. [2021-11-07 07:49:46,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3164 to 1583. [2021-11-07 07:49:46,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1583 states, 1560 states have (on average 1.2903846153846155) internal successors, (2013), 1582 states have internal predecessors, (2013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:49:46,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1583 states to 1583 states and 2013 transitions. [2021-11-07 07:49:46,309 INFO L78 Accepts]: Start accepts. Automaton has 1583 states and 2013 transitions. Word has length 85 [2021-11-07 07:49:46,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:49:46,309 INFO L470 AbstractCegarLoop]: Abstraction has 1583 states and 2013 transitions. [2021-11-07 07:49:46,310 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:49:46,310 INFO L276 IsEmpty]: Start isEmpty. Operand 1583 states and 2013 transitions. [2021-11-07 07:49:46,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-07 07:49:46,311 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:49:46,311 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:49:46,350 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2ae1291-f216-4696-b76c-aef9491c6dcb/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-11-07 07:49:46,526 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2ae1291-f216-4696-b76c-aef9491c6dcb/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-11-07 07:49:46,527 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2021-11-07 07:49:46,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:49:46,527 INFO L85 PathProgramCache]: Analyzing trace with hash -121826725, now seen corresponding path program 2 times [2021-11-07 07:49:46,528 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:49:46,528 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820605636] [2021-11-07 07:49:46,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:49:46,528 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:49:46,548 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 07:49:46,548 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1274174620] [2021-11-07 07:49:46,548 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 07:49:46,548 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:49:46,549 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2ae1291-f216-4696-b76c-aef9491c6dcb/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:49:46,563 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2ae1291-f216-4696-b76c-aef9491c6dcb/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:49:46,570 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2ae1291-f216-4696-b76c-aef9491c6dcb/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process