./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test7-1.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_12ea9e92-1e21-4531-bdc3-70b3535bb07e/bin/uautomizer-AkOaLMaTGY/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12ea9e92-1e21-4531-bdc3-70b3535bb07e/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_12ea9e92-1e21-4531-bdc3-70b3535bb07e/bin/uautomizer-AkOaLMaTGY/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12ea9e92-1e21-4531-bdc3-70b3535bb07e/bin/uautomizer-AkOaLMaTGY/config/AutomizerReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test7-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12ea9e92-1e21-4531-bdc3-70b3535bb07e/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_12ea9e92-1e21-4531-bdc3-70b3535bb07e/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 89806bf5e92e08240ee093afcceea93b900865db28253b34ac5f2402fc0c0eb8 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 08:25:51,693 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 08:25:51,695 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 08:25:51,739 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 08:25:51,740 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 08:25:51,741 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 08:25:51,743 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 08:25:51,745 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 08:25:51,748 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 08:25:51,752 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 08:25:51,753 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 08:25:51,754 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 08:25:51,756 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 08:25:51,759 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 08:25:51,761 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 08:25:51,763 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 08:25:51,765 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 08:25:51,770 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 08:25:51,772 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 08:25:51,776 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 08:25:51,781 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 08:25:51,783 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 08:25:51,784 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 08:25:51,786 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 08:25:51,792 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 08:25:51,793 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 08:25:51,793 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 08:25:51,794 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 08:25:51,795 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 08:25:51,796 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 08:25:51,796 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 08:25:51,797 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 08:25:51,798 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 08:25:51,799 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 08:25:51,800 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 08:25:51,800 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 08:25:51,801 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 08:25:51,801 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 08:25:51,802 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 08:25:51,803 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 08:25:51,804 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 08:25:51,805 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12ea9e92-1e21-4531-bdc3-70b3535bb07e/bin/uautomizer-AkOaLMaTGY/config/svcomp-Overflow-32bit-Automizer_Default.epf [2021-11-07 08:25:51,835 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 08:25:51,835 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 08:25:51,836 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 08:25:51,836 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 08:25:51,837 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 08:25:51,838 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 08:25:51,838 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 08:25:51,838 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 08:25:51,839 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 08:25:51,839 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-07 08:25:51,839 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 08:25:51,840 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 08:25:51,846 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 08:25:51,847 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 08:25:51,847 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 08:25:51,847 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 08:25:51,847 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-11-07 08:25:51,847 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 08:25:51,848 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 08:25:51,848 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 08:25:51,848 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 08:25:51,848 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 08:25:51,848 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 08:25:51,849 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 08:25:51,849 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 08:25:51,849 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 08:25:51,849 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 08:25:51,850 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 08:25:51,850 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 08:25:51,852 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 08:25:51,852 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 08:25:51,852 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 08:25:51,852 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_12ea9e92-1e21-4531-bdc3-70b3535bb07e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12ea9e92-1e21-4531-bdc3-70b3535bb07e/bin/uautomizer-AkOaLMaTGY Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 89806bf5e92e08240ee093afcceea93b900865db28253b34ac5f2402fc0c0eb8 [2021-11-07 08:25:52,136 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 08:25:52,167 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 08:25:52,170 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 08:25:52,172 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 08:25:52,173 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 08:25:52,174 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12ea9e92-1e21-4531-bdc3-70b3535bb07e/bin/uautomizer-AkOaLMaTGY/../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test7-1.i [2021-11-07 08:25:52,240 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12ea9e92-1e21-4531-bdc3-70b3535bb07e/bin/uautomizer-AkOaLMaTGY/data/32586f49c/10348c7a21ad444c8330e197b977fd39/FLAGd5773967f [2021-11-07 08:25:52,806 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 08:25:52,807 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12ea9e92-1e21-4531-bdc3-70b3535bb07e/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test7-1.i [2021-11-07 08:25:52,823 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12ea9e92-1e21-4531-bdc3-70b3535bb07e/bin/uautomizer-AkOaLMaTGY/data/32586f49c/10348c7a21ad444c8330e197b977fd39/FLAGd5773967f [2021-11-07 08:25:53,046 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12ea9e92-1e21-4531-bdc3-70b3535bb07e/bin/uautomizer-AkOaLMaTGY/data/32586f49c/10348c7a21ad444c8330e197b977fd39 [2021-11-07 08:25:53,049 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 08:25:53,051 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 08:25:53,065 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 08:25:53,065 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 08:25:53,068 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 08:25:53,069 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:25:53" (1/1) ... [2021-11-07 08:25:53,070 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@952406a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:25:53, skipping insertion in model container [2021-11-07 08:25:53,070 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:25:53" (1/1) ... [2021-11-07 08:25:53,078 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 08:25:53,136 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 08:25:53,524 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_12ea9e92-1e21-4531-bdc3-70b3535bb07e/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test7-1.i[33021,33034] [2021-11-07 08:25:53,612 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_12ea9e92-1e21-4531-bdc3-70b3535bb07e/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test7-1.i[44124,44137] [2021-11-07 08:25:53,613 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_12ea9e92-1e21-4531-bdc3-70b3535bb07e/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test7-1.i[44245,44258] [2021-11-07 08:25:53,620 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 08:25:53,628 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 08:25:53,660 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_12ea9e92-1e21-4531-bdc3-70b3535bb07e/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test7-1.i[33021,33034] [2021-11-07 08:25:53,720 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_12ea9e92-1e21-4531-bdc3-70b3535bb07e/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test7-1.i[44124,44137] [2021-11-07 08:25:53,721 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_12ea9e92-1e21-4531-bdc3-70b3535bb07e/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test7-1.i[44245,44258] [2021-11-07 08:25:53,726 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 08:25:53,767 INFO L208 MainTranslator]: Completed translation [2021-11-07 08:25:53,768 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:25:53 WrapperNode [2021-11-07 08:25:53,768 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 08:25:53,769 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 08:25:53,770 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 08:25:53,770 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 08:25:53,777 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:25:53" (1/1) ... [2021-11-07 08:25:53,806 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:25:53" (1/1) ... [2021-11-07 08:25:53,890 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 08:25:53,892 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 08:25:53,893 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 08:25:53,893 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 08:25:53,902 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:25:53" (1/1) ... [2021-11-07 08:25:53,902 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:25:53" (1/1) ... [2021-11-07 08:25:53,918 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:25:53" (1/1) ... [2021-11-07 08:25:53,919 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:25:53" (1/1) ... [2021-11-07 08:25:53,980 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:25:53" (1/1) ... [2021-11-07 08:25:53,992 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:25:53" (1/1) ... [2021-11-07 08:25:53,997 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:25:53" (1/1) ... [2021-11-07 08:25:54,010 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 08:25:54,019 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 08:25:54,019 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 08:25:54,019 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 08:25:54,021 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:25:53" (1/1) ... [2021-11-07 08:25:54,029 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 08:25:54,040 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12ea9e92-1e21-4531-bdc3-70b3535bb07e/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:25:54,055 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12ea9e92-1e21-4531-bdc3-70b3535bb07e/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 08:25:54,057 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12ea9e92-1e21-4531-bdc3-70b3535bb07e/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 08:25:54,091 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-07 08:25:54,091 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-07 08:25:54,091 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 08:25:54,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 08:25:54,092 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 08:25:54,092 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-07 08:25:54,092 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 08:25:54,092 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 08:25:54,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 08:25:54,092 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 08:25:54,092 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 08:25:55,365 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 08:25:55,365 INFO L299 CfgBuilder]: Removed 73 assume(true) statements. [2021-11-07 08:25:55,367 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:25:55 BoogieIcfgContainer [2021-11-07 08:25:55,368 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 08:25:55,369 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 08:25:55,369 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 08:25:55,373 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 08:25:55,373 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 08:25:53" (1/3) ... [2021-11-07 08:25:55,374 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13ff4e9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:25:55, skipping insertion in model container [2021-11-07 08:25:55,374 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:25:53" (2/3) ... [2021-11-07 08:25:55,375 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13ff4e9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:25:55, skipping insertion in model container [2021-11-07 08:25:55,375 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:25:55" (3/3) ... [2021-11-07 08:25:55,376 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_FNV_test7-1.i [2021-11-07 08:25:55,382 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 08:25:55,382 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-11-07 08:25:55,429 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 08:25:55,435 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 08:25:55,436 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-11-07 08:25:55,455 INFO L276 IsEmpty]: Start isEmpty. Operand has 190 states, 183 states have (on average 1.715846994535519) internal successors, (314), 189 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 08:25:55,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-07 08:25:55,460 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:25:55,461 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:25:55,461 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 08:25:55,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:25:55,467 INFO L85 PathProgramCache]: Analyzing trace with hash 1805953417, now seen corresponding path program 1 times [2021-11-07 08:25:55,480 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:25:55,481 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409012827] [2021-11-07 08:25:55,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:25:55,482 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:25:55,628 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 08:25:55,629 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [17300336] [2021-11-07 08:25:55,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:25:55,630 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:25:55,630 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12ea9e92-1e21-4531-bdc3-70b3535bb07e/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:25:55,633 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12ea9e92-1e21-4531-bdc3-70b3535bb07e/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:25:55,645 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12ea9e92-1e21-4531-bdc3-70b3535bb07e/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-07 08:25:55,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:25:55,784 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-07 08:25:55,790 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:25:55,861 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 08:25:55,868 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 08:25:55,924 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-07 08:25:55,925 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 08:25:55,995 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 19 treesize of output 11 [2021-11-07 08:25:56,006 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 08:25:56,008 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:25:56,009 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409012827] [2021-11-07 08:25:56,009 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 08:25:56,009 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [17300336] [2021-11-07 08:25:56,010 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [17300336] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:25:56,011 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:25:56,011 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 08:25:56,013 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026331052] [2021-11-07 08:25:56,018 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 08:25:56,018 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:25:56,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 08:25:56,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 08:25:56,038 INFO L87 Difference]: Start difference. First operand has 190 states, 183 states have (on average 1.715846994535519) internal successors, (314), 189 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) Second operand has 5 states, 4 states have (on average 1.75) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states 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 08:25:57,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:25:57,071 INFO L93 Difference]: Finished difference Result 498 states and 837 transitions. [2021-11-07 08:25:57,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 08:25:57,074 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 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 7 [2021-11-07 08:25:57,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:25:57,093 INFO L225 Difference]: With dead ends: 498 [2021-11-07 08:25:57,093 INFO L226 Difference]: Without dead ends: 301 [2021-11-07 08:25:57,097 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 08:25:57,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2021-11-07 08:25:57,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 189. [2021-11-07 08:25:57,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 183 states have (on average 1.3387978142076502) internal successors, (245), 188 states have internal predecessors, (245), 0 states have call successors, (0), 0 states 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 08:25:57,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 245 transitions. [2021-11-07 08:25:57,149 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 245 transitions. Word has length 7 [2021-11-07 08:25:57,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:25:57,150 INFO L470 AbstractCegarLoop]: Abstraction has 189 states and 245 transitions. [2021-11-07 08:25:57,150 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states 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 08:25:57,150 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 245 transitions. [2021-11-07 08:25:57,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-07 08:25:57,153 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:25:57,154 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 08:25:57,195 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12ea9e92-1e21-4531-bdc3-70b3535bb07e/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-07 08:25:57,376 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12ea9e92-1e21-4531-bdc3-70b3535bb07e/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-11-07 08:25:57,377 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 08:25:57,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:25:57,378 INFO L85 PathProgramCache]: Analyzing trace with hash -427856942, now seen corresponding path program 1 times [2021-11-07 08:25:57,378 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:25:57,378 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105195760] [2021-11-07 08:25:57,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:25:57,379 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:25:57,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:25:57,489 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 08:25:57,489 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:25:57,489 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105195760] [2021-11-07 08:25:57,490 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105195760] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:25:57,490 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:25:57,490 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 08:25:57,490 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769388797] [2021-11-07 08:25:57,491 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 08:25:57,491 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:25:57,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 08:25:57,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 08:25:57,502 INFO L87 Difference]: Start difference. First operand 189 states and 245 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 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 08:25:57,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:25:57,885 INFO L93 Difference]: Finished difference Result 351 states and 458 transitions. [2021-11-07 08:25:57,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 08:25:57,886 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 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 08:25:57,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:25:57,889 INFO L225 Difference]: With dead ends: 351 [2021-11-07 08:25:57,889 INFO L226 Difference]: Without dead ends: 266 [2021-11-07 08:25:57,890 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 08:25:57,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2021-11-07 08:25:57,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 189. [2021-11-07 08:25:57,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 183 states have (on average 1.3333333333333333) internal successors, (244), 188 states have internal predecessors, (244), 0 states have call successors, (0), 0 states 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 08:25:57,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 244 transitions. [2021-11-07 08:25:57,905 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 244 transitions. Word has length 50 [2021-11-07 08:25:57,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:25:57,905 INFO L470 AbstractCegarLoop]: Abstraction has 189 states and 244 transitions. [2021-11-07 08:25:57,905 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 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 08:25:57,905 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 244 transitions. [2021-11-07 08:25:57,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-07 08:25:57,907 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:25:57,908 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:25:57,908 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 08:25:57,908 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 08:25:57,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:25:57,909 INFO L85 PathProgramCache]: Analyzing trace with hash 505195510, now seen corresponding path program 1 times [2021-11-07 08:25:57,909 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:25:57,909 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398552889] [2021-11-07 08:25:57,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:25:57,910 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:25:57,932 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 08:25:57,933 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [918316159] [2021-11-07 08:25:57,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:25:57,933 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:25:57,933 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12ea9e92-1e21-4531-bdc3-70b3535bb07e/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:25:57,934 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12ea9e92-1e21-4531-bdc3-70b3535bb07e/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:25:57,950 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12ea9e92-1e21-4531-bdc3-70b3535bb07e/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-07 08:25:58,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:25:58,116 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 08:25:58,120 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:25:58,290 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 08:25:58,290 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:25:58,290 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398552889] [2021-11-07 08:25:58,291 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 08:25:58,291 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [918316159] [2021-11-07 08:25:58,291 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [918316159] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:25:58,291 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:25:58,291 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 08:25:58,292 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213941523] [2021-11-07 08:25:58,292 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 08:25:58,292 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:25:58,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 08:25:58,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:25:58,293 INFO L87 Difference]: Start difference. First operand 189 states and 244 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:25:58,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:25:58,368 INFO L93 Difference]: Finished difference Result 391 states and 511 transitions. [2021-11-07 08:25:58,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 08:25:58,368 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-11-07 08:25:58,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:25:58,370 INFO L225 Difference]: With dead ends: 391 [2021-11-07 08:25:58,370 INFO L226 Difference]: Without dead ends: 210 [2021-11-07 08:25:58,371 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 55 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 08:25:58,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2021-11-07 08:25:58,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 209. [2021-11-07 08:25:58,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 203 states have (on average 1.3004926108374384) internal successors, (264), 208 states have internal predecessors, (264), 0 states have call successors, (0), 0 states 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 08:25:58,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 264 transitions. [2021-11-07 08:25:58,383 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 264 transitions. Word has length 57 [2021-11-07 08:25:58,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:25:58,384 INFO L470 AbstractCegarLoop]: Abstraction has 209 states and 264 transitions. [2021-11-07 08:25:58,384 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:25:58,384 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 264 transitions. [2021-11-07 08:25:58,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-07 08:25:58,387 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:25:58,387 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:25:58,409 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12ea9e92-1e21-4531-bdc3-70b3535bb07e/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-07 08:25:58,592 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12ea9e92-1e21-4531-bdc3-70b3535bb07e/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:25:58,592 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 08:25:58,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:25:58,593 INFO L85 PathProgramCache]: Analyzing trace with hash 482563256, now seen corresponding path program 1 times [2021-11-07 08:25:58,593 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:25:58,593 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292242759] [2021-11-07 08:25:58,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:25:58,594 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:25:58,615 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 08:25:58,615 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [721792908] [2021-11-07 08:25:58,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:25:58,616 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:25:58,616 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12ea9e92-1e21-4531-bdc3-70b3535bb07e/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:25:58,617 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12ea9e92-1e21-4531-bdc3-70b3535bb07e/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:25:58,618 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12ea9e92-1e21-4531-bdc3-70b3535bb07e/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-07 08:25:58,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:25:58,789 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 08:25:58,802 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:25:58,958 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 08:25:58,959 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:25:58,959 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292242759] [2021-11-07 08:25:58,959 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 08:25:58,959 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [721792908] [2021-11-07 08:25:58,960 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [721792908] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:25:58,960 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:25:58,960 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 08:25:58,960 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222727138] [2021-11-07 08:25:58,961 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 08:25:58,961 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:25:58,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 08:25:58,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 08:25:58,962 INFO L87 Difference]: Start difference. First operand 209 states and 264 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:25:59,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:25:59,042 INFO L93 Difference]: Finished difference Result 400 states and 510 transitions. [2021-11-07 08:25:59,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 08:25:59,042 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-11-07 08:25:59,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:25:59,044 INFO L225 Difference]: With dead ends: 400 [2021-11-07 08:25:59,044 INFO L226 Difference]: Without dead ends: 199 [2021-11-07 08:25:59,046 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 08:25:59,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2021-11-07 08:25:59,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 195. [2021-11-07 08:25:59,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 189 states have (on average 1.2857142857142858) internal successors, (243), 194 states have internal predecessors, (243), 0 states have call successors, (0), 0 states 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 08:25:59,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 243 transitions. [2021-11-07 08:25:59,065 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 243 transitions. Word has length 57 [2021-11-07 08:25:59,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:25:59,066 INFO L470 AbstractCegarLoop]: Abstraction has 195 states and 243 transitions. [2021-11-07 08:25:59,067 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:25:59,067 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 243 transitions. [2021-11-07 08:25:59,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-07 08:25:59,072 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:25:59,073 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:25:59,107 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12ea9e92-1e21-4531-bdc3-70b3535bb07e/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-07 08:25:59,288 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12ea9e92-1e21-4531-bdc3-70b3535bb07e/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:25:59,289 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 08:25:59,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:25:59,289 INFO L85 PathProgramCache]: Analyzing trace with hash 283552234, now seen corresponding path program 1 times [2021-11-07 08:25:59,290 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:25:59,290 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701165338] [2021-11-07 08:25:59,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:25:59,290 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:25:59,310 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 08:25:59,311 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1033346271] [2021-11-07 08:25:59,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:25:59,315 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:25:59,324 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12ea9e92-1e21-4531-bdc3-70b3535bb07e/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:25:59,325 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12ea9e92-1e21-4531-bdc3-70b3535bb07e/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:25:59,327 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12ea9e92-1e21-4531-bdc3-70b3535bb07e/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-07 08:25:59,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:25:59,494 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 08:25:59,503 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:25:59,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:25:59,648 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:25:59,649 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701165338] [2021-11-07 08:25:59,649 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 08:25:59,650 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1033346271] [2021-11-07 08:25:59,650 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1033346271] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:25:59,650 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:25:59,651 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 08:25:59,651 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222702366] [2021-11-07 08:25:59,651 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 08:25:59,652 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:25:59,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 08:25:59,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 08:25:59,663 INFO L87 Difference]: Start difference. First operand 195 states and 243 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:25:59,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:25:59,792 INFO L93 Difference]: Finished difference Result 571 states and 715 transitions. [2021-11-07 08:25:59,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 08:25:59,793 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-11-07 08:25:59,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:25:59,797 INFO L225 Difference]: With dead ends: 571 [2021-11-07 08:25:59,797 INFO L226 Difference]: Without dead ends: 384 [2021-11-07 08:25:59,798 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 08:25:59,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2021-11-07 08:25:59,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 218. [2021-11-07 08:25:59,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 212 states have (on average 1.2641509433962264) internal successors, (268), 217 states have internal predecessors, (268), 0 states have call successors, (0), 0 states 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 08:25:59,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 268 transitions. [2021-11-07 08:25:59,808 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 268 transitions. Word has length 57 [2021-11-07 08:25:59,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:25:59,808 INFO L470 AbstractCegarLoop]: Abstraction has 218 states and 268 transitions. [2021-11-07 08:25:59,809 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:25:59,809 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 268 transitions. [2021-11-07 08:25:59,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-07 08:25:59,811 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:25:59,812 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:25:59,849 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12ea9e92-1e21-4531-bdc3-70b3535bb07e/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-07 08:26:00,034 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12ea9e92-1e21-4531-bdc3-70b3535bb07e/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:26:00,035 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 08:26:00,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:26:00,035 INFO L85 PathProgramCache]: Analyzing trace with hash -297894748, now seen corresponding path program 1 times [2021-11-07 08:26:00,035 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:26:00,035 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940054648] [2021-11-07 08:26:00,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:26:00,036 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:26:00,053 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 08:26:00,053 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1752591294] [2021-11-07 08:26:00,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:26:00,053 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:26:00,054 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12ea9e92-1e21-4531-bdc3-70b3535bb07e/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:26:00,054 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12ea9e92-1e21-4531-bdc3-70b3535bb07e/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:26:00,090 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12ea9e92-1e21-4531-bdc3-70b3535bb07e/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-07 08:26:00,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:26:00,267 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 08:26:00,270 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:26:00,410 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 08:26:00,410 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:26:00,411 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940054648] [2021-11-07 08:26:00,411 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 08:26:00,411 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1752591294] [2021-11-07 08:26:00,411 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1752591294] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:26:00,411 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:26:00,411 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 08:26:00,412 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772927176] [2021-11-07 08:26:00,412 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 08:26:00,412 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:26:00,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 08:26:00,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 08:26:00,413 INFO L87 Difference]: Start difference. First operand 218 states and 268 transitions. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:26:00,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:26:00,477 INFO L93 Difference]: Finished difference Result 399 states and 494 transitions. [2021-11-07 08:26:00,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 08:26:00,477 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-11-07 08:26:00,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:26:00,479 INFO L225 Difference]: With dead ends: 399 [2021-11-07 08:26:00,479 INFO L226 Difference]: Without dead ends: 189 [2021-11-07 08:26:00,480 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 08:26:00,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2021-11-07 08:26:00,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 186. [2021-11-07 08:26:00,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 180 states have (on average 1.2722222222222221) internal successors, (229), 185 states have internal predecessors, (229), 0 states have call successors, (0), 0 states 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 08:26:00,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 229 transitions. [2021-11-07 08:26:00,487 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 229 transitions. Word has length 57 [2021-11-07 08:26:00,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:26:00,487 INFO L470 AbstractCegarLoop]: Abstraction has 186 states and 229 transitions. [2021-11-07 08:26:00,487 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:26:00,488 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 229 transitions. [2021-11-07 08:26:00,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-07 08:26:00,488 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:26:00,489 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:26:00,527 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12ea9e92-1e21-4531-bdc3-70b3535bb07e/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-07 08:26:00,701 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12ea9e92-1e21-4531-bdc3-70b3535bb07e/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:26:00,702 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 08:26:00,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:26:00,702 INFO L85 PathProgramCache]: Analyzing trace with hash 260919980, now seen corresponding path program 1 times [2021-11-07 08:26:00,703 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:26:00,703 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088810649] [2021-11-07 08:26:00,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:26:00,703 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:26:00,719 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 08:26:00,720 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [252359824] [2021-11-07 08:26:00,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:26:00,720 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:26:00,720 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12ea9e92-1e21-4531-bdc3-70b3535bb07e/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:26:00,721 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12ea9e92-1e21-4531-bdc3-70b3535bb07e/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:26:00,731 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12ea9e92-1e21-4531-bdc3-70b3535bb07e/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-07 08:26:00,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:26:00,945 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 08:26:00,948 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:26:01,217 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 08:26:01,217 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:26:01,217 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088810649] [2021-11-07 08:26:01,217 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 08:26:01,217 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [252359824] [2021-11-07 08:26:01,217 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [252359824] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:26:01,218 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:26:01,218 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 08:26:01,218 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203086920] [2021-11-07 08:26:01,218 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 08:26:01,218 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:26:01,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 08:26:01,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:26:01,219 INFO L87 Difference]: Start difference. First operand 186 states and 229 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:26:01,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:26:01,331 INFO L93 Difference]: Finished difference Result 464 states and 572 transitions. [2021-11-07 08:26:01,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 08:26:01,331 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-11-07 08:26:01,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:26:01,333 INFO L225 Difference]: With dead ends: 464 [2021-11-07 08:26:01,333 INFO L226 Difference]: Without dead ends: 286 [2021-11-07 08:26:01,334 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 55 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 08:26:01,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2021-11-07 08:26:01,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 283. [2021-11-07 08:26:01,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283 states, 277 states have (on average 1.256317689530686) internal successors, (348), 282 states have internal predecessors, (348), 0 states have call successors, (0), 0 states 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 08:26:01,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 348 transitions. [2021-11-07 08:26:01,345 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 348 transitions. Word has length 57 [2021-11-07 08:26:01,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:26:01,346 INFO L470 AbstractCegarLoop]: Abstraction has 283 states and 348 transitions. [2021-11-07 08:26:01,346 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:26:01,346 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 348 transitions. [2021-11-07 08:26:01,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-07 08:26:01,346 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:26:01,347 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] [2021-11-07 08:26:01,385 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12ea9e92-1e21-4531-bdc3-70b3535bb07e/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-07 08:26:01,568 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12ea9e92-1e21-4531-bdc3-70b3535bb07e/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:26:01,568 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 08:26:01,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:26:01,569 INFO L85 PathProgramCache]: Analyzing trace with hash -972101187, now seen corresponding path program 1 times [2021-11-07 08:26:01,569 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:26:01,569 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399746290] [2021-11-07 08:26:01,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:26:01,569 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:26:01,592 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 08:26:01,604 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [345218687] [2021-11-07 08:26:01,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:26:01,605 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:26:01,605 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12ea9e92-1e21-4531-bdc3-70b3535bb07e/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:26:01,606 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12ea9e92-1e21-4531-bdc3-70b3535bb07e/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:26:01,609 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12ea9e92-1e21-4531-bdc3-70b3535bb07e/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-07 08:26:02,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:26:02,009 INFO L263 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 08:26:02,011 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:26:02,181 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 08:26:02,181 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:26:02,181 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399746290] [2021-11-07 08:26:02,181 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 08:26:02,181 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [345218687] [2021-11-07 08:26:02,182 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [345218687] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:26:02,182 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:26:02,182 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 08:26:02,182 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305116411] [2021-11-07 08:26:02,182 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 08:26:02,182 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:26:02,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 08:26:02,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:26:02,183 INFO L87 Difference]: Start difference. First operand 283 states and 348 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states 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 08:26:02,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:26:02,209 INFO L93 Difference]: Finished difference Result 526 states and 657 transitions. [2021-11-07 08:26:02,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 08:26:02,209 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 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 64 [2021-11-07 08:26:02,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:26:02,211 INFO L225 Difference]: With dead ends: 526 [2021-11-07 08:26:02,212 INFO L226 Difference]: Without dead ends: 284 [2021-11-07 08:26:02,212 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 62 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 08:26:02,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2021-11-07 08:26:02,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 284. [2021-11-07 08:26:02,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 278 states have (on average 1.2553956834532374) internal successors, (349), 283 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:26:02,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 349 transitions. [2021-11-07 08:26:02,223 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 349 transitions. Word has length 64 [2021-11-07 08:26:02,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:26:02,223 INFO L470 AbstractCegarLoop]: Abstraction has 284 states and 349 transitions. [2021-11-07 08:26:02,224 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states 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 08:26:02,224 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 349 transitions. [2021-11-07 08:26:02,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-07 08:26:02,224 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:26:02,224 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] [2021-11-07 08:26:02,263 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12ea9e92-1e21-4531-bdc3-70b3535bb07e/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-07 08:26:02,440 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12ea9e92-1e21-4531-bdc3-70b3535bb07e/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-11-07 08:26:02,440 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 08:26:02,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:26:02,441 INFO L85 PathProgramCache]: Analyzing trace with hash -1225953711, now seen corresponding path program 1 times [2021-11-07 08:26:02,441 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:26:02,441 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389232222] [2021-11-07 08:26:02,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:26:02,442 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:26:02,470 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 08:26:02,470 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2017855267] [2021-11-07 08:26:02,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:26:02,470 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:26:02,470 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12ea9e92-1e21-4531-bdc3-70b3535bb07e/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:26:02,476 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12ea9e92-1e21-4531-bdc3-70b3535bb07e/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:26:02,481 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12ea9e92-1e21-4531-bdc3-70b3535bb07e/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-07 08:26:03,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:26:03,263 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-07 08:26:03,266 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:26:03,469 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 08:26:03,469 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:26:03,469 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389232222] [2021-11-07 08:26:03,470 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 08:26:03,470 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2017855267] [2021-11-07 08:26:03,470 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2017855267] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:26:03,470 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-07 08:26:03,470 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2021-11-07 08:26:03,476 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205561914] [2021-11-07 08:26:03,476 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 08:26:03,477 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:26:03,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 08:26:03,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 08:26:03,477 INFO L87 Difference]: Start difference. First operand 284 states and 349 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states 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 08:26:03,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:26:03,517 INFO L93 Difference]: Finished difference Result 528 states and 659 transitions. [2021-11-07 08:26:03,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 08:26:03,518 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 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 65 [2021-11-07 08:26:03,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:26:03,521 INFO L225 Difference]: With dead ends: 528 [2021-11-07 08:26:03,521 INFO L226 Difference]: Without dead ends: 285 [2021-11-07 08:26:03,522 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 08:26:03,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2021-11-07 08:26:03,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 285. [2021-11-07 08:26:03,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 279 states have (on average 1.2544802867383513) internal successors, (350), 284 states have internal predecessors, (350), 0 states have call successors, (0), 0 states 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 08:26:03,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 350 transitions. [2021-11-07 08:26:03,544 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 350 transitions. Word has length 65 [2021-11-07 08:26:03,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:26:03,544 INFO L470 AbstractCegarLoop]: Abstraction has 285 states and 350 transitions. [2021-11-07 08:26:03,545 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states 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 08:26:03,545 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 350 transitions. [2021-11-07 08:26:03,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-07 08:26:03,546 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:26:03,546 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] [2021-11-07 08:26:03,587 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12ea9e92-1e21-4531-bdc3-70b3535bb07e/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-07 08:26:03,772 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12ea9e92-1e21-4531-bdc3-70b3535bb07e/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-11-07 08:26:03,772 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 08:26:03,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:26:03,773 INFO L85 PathProgramCache]: Analyzing trace with hash -505447363, now seen corresponding path program 2 times [2021-11-07 08:26:03,773 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:26:03,773 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793973863] [2021-11-07 08:26:03,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:26:03,773 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:26:03,810 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 08:26:03,810 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [796056525] [2021-11-07 08:26:03,810 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 08:26:03,810 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:26:03,811 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12ea9e92-1e21-4531-bdc3-70b3535bb07e/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:26:03,811 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12ea9e92-1e21-4531-bdc3-70b3535bb07e/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:26:03,833 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12ea9e92-1e21-4531-bdc3-70b3535bb07e/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-07 08:26:04,846 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-07 08:26:04,847 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 08:26:04,849 INFO L263 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 08:26:04,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:26:05,024 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 08:26:05,024 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:26:05,024 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793973863] [2021-11-07 08:26:05,024 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 08:26:05,024 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [796056525] [2021-11-07 08:26:05,025 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [796056525] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:26:05,025 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:26:05,025 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 08:26:05,025 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994085411] [2021-11-07 08:26:05,025 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 08:26:05,026 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:26:05,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 08:26:05,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:26:05,026 INFO L87 Difference]: Start difference. First operand 285 states and 350 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states 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 08:26:05,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:26:05,059 INFO L93 Difference]: Finished difference Result 530 states and 661 transitions. [2021-11-07 08:26:05,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 08:26:05,060 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 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 66 [2021-11-07 08:26:05,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:26:05,062 INFO L225 Difference]: With dead ends: 530 [2021-11-07 08:26:05,062 INFO L226 Difference]: Without dead ends: 286 [2021-11-07 08:26:05,063 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 64 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 08:26:05,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2021-11-07 08:26:05,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 286. [2021-11-07 08:26:05,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286 states, 280 states have (on average 1.2535714285714286) internal successors, (351), 285 states have internal predecessors, (351), 0 states have call successors, (0), 0 states 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 08:26:05,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 351 transitions. [2021-11-07 08:26:05,074 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 351 transitions. Word has length 66 [2021-11-07 08:26:05,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:26:05,075 INFO L470 AbstractCegarLoop]: Abstraction has 286 states and 351 transitions. [2021-11-07 08:26:05,075 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states 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 08:26:05,075 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 351 transitions. [2021-11-07 08:26:05,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-07 08:26:05,076 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:26:05,076 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] [2021-11-07 08:26:05,087 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12ea9e92-1e21-4531-bdc3-70b3535bb07e/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-07 08:26:05,288 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12ea9e92-1e21-4531-bdc3-70b3535bb07e/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-07 08:26:05,288 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 08:26:05,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:26:05,288 INFO L85 PathProgramCache]: Analyzing trace with hash -1245159310, now seen corresponding path program 1 times [2021-11-07 08:26:05,288 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:26:05,290 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957873873] [2021-11-07 08:26:05,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:26:05,291 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:26:05,324 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 08:26:05,325 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1052279613] [2021-11-07 08:26:05,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:26:05,325 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:26:05,325 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12ea9e92-1e21-4531-bdc3-70b3535bb07e/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:26:05,327 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12ea9e92-1e21-4531-bdc3-70b3535bb07e/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:26:05,362 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12ea9e92-1e21-4531-bdc3-70b3535bb07e/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-07 08:26:05,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:26:05,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-07 08:26:05,878 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:26:06,060 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 08:26:06,061 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:26:06,061 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957873873] [2021-11-07 08:26:06,061 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 08:26:06,061 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1052279613] [2021-11-07 08:26:06,061 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1052279613] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:26:06,061 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-07 08:26:06,061 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2021-11-07 08:26:06,061 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845668260] [2021-11-07 08:26:06,062 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 08:26:06,062 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:26:06,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 08:26:06,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 08:26:06,063 INFO L87 Difference]: Start difference. First operand 286 states and 351 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states 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 08:26:06,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:26:06,101 INFO L93 Difference]: Finished difference Result 532 states and 663 transitions. [2021-11-07 08:26:06,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 08:26:06,102 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 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 67 [2021-11-07 08:26:06,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:26:06,104 INFO L225 Difference]: With dead ends: 532 [2021-11-07 08:26:06,104 INFO L226 Difference]: Without dead ends: 287 [2021-11-07 08:26:06,105 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 08:26:06,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2021-11-07 08:26:06,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 287. [2021-11-07 08:26:06,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 281 states have (on average 1.2526690391459074) internal successors, (352), 286 states have internal predecessors, (352), 0 states have call successors, (0), 0 states 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 08:26:06,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 352 transitions. [2021-11-07 08:26:06,115 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 352 transitions. Word has length 67 [2021-11-07 08:26:06,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:26:06,115 INFO L470 AbstractCegarLoop]: Abstraction has 287 states and 352 transitions. [2021-11-07 08:26:06,115 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states 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 08:26:06,116 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 352 transitions. [2021-11-07 08:26:06,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-07 08:26:06,116 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:26:06,116 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] [2021-11-07 08:26:06,158 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12ea9e92-1e21-4531-bdc3-70b3535bb07e/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-07 08:26:06,332 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12ea9e92-1e21-4531-bdc3-70b3535bb07e/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-11-07 08:26:06,332 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 08:26:06,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:26:06,333 INFO L85 PathProgramCache]: Analyzing trace with hash 1593574109, now seen corresponding path program 2 times [2021-11-07 08:26:06,333 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:26:06,333 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052191693] [2021-11-07 08:26:06,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:26:06,333 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:26:06,361 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 08:26:06,361 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [911057942] [2021-11-07 08:26:06,362 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 08:26:06,362 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:26:06,362 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12ea9e92-1e21-4531-bdc3-70b3535bb07e/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:26:06,375 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12ea9e92-1e21-4531-bdc3-70b3535bb07e/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:26:06,389 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12ea9e92-1e21-4531-bdc3-70b3535bb07e/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process