./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test8-1.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_acce6ce3-13a1-4fcf-b98a-5e506be56433/bin/uautomizer-AkOaLMaTGY/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acce6ce3-13a1-4fcf-b98a-5e506be56433/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_acce6ce3-13a1-4fcf-b98a-5e506be56433/bin/uautomizer-AkOaLMaTGY/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acce6ce3-13a1-4fcf-b98a-5e506be56433/bin/uautomizer-AkOaLMaTGY/config/AutomizerReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test8-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acce6ce3-13a1-4fcf-b98a-5e506be56433/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_acce6ce3-13a1-4fcf-b98a-5e506be56433/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 b6c6a722152c52daf4f5e799c877f12032a99023b4a9ea1a935c1ce634969e85 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 07:43:02,697 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 07:43:02,700 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 07:43:02,759 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 07:43:02,760 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 07:43:02,765 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 07:43:02,767 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 07:43:02,771 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 07:43:02,774 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 07:43:02,779 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 07:43:02,781 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 07:43:02,783 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 07:43:02,783 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 07:43:02,786 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 07:43:02,788 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 07:43:02,793 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 07:43:02,795 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 07:43:02,797 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 07:43:02,803 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 07:43:02,811 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 07:43:02,813 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 07:43:02,815 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 07:43:02,818 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 07:43:02,819 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 07:43:02,829 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 07:43:02,830 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 07:43:02,830 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 07:43:02,832 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 07:43:02,833 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 07:43:02,835 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 07:43:02,835 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 07:43:02,836 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 07:43:02,838 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 07:43:02,840 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 07:43:02,841 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 07:43:02,842 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 07:43:02,843 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 07:43:02,843 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 07:43:02,843 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 07:43:02,844 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 07:43:02,845 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 07:43:02,846 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acce6ce3-13a1-4fcf-b98a-5e506be56433/bin/uautomizer-AkOaLMaTGY/config/svcomp-Overflow-32bit-Automizer_Default.epf [2021-11-07 07:43:02,890 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 07:43:02,890 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 07:43:02,891 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 07:43:02,891 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 07:43:02,892 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 07:43:02,893 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 07:43:02,893 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 07:43:02,893 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 07:43:02,894 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 07:43:02,894 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-07 07:43:02,895 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 07:43:02,895 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 07:43:02,895 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 07:43:02,896 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 07:43:02,896 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 07:43:02,896 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 07:43:02,896 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-11-07 07:43:02,897 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 07:43:02,897 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 07:43:02,897 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 07:43:02,897 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 07:43:02,898 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 07:43:02,898 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 07:43:02,898 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 07:43:02,898 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 07:43:02,899 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 07:43:02,899 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 07:43:02,899 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 07:43:02,899 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 07:43:02,901 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 07:43:02,901 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 07:43:02,902 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 07:43:02,902 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_acce6ce3-13a1-4fcf-b98a-5e506be56433/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acce6ce3-13a1-4fcf-b98a-5e506be56433/bin/uautomizer-AkOaLMaTGY Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b6c6a722152c52daf4f5e799c877f12032a99023b4a9ea1a935c1ce634969e85 [2021-11-07 07:43:03,167 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 07:43:03,197 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 07:43:03,201 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 07:43:03,202 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 07:43:03,203 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 07:43:03,204 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acce6ce3-13a1-4fcf-b98a-5e506be56433/bin/uautomizer-AkOaLMaTGY/../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test8-1.i [2021-11-07 07:43:03,272 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acce6ce3-13a1-4fcf-b98a-5e506be56433/bin/uautomizer-AkOaLMaTGY/data/4c008f3e7/be1fd4f108d947e893b792a73f543582/FLAG3b151f7d9 [2021-11-07 07:43:03,890 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 07:43:03,890 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acce6ce3-13a1-4fcf-b98a-5e506be56433/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test8-1.i [2021-11-07 07:43:03,917 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acce6ce3-13a1-4fcf-b98a-5e506be56433/bin/uautomizer-AkOaLMaTGY/data/4c008f3e7/be1fd4f108d947e893b792a73f543582/FLAG3b151f7d9 [2021-11-07 07:43:04,110 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acce6ce3-13a1-4fcf-b98a-5e506be56433/bin/uautomizer-AkOaLMaTGY/data/4c008f3e7/be1fd4f108d947e893b792a73f543582 [2021-11-07 07:43:04,112 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 07:43:04,114 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 07:43:04,115 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 07:43:04,115 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 07:43:04,135 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 07:43:04,135 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 07:43:04" (1/1) ... [2021-11-07 07:43:04,136 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33c7b551 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:43:04, skipping insertion in model container [2021-11-07 07:43:04,137 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 07:43:04" (1/1) ... [2021-11-07 07:43:04,143 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 07:43:04,211 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 07:43:04,714 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_acce6ce3-13a1-4fcf-b98a-5e506be56433/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test8-1.i[33021,33034] [2021-11-07 07:43:04,879 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_acce6ce3-13a1-4fcf-b98a-5e506be56433/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test8-1.i[45234,45247] [2021-11-07 07:43:04,894 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 07:43:04,904 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 07:43:04,954 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_acce6ce3-13a1-4fcf-b98a-5e506be56433/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test8-1.i[33021,33034] [2021-11-07 07:43:05,051 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_acce6ce3-13a1-4fcf-b98a-5e506be56433/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test8-1.i[45234,45247] [2021-11-07 07:43:05,061 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 07:43:05,108 INFO L208 MainTranslator]: Completed translation [2021-11-07 07:43:05,108 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:43:05 WrapperNode [2021-11-07 07:43:05,109 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 07:43:05,110 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 07:43:05,110 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 07:43:05,110 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 07:43:05,118 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:43:05" (1/1) ... [2021-11-07 07:43:05,177 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:43:05" (1/1) ... [2021-11-07 07:43:05,270 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 07:43:05,271 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 07:43:05,271 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 07:43:05,272 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 07:43:05,282 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:43:05" (1/1) ... [2021-11-07 07:43:05,282 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:43:05" (1/1) ... [2021-11-07 07:43:05,311 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:43:05" (1/1) ... [2021-11-07 07:43:05,311 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:43:05" (1/1) ... [2021-11-07 07:43:05,408 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:43:05" (1/1) ... [2021-11-07 07:43:05,424 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:43:05" (1/1) ... [2021-11-07 07:43:05,429 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:43:05" (1/1) ... [2021-11-07 07:43:05,440 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 07:43:05,441 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 07:43:05,441 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 07:43:05,441 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 07:43:05,446 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:43:05" (1/1) ... [2021-11-07 07:43:05,466 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 07:43:05,490 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acce6ce3-13a1-4fcf-b98a-5e506be56433/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:43:05,526 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acce6ce3-13a1-4fcf-b98a-5e506be56433/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 07:43:05,540 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acce6ce3-13a1-4fcf-b98a-5e506be56433/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 07:43:05,569 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-07 07:43:05,569 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-07 07:43:05,570 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 07:43:05,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 07:43:05,570 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 07:43:05,570 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-07 07:43:05,570 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 07:43:05,571 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 07:43:05,571 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 07:43:05,571 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 07:43:05,571 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 07:43:07,586 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 07:43:07,586 INFO L299 CfgBuilder]: Removed 136 assume(true) statements. [2021-11-07 07:43:07,589 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 07:43:07 BoogieIcfgContainer [2021-11-07 07:43:07,590 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 07:43:07,591 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 07:43:07,592 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 07:43:07,595 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 07:43:07,595 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 07:43:04" (1/3) ... [2021-11-07 07:43:07,596 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25215196 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 07:43:07, skipping insertion in model container [2021-11-07 07:43:07,596 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:43:05" (2/3) ... [2021-11-07 07:43:07,597 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25215196 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 07:43:07, skipping insertion in model container [2021-11-07 07:43:07,597 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 07:43:07" (3/3) ... [2021-11-07 07:43:07,600 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_FNV_test8-1.i [2021-11-07 07:43:07,609 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 07:43:07,609 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2021-11-07 07:43:07,658 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 07:43:07,664 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 07:43:07,664 INFO L340 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2021-11-07 07:43:07,687 INFO L276 IsEmpty]: Start isEmpty. Operand has 260 states, 249 states have (on average 1.7751004016064258) internal successors, (442), 259 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:43:07,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-07 07:43:07,692 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:43:07,692 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:43:07,693 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-07 07:43:07,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:43:07,698 INFO L85 PathProgramCache]: Analyzing trace with hash 1805953417, now seen corresponding path program 1 times [2021-11-07 07:43:07,707 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:43:07,708 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909489388] [2021-11-07 07:43:07,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:43:07,709 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:43:07,843 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 07:43:07,844 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1882694142] [2021-11-07 07:43:07,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:43:07,845 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:43:07,846 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acce6ce3-13a1-4fcf-b98a-5e506be56433/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:43:07,847 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acce6ce3-13a1-4fcf-b98a-5e506be56433/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:43:07,850 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acce6ce3-13a1-4fcf-b98a-5e506be56433/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-07 07:43:07,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:43:07,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-07 07:43:07,991 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:43:08,062 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-07 07:43:08,070 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-07 07:43:08,139 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-07 07:43:08,139 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-11-07 07:43:08,219 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 14 [2021-11-07 07:43:08,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:43:08,243 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:43:08,243 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909489388] [2021-11-07 07:43:08,244 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 07:43:08,244 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1882694142] [2021-11-07 07:43:08,245 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1882694142] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:43:08,246 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:43:08,246 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 07:43:08,250 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575779824] [2021-11-07 07:43:08,255 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 07:43:08,255 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:43:08,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 07:43:08,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 07:43:08,275 INFO L87 Difference]: Start difference. First operand has 260 states, 249 states have (on average 1.7751004016064258) internal successors, (442), 259 states have internal predecessors, (442), 0 states have call successors, (0), 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 07:43:09,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:43:09,221 INFO L93 Difference]: Finished difference Result 637 states and 1090 transitions. [2021-11-07 07:43:09,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 07:43:09,223 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 07:43:09,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:43:09,238 INFO L225 Difference]: With dead ends: 637 [2021-11-07 07:43:09,238 INFO L226 Difference]: Without dead ends: 374 [2021-11-07 07:43:09,242 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 07:43:09,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2021-11-07 07:43:09,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 262. [2021-11-07 07:43:09,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 252 states have (on average 1.380952380952381) internal successors, (348), 261 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 07:43:09,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 348 transitions. [2021-11-07 07:43:09,295 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 348 transitions. Word has length 7 [2021-11-07 07:43:09,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:43:09,295 INFO L470 AbstractCegarLoop]: Abstraction has 262 states and 348 transitions. [2021-11-07 07:43:09,295 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 07:43:09,296 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 348 transitions. [2021-11-07 07:43:09,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-07 07:43:09,298 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:43:09,298 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:43:09,336 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acce6ce3-13a1-4fcf-b98a-5e506be56433/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-07 07:43:09,512 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acce6ce3-13a1-4fcf-b98a-5e506be56433/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:43:09,513 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-07 07:43:09,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:43:09,513 INFO L85 PathProgramCache]: Analyzing trace with hash -1077866466, now seen corresponding path program 1 times [2021-11-07 07:43:09,514 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:43:09,514 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005305537] [2021-11-07 07:43:09,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:43:09,514 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:43:09,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:43:09,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:43:09,621 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:43:09,621 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005305537] [2021-11-07 07:43:09,621 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005305537] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:43:09,621 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:43:09,622 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 07:43:09,622 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366151233] [2021-11-07 07:43:09,623 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 07:43:09,623 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:43:09,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 07:43:09,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 07:43:09,624 INFO L87 Difference]: Start difference. First operand 262 states and 348 transitions. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:43:09,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:43:09,993 INFO L93 Difference]: Finished difference Result 496 states and 663 transitions. [2021-11-07 07:43:09,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 07:43:09,994 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2021-11-07 07:43:09,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:43:09,997 INFO L225 Difference]: With dead ends: 496 [2021-11-07 07:43:09,997 INFO L226 Difference]: Without dead ends: 375 [2021-11-07 07:43:09,998 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 07:43:09,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2021-11-07 07:43:10,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 262. [2021-11-07 07:43:10,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 252 states have (on average 1.376984126984127) internal successors, (347), 261 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:43:10,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 347 transitions. [2021-11-07 07:43:10,015 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 347 transitions. Word has length 49 [2021-11-07 07:43:10,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:43:10,015 INFO L470 AbstractCegarLoop]: Abstraction has 262 states and 347 transitions. [2021-11-07 07:43:10,015 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:43:10,015 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 347 transitions. [2021-11-07 07:43:10,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-07 07:43:10,017 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:43:10,018 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 07:43:10,018 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 07:43:10,018 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-07 07:43:10,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:43:10,019 INFO L85 PathProgramCache]: Analyzing trace with hash 505195510, now seen corresponding path program 1 times [2021-11-07 07:43:10,019 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:43:10,019 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807649639] [2021-11-07 07:43:10,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:43:10,019 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:43:10,066 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 07:43:10,066 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1897901361] [2021-11-07 07:43:10,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:43:10,066 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:43:10,067 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acce6ce3-13a1-4fcf-b98a-5e506be56433/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:43:10,076 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acce6ce3-13a1-4fcf-b98a-5e506be56433/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:43:10,097 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acce6ce3-13a1-4fcf-b98a-5e506be56433/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-07 07:43:10,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:43:10,253 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 07:43:10,259 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:43:10,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:43:10,428 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:43:10,428 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807649639] [2021-11-07 07:43:10,428 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 07:43:10,428 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1897901361] [2021-11-07 07:43:10,428 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1897901361] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:43:10,429 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:43:10,429 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 07:43:10,429 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517462961] [2021-11-07 07:43:10,430 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 07:43:10,430 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:43:10,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 07:43:10,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 07:43:10,431 INFO L87 Difference]: Start difference. First operand 262 states and 347 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 07:43:10,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:43:10,527 INFO L93 Difference]: Finished difference Result 537 states and 717 transitions. [2021-11-07 07:43:10,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 07:43:10,528 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 07:43:10,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:43:10,530 INFO L225 Difference]: With dead ends: 537 [2021-11-07 07:43:10,540 INFO L226 Difference]: Without dead ends: 283 [2021-11-07 07:43:10,541 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 07:43:10,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2021-11-07 07:43:10,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 282. [2021-11-07 07:43:10,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 272 states have (on average 1.349264705882353) internal successors, (367), 281 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:43:10,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 367 transitions. [2021-11-07 07:43:10,570 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 367 transitions. Word has length 57 [2021-11-07 07:43:10,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:43:10,571 INFO L470 AbstractCegarLoop]: Abstraction has 282 states and 367 transitions. [2021-11-07 07:43:10,571 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 07:43:10,571 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 367 transitions. [2021-11-07 07:43:10,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-07 07:43:10,573 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:43:10,573 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 07:43:10,623 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acce6ce3-13a1-4fcf-b98a-5e506be56433/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-07 07:43:10,802 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acce6ce3-13a1-4fcf-b98a-5e506be56433/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:43:10,803 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-07 07:43:10,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:43:10,803 INFO L85 PathProgramCache]: Analyzing trace with hash 482563256, now seen corresponding path program 1 times [2021-11-07 07:43:10,804 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:43:10,804 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136861155] [2021-11-07 07:43:10,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:43:10,804 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:43:10,857 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 07:43:10,861 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2127996064] [2021-11-07 07:43:10,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:43:10,862 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:43:10,862 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acce6ce3-13a1-4fcf-b98a-5e506be56433/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:43:10,864 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acce6ce3-13a1-4fcf-b98a-5e506be56433/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:43:10,899 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acce6ce3-13a1-4fcf-b98a-5e506be56433/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-07 07:43:11,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:43:11,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 07:43:11,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:43:11,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:43:11,257 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:43:11,258 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136861155] [2021-11-07 07:43:11,258 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 07:43:11,258 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2127996064] [2021-11-07 07:43:11,258 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2127996064] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:43:11,259 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:43:11,259 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 07:43:11,259 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434986673] [2021-11-07 07:43:11,261 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 07:43:11,261 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:43:11,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 07:43:11,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 07:43:11,262 INFO L87 Difference]: Start difference. First operand 282 states and 367 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 07:43:11,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:43:11,345 INFO L93 Difference]: Finished difference Result 546 states and 716 transitions. [2021-11-07 07:43:11,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 07:43:11,346 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 07:43:11,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:43:11,348 INFO L225 Difference]: With dead ends: 546 [2021-11-07 07:43:11,348 INFO L226 Difference]: Without dead ends: 272 [2021-11-07 07:43:11,350 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 07:43:11,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2021-11-07 07:43:11,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 268. [2021-11-07 07:43:11,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 258 states have (on average 1.3410852713178294) internal successors, (346), 267 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:43:11,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 346 transitions. [2021-11-07 07:43:11,373 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 346 transitions. Word has length 57 [2021-11-07 07:43:11,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:43:11,374 INFO L470 AbstractCegarLoop]: Abstraction has 268 states and 346 transitions. [2021-11-07 07:43:11,374 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 07:43:11,375 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 346 transitions. [2021-11-07 07:43:11,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-07 07:43:11,384 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:43:11,384 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 07:43:11,413 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acce6ce3-13a1-4fcf-b98a-5e506be56433/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-11-07 07:43:11,604 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acce6ce3-13a1-4fcf-b98a-5e506be56433/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:43:11,605 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-07 07:43:11,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:43:11,605 INFO L85 PathProgramCache]: Analyzing trace with hash 283552234, now seen corresponding path program 1 times [2021-11-07 07:43:11,605 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:43:11,606 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363965698] [2021-11-07 07:43:11,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:43:11,606 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:43:11,638 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 07:43:11,638 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1029857485] [2021-11-07 07:43:11,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:43:11,639 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:43:11,639 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acce6ce3-13a1-4fcf-b98a-5e506be56433/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:43:11,648 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acce6ce3-13a1-4fcf-b98a-5e506be56433/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:43:11,656 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acce6ce3-13a1-4fcf-b98a-5e506be56433/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-07 07:43:11,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:43:11,845 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 07:43:11,852 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:43:11,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:43:11,997 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:43:11,997 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363965698] [2021-11-07 07:43:11,997 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 07:43:11,997 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1029857485] [2021-11-07 07:43:11,997 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1029857485] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:43:11,997 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:43:11,998 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 07:43:11,998 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980896603] [2021-11-07 07:43:11,998 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 07:43:11,998 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:43:11,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 07:43:11,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 07:43:11,999 INFO L87 Difference]: Start difference. First operand 268 states and 346 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 07:43:12,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:43:12,122 INFO L93 Difference]: Finished difference Result 790 states and 1024 transitions. [2021-11-07 07:43:12,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 07:43:12,122 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 07:43:12,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:43:12,126 INFO L225 Difference]: With dead ends: 790 [2021-11-07 07:43:12,126 INFO L226 Difference]: Without dead ends: 530 [2021-11-07 07:43:12,127 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 07:43:12,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 530 states. [2021-11-07 07:43:12,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 530 to 291. [2021-11-07 07:43:12,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 281 states have (on average 1.3202846975088969) internal successors, (371), 290 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:43:12,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 371 transitions. [2021-11-07 07:43:12,142 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 371 transitions. Word has length 57 [2021-11-07 07:43:12,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:43:12,143 INFO L470 AbstractCegarLoop]: Abstraction has 291 states and 371 transitions. [2021-11-07 07:43:12,143 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 07:43:12,143 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 371 transitions. [2021-11-07 07:43:12,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-07 07:43:12,144 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:43:12,145 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 07:43:12,176 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acce6ce3-13a1-4fcf-b98a-5e506be56433/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-07 07:43:12,366 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acce6ce3-13a1-4fcf-b98a-5e506be56433/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:43:12,366 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-07 07:43:12,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:43:12,367 INFO L85 PathProgramCache]: Analyzing trace with hash -297894748, now seen corresponding path program 1 times [2021-11-07 07:43:12,367 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:43:12,367 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991655731] [2021-11-07 07:43:12,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:43:12,368 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:43:12,388 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 07:43:12,388 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1727022513] [2021-11-07 07:43:12,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:43:12,388 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:43:12,389 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acce6ce3-13a1-4fcf-b98a-5e506be56433/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:43:12,390 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acce6ce3-13a1-4fcf-b98a-5e506be56433/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:43:12,397 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acce6ce3-13a1-4fcf-b98a-5e506be56433/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-07 07:43:12,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:43:12,593 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 07:43:12,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:43:12,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:43:12,753 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:43:12,754 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991655731] [2021-11-07 07:43:12,754 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 07:43:12,754 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1727022513] [2021-11-07 07:43:12,754 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1727022513] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:43:12,754 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:43:12,755 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 07:43:12,755 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891216413] [2021-11-07 07:43:12,757 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 07:43:12,757 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:43:12,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 07:43:12,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 07:43:12,762 INFO L87 Difference]: Start difference. First operand 291 states and 371 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 07:43:12,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:43:12,813 INFO L93 Difference]: Finished difference Result 545 states and 700 transitions. [2021-11-07 07:43:12,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 07:43:12,813 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 07:43:12,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:43:12,815 INFO L225 Difference]: With dead ends: 545 [2021-11-07 07:43:12,815 INFO L226 Difference]: Without dead ends: 262 [2021-11-07 07:43:12,816 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 07:43:12,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2021-11-07 07:43:12,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 259. [2021-11-07 07:43:12,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 249 states have (on average 1.3333333333333333) internal successors, (332), 258 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:43:12,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 332 transitions. [2021-11-07 07:43:12,825 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 332 transitions. Word has length 57 [2021-11-07 07:43:12,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:43:12,826 INFO L470 AbstractCegarLoop]: Abstraction has 259 states and 332 transitions. [2021-11-07 07:43:12,826 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 07:43:12,826 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 332 transitions. [2021-11-07 07:43:12,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-07 07:43:12,827 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:43:12,827 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 07:43:12,852 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acce6ce3-13a1-4fcf-b98a-5e506be56433/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-07 07:43:13,038 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acce6ce3-13a1-4fcf-b98a-5e506be56433/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:43:13,039 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-07 07:43:13,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:43:13,039 INFO L85 PathProgramCache]: Analyzing trace with hash 260919980, now seen corresponding path program 1 times [2021-11-07 07:43:13,039 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:43:13,039 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391410507] [2021-11-07 07:43:13,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:43:13,040 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:43:13,058 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 07:43:13,059 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [279676656] [2021-11-07 07:43:13,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:43:13,059 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:43:13,059 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acce6ce3-13a1-4fcf-b98a-5e506be56433/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:43:13,060 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acce6ce3-13a1-4fcf-b98a-5e506be56433/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:43:13,096 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acce6ce3-13a1-4fcf-b98a-5e506be56433/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-07 07:43:13,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:43:13,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 07:43:13,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:43:13,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:43:13,549 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:43:13,549 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391410507] [2021-11-07 07:43:13,549 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 07:43:13,549 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [279676656] [2021-11-07 07:43:13,550 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [279676656] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:43:13,550 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:43:13,550 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 07:43:13,551 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714496774] [2021-11-07 07:43:13,551 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 07:43:13,551 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:43:13,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 07:43:13,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 07:43:13,555 INFO L87 Difference]: Start difference. First operand 259 states and 332 transitions. Second operand has 4 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 07:43:13,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:43:13,650 INFO L93 Difference]: Finished difference Result 375 states and 478 transitions. [2021-11-07 07:43:13,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 07:43:13,651 INFO L78 Accepts]: Start accepts. Automaton has has 4 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 07:43:13,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:43:13,655 INFO L225 Difference]: With dead ends: 375 [2021-11-07 07:43:13,656 INFO L226 Difference]: Without dead ends: 374 [2021-11-07 07:43:13,657 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 07:43:13,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2021-11-07 07:43:13,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 341. [2021-11-07 07:43:13,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 331 states have (on average 1.29607250755287) internal successors, (429), 340 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:43:13,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 429 transitions. [2021-11-07 07:43:13,671 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 429 transitions. Word has length 57 [2021-11-07 07:43:13,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:43:13,672 INFO L470 AbstractCegarLoop]: Abstraction has 341 states and 429 transitions. [2021-11-07 07:43:13,672 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 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 07:43:13,672 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 429 transitions. [2021-11-07 07:43:13,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-07 07:43:13,674 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:43:13,674 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:43:13,713 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acce6ce3-13a1-4fcf-b98a-5e506be56433/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-07 07:43:13,888 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acce6ce3-13a1-4fcf-b98a-5e506be56433/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:43:13,889 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-07 07:43:13,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:43:13,889 INFO L85 PathProgramCache]: Analyzing trace with hash -501414786, now seen corresponding path program 1 times [2021-11-07 07:43:13,889 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:43:13,890 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288636744] [2021-11-07 07:43:13,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:43:13,890 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:43:13,919 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 07:43:13,919 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1239382074] [2021-11-07 07:43:13,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:43:13,919 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:43:13,920 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acce6ce3-13a1-4fcf-b98a-5e506be56433/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:43:13,923 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acce6ce3-13a1-4fcf-b98a-5e506be56433/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:43:13,940 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acce6ce3-13a1-4fcf-b98a-5e506be56433/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-07 07:43:14,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:43:14,134 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 07:43:14,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:43:14,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:43:14,306 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:43:14,306 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288636744] [2021-11-07 07:43:14,307 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 07:43:14,307 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1239382074] [2021-11-07 07:43:14,307 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1239382074] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:43:14,307 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:43:14,307 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 07:43:14,308 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851859476] [2021-11-07 07:43:14,308 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 07:43:14,308 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:43:14,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 07:43:14,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 07:43:14,309 INFO L87 Difference]: Start difference. First operand 341 states and 429 transitions. Second operand has 4 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:43:14,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:43:14,370 INFO L93 Difference]: Finished difference Result 341 states and 429 transitions. [2021-11-07 07:43:14,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 07:43:14,371 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2021-11-07 07:43:14,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:43:14,373 INFO L225 Difference]: With dead ends: 341 [2021-11-07 07:43:14,374 INFO L226 Difference]: Without dead ends: 339 [2021-11-07 07:43:14,374 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 07:43:14,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2021-11-07 07:43:14,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 339. [2021-11-07 07:43:14,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 339 states, 331 states have (on average 1.2900302114803626) internal successors, (427), 338 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:43:14,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 427 transitions. [2021-11-07 07:43:14,387 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 427 transitions. Word has length 58 [2021-11-07 07:43:14,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:43:14,387 INFO L470 AbstractCegarLoop]: Abstraction has 339 states and 427 transitions. [2021-11-07 07:43:14,388 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:43:14,388 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 427 transitions. [2021-11-07 07:43:14,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-07 07:43:14,388 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:43:14,389 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 07:43:14,426 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acce6ce3-13a1-4fcf-b98a-5e506be56433/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-07 07:43:14,612 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acce6ce3-13a1-4fcf-b98a-5e506be56433/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:43:14,613 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-07 07:43:14,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:43:14,613 INFO L85 PathProgramCache]: Analyzing trace with hash -1348166297, now seen corresponding path program 1 times [2021-11-07 07:43:14,613 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:43:14,613 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426424492] [2021-11-07 07:43:14,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:43:14,613 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:43:14,630 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 07:43:14,630 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1347743194] [2021-11-07 07:43:14,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:43:14,631 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:43:14,631 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acce6ce3-13a1-4fcf-b98a-5e506be56433/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:43:14,632 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acce6ce3-13a1-4fcf-b98a-5e506be56433/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:43:14,644 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acce6ce3-13a1-4fcf-b98a-5e506be56433/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-07 07:43:14,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:43:14,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 07:43:14,867 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:43:15,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:43:15,190 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:43:15,191 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426424492] [2021-11-07 07:43:15,191 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 07:43:15,191 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1347743194] [2021-11-07 07:43:15,191 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1347743194] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:43:15,191 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:43:15,191 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 07:43:15,192 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028616331] [2021-11-07 07:43:15,192 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 07:43:15,192 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:43:15,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 07:43:15,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 07:43:15,193 INFO L87 Difference]: Start difference. First operand 339 states and 427 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 07:43:15,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:43:15,313 INFO L93 Difference]: Finished difference Result 728 states and 937 transitions. [2021-11-07 07:43:15,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 07:43:15,313 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 07:43:15,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:43:15,316 INFO L225 Difference]: With dead ends: 728 [2021-11-07 07:43:15,317 INFO L226 Difference]: Without dead ends: 439 [2021-11-07 07:43:15,317 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 07:43:15,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2021-11-07 07:43:15,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 435. [2021-11-07 07:43:15,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 435 states, 427 states have (on average 1.3114754098360655) internal successors, (560), 434 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:43:15,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 560 transitions. [2021-11-07 07:43:15,335 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 560 transitions. Word has length 64 [2021-11-07 07:43:15,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:43:15,336 INFO L470 AbstractCegarLoop]: Abstraction has 435 states and 560 transitions. [2021-11-07 07:43:15,336 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 07:43:15,336 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 560 transitions. [2021-11-07 07:43:15,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-07 07:43:15,337 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:43:15,337 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:43:15,376 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acce6ce3-13a1-4fcf-b98a-5e506be56433/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-07 07:43:15,550 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acce6ce3-13a1-4fcf-b98a-5e506be56433/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:43:15,550 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-07 07:43:15,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:43:15,551 INFO L85 PathProgramCache]: Analyzing trace with hash -1922096842, now seen corresponding path program 1 times [2021-11-07 07:43:15,551 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:43:15,551 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008042443] [2021-11-07 07:43:15,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:43:15,552 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:43:15,582 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 07:43:15,583 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1532073098] [2021-11-07 07:43:15,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:43:15,583 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:43:15,583 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acce6ce3-13a1-4fcf-b98a-5e506be56433/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:43:15,584 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acce6ce3-13a1-4fcf-b98a-5e506be56433/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:43:15,606 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acce6ce3-13a1-4fcf-b98a-5e506be56433/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-07 07:43:16,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:43:16,074 INFO L263 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 07:43:16,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:43:16,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:43:16,237 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:43:16,237 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008042443] [2021-11-07 07:43:16,237 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 07:43:16,237 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1532073098] [2021-11-07 07:43:16,237 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1532073098] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:43:16,237 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:43:16,237 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 07:43:16,238 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643503266] [2021-11-07 07:43:16,238 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 07:43:16,238 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:43:16,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 07:43:16,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 07:43:16,239 INFO L87 Difference]: Start difference. First operand 435 states and 560 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:43:16,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:43:16,271 INFO L93 Difference]: Finished difference Result 828 states and 1079 transitions. [2021-11-07 07:43:16,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 07:43:16,272 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2021-11-07 07:43:16,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:43:16,274 INFO L225 Difference]: With dead ends: 828 [2021-11-07 07:43:16,275 INFO L226 Difference]: Without dead ends: 437 [2021-11-07 07:43:16,276 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 07:43:16,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2021-11-07 07:43:16,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 437. [2021-11-07 07:43:16,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 437 states, 429 states have (on average 1.31002331002331) internal successors, (562), 436 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:43:16,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 562 transitions. [2021-11-07 07:43:16,307 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 562 transitions. Word has length 71 [2021-11-07 07:43:16,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:43:16,307 INFO L470 AbstractCegarLoop]: Abstraction has 437 states and 562 transitions. [2021-11-07 07:43:16,308 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:43:16,308 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 562 transitions. [2021-11-07 07:43:16,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-07 07:43:16,309 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:43:16,309 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:43:16,352 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acce6ce3-13a1-4fcf-b98a-5e506be56433/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-07 07:43:16,533 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acce6ce3-13a1-4fcf-b98a-5e506be56433/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-07 07:43:16,533 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-07 07:43:16,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:43:16,534 INFO L85 PathProgramCache]: Analyzing trace with hash 1441109537, now seen corresponding path program 1 times [2021-11-07 07:43:16,534 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:43:16,534 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775958527] [2021-11-07 07:43:16,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:43:16,534 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:43:16,565 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 07:43:16,565 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [347184112] [2021-11-07 07:43:16,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:43:16,570 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:43:16,570 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acce6ce3-13a1-4fcf-b98a-5e506be56433/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:43:16,571 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acce6ce3-13a1-4fcf-b98a-5e506be56433/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:43:16,597 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acce6ce3-13a1-4fcf-b98a-5e506be56433/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-07 07:43:17,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:43:17,111 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-07 07:43:17,113 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:43:17,302 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:43:17,302 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:43:17,302 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775958527] [2021-11-07 07:43:17,302 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 07:43:17,302 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [347184112] [2021-11-07 07:43:17,302 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [347184112] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:43:17,302 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-07 07:43:17,303 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2021-11-07 07:43:17,303 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783713236] [2021-11-07 07:43:17,303 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 07:43:17,303 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:43:17,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 07:43:17,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 07:43:17,304 INFO L87 Difference]: Start difference. First operand 437 states and 562 transitions. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:43:17,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:43:17,362 INFO L93 Difference]: Finished difference Result 1196 states and 1564 transitions. [2021-11-07 07:43:17,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 07:43:17,363 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2021-11-07 07:43:17,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:43:17,368 INFO L225 Difference]: With dead ends: 1196 [2021-11-07 07:43:17,368 INFO L226 Difference]: Without dead ends: 807 [2021-11-07 07:43:17,369 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 07:43:17,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 807 states. [2021-11-07 07:43:17,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 807 to 439. [2021-11-07 07:43:17,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 439 states, 431 states have (on average 1.308584686774942) internal successors, (564), 438 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:43:17,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 439 states to 439 states and 564 transitions. [2021-11-07 07:43:17,389 INFO L78 Accepts]: Start accepts. Automaton has 439 states and 564 transitions. Word has length 72 [2021-11-07 07:43:17,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:43:17,390 INFO L470 AbstractCegarLoop]: Abstraction has 439 states and 564 transitions. [2021-11-07 07:43:17,390 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:43:17,390 INFO L276 IsEmpty]: Start isEmpty. Operand 439 states and 564 transitions. [2021-11-07 07:43:17,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-07 07:43:17,391 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:43:17,391 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:43:17,429 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acce6ce3-13a1-4fcf-b98a-5e506be56433/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-07 07:43:17,612 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acce6ce3-13a1-4fcf-b98a-5e506be56433/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:43:17,613 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-07 07:43:17,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:43:17,613 INFO L85 PathProgramCache]: Analyzing trace with hash -159762793, now seen corresponding path program 1 times [2021-11-07 07:43:17,613 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:43:17,613 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611963158] [2021-11-07 07:43:17,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:43:17,613 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:43:17,626 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 07:43:17,626 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [145001135] [2021-11-07 07:43:17,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:43:17,627 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:43:17,627 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acce6ce3-13a1-4fcf-b98a-5e506be56433/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:43:17,632 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acce6ce3-13a1-4fcf-b98a-5e506be56433/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:43:17,654 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acce6ce3-13a1-4fcf-b98a-5e506be56433/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-07 07:43:18,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:43:18,311 INFO L263 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 07:43:18,313 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:43:18,528 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 07:43:18,529 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:43:18,529 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611963158] [2021-11-07 07:43:18,529 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 07:43:18,530 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [145001135] [2021-11-07 07:43:18,530 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [145001135] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:43:18,530 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-07 07:43:18,530 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2021-11-07 07:43:18,530 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932822758] [2021-11-07 07:43:18,531 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 07:43:18,531 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:43:18,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 07:43:18,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 07:43:18,532 INFO L87 Difference]: Start difference. First operand 439 states and 564 transitions. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:43:18,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:43:18,579 INFO L93 Difference]: Finished difference Result 835 states and 1086 transitions. [2021-11-07 07:43:18,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 07:43:18,580 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2021-11-07 07:43:18,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:43:18,582 INFO L225 Difference]: With dead ends: 835 [2021-11-07 07:43:18,583 INFO L226 Difference]: Without dead ends: 441 [2021-11-07 07:43:18,583 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 70 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 07:43:18,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2021-11-07 07:43:18,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 441. [2021-11-07 07:43:18,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 441 states, 433 states have (on average 1.3071593533487298) internal successors, (566), 440 states have internal predecessors, (566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:43:18,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 566 transitions. [2021-11-07 07:43:18,600 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 566 transitions. Word has length 73 [2021-11-07 07:43:18,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:43:18,601 INFO L470 AbstractCegarLoop]: Abstraction has 441 states and 566 transitions. [2021-11-07 07:43:18,601 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:43:18,601 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 566 transitions. [2021-11-07 07:43:18,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-07 07:43:18,602 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:43:18,602 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:43:18,631 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acce6ce3-13a1-4fcf-b98a-5e506be56433/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-07 07:43:18,816 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acce6ce3-13a1-4fcf-b98a-5e506be56433/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-11-07 07:43:18,817 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-07 07:43:18,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:43:18,817 INFO L85 PathProgramCache]: Analyzing trace with hash 2066160834, now seen corresponding path program 2 times [2021-11-07 07:43:18,817 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:43:18,817 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322707978] [2021-11-07 07:43:18,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:43:18,817 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:43:18,831 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 07:43:18,831 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1188042020] [2021-11-07 07:43:18,831 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 07:43:18,832 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:43:18,832 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acce6ce3-13a1-4fcf-b98a-5e506be56433/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:43:18,833 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acce6ce3-13a1-4fcf-b98a-5e506be56433/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:43:18,838 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acce6ce3-13a1-4fcf-b98a-5e506be56433/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process