./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/bitvector/jain_5-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/bitvector/jain_5-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU --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 4390bc6009c67e9f116102e14d5b47ef5baf8b56f04d96983747b62dd2236949 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-02 22:06:53,896 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-02 22:06:53,898 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-02 22:06:53,935 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-02 22:06:53,936 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-02 22:06:53,937 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-02 22:06:53,939 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-02 22:06:53,942 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-02 22:06:53,945 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-02 22:06:53,946 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-02 22:06:53,948 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-02 22:06:53,949 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-02 22:06:53,950 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-02 22:06:53,952 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-02 22:06:53,954 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-02 22:06:53,956 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-02 22:06:53,957 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-02 22:06:53,959 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-02 22:06:53,962 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-02 22:06:53,964 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-02 22:06:53,967 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-02 22:06:53,969 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-02 22:06:53,970 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-02 22:06:53,972 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-02 22:06:53,976 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-02 22:06:53,987 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-02 22:06:53,987 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-02 22:06:53,989 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-02 22:06:53,989 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-02 22:06:53,991 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-02 22:06:53,991 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-02 22:06:53,992 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-02 22:06:53,993 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-02 22:06:53,998 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-02 22:06:54,000 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-02 22:06:54,001 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-02 22:06:54,002 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-02 22:06:54,003 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-02 22:06:54,004 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-02 22:06:54,006 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-02 22:06:54,007 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-02 22:06:54,009 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/config/svcomp-Overflow-32bit-Automizer_Default.epf [2021-11-02 22:06:54,062 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-02 22:06:54,065 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-02 22:06:54,065 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-02 22:06:54,066 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-02 22:06:54,073 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-02 22:06:54,074 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-02 22:06:54,075 INFO L138 SettingsManager]: * Use SBE=true [2021-11-02 22:06:54,075 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-02 22:06:54,076 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-02 22:06:54,076 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-02 22:06:54,077 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-02 22:06:54,078 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-02 22:06:54,078 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-02 22:06:54,079 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-02 22:06:54,079 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-02 22:06:54,079 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-02 22:06:54,079 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-11-02 22:06:54,080 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-02 22:06:54,080 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-02 22:06:54,080 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-02 22:06:54,081 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-02 22:06:54,081 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-02 22:06:54,082 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-02 22:06:54,082 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-02 22:06:54,082 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 22:06:54,082 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-02 22:06:54,083 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-02 22:06:54,083 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-02 22:06:54,083 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-02 22:06:54,085 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-02 22:06:54,086 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-02 22:06:54,086 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-02 22:06:54,086 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_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4390bc6009c67e9f116102e14d5b47ef5baf8b56f04d96983747b62dd2236949 [2021-11-02 22:06:54,400 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-02 22:06:54,438 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-02 22:06:54,442 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-02 22:06:54,443 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-02 22:06:54,444 INFO L275 PluginConnector]: CDTParser initialized [2021-11-02 22:06:54,445 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/../../sv-benchmarks/c/bitvector/jain_5-1.c [2021-11-02 22:06:54,548 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/data/f1e73f61b/6e4b97e6a0854c07b3196c4ce099cf6d/FLAGd39975f45 [2021-11-02 22:06:55,041 INFO L306 CDTParser]: Found 1 translation units. [2021-11-02 22:06:55,042 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/sv-benchmarks/c/bitvector/jain_5-1.c [2021-11-02 22:06:55,060 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/data/f1e73f61b/6e4b97e6a0854c07b3196c4ce099cf6d/FLAGd39975f45 [2021-11-02 22:06:55,404 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/data/f1e73f61b/6e4b97e6a0854c07b3196c4ce099cf6d [2021-11-02 22:06:55,408 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-02 22:06:55,411 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-02 22:06:55,414 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-02 22:06:55,414 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-02 22:06:55,418 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-02 22:06:55,419 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:06:55" (1/1) ... [2021-11-02 22:06:55,422 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26d3a783 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:06:55, skipping insertion in model container [2021-11-02 22:06:55,423 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:06:55" (1/1) ... [2021-11-02 22:06:55,432 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-02 22:06:55,450 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 22:06:55,707 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_dd5d7ed3-1163-4c52-b28a-6163fac931f5/sv-benchmarks/c/bitvector/jain_5-1.c[360,373] [2021-11-02 22:06:55,721 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 22:06:55,736 INFO L203 MainTranslator]: Completed pre-run [2021-11-02 22:06:55,747 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_dd5d7ed3-1163-4c52-b28a-6163fac931f5/sv-benchmarks/c/bitvector/jain_5-1.c[360,373] [2021-11-02 22:06:55,750 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 22:06:55,764 INFO L208 MainTranslator]: Completed translation [2021-11-02 22:06:55,765 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:06:55 WrapperNode [2021-11-02 22:06:55,765 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-02 22:06:55,767 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-02 22:06:55,767 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-02 22:06:55,767 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-02 22:06:55,776 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:06:55" (1/1) ... [2021-11-02 22:06:55,785 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:06:55" (1/1) ... [2021-11-02 22:06:55,807 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-02 22:06:55,813 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-02 22:06:55,814 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-02 22:06:55,814 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-02 22:06:55,821 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:06:55" (1/1) ... [2021-11-02 22:06:55,821 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:06:55" (1/1) ... [2021-11-02 22:06:55,822 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:06:55" (1/1) ... [2021-11-02 22:06:55,823 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:06:55" (1/1) ... [2021-11-02 22:06:55,825 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:06:55" (1/1) ... [2021-11-02 22:06:55,829 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:06:55" (1/1) ... [2021-11-02 22:06:55,830 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:06:55" (1/1) ... [2021-11-02 22:06:55,832 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-02 22:06:55,833 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-02 22:06:55,833 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-02 22:06:55,833 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-02 22:06:55,834 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:06:55" (1/1) ... [2021-11-02 22:06:55,851 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 22:06:55,863 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:06:55,875 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-02 22:06:55,877 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-02 22:06:55,915 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-02 22:06:55,915 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-02 22:06:55,915 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-02 22:06:55,916 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-02 22:06:56,114 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-02 22:06:56,114 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-11-02 22:06:56,116 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:06:56 BoogieIcfgContainer [2021-11-02 22:06:56,116 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-02 22:06:56,118 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-02 22:06:56,119 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-02 22:06:56,122 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-02 22:06:56,123 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 10:06:55" (1/3) ... [2021-11-02 22:06:56,124 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5189809a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 10:06:56, skipping insertion in model container [2021-11-02 22:06:56,124 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:06:55" (2/3) ... [2021-11-02 22:06:56,125 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5189809a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 10:06:56, skipping insertion in model container [2021-11-02 22:06:56,125 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:06:56" (3/3) ... [2021-11-02 22:06:56,126 INFO L111 eAbstractionObserver]: Analyzing ICFG jain_5-1.c [2021-11-02 22:06:56,131 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-02 22:06:56,132 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-11-02 22:06:56,179 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-02 22:06:56,187 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 [2021-11-02 22:06:56,187 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-11-02 22:06:56,204 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 16 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:06:56,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-02 22:06:56,210 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:06:56,211 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-11-02 22:06:56,211 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:06:56,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:06:56,218 INFO L85 PathProgramCache]: Analyzing trace with hash 925796, now seen corresponding path program 1 times [2021-11-02 22:06:56,229 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:06:56,230 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342775948] [2021-11-02 22:06:56,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:06:56,231 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:06:56,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:06:56,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:06:56,471 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:06:56,471 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342775948] [2021-11-02 22:06:56,472 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342775948] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:06:56,472 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:06:56,473 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 22:06:56,475 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94285548] [2021-11-02 22:06:56,480 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:06:56,481 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:06:56,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:06:56,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:06:56,519 INFO L87 Difference]: Start difference. First operand has 17 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 16 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:06:56,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:06:56,595 INFO L93 Difference]: Finished difference Result 32 states and 40 transitions. [2021-11-02 22:06:56,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:06:56,598 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 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 4 [2021-11-02 22:06:56,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:06:56,607 INFO L225 Difference]: With dead ends: 32 [2021-11-02 22:06:56,607 INFO L226 Difference]: Without dead ends: 16 [2021-11-02 22:06:56,612 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:06:56,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-11-02 22:06:56,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 14. [2021-11-02 22:06:56,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 10 states have (on average 1.4) internal successors, (14), 13 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:06:56,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2021-11-02 22:06:56,650 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 4 [2021-11-02 22:06:56,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:06:56,652 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2021-11-02 22:06:56,652 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:06:56,653 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2021-11-02 22:06:56,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-02 22:06:56,653 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:06:56,654 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-02 22:06:56,654 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-02 22:06:56,655 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:06:56,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:06:56,660 INFO L85 PathProgramCache]: Analyzing trace with hash 28699721, now seen corresponding path program 1 times [2021-11-02 22:06:56,660 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:06:56,660 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130437394] [2021-11-02 22:06:56,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:06:56,661 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:06:56,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:06:56,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:06:56,758 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:06:56,758 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130437394] [2021-11-02 22:06:56,759 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130437394] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:06:56,759 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:06:56,759 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 22:06:56,760 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226148456] [2021-11-02 22:06:56,761 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:06:56,761 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:06:56,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:06:56,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:06:56,765 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:06:56,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:06:56,797 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2021-11-02 22:06:56,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:06:56,801 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 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 5 [2021-11-02 22:06:56,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:06:56,802 INFO L225 Difference]: With dead ends: 16 [2021-11-02 22:06:56,802 INFO L226 Difference]: Without dead ends: 15 [2021-11-02 22:06:56,803 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:06:56,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-11-02 22:06:56,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-11-02 22:06:56,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 14 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:06:56,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2021-11-02 22:06:56,808 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 5 [2021-11-02 22:06:56,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:06:56,809 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2021-11-02 22:06:56,809 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:06:56,809 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2021-11-02 22:06:56,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-02 22:06:56,810 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:06:56,810 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-02 22:06:56,810 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-02 22:06:56,811 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:06:56,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:06:56,812 INFO L85 PathProgramCache]: Analyzing trace with hash 889691398, now seen corresponding path program 1 times [2021-11-02 22:06:56,812 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:06:56,812 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509958344] [2021-11-02 22:06:56,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:06:56,813 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:06:56,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:06:56,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:06:56,843 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:06:56,843 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509958344] [2021-11-02 22:06:56,844 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509958344] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:06:56,844 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:06:56,844 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 22:06:56,845 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066785765] [2021-11-02 22:06:56,845 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:06:56,845 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:06:56,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:06:56,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:06:56,847 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:06:56,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:06:56,867 INFO L93 Difference]: Finished difference Result 18 states and 19 transitions. [2021-11-02 22:06:56,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:06:56,867 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-11-02 22:06:56,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:06:56,868 INFO L225 Difference]: With dead ends: 18 [2021-11-02 22:06:56,869 INFO L226 Difference]: Without dead ends: 17 [2021-11-02 22:06:56,869 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:06:56,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-11-02 22:06:56,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 16. [2021-11-02 22:06:56,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 15 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:06:56,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2021-11-02 22:06:56,875 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 6 [2021-11-02 22:06:56,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:06:56,876 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2021-11-02 22:06:56,876 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:06:56,876 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2021-11-02 22:06:56,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-02 22:06:56,877 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:06:56,877 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:06:56,877 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-02 22:06:56,878 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:06:56,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:06:56,879 INFO L85 PathProgramCache]: Analyzing trace with hash 1810629611, now seen corresponding path program 1 times [2021-11-02 22:06:56,880 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:06:56,881 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720446967] [2021-11-02 22:06:56,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:06:56,882 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:06:56,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:06:56,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:06:56,981 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:06:56,981 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720446967] [2021-11-02 22:06:56,982 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720446967] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:06:56,982 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:06:56,983 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 22:06:56,983 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429643169] [2021-11-02 22:06:56,983 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:06:56,984 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:06:56,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:06:56,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:06:56,985 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 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) [2021-11-02 22:06:57,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:06:57,010 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2021-11-02 22:06:57,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:06:57,010 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 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 [2021-11-02 22:06:57,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:06:57,011 INFO L225 Difference]: With dead ends: 16 [2021-11-02 22:06:57,012 INFO L226 Difference]: Without dead ends: 15 [2021-11-02 22:06:57,014 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:06:57,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-11-02 22:06:57,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-11-02 22:06:57,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 12 states have (on average 1.25) internal successors, (15), 14 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:06:57,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2021-11-02 22:06:57,019 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 7 [2021-11-02 22:06:57,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:06:57,019 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2021-11-02 22:06:57,020 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 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) [2021-11-02 22:06:57,030 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2021-11-02 22:06:57,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-02 22:06:57,032 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:06:57,032 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:06:57,033 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-02 22:06:57,034 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:06:57,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:06:57,036 INFO L85 PathProgramCache]: Analyzing trace with hash -27474033, now seen corresponding path program 1 times [2021-11-02 22:06:57,036 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:06:57,036 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396822348] [2021-11-02 22:06:57,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:06:57,037 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:06:57,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:06:57,173 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:06:57,173 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:06:57,174 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396822348] [2021-11-02 22:06:57,174 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396822348] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:06:57,174 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [958352152] [2021-11-02 22:06:57,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:06:57,175 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:06:57,175 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:06:57,196 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:06:57,216 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-02 22:06:57,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:06:57,256 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-02 22:06:57,262 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:06:57,502 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:06:57,502 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [958352152] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:06:57,502 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:06:57,503 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2021-11-02 22:06:57,503 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219871621] [2021-11-02 22:06:57,503 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-02 22:06:57,504 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:06:57,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-02 22:06:57,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2021-11-02 22:06:57,505 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:06:57,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:06:57,586 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2021-11-02 22:06:57,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-02 22:06:57,586 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 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 10 [2021-11-02 22:06:57,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:06:57,587 INFO L225 Difference]: With dead ends: 22 [2021-11-02 22:06:57,588 INFO L226 Difference]: Without dead ends: 21 [2021-11-02 22:06:57,588 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=42, Invalid=48, Unknown=0, NotChecked=0, Total=90 [2021-11-02 22:06:57,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-11-02 22:06:57,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 19. [2021-11-02 22:06:57,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 16 states have (on average 1.1875) internal successors, (19), 18 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:06:57,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2021-11-02 22:06:57,597 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 10 [2021-11-02 22:06:57,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:06:57,598 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2021-11-02 22:06:57,599 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:06:57,599 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2021-11-02 22:06:57,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-02 22:06:57,600 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:06:57,600 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:06:57,641 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-02 22:06:57,818 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:06:57,819 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:06:57,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:06:57,820 INFO L85 PathProgramCache]: Analyzing trace with hash -851694978, now seen corresponding path program 1 times [2021-11-02 22:06:57,820 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:06:57,820 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685426253] [2021-11-02 22:06:57,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:06:57,821 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:06:57,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:06:57,876 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:06:57,877 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:06:57,877 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685426253] [2021-11-02 22:06:57,877 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685426253] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:06:57,878 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [298788179] [2021-11-02 22:06:57,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:06:57,878 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:06:57,878 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:06:57,880 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:06:57,881 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-02 22:06:57,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:06:57,925 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-02 22:06:57,926 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:06:58,082 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:06:58,082 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [298788179] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:06:58,082 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-02 22:06:58,082 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2021-11-02 22:06:58,083 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079356969] [2021-11-02 22:06:58,084 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 22:06:58,085 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:06:58,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 22:06:58,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-11-02 22:06:58,086 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:06:58,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:06:58,137 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2021-11-02 22:06:58,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-02 22:06:58,138 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 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 11 [2021-11-02 22:06:58,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:06:58,141 INFO L225 Difference]: With dead ends: 19 [2021-11-02 22:06:58,141 INFO L226 Difference]: Without dead ends: 18 [2021-11-02 22:06:58,146 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-02 22:06:58,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-11-02 22:06:58,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2021-11-02 22:06:58,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 16 states have (on average 1.125) internal successors, (18), 17 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:06:58,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2021-11-02 22:06:58,154 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 11 [2021-11-02 22:06:58,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:06:58,154 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2021-11-02 22:06:58,155 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:06:58,155 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2021-11-02 22:06:58,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-02 22:06:58,156 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:06:58,156 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2021-11-02 22:06:58,192 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-02 22:06:58,372 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:06:58,372 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:06:58,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:06:58,373 INFO L85 PathProgramCache]: Analyzing trace with hash -632740495, now seen corresponding path program 1 times [2021-11-02 22:06:58,373 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:06:58,373 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502910688] [2021-11-02 22:06:58,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:06:58,373 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:06:58,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:06:58,410 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:06:58,411 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:06:58,411 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502910688] [2021-11-02 22:06:58,411 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502910688] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:06:58,412 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [404526041] [2021-11-02 22:06:58,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:06:58,412 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:06:58,412 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:06:58,417 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:06:58,440 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-02 22:06:58,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:06:58,477 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-02 22:06:58,478 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:06:58,538 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:06:58,538 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [404526041] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:06:58,539 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:06:58,539 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2021-11-02 22:06:58,540 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628323527] [2021-11-02 22:06:58,541 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 22:06:58,542 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:06:58,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 22:06:58,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-02 22:06:58,543 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:06:58,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:06:58,570 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2021-11-02 22:06:58,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 22:06:58,571 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 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 12 [2021-11-02 22:06:58,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:06:58,574 INFO L225 Difference]: With dead ends: 22 [2021-11-02 22:06:58,574 INFO L226 Difference]: Without dead ends: 21 [2021-11-02 22:06:58,575 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-02 22:06:58,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-11-02 22:06:58,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 20. [2021-11-02 22:06:58,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 19 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:06:58,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2021-11-02 22:06:58,587 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 12 [2021-11-02 22:06:58,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:06:58,587 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2021-11-02 22:06:58,587 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:06:58,588 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2021-11-02 22:06:58,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-02 22:06:58,589 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:06:58,589 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1] [2021-11-02 22:06:58,628 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-02 22:06:58,808 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:06:58,808 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:06:58,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:06:58,809 INFO L85 PathProgramCache]: Analyzing trace with hash -1652678022, now seen corresponding path program 2 times [2021-11-02 22:06:58,809 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:06:58,809 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530958528] [2021-11-02 22:06:58,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:06:58,810 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:06:58,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:06:58,880 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:06:58,880 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:06:58,881 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530958528] [2021-11-02 22:06:58,881 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530958528] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:06:58,881 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [626186373] [2021-11-02 22:06:58,881 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-02 22:06:58,882 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:06:58,882 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:06:58,883 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:06:58,908 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-02 22:06:58,951 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-02 22:06:58,951 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:06:58,952 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-02 22:06:58,953 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:06:59,158 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:06:59,160 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [626186373] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:06:59,160 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:06:59,160 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2021-11-02 22:06:59,161 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762406625] [2021-11-02 22:06:59,162 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-02 22:06:59,163 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:06:59,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-02 22:06:59,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=81, Unknown=0, NotChecked=0, Total=132 [2021-11-02 22:06:59,165 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand has 12 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 12 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:06:59,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:06:59,226 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2021-11-02 22:06:59,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-02 22:06:59,233 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 12 states have internal predecessors, (31), 0 states have call successors, (0), 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 16 [2021-11-02 22:06:59,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:06:59,236 INFO L225 Difference]: With dead ends: 26 [2021-11-02 22:06:59,236 INFO L226 Difference]: Without dead ends: 25 [2021-11-02 22:06:59,237 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=73, Invalid=109, Unknown=0, NotChecked=0, Total=182 [2021-11-02 22:06:59,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-11-02 22:06:59,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2021-11-02 22:06:59,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 22 states have (on average 1.0909090909090908) internal successors, (24), 23 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:06:59,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2021-11-02 22:06:59,246 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 16 [2021-11-02 22:06:59,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:06:59,246 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2021-11-02 22:06:59,247 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 12 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:06:59,247 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2021-11-02 22:06:59,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-02 22:06:59,248 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:06:59,248 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1] [2021-11-02 22:06:59,283 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-02 22:06:59,472 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:06:59,472 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:06:59,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:06:59,473 INFO L85 PathProgramCache]: Analyzing trace with hash 914321820, now seen corresponding path program 2 times [2021-11-02 22:06:59,473 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:06:59,473 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640546094] [2021-11-02 22:06:59,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:06:59,473 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:06:59,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:06:59,514 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:06:59,514 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:06:59,514 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640546094] [2021-11-02 22:06:59,514 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640546094] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:06:59,515 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [106635887] [2021-11-02 22:06:59,515 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-02 22:06:59,515 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:06:59,515 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:06:59,516 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:06:59,521 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-02 22:06:59,587 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-02 22:06:59,587 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:06:59,588 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-02 22:06:59,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:06:59,733 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:06:59,734 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [106635887] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:06:59,734 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:06:59,734 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6] total 9 [2021-11-02 22:06:59,734 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704131857] [2021-11-02 22:06:59,734 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-02 22:06:59,735 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:06:59,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-02 22:06:59,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-11-02 22:06:59,736 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand has 10 states, 9 states have (on average 3.888888888888889) internal successors, (35), 10 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:06:59,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:06:59,947 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2021-11-02 22:06:59,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-02 22:06:59,948 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.888888888888889) internal successors, (35), 10 states have internal predecessors, (35), 0 states have call successors, (0), 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 18 [2021-11-02 22:06:59,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:06:59,949 INFO L225 Difference]: With dead ends: 31 [2021-11-02 22:06:59,949 INFO L226 Difference]: Without dead ends: 30 [2021-11-02 22:06:59,949 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=94, Invalid=212, Unknown=0, NotChecked=0, Total=306 [2021-11-02 22:06:59,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-11-02 22:06:59,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 23. [2021-11-02 22:06:59,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.0454545454545454) internal successors, (23), 22 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:06:59,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2021-11-02 22:06:59,953 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 18 [2021-11-02 22:06:59,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:06:59,953 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2021-11-02 22:06:59,953 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.888888888888889) internal successors, (35), 10 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:06:59,954 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2021-11-02 22:06:59,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-02 22:06:59,954 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:06:59,954 INFO L513 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 1, 1, 1] [2021-11-02 22:06:59,993 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-02 22:07:00,180 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-11-02 22:07:00,181 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:07:00,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:07:00,181 INFO L85 PathProgramCache]: Analyzing trace with hash 537682213, now seen corresponding path program 3 times [2021-11-02 22:07:00,181 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:07:00,181 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049628956] [2021-11-02 22:07:00,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:07:00,181 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:07:00,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:07:00,289 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:07:00,289 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:07:00,290 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049628956] [2021-11-02 22:07:00,294 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049628956] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:07:00,294 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [252303136] [2021-11-02 22:07:00,294 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-02 22:07:00,294 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:07:00,295 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:07:00,305 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:07:00,306 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-02 22:07:00,375 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-11-02 22:07:00,376 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:07:00,377 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-02 22:07:00,378 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:07:00,621 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:07:00,622 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [252303136] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:07:00,622 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:07:00,622 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2021-11-02 22:07:00,622 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157835376] [2021-11-02 22:07:00,623 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-02 22:07:00,623 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:07:00,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-02 22:07:00,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=156, Unknown=0, NotChecked=0, Total=240 [2021-11-02 22:07:00,624 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand has 16 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:07:00,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:07:00,719 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions. [2021-11-02 22:07:00,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-02 22:07:00,719 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 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 22 [2021-11-02 22:07:00,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:07:00,720 INFO L225 Difference]: With dead ends: 31 [2021-11-02 22:07:00,720 INFO L226 Difference]: Without dead ends: 30 [2021-11-02 22:07:00,721 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=126, Invalid=216, Unknown=0, NotChecked=0, Total=342 [2021-11-02 22:07:00,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-11-02 22:07:00,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2021-11-02 22:07:00,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.0357142857142858) internal successors, (29), 28 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:07:00,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2021-11-02 22:07:00,724 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 22 [2021-11-02 22:07:00,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:07:00,725 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2021-11-02 22:07:00,725 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:07:00,725 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2021-11-02 22:07:00,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-02 22:07:00,726 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:07:00,726 INFO L513 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 1, 1, 1] [2021-11-02 22:07:00,762 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-02 22:07:00,940 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-02 22:07:00,941 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:07:00,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:07:00,942 INFO L85 PathProgramCache]: Analyzing trace with hash 406696848, now seen corresponding path program 4 times [2021-11-02 22:07:00,942 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:07:00,942 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481152301] [2021-11-02 22:07:00,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:07:00,942 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:07:00,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:07:01,093 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:07:01,093 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:07:01,094 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481152301] [2021-11-02 22:07:01,094 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481152301] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:07:01,094 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1759521267] [2021-11-02 22:07:01,094 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-02 22:07:01,094 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:07:01,094 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:07:01,095 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:07:01,101 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-02 22:07:01,185 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-02 22:07:01,185 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:07:01,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-02 22:07:01,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:07:01,491 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:07:01,492 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1759521267] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:07:01,492 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:07:01,492 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2021-11-02 22:07:01,492 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446080909] [2021-11-02 22:07:01,493 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-02 22:07:01,493 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:07:01,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-02 22:07:01,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=256, Unknown=0, NotChecked=0, Total=380 [2021-11-02 22:07:01,495 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand has 20 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 20 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:07:01,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:07:01,608 INFO L93 Difference]: Finished difference Result 37 states and 37 transitions. [2021-11-02 22:07:01,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-02 22:07:01,610 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 20 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-11-02 22:07:01,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:07:01,611 INFO L225 Difference]: With dead ends: 37 [2021-11-02 22:07:01,611 INFO L226 Difference]: Without dead ends: 36 [2021-11-02 22:07:01,612 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=192, Invalid=360, Unknown=0, NotChecked=0, Total=552 [2021-11-02 22:07:01,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-11-02 22:07:01,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2021-11-02 22:07:01,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.0294117647058822) internal successors, (35), 34 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:07:01,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 35 transitions. [2021-11-02 22:07:01,625 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 35 transitions. Word has length 28 [2021-11-02 22:07:01,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:07:01,627 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 35 transitions. [2021-11-02 22:07:01,627 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 20 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:07:01,628 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions. [2021-11-02 22:07:01,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-02 22:07:01,628 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:07:01,629 INFO L513 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 1, 1, 1] [2021-11-02 22:07:01,667 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-02 22:07:01,841 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-11-02 22:07:01,842 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:07:01,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:07:01,842 INFO L85 PathProgramCache]: Analyzing trace with hash 1122257339, now seen corresponding path program 5 times [2021-11-02 22:07:01,842 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:07:01,842 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622055285] [2021-11-02 22:07:01,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:07:01,842 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:07:01,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:07:02,009 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:07:02,009 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:07:02,009 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622055285] [2021-11-02 22:07:02,010 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622055285] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:07:02,010 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [587222447] [2021-11-02 22:07:02,010 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-02 22:07:02,010 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:07:02,010 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:07:02,011 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:07:02,012 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-02 22:07:02,140 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-11-02 22:07:02,141 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:07:02,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-02 22:07:02,144 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:07:02,552 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:07:02,552 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [587222447] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:07:02,552 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:07:02,553 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 23 [2021-11-02 22:07:02,553 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161278181] [2021-11-02 22:07:02,557 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-11-02 22:07:02,558 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:07:02,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-11-02 22:07:02,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=381, Unknown=0, NotChecked=0, Total=552 [2021-11-02 22:07:02,559 INFO L87 Difference]: Start difference. First operand 35 states and 35 transitions. Second operand has 24 states, 23 states have (on average 2.9130434782608696) internal successors, (67), 24 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:07:02,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:07:02,722 INFO L93 Difference]: Finished difference Result 43 states and 43 transitions. [2021-11-02 22:07:02,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-02 22:07:02,723 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 2.9130434782608696) internal successors, (67), 24 states have internal predecessors, (67), 0 states have call successors, (0), 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 34 [2021-11-02 22:07:02,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:07:02,727 INFO L225 Difference]: With dead ends: 43 [2021-11-02 22:07:02,727 INFO L226 Difference]: Without dead ends: 42 [2021-11-02 22:07:02,727 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 249 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=271, Invalid=541, Unknown=0, NotChecked=0, Total=812 [2021-11-02 22:07:02,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-11-02 22:07:02,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2021-11-02 22:07:02,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 40 states have (on average 1.025) internal successors, (41), 40 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:07:02,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 41 transitions. [2021-11-02 22:07:02,737 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 41 transitions. Word has length 34 [2021-11-02 22:07:02,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:07:02,738 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 41 transitions. [2021-11-02 22:07:02,738 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 2.9130434782608696) internal successors, (67), 24 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:07:02,738 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 41 transitions. [2021-11-02 22:07:02,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-02 22:07:02,739 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:07:02,739 INFO L513 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 1, 1, 1] [2021-11-02 22:07:02,775 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-02 22:07:02,940 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-11-02 22:07:02,940 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:07:02,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:07:02,940 INFO L85 PathProgramCache]: Analyzing trace with hash 577655718, now seen corresponding path program 6 times [2021-11-02 22:07:02,940 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:07:02,941 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275425475] [2021-11-02 22:07:02,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:07:02,941 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:07:02,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:07:03,124 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 102 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:07:03,124 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:07:03,124 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275425475] [2021-11-02 22:07:03,124 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275425475] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:07:03,124 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1032331407] [2021-11-02 22:07:03,125 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-02 22:07:03,125 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:07:03,125 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:07:03,132 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:07:03,134 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-02 22:07:03,258 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-11-02 22:07:03,258 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:07:03,259 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-02 22:07:03,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:07:03,680 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 102 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:07:03,680 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1032331407] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:07:03,681 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:07:03,681 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 27 [2021-11-02 22:07:03,681 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348254016] [2021-11-02 22:07:03,682 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-11-02 22:07:03,682 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:07:03,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-11-02 22:07:03,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=225, Invalid=531, Unknown=0, NotChecked=0, Total=756 [2021-11-02 22:07:03,684 INFO L87 Difference]: Start difference. First operand 41 states and 41 transitions. Second operand has 28 states, 27 states have (on average 2.925925925925926) internal successors, (79), 28 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:07:03,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:07:03,842 INFO L93 Difference]: Finished difference Result 49 states and 49 transitions. [2021-11-02 22:07:03,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-02 22:07:03,842 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 2.925925925925926) internal successors, (79), 28 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2021-11-02 22:07:03,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:07:03,843 INFO L225 Difference]: With dead ends: 49 [2021-11-02 22:07:03,843 INFO L226 Difference]: Without dead ends: 48 [2021-11-02 22:07:03,844 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 359 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=363, Invalid=759, Unknown=0, NotChecked=0, Total=1122 [2021-11-02 22:07:03,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2021-11-02 22:07:03,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 47. [2021-11-02 22:07:03,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 46 states have (on average 1.0217391304347827) internal successors, (47), 46 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:07:03,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 47 transitions. [2021-11-02 22:07:03,849 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 47 transitions. Word has length 40 [2021-11-02 22:07:03,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:07:03,849 INFO L470 AbstractCegarLoop]: Abstraction has 47 states and 47 transitions. [2021-11-02 22:07:03,850 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 2.925925925925926) internal successors, (79), 28 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:07:03,850 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 47 transitions. [2021-11-02 22:07:03,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-02 22:07:03,851 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:07:03,851 INFO L513 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 1, 1, 1] [2021-11-02 22:07:03,890 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-02 22:07:04,080 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-11-02 22:07:04,080 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:07:04,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:07:04,081 INFO L85 PathProgramCache]: Analyzing trace with hash 1508245841, now seen corresponding path program 7 times [2021-11-02 22:07:04,081 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:07:04,081 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135616814] [2021-11-02 22:07:04,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:07:04,081 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:07:04,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:07:04,307 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 0 proven. 140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:07:04,307 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:07:04,307 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135616814] [2021-11-02 22:07:04,307 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135616814] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:07:04,307 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1082526043] [2021-11-02 22:07:04,308 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-02 22:07:04,308 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:07:04,308 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:07:04,309 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:07:04,324 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-02 22:07:04,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:07:04,458 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-02 22:07:04,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:07:04,947 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 0 proven. 140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:07:04,947 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1082526043] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:07:04,947 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:07:04,947 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 31 [2021-11-02 22:07:04,947 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802718545] [2021-11-02 22:07:04,948 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-11-02 22:07:04,948 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:07:04,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-11-02 22:07:04,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=286, Invalid=706, Unknown=0, NotChecked=0, Total=992 [2021-11-02 22:07:04,949 INFO L87 Difference]: Start difference. First operand 47 states and 47 transitions. Second operand has 32 states, 31 states have (on average 2.935483870967742) internal successors, (91), 32 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:07:05,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:07:05,140 INFO L93 Difference]: Finished difference Result 55 states and 55 transitions. [2021-11-02 22:07:05,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-02 22:07:05,141 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 2.935483870967742) internal successors, (91), 32 states have internal predecessors, (91), 0 states have call successors, (0), 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 46 [2021-11-02 22:07:05,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:07:05,141 INFO L225 Difference]: With dead ends: 55 [2021-11-02 22:07:05,141 INFO L226 Difference]: Without dead ends: 54 [2021-11-02 22:07:05,142 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 489 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=468, Invalid=1014, Unknown=0, NotChecked=0, Total=1482 [2021-11-02 22:07:05,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2021-11-02 22:07:05,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 53. [2021-11-02 22:07:05,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 52 states have (on average 1.0192307692307692) internal successors, (53), 52 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:07:05,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 53 transitions. [2021-11-02 22:07:05,146 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 53 transitions. Word has length 46 [2021-11-02 22:07:05,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:07:05,147 INFO L470 AbstractCegarLoop]: Abstraction has 53 states and 53 transitions. [2021-11-02 22:07:05,147 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 2.935483870967742) internal successors, (91), 32 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:07:05,147 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 53 transitions. [2021-11-02 22:07:05,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-02 22:07:05,148 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:07:05,148 INFO L513 BasicCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 1, 1, 1] [2021-11-02 22:07:05,182 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-02 22:07:05,364 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-11-02 22:07:05,364 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:07:05,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:07:05,365 INFO L85 PathProgramCache]: Analyzing trace with hash -940473668, now seen corresponding path program 8 times [2021-11-02 22:07:05,365 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:07:05,365 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431844070] [2021-11-02 22:07:05,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:07:05,365 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:07:05,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:07:05,604 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 0 proven. 184 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:07:05,604 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:07:05,604 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431844070] [2021-11-02 22:07:05,604 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431844070] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:07:05,605 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [229533460] [2021-11-02 22:07:05,605 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-02 22:07:05,605 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:07:05,605 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:07:05,608 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:07:05,631 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-02 22:07:05,819 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-02 22:07:05,819 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:07:05,820 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-02 22:07:05,823 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:07:06,394 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 0 proven. 184 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:07:06,394 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [229533460] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:07:06,394 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:07:06,394 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 35 [2021-11-02 22:07:06,394 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099488366] [2021-11-02 22:07:06,395 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2021-11-02 22:07:06,395 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:07:06,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-11-02 22:07:06,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=354, Invalid=906, Unknown=0, NotChecked=0, Total=1260 [2021-11-02 22:07:06,397 INFO L87 Difference]: Start difference. First operand 53 states and 53 transitions. Second operand has 36 states, 35 states have (on average 2.942857142857143) internal successors, (103), 36 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:07:06,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:07:06,610 INFO L93 Difference]: Finished difference Result 61 states and 61 transitions. [2021-11-02 22:07:06,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-02 22:07:06,612 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 35 states have (on average 2.942857142857143) internal successors, (103), 36 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-11-02 22:07:06,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:07:06,613 INFO L225 Difference]: With dead ends: 61 [2021-11-02 22:07:06,613 INFO L226 Difference]: Without dead ends: 60 [2021-11-02 22:07:06,614 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 639 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=586, Invalid=1306, Unknown=0, NotChecked=0, Total=1892 [2021-11-02 22:07:06,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-11-02 22:07:06,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 59. [2021-11-02 22:07:06,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 58 states have (on average 1.0172413793103448) internal successors, (59), 58 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:07:06,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 59 transitions. [2021-11-02 22:07:06,618 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 59 transitions. Word has length 52 [2021-11-02 22:07:06,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:07:06,619 INFO L470 AbstractCegarLoop]: Abstraction has 59 states and 59 transitions. [2021-11-02 22:07:06,619 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 35 states have (on average 2.942857142857143) internal successors, (103), 36 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:07:06,619 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 59 transitions. [2021-11-02 22:07:06,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-02 22:07:06,625 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:07:06,625 INFO L513 BasicCegarLoop]: trace histogram [10, 9, 9, 9, 9, 9, 1, 1, 1] [2021-11-02 22:07:06,664 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-02 22:07:06,825 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:07:06,826 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:07:06,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:07:06,826 INFO L85 PathProgramCache]: Analyzing trace with hash 1641220071, now seen corresponding path program 9 times [2021-11-02 22:07:06,826 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:07:06,826 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188377128] [2021-11-02 22:07:06,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:07:06,827 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:07:06,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:07:07,091 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 0 proven. 234 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:07:07,092 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:07:07,092 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188377128] [2021-11-02 22:07:07,092 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188377128] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:07:07,092 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1881424883] [2021-11-02 22:07:07,092 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-02 22:07:07,092 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:07:07,093 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:07:07,103 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:07:07,103 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-02 22:07:07,328 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2021-11-02 22:07:07,329 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:07:07,330 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-02 22:07:07,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:07:08,066 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 0 proven. 234 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:07:08,067 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1881424883] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:07:08,067 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:07:08,067 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 39 [2021-11-02 22:07:08,067 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742852299] [2021-11-02 22:07:08,068 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2021-11-02 22:07:08,068 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:07:08,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-11-02 22:07:08,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=429, Invalid=1131, Unknown=0, NotChecked=0, Total=1560 [2021-11-02 22:07:08,070 INFO L87 Difference]: Start difference. First operand 59 states and 59 transitions. Second operand has 40 states, 39 states have (on average 2.948717948717949) internal successors, (115), 40 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:07:08,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:07:08,320 INFO L93 Difference]: Finished difference Result 67 states and 67 transitions. [2021-11-02 22:07:08,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-02 22:07:08,322 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 39 states have (on average 2.948717948717949) internal successors, (115), 40 states have internal predecessors, (115), 0 states have call successors, (0), 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 [2021-11-02 22:07:08,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:07:08,322 INFO L225 Difference]: With dead ends: 67 [2021-11-02 22:07:08,322 INFO L226 Difference]: Without dead ends: 66 [2021-11-02 22:07:08,324 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 809 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=717, Invalid=1635, Unknown=0, NotChecked=0, Total=2352 [2021-11-02 22:07:08,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2021-11-02 22:07:08,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 65. [2021-11-02 22:07:08,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 64 states have (on average 1.015625) internal successors, (65), 64 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:07:08,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 65 transitions. [2021-11-02 22:07:08,328 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 65 transitions. Word has length 58 [2021-11-02 22:07:08,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:07:08,328 INFO L470 AbstractCegarLoop]: Abstraction has 65 states and 65 transitions. [2021-11-02 22:07:08,328 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 39 states have (on average 2.948717948717949) internal successors, (115), 40 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:07:08,329 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 65 transitions. [2021-11-02 22:07:08,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-02 22:07:08,329 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:07:08,330 INFO L513 BasicCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 1, 1, 1] [2021-11-02 22:07:08,368 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-02 22:07:08,556 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-11-02 22:07:08,556 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:07:08,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:07:08,557 INFO L85 PathProgramCache]: Analyzing trace with hash -831995694, now seen corresponding path program 10 times [2021-11-02 22:07:08,557 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:07:08,557 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609952543] [2021-11-02 22:07:08,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:07:08,557 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:07:08,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:07:08,909 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 0 proven. 290 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:07:08,909 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:07:08,909 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609952543] [2021-11-02 22:07:08,909 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609952543] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:07:08,909 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1955809499] [2021-11-02 22:07:08,910 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-02 22:07:08,910 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:07:08,910 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:07:08,914 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:07:08,935 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-02 22:07:09,177 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-02 22:07:09,177 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:07:09,179 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-02 22:07:09,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:07:10,119 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 0 proven. 290 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:07:10,120 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1955809499] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:07:10,120 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:07:10,120 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 43 [2021-11-02 22:07:10,120 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342654958] [2021-11-02 22:07:10,121 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2021-11-02 22:07:10,121 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:07:10,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2021-11-02 22:07:10,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=511, Invalid=1381, Unknown=0, NotChecked=0, Total=1892 [2021-11-02 22:07:10,122 INFO L87 Difference]: Start difference. First operand 65 states and 65 transitions. Second operand has 44 states, 43 states have (on average 2.953488372093023) internal successors, (127), 44 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:07:10,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:07:10,423 INFO L93 Difference]: Finished difference Result 73 states and 73 transitions. [2021-11-02 22:07:10,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-02 22:07:10,423 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 43 states have (on average 2.953488372093023) internal successors, (127), 44 states have internal predecessors, (127), 0 states have call successors, (0), 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 [2021-11-02 22:07:10,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:07:10,424 INFO L225 Difference]: With dead ends: 73 [2021-11-02 22:07:10,424 INFO L226 Difference]: Without dead ends: 72 [2021-11-02 22:07:10,426 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 999 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=861, Invalid=2001, Unknown=0, NotChecked=0, Total=2862 [2021-11-02 22:07:10,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2021-11-02 22:07:10,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 71. [2021-11-02 22:07:10,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 70 states have (on average 1.0142857142857142) internal successors, (71), 70 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) [2021-11-02 22:07:10,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 71 transitions. [2021-11-02 22:07:10,431 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 71 transitions. Word has length 64 [2021-11-02 22:07:10,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:07:10,431 INFO L470 AbstractCegarLoop]: Abstraction has 71 states and 71 transitions. [2021-11-02 22:07:10,431 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 43 states have (on average 2.953488372093023) internal successors, (127), 44 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:07:10,431 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 71 transitions. [2021-11-02 22:07:10,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-02 22:07:10,432 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:07:10,432 INFO L513 BasicCegarLoop]: trace histogram [12, 11, 11, 11, 11, 11, 1, 1, 1] [2021-11-02 22:07:10,459 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-11-02 22:07:10,645 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-11-02 22:07:10,645 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:07:10,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:07:10,645 INFO L85 PathProgramCache]: Analyzing trace with hash -1054024323, now seen corresponding path program 11 times [2021-11-02 22:07:10,645 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:07:10,646 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345164140] [2021-11-02 22:07:10,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:07:10,646 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:07:10,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:07:10,960 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 0 proven. 352 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:07:10,960 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:07:10,961 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345164140] [2021-11-02 22:07:10,961 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345164140] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:07:10,964 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [416867520] [2021-11-02 22:07:10,964 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-02 22:07:10,964 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:07:10,965 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:07:10,965 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:07:10,968 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-02 22:07:11,284 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2021-11-02 22:07:11,284 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:07:11,286 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-02 22:07:11,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:07:12,180 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 0 proven. 352 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:07:12,180 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [416867520] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:07:12,180 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:07:12,180 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 47 [2021-11-02 22:07:12,181 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93562189] [2021-11-02 22:07:12,183 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2021-11-02 22:07:12,183 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:07:12,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-11-02 22:07:12,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=600, Invalid=1656, Unknown=0, NotChecked=0, Total=2256 [2021-11-02 22:07:12,191 INFO L87 Difference]: Start difference. First operand 71 states and 71 transitions. Second operand has 48 states, 47 states have (on average 2.9574468085106385) internal successors, (139), 48 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:07:12,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:07:12,535 INFO L93 Difference]: Finished difference Result 79 states and 79 transitions. [2021-11-02 22:07:12,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-02 22:07:12,536 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 2.9574468085106385) internal successors, (139), 48 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2021-11-02 22:07:12,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:07:12,537 INFO L225 Difference]: With dead ends: 79 [2021-11-02 22:07:12,537 INFO L226 Difference]: Without dead ends: 78 [2021-11-02 22:07:12,539 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1209 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1018, Invalid=2404, Unknown=0, NotChecked=0, Total=3422 [2021-11-02 22:07:12,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-11-02 22:07:12,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 77. [2021-11-02 22:07:12,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 76 states have (on average 1.013157894736842) internal successors, (77), 76 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:07:12,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 77 transitions. [2021-11-02 22:07:12,545 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 77 transitions. Word has length 70 [2021-11-02 22:07:12,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:07:12,545 INFO L470 AbstractCegarLoop]: Abstraction has 77 states and 77 transitions. [2021-11-02 22:07:12,546 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 2.9574468085106385) internal successors, (139), 48 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:07:12,546 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 77 transitions. [2021-11-02 22:07:12,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-02 22:07:12,547 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:07:12,547 INFO L513 BasicCegarLoop]: trace histogram [13, 12, 12, 12, 12, 12, 1, 1, 1] [2021-11-02 22:07:12,592 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-11-02 22:07:12,760 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-11-02 22:07:12,760 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:07:12,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:07:12,761 INFO L85 PathProgramCache]: Analyzing trace with hash 355831272, now seen corresponding path program 12 times [2021-11-02 22:07:12,761 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:07:12,761 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443297090] [2021-11-02 22:07:12,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:07:12,761 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:07:12,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:07:13,103 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 420 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:07:13,103 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:07:13,103 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443297090] [2021-11-02 22:07:13,103 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443297090] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:07:13,103 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1844599297] [2021-11-02 22:07:13,103 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-02 22:07:13,103 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:07:13,103 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:07:13,104 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:07:13,108 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-02 22:07:13,450 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2021-11-02 22:07:13,450 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:07:13,452 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 27 conjunts are in the unsatisfiable core [2021-11-02 22:07:13,454 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:07:14,388 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 420 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:07:14,389 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1844599297] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:07:14,389 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:07:14,389 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 51 [2021-11-02 22:07:14,389 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12096030] [2021-11-02 22:07:14,390 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2021-11-02 22:07:14,390 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:07:14,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2021-11-02 22:07:14,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=696, Invalid=1956, Unknown=0, NotChecked=0, Total=2652 [2021-11-02 22:07:14,392 INFO L87 Difference]: Start difference. First operand 77 states and 77 transitions. Second operand has 52 states, 51 states have (on average 2.9607843137254903) internal successors, (151), 52 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:07:14,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:07:14,743 INFO L93 Difference]: Finished difference Result 85 states and 85 transitions. [2021-11-02 22:07:14,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-11-02 22:07:14,743 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 51 states have (on average 2.9607843137254903) internal successors, (151), 52 states have internal predecessors, (151), 0 states have call successors, (0), 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 76 [2021-11-02 22:07:14,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:07:14,745 INFO L225 Difference]: With dead ends: 85 [2021-11-02 22:07:14,745 INFO L226 Difference]: Without dead ends: 84 [2021-11-02 22:07:14,747 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1439 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1188, Invalid=2844, Unknown=0, NotChecked=0, Total=4032 [2021-11-02 22:07:14,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2021-11-02 22:07:14,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 83. [2021-11-02 22:07:14,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 82 states have (on average 1.0121951219512195) internal successors, (83), 82 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:07:14,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 83 transitions. [2021-11-02 22:07:14,753 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 83 transitions. Word has length 76 [2021-11-02 22:07:14,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:07:14,754 INFO L470 AbstractCegarLoop]: Abstraction has 83 states and 83 transitions. [2021-11-02 22:07:14,754 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 51 states have (on average 2.9607843137254903) internal successors, (151), 52 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:07:14,754 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 83 transitions. [2021-11-02 22:07:14,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-02 22:07:14,755 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:07:14,755 INFO L513 BasicCegarLoop]: trace histogram [14, 13, 13, 13, 13, 13, 1, 1, 1] [2021-11-02 22:07:14,792 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-11-02 22:07:14,955 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:07:14,956 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:07:14,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:07:14,956 INFO L85 PathProgramCache]: Analyzing trace with hash -1472921069, now seen corresponding path program 13 times [2021-11-02 22:07:14,956 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:07:14,956 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85451153] [2021-11-02 22:07:14,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:07:14,957 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:07:14,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:07:15,366 INFO L134 CoverageAnalysis]: Checked inductivity of 494 backedges. 0 proven. 494 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:07:15,366 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:07:15,366 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85451153] [2021-11-02 22:07:15,366 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85451153] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:07:15,366 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [189159945] [2021-11-02 22:07:15,366 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-02 22:07:15,367 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:07:15,367 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:07:15,369 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:07:15,386 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-11-02 22:07:15,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:07:15,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 29 conjunts are in the unsatisfiable core [2021-11-02 22:07:15,753 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:07:16,769 INFO L134 CoverageAnalysis]: Checked inductivity of 494 backedges. 0 proven. 494 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:07:16,769 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [189159945] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:07:16,769 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:07:16,769 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 55 [2021-11-02 22:07:16,769 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057043436] [2021-11-02 22:07:16,770 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2021-11-02 22:07:16,770 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:07:16,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2021-11-02 22:07:16,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=799, Invalid=2281, Unknown=0, NotChecked=0, Total=3080 [2021-11-02 22:07:16,772 INFO L87 Difference]: Start difference. First operand 83 states and 83 transitions. Second operand has 56 states, 55 states have (on average 2.963636363636364) internal successors, (163), 56 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:07:17,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:07:17,140 INFO L93 Difference]: Finished difference Result 91 states and 91 transitions. [2021-11-02 22:07:17,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-11-02 22:07:17,141 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 55 states have (on average 2.963636363636364) internal successors, (163), 56 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2021-11-02 22:07:17,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:07:17,142 INFO L225 Difference]: With dead ends: 91 [2021-11-02 22:07:17,142 INFO L226 Difference]: Without dead ends: 90 [2021-11-02 22:07:17,144 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1689 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1371, Invalid=3321, Unknown=0, NotChecked=0, Total=4692 [2021-11-02 22:07:17,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2021-11-02 22:07:17,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 89. [2021-11-02 22:07:17,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 88 states have (on average 1.0113636363636365) internal successors, (89), 88 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:07:17,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 89 transitions. [2021-11-02 22:07:17,149 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 89 transitions. Word has length 82 [2021-11-02 22:07:17,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:07:17,149 INFO L470 AbstractCegarLoop]: Abstraction has 89 states and 89 transitions. [2021-11-02 22:07:17,150 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 55 states have (on average 2.963636363636364) internal successors, (163), 56 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:07:17,150 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 89 transitions. [2021-11-02 22:07:17,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-02 22:07:17,151 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:07:17,151 INFO L513 BasicCegarLoop]: trace histogram [15, 14, 14, 14, 14, 14, 1, 1, 1] [2021-11-02 22:07:17,180 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-11-02 22:07:17,372 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:07:17,372 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:07:17,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:07:17,373 INFO L85 PathProgramCache]: Analyzing trace with hash -176592386, now seen corresponding path program 14 times [2021-11-02 22:07:17,373 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:07:17,373 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522355822] [2021-11-02 22:07:17,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:07:17,373 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:07:17,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:07:17,812 INFO L134 CoverageAnalysis]: Checked inductivity of 574 backedges. 0 proven. 574 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:07:17,813 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:07:17,813 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522355822] [2021-11-02 22:07:17,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522355822] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:07:17,813 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [302528356] [2021-11-02 22:07:17,813 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-02 22:07:17,813 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:07:17,813 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:07:17,824 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:07:17,826 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-11-02 22:07:18,226 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-02 22:07:18,227 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:07:18,228 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 31 conjunts are in the unsatisfiable core [2021-11-02 22:07:18,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:07:19,410 INFO L134 CoverageAnalysis]: Checked inductivity of 574 backedges. 0 proven. 574 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:07:19,410 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [302528356] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:07:19,410 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:07:19,411 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 59 [2021-11-02 22:07:19,411 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980269515] [2021-11-02 22:07:19,411 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2021-11-02 22:07:19,411 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:07:19,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2021-11-02 22:07:19,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=909, Invalid=2631, Unknown=0, NotChecked=0, Total=3540 [2021-11-02 22:07:19,414 INFO L87 Difference]: Start difference. First operand 89 states and 89 transitions. Second operand has 60 states, 59 states have (on average 2.9661016949152543) internal successors, (175), 60 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:07:19,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:07:19,789 INFO L93 Difference]: Finished difference Result 97 states and 97 transitions. [2021-11-02 22:07:19,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-02 22:07:19,789 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 59 states have (on average 2.9661016949152543) internal successors, (175), 60 states have internal predecessors, (175), 0 states have call successors, (0), 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 88 [2021-11-02 22:07:19,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:07:19,790 INFO L225 Difference]: With dead ends: 97 [2021-11-02 22:07:19,790 INFO L226 Difference]: Without dead ends: 96 [2021-11-02 22:07:19,792 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1959 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1567, Invalid=3835, Unknown=0, NotChecked=0, Total=5402 [2021-11-02 22:07:19,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2021-11-02 22:07:19,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 95. [2021-11-02 22:07:19,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 94 states have (on average 1.0106382978723405) internal successors, (95), 94 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:07:19,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 95 transitions. [2021-11-02 22:07:19,796 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 95 transitions. Word has length 88 [2021-11-02 22:07:19,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:07:19,796 INFO L470 AbstractCegarLoop]: Abstraction has 95 states and 95 transitions. [2021-11-02 22:07:19,796 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 59 states have (on average 2.9661016949152543) internal successors, (175), 60 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:07:19,796 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 95 transitions. [2021-11-02 22:07:19,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-02 22:07:19,797 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:07:19,797 INFO L513 BasicCegarLoop]: trace histogram [16, 15, 15, 15, 15, 15, 1, 1, 1] [2021-11-02 22:07:19,822 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2021-11-02 22:07:19,997 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:07:19,998 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:07:19,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:07:19,998 INFO L85 PathProgramCache]: Analyzing trace with hash 1894577577, now seen corresponding path program 15 times [2021-11-02 22:07:19,998 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:07:19,998 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061502855] [2021-11-02 22:07:19,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:07:19,998 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:07:20,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:07:20,523 INFO L134 CoverageAnalysis]: Checked inductivity of 660 backedges. 0 proven. 660 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:07:20,523 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:07:20,524 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061502855] [2021-11-02 22:07:20,524 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061502855] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:07:20,524 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [388733829] [2021-11-02 22:07:20,524 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-02 22:07:20,524 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:07:20,524 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:07:20,528 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:07:20,548 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-11-02 22:07:21,083 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2021-11-02 22:07:21,083 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:07:21,085 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 33 conjunts are in the unsatisfiable core [2021-11-02 22:07:21,087 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:07:22,362 INFO L134 CoverageAnalysis]: Checked inductivity of 660 backedges. 0 proven. 660 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:07:22,362 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [388733829] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:07:22,362 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:07:22,362 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 63 [2021-11-02 22:07:22,363 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72881880] [2021-11-02 22:07:22,363 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2021-11-02 22:07:22,363 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:07:22,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2021-11-02 22:07:22,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1026, Invalid=3006, Unknown=0, NotChecked=0, Total=4032 [2021-11-02 22:07:22,365 INFO L87 Difference]: Start difference. First operand 95 states and 95 transitions. Second operand has 64 states, 63 states have (on average 2.9682539682539684) internal successors, (187), 64 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:07:22,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:07:22,809 INFO L93 Difference]: Finished difference Result 103 states and 103 transitions. [2021-11-02 22:07:22,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-11-02 22:07:22,810 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 63 states have (on average 2.9682539682539684) internal successors, (187), 64 states have internal predecessors, (187), 0 states have call successors, (0), 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 94 [2021-11-02 22:07:22,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:07:22,811 INFO L225 Difference]: With dead ends: 103 [2021-11-02 22:07:22,811 INFO L226 Difference]: Without dead ends: 102 [2021-11-02 22:07:22,813 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2249 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1776, Invalid=4386, Unknown=0, NotChecked=0, Total=6162 [2021-11-02 22:07:22,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2021-11-02 22:07:22,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 101. [2021-11-02 22:07:22,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 100 states have (on average 1.01) internal successors, (101), 100 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:07:22,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 101 transitions. [2021-11-02 22:07:22,818 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 101 transitions. Word has length 94 [2021-11-02 22:07:22,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:07:22,818 INFO L470 AbstractCegarLoop]: Abstraction has 101 states and 101 transitions. [2021-11-02 22:07:22,819 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 63 states have (on average 2.9682539682539684) internal successors, (187), 64 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:07:22,819 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 101 transitions. [2021-11-02 22:07:22,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-02 22:07:22,820 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:07:22,820 INFO L513 BasicCegarLoop]: trace histogram [17, 16, 16, 16, 16, 16, 1, 1, 1] [2021-11-02 22:07:22,857 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-11-02 22:07:23,036 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:07:23,036 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:07:23,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:07:23,037 INFO L85 PathProgramCache]: Analyzing trace with hash -1575627500, now seen corresponding path program 16 times [2021-11-02 22:07:23,037 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:07:23,037 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807943202] [2021-11-02 22:07:23,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:07:23,037 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:07:23,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:07:23,554 INFO L134 CoverageAnalysis]: Checked inductivity of 752 backedges. 0 proven. 752 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:07:23,555 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:07:23,555 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807943202] [2021-11-02 22:07:23,555 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807943202] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:07:23,555 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1584032751] [2021-11-02 22:07:23,555 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-02 22:07:23,556 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:07:23,556 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:07:23,562 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:07:23,567 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-11-02 22:07:24,087 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-02 22:07:24,088 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:07:24,090 INFO L263 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 35 conjunts are in the unsatisfiable core [2021-11-02 22:07:24,092 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:07:25,402 INFO L134 CoverageAnalysis]: Checked inductivity of 752 backedges. 0 proven. 752 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:07:25,402 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1584032751] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:07:25,402 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:07:25,402 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 67 [2021-11-02 22:07:25,402 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181198376] [2021-11-02 22:07:25,403 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2021-11-02 22:07:25,403 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:07:25,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2021-11-02 22:07:25,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1150, Invalid=3406, Unknown=0, NotChecked=0, Total=4556 [2021-11-02 22:07:25,406 INFO L87 Difference]: Start difference. First operand 101 states and 101 transitions. Second operand has 68 states, 67 states have (on average 2.970149253731343) internal successors, (199), 68 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:07:25,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:07:25,986 INFO L93 Difference]: Finished difference Result 109 states and 109 transitions. [2021-11-02 22:07:25,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-11-02 22:07:25,986 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 67 states have (on average 2.970149253731343) internal successors, (199), 68 states have internal predecessors, (199), 0 states have call successors, (0), 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 100 [2021-11-02 22:07:25,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:07:25,987 INFO L225 Difference]: With dead ends: 109 [2021-11-02 22:07:25,987 INFO L226 Difference]: Without dead ends: 108 [2021-11-02 22:07:25,988 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2559 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1998, Invalid=4974, Unknown=0, NotChecked=0, Total=6972 [2021-11-02 22:07:25,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2021-11-02 22:07:25,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 107. [2021-11-02 22:07:25,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 106 states have (on average 1.009433962264151) internal successors, (107), 106 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:07:25,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 107 transitions. [2021-11-02 22:07:25,993 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 107 transitions. Word has length 100 [2021-11-02 22:07:25,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:07:25,993 INFO L470 AbstractCegarLoop]: Abstraction has 107 states and 107 transitions. [2021-11-02 22:07:25,994 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 67 states have (on average 2.970149253731343) internal successors, (199), 68 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:07:25,994 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 107 transitions. [2021-11-02 22:07:25,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-02 22:07:25,995 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:07:25,995 INFO L513 BasicCegarLoop]: trace histogram [18, 17, 17, 17, 17, 17, 1, 1, 1] [2021-11-02 22:07:26,032 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-11-02 22:07:26,220 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:07:26,220 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:07:26,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:07:26,221 INFO L85 PathProgramCache]: Analyzing trace with hash -15321025, now seen corresponding path program 17 times [2021-11-02 22:07:26,221 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:07:26,221 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078684895] [2021-11-02 22:07:26,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:07:26,221 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:07:26,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:07:26,756 INFO L134 CoverageAnalysis]: Checked inductivity of 850 backedges. 0 proven. 850 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:07:26,756 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:07:26,756 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078684895] [2021-11-02 22:07:26,756 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078684895] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:07:26,756 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1533789608] [2021-11-02 22:07:26,757 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-02 22:07:26,757 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:07:26,757 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:07:26,758 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:07:26,758 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-11-02 22:07:27,414 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2021-11-02 22:07:27,414 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:07:27,416 INFO L263 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 37 conjunts are in the unsatisfiable core [2021-11-02 22:07:27,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:07:28,791 INFO L134 CoverageAnalysis]: Checked inductivity of 850 backedges. 0 proven. 850 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:07:28,792 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1533789608] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:07:28,792 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:07:28,792 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 71 [2021-11-02 22:07:28,792 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067829889] [2021-11-02 22:07:28,793 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2021-11-02 22:07:28,793 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:07:28,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2021-11-02 22:07:28,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1281, Invalid=3831, Unknown=0, NotChecked=0, Total=5112 [2021-11-02 22:07:28,795 INFO L87 Difference]: Start difference. First operand 107 states and 107 transitions. Second operand has 72 states, 71 states have (on average 2.971830985915493) internal successors, (211), 72 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:07:29,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:07:29,328 INFO L93 Difference]: Finished difference Result 115 states and 115 transitions. [2021-11-02 22:07:29,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-11-02 22:07:29,328 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 71 states have (on average 2.971830985915493) internal successors, (211), 72 states have internal predecessors, (211), 0 states have call successors, (0), 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 106 [2021-11-02 22:07:29,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:07:29,329 INFO L225 Difference]: With dead ends: 115 [2021-11-02 22:07:29,330 INFO L226 Difference]: Without dead ends: 114 [2021-11-02 22:07:29,330 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2889 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=2233, Invalid=5599, Unknown=0, NotChecked=0, Total=7832 [2021-11-02 22:07:29,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2021-11-02 22:07:29,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 113. [2021-11-02 22:07:29,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 112 states have (on average 1.0089285714285714) internal successors, (113), 112 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:07:29,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 113 transitions. [2021-11-02 22:07:29,334 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 113 transitions. Word has length 106 [2021-11-02 22:07:29,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:07:29,334 INFO L470 AbstractCegarLoop]: Abstraction has 113 states and 113 transitions. [2021-11-02 22:07:29,335 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 71 states have (on average 2.971830985915493) internal successors, (211), 72 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:07:29,335 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 113 transitions. [2021-11-02 22:07:29,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-02 22:07:29,336 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:07:29,336 INFO L513 BasicCegarLoop]: trace histogram [19, 18, 18, 18, 18, 18, 1, 1, 1] [2021-11-02 22:07:29,362 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-11-02 22:07:29,544 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:07:29,544 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:07:29,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:07:29,545 INFO L85 PathProgramCache]: Analyzing trace with hash -2018750678, now seen corresponding path program 18 times [2021-11-02 22:07:29,545 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:07:29,545 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405337409] [2021-11-02 22:07:29,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:07:29,545 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:07:29,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:07:30,120 INFO L134 CoverageAnalysis]: Checked inductivity of 954 backedges. 0 proven. 954 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:07:30,120 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:07:30,120 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405337409] [2021-11-02 22:07:30,120 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405337409] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:07:30,120 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1901182210] [2021-11-02 22:07:30,120 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-02 22:07:30,120 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:07:30,120 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:07:30,122 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:07:30,122 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-11-02 22:07:30,778 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2021-11-02 22:07:30,778 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:07:30,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 39 conjunts are in the unsatisfiable core [2021-11-02 22:07:30,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:07:32,241 INFO L134 CoverageAnalysis]: Checked inductivity of 954 backedges. 0 proven. 954 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:07:32,242 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1901182210] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:07:32,242 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:07:32,242 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 75 [2021-11-02 22:07:32,242 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414553752] [2021-11-02 22:07:32,243 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2021-11-02 22:07:32,243 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:07:32,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2021-11-02 22:07:32,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1419, Invalid=4281, Unknown=0, NotChecked=0, Total=5700 [2021-11-02 22:07:32,245 INFO L87 Difference]: Start difference. First operand 113 states and 113 transitions. Second operand has 76 states, 75 states have (on average 2.973333333333333) internal successors, (223), 76 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:07:32,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:07:32,818 INFO L93 Difference]: Finished difference Result 121 states and 121 transitions. [2021-11-02 22:07:32,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-11-02 22:07:32,818 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 75 states have (on average 2.973333333333333) internal successors, (223), 76 states have internal predecessors, (223), 0 states have call successors, (0), 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 112 [2021-11-02 22:07:32,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:07:32,819 INFO L225 Difference]: With dead ends: 121 [2021-11-02 22:07:32,820 INFO L226 Difference]: Without dead ends: 120 [2021-11-02 22:07:32,821 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3239 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=2481, Invalid=6261, Unknown=0, NotChecked=0, Total=8742 [2021-11-02 22:07:32,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2021-11-02 22:07:32,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 119. [2021-11-02 22:07:32,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 118 states have (on average 1.0084745762711864) internal successors, (119), 118 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:07:32,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 119 transitions. [2021-11-02 22:07:32,825 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 119 transitions. Word has length 112 [2021-11-02 22:07:32,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:07:32,826 INFO L470 AbstractCegarLoop]: Abstraction has 119 states and 119 transitions. [2021-11-02 22:07:32,826 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 76 states, 75 states have (on average 2.973333333333333) internal successors, (223), 76 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:07:32,826 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 119 transitions. [2021-11-02 22:07:32,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-11-02 22:07:32,828 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:07:32,828 INFO L513 BasicCegarLoop]: trace histogram [20, 19, 19, 19, 19, 19, 1, 1, 1] [2021-11-02 22:07:32,861 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2021-11-02 22:07:33,044 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-11-02 22:07:33,044 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:07:33,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:07:33,045 INFO L85 PathProgramCache]: Analyzing trace with hash 540166613, now seen corresponding path program 19 times [2021-11-02 22:07:33,045 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:07:33,045 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340908745] [2021-11-02 22:07:33,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:07:33,045 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:07:33,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:07:33,777 INFO L134 CoverageAnalysis]: Checked inductivity of 1064 backedges. 0 proven. 1064 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:07:33,777 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:07:33,778 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340908745] [2021-11-02 22:07:33,778 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340908745] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:07:33,778 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [350096495] [2021-11-02 22:07:33,778 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-02 22:07:33,778 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:07:33,778 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:07:33,780 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:07:33,797 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-11-02 22:07:34,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:07:34,603 INFO L263 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 41 conjunts are in the unsatisfiable core [2021-11-02 22:07:34,606 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:07:36,201 INFO L134 CoverageAnalysis]: Checked inductivity of 1064 backedges. 0 proven. 1064 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:07:36,201 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [350096495] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:07:36,202 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:07:36,202 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 79 [2021-11-02 22:07:36,202 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116372124] [2021-11-02 22:07:36,203 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 80 states [2021-11-02 22:07:36,203 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:07:36,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2021-11-02 22:07:36,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1564, Invalid=4756, Unknown=0, NotChecked=0, Total=6320 [2021-11-02 22:07:36,205 INFO L87 Difference]: Start difference. First operand 119 states and 119 transitions. Second operand has 80 states, 79 states have (on average 2.9746835443037973) internal successors, (235), 80 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:07:36,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:07:36,876 INFO L93 Difference]: Finished difference Result 127 states and 127 transitions. [2021-11-02 22:07:36,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-11-02 22:07:36,877 INFO L78 Accepts]: Start accepts. Automaton has has 80 states, 79 states have (on average 2.9746835443037973) internal successors, (235), 80 states have internal predecessors, (235), 0 states have call successors, (0), 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 118 [2021-11-02 22:07:36,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:07:36,878 INFO L225 Difference]: With dead ends: 127 [2021-11-02 22:07:36,878 INFO L226 Difference]: Without dead ends: 126 [2021-11-02 22:07:36,879 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3609 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=2742, Invalid=6960, Unknown=0, NotChecked=0, Total=9702 [2021-11-02 22:07:36,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2021-11-02 22:07:36,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 125. [2021-11-02 22:07:36,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 124 states have (on average 1.0080645161290323) internal successors, (125), 124 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:07:36,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 125 transitions. [2021-11-02 22:07:36,885 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 125 transitions. Word has length 118 [2021-11-02 22:07:36,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:07:36,885 INFO L470 AbstractCegarLoop]: Abstraction has 125 states and 125 transitions. [2021-11-02 22:07:36,885 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 80 states, 79 states have (on average 2.9746835443037973) internal successors, (235), 80 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:07:36,886 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 125 transitions. [2021-11-02 22:07:36,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-11-02 22:07:36,887 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:07:36,887 INFO L513 BasicCegarLoop]: trace histogram [21, 20, 20, 20, 20, 20, 1, 1, 1] [2021-11-02 22:07:36,916 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2021-11-02 22:07:37,104 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-11-02 22:07:37,104 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:07:37,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:07:37,105 INFO L85 PathProgramCache]: Analyzing trace with hash -1398908864, now seen corresponding path program 20 times [2021-11-02 22:07:37,105 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:07:37,105 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028719383] [2021-11-02 22:07:37,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:07:37,105 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:07:37,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:07:37,896 INFO L134 CoverageAnalysis]: Checked inductivity of 1180 backedges. 0 proven. 1180 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:07:37,897 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:07:37,897 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028719383] [2021-11-02 22:07:37,897 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028719383] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:07:37,897 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [805661823] [2021-11-02 22:07:37,897 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-02 22:07:37,897 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:07:37,898 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:07:37,898 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:07:37,918 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-11-02 22:07:38,690 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-02 22:07:38,690 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:07:38,692 INFO L263 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 43 conjunts are in the unsatisfiable core [2021-11-02 22:07:38,694 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:07:40,496 INFO L134 CoverageAnalysis]: Checked inductivity of 1180 backedges. 0 proven. 1180 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:07:40,496 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [805661823] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:07:40,496 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:07:40,496 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 83 [2021-11-02 22:07:40,497 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325268692] [2021-11-02 22:07:40,497 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 84 states [2021-11-02 22:07:40,497 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:07:40,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2021-11-02 22:07:40,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1716, Invalid=5256, Unknown=0, NotChecked=0, Total=6972 [2021-11-02 22:07:40,499 INFO L87 Difference]: Start difference. First operand 125 states and 125 transitions. Second operand has 84 states, 83 states have (on average 2.9759036144578315) internal successors, (247), 84 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:07:41,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:07:41,189 INFO L93 Difference]: Finished difference Result 133 states and 133 transitions. [2021-11-02 22:07:41,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-11-02 22:07:41,189 INFO L78 Accepts]: Start accepts. Automaton has has 84 states, 83 states have (on average 2.9759036144578315) internal successors, (247), 84 states have internal predecessors, (247), 0 states have call successors, (0), 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 124 [2021-11-02 22:07:41,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:07:41,191 INFO L225 Difference]: With dead ends: 133 [2021-11-02 22:07:41,191 INFO L226 Difference]: Without dead ends: 132 [2021-11-02 22:07:41,193 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3999 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=3016, Invalid=7696, Unknown=0, NotChecked=0, Total=10712 [2021-11-02 22:07:41,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2021-11-02 22:07:41,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 131. [2021-11-02 22:07:41,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 130 states have (on average 1.0076923076923077) internal successors, (131), 130 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:07:41,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 131 transitions. [2021-11-02 22:07:41,199 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 131 transitions. Word has length 124 [2021-11-02 22:07:41,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:07:41,199 INFO L470 AbstractCegarLoop]: Abstraction has 131 states and 131 transitions. [2021-11-02 22:07:41,200 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 84 states, 83 states have (on average 2.9759036144578315) internal successors, (247), 84 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:07:41,200 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 131 transitions. [2021-11-02 22:07:41,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-11-02 22:07:41,201 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:07:41,202 INFO L513 BasicCegarLoop]: trace histogram [22, 21, 21, 21, 21, 21, 1, 1, 1] [2021-11-02 22:07:41,234 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2021-11-02 22:07:41,416 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-11-02 22:07:41,416 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:07:41,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:07:41,417 INFO L85 PathProgramCache]: Analyzing trace with hash -343758229, now seen corresponding path program 21 times [2021-11-02 22:07:41,417 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:07:41,417 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568759796] [2021-11-02 22:07:41,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:07:41,417 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:07:41,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:07:42,141 INFO L134 CoverageAnalysis]: Checked inductivity of 1302 backedges. 0 proven. 1302 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:07:42,142 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:07:42,142 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568759796] [2021-11-02 22:07:42,142 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568759796] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:07:42,142 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1339419560] [2021-11-02 22:07:42,142 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-02 22:07:42,142 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:07:42,142 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:07:42,143 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:07:42,144 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-11-02 22:07:43,021 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2021-11-02 22:07:43,022 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:07:43,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 45 conjunts are in the unsatisfiable core [2021-11-02 22:07:43,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:07:44,769 INFO L134 CoverageAnalysis]: Checked inductivity of 1302 backedges. 0 proven. 1302 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:07:44,769 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1339419560] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:07:44,769 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:07:44,769 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44] total 87 [2021-11-02 22:07:44,770 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567701888] [2021-11-02 22:07:44,770 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 88 states [2021-11-02 22:07:44,770 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:07:44,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2021-11-02 22:07:44,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1875, Invalid=5781, Unknown=0, NotChecked=0, Total=7656 [2021-11-02 22:07:44,771 INFO L87 Difference]: Start difference. First operand 131 states and 131 transitions. Second operand has 88 states, 87 states have (on average 2.9770114942528734) internal successors, (259), 88 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:07:45,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:07:45,455 INFO L93 Difference]: Finished difference Result 139 states and 139 transitions. [2021-11-02 22:07:45,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-11-02 22:07:45,456 INFO L78 Accepts]: Start accepts. Automaton has has 88 states, 87 states have (on average 2.9770114942528734) internal successors, (259), 88 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2021-11-02 22:07:45,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:07:45,457 INFO L225 Difference]: With dead ends: 139 [2021-11-02 22:07:45,457 INFO L226 Difference]: Without dead ends: 138 [2021-11-02 22:07:45,458 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4409 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=3303, Invalid=8469, Unknown=0, NotChecked=0, Total=11772 [2021-11-02 22:07:45,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2021-11-02 22:07:45,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 137. [2021-11-02 22:07:45,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 136 states have (on average 1.0073529411764706) internal successors, (137), 136 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:07:45,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 137 transitions. [2021-11-02 22:07:45,464 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 137 transitions. Word has length 130 [2021-11-02 22:07:45,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:07:45,464 INFO L470 AbstractCegarLoop]: Abstraction has 137 states and 137 transitions. [2021-11-02 22:07:45,464 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 88 states, 87 states have (on average 2.9770114942528734) internal successors, (259), 88 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:07:45,465 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 137 transitions. [2021-11-02 22:07:45,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2021-11-02 22:07:45,466 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:07:45,466 INFO L513 BasicCegarLoop]: trace histogram [23, 22, 22, 22, 22, 22, 1, 1, 1] [2021-11-02 22:07:45,495 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2021-11-02 22:07:45,680 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-11-02 22:07:45,680 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:07:45,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:07:45,681 INFO L85 PathProgramCache]: Analyzing trace with hash 286093398, now seen corresponding path program 22 times [2021-11-02 22:07:45,681 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:07:45,681 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114338632] [2021-11-02 22:07:45,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:07:45,681 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:07:45,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:07:46,457 INFO L134 CoverageAnalysis]: Checked inductivity of 1430 backedges. 0 proven. 1430 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:07:46,457 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:07:46,457 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114338632] [2021-11-02 22:07:46,457 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114338632] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:07:46,458 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [709780348] [2021-11-02 22:07:46,458 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-02 22:07:46,458 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:07:46,458 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:07:46,458 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:07:46,459 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2021-11-02 22:07:47,410 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-02 22:07:47,410 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:07:47,412 INFO L263 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 47 conjunts are in the unsatisfiable core [2021-11-02 22:07:47,414 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:07:49,260 INFO L134 CoverageAnalysis]: Checked inductivity of 1430 backedges. 0 proven. 1430 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:07:49,260 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [709780348] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:07:49,260 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:07:49,260 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46] total 91 [2021-11-02 22:07:49,261 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553525537] [2021-11-02 22:07:49,261 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 92 states [2021-11-02 22:07:49,261 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:07:49,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2021-11-02 22:07:49,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2041, Invalid=6331, Unknown=0, NotChecked=0, Total=8372 [2021-11-02 22:07:49,263 INFO L87 Difference]: Start difference. First operand 137 states and 137 transitions. Second operand has 92 states, 91 states have (on average 2.978021978021978) internal successors, (271), 92 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:07:50,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:07:50,108 INFO L93 Difference]: Finished difference Result 145 states and 145 transitions. [2021-11-02 22:07:50,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-11-02 22:07:50,108 INFO L78 Accepts]: Start accepts. Automaton has has 92 states, 91 states have (on average 2.978021978021978) internal successors, (271), 92 states have internal predecessors, (271), 0 states have call successors, (0), 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 136 [2021-11-02 22:07:50,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:07:50,112 INFO L225 Difference]: With dead ends: 145 [2021-11-02 22:07:50,112 INFO L226 Difference]: Without dead ends: 144 [2021-11-02 22:07:50,114 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4839 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=3603, Invalid=9279, Unknown=0, NotChecked=0, Total=12882 [2021-11-02 22:07:50,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2021-11-02 22:07:50,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 143. [2021-11-02 22:07:50,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 142 states have (on average 1.0070422535211268) internal successors, (143), 142 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:07:50,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 143 transitions. [2021-11-02 22:07:50,119 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 143 transitions. Word has length 136 [2021-11-02 22:07:50,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:07:50,119 INFO L470 AbstractCegarLoop]: Abstraction has 143 states and 143 transitions. [2021-11-02 22:07:50,119 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 92 states, 91 states have (on average 2.978021978021978) internal successors, (271), 92 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:07:50,120 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 143 transitions. [2021-11-02 22:07:50,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-11-02 22:07:50,121 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:07:50,121 INFO L513 BasicCegarLoop]: trace histogram [24, 23, 23, 23, 23, 23, 1, 1, 1] [2021-11-02 22:07:50,154 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2021-11-02 22:07:50,344 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:07:50,344 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:07:50,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:07:50,345 INFO L85 PathProgramCache]: Analyzing trace with hash 571005441, now seen corresponding path program 23 times [2021-11-02 22:07:50,345 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:07:50,345 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539216107] [2021-11-02 22:07:50,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:07:50,345 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:07:50,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:07:51,267 INFO L134 CoverageAnalysis]: Checked inductivity of 1564 backedges. 0 proven. 1564 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:07:51,267 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:07:51,267 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539216107] [2021-11-02 22:07:51,267 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539216107] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:07:51,267 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [986206140] [2021-11-02 22:07:51,268 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-02 22:07:51,268 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:07:51,268 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:07:51,269 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:07:51,270 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2021-11-02 22:07:52,296 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2021-11-02 22:07:52,296 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:07:52,299 INFO L263 TraceCheckSpWp]: Trace formula consists of 359 conjuncts, 49 conjunts are in the unsatisfiable core [2021-11-02 22:07:52,300 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:07:54,396 INFO L134 CoverageAnalysis]: Checked inductivity of 1564 backedges. 0 proven. 1564 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:07:54,396 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [986206140] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:07:54,397 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:07:54,397 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48] total 95 [2021-11-02 22:07:54,397 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511085592] [2021-11-02 22:07:54,398 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2021-11-02 22:07:54,398 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:07:54,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2021-11-02 22:07:54,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2214, Invalid=6906, Unknown=0, NotChecked=0, Total=9120 [2021-11-02 22:07:54,400 INFO L87 Difference]: Start difference. First operand 143 states and 143 transitions. Second operand has 96 states, 95 states have (on average 2.9789473684210526) internal successors, (283), 96 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:07:55,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:07:55,191 INFO L93 Difference]: Finished difference Result 151 states and 151 transitions. [2021-11-02 22:07:55,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-11-02 22:07:55,191 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 95 states have (on average 2.9789473684210526) internal successors, (283), 96 states have internal predecessors, (283), 0 states have call successors, (0), 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 142 [2021-11-02 22:07:55,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:07:55,192 INFO L225 Difference]: With dead ends: 151 [2021-11-02 22:07:55,192 INFO L226 Difference]: Without dead ends: 150 [2021-11-02 22:07:55,195 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5289 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=3916, Invalid=10126, Unknown=0, NotChecked=0, Total=14042 [2021-11-02 22:07:55,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2021-11-02 22:07:55,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 149. [2021-11-02 22:07:55,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 148 states have (on average 1.0067567567567568) internal successors, (149), 148 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:07:55,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 149 transitions. [2021-11-02 22:07:55,203 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 149 transitions. Word has length 142 [2021-11-02 22:07:55,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:07:55,204 INFO L470 AbstractCegarLoop]: Abstraction has 149 states and 149 transitions. [2021-11-02 22:07:55,204 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 95 states have (on average 2.9789473684210526) internal successors, (283), 96 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:07:55,204 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 149 transitions. [2021-11-02 22:07:55,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-11-02 22:07:55,219 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:07:55,219 INFO L513 BasicCegarLoop]: trace histogram [25, 24, 24, 24, 24, 24, 1, 1, 1] [2021-11-02 22:07:55,261 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2021-11-02 22:07:55,433 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:07:55,433 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:07:55,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:07:55,434 INFO L85 PathProgramCache]: Analyzing trace with hash 249239404, now seen corresponding path program 24 times [2021-11-02 22:07:55,434 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:07:55,434 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990121894] [2021-11-02 22:07:55,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:07:55,434 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:07:55,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:07:56,298 INFO L134 CoverageAnalysis]: Checked inductivity of 1704 backedges. 0 proven. 1704 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:07:56,298 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:07:56,298 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990121894] [2021-11-02 22:07:56,298 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990121894] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:07:56,298 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [888345774] [2021-11-02 22:07:56,298 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-02 22:07:56,298 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:07:56,298 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:07:56,299 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:07:56,300 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2021-11-02 22:07:57,467 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2021-11-02 22:07:57,467 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:07:57,470 INFO L263 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 51 conjunts are in the unsatisfiable core [2021-11-02 22:07:57,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:07:59,684 INFO L134 CoverageAnalysis]: Checked inductivity of 1704 backedges. 0 proven. 1704 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:07:59,685 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [888345774] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:07:59,685 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:07:59,685 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50] total 99 [2021-11-02 22:07:59,685 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843072849] [2021-11-02 22:07:59,686 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 100 states [2021-11-02 22:07:59,686 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:07:59,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2021-11-02 22:07:59,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2394, Invalid=7506, Unknown=0, NotChecked=0, Total=9900 [2021-11-02 22:07:59,692 INFO L87 Difference]: Start difference. First operand 149 states and 149 transitions. Second operand has 100 states, 99 states have (on average 2.9797979797979797) internal successors, (295), 100 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:08:00,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:08:00,611 INFO L93 Difference]: Finished difference Result 157 states and 157 transitions. [2021-11-02 22:08:00,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-11-02 22:08:00,612 INFO L78 Accepts]: Start accepts. Automaton has has 100 states, 99 states have (on average 2.9797979797979797) internal successors, (295), 100 states have internal predecessors, (295), 0 states have call successors, (0), 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 148 [2021-11-02 22:08:00,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:08:00,613 INFO L225 Difference]: With dead ends: 157 [2021-11-02 22:08:00,613 INFO L226 Difference]: Without dead ends: 156 [2021-11-02 22:08:00,614 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5759 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=4242, Invalid=11010, Unknown=0, NotChecked=0, Total=15252 [2021-11-02 22:08:00,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2021-11-02 22:08:00,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 155. [2021-11-02 22:08:00,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 154 states have (on average 1.0064935064935066) internal successors, (155), 154 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:08:00,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 155 transitions. [2021-11-02 22:08:00,620 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 155 transitions. Word has length 148 [2021-11-02 22:08:00,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:08:00,621 INFO L470 AbstractCegarLoop]: Abstraction has 155 states and 155 transitions. [2021-11-02 22:08:00,621 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 100 states, 99 states have (on average 2.9797979797979797) internal successors, (295), 100 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:08:00,621 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 155 transitions. [2021-11-02 22:08:00,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-11-02 22:08:00,622 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:08:00,622 INFO L513 BasicCegarLoop]: trace histogram [26, 25, 25, 25, 25, 25, 1, 1, 1] [2021-11-02 22:08:00,630 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2021-11-02 22:08:00,828 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2021-11-02 22:08:00,828 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:08:00,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:08:00,829 INFO L85 PathProgramCache]: Analyzing trace with hash -1903798121, now seen corresponding path program 25 times [2021-11-02 22:08:00,829 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:08:00,829 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614191621] [2021-11-02 22:08:00,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:08:00,829 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:08:00,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:08:01,940 INFO L134 CoverageAnalysis]: Checked inductivity of 1850 backedges. 0 proven. 1850 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:08:01,940 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:08:01,940 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614191621] [2021-11-02 22:08:01,940 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614191621] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:08:01,941 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1316292518] [2021-11-02 22:08:01,941 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-02 22:08:01,941 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:08:01,941 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:08:01,941 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:08:01,944 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2021-11-02 22:08:03,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:08:03,152 INFO L263 TraceCheckSpWp]: Trace formula consists of 387 conjuncts, 53 conjunts are in the unsatisfiable core [2021-11-02 22:08:03,153 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:08:05,493 INFO L134 CoverageAnalysis]: Checked inductivity of 1850 backedges. 0 proven. 1850 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:08:05,493 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1316292518] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:08:05,493 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:08:05,493 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 52] total 103 [2021-11-02 22:08:05,493 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858870847] [2021-11-02 22:08:05,494 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 104 states [2021-11-02 22:08:05,494 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:08:05,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2021-11-02 22:08:05,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2581, Invalid=8131, Unknown=0, NotChecked=0, Total=10712 [2021-11-02 22:08:05,495 INFO L87 Difference]: Start difference. First operand 155 states and 155 transitions. Second operand has 104 states, 103 states have (on average 2.9805825242718447) internal successors, (307), 104 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:08:06,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:08:06,420 INFO L93 Difference]: Finished difference Result 163 states and 163 transitions. [2021-11-02 22:08:06,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-11-02 22:08:06,420 INFO L78 Accepts]: Start accepts. Automaton has has 104 states, 103 states have (on average 2.9805825242718447) internal successors, (307), 104 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 154 [2021-11-02 22:08:06,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:08:06,421 INFO L225 Difference]: With dead ends: 163 [2021-11-02 22:08:06,421 INFO L226 Difference]: Without dead ends: 162 [2021-11-02 22:08:06,423 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6249 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=4581, Invalid=11931, Unknown=0, NotChecked=0, Total=16512 [2021-11-02 22:08:06,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2021-11-02 22:08:06,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 161. [2021-11-02 22:08:06,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 160 states have (on average 1.00625) internal successors, (161), 160 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:08:06,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 161 transitions. [2021-11-02 22:08:06,429 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 161 transitions. Word has length 154 [2021-11-02 22:08:06,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:08:06,429 INFO L470 AbstractCegarLoop]: Abstraction has 161 states and 161 transitions. [2021-11-02 22:08:06,429 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 104 states, 103 states have (on average 2.9805825242718447) internal successors, (307), 104 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:08:06,430 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 161 transitions. [2021-11-02 22:08:06,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-11-02 22:08:06,431 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:08:06,431 INFO L513 BasicCegarLoop]: trace histogram [27, 26, 26, 26, 26, 26, 1, 1, 1] [2021-11-02 22:08:06,456 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2021-11-02 22:08:06,636 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:08:06,636 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:08:06,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:08:06,637 INFO L85 PathProgramCache]: Analyzing trace with hash -1180119678, now seen corresponding path program 26 times [2021-11-02 22:08:06,637 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:08:06,637 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096427234] [2021-11-02 22:08:06,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:08:06,637 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:08:06,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:08:07,820 INFO L134 CoverageAnalysis]: Checked inductivity of 2002 backedges. 0 proven. 2002 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:08:07,820 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:08:07,820 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096427234] [2021-11-02 22:08:07,820 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096427234] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:08:07,820 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [370140773] [2021-11-02 22:08:07,820 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-02 22:08:07,820 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:08:07,821 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:08:07,822 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:08:07,842 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2021-11-02 22:08:09,161 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-02 22:08:09,161 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:08:09,163 INFO L263 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 55 conjunts are in the unsatisfiable core [2021-11-02 22:08:09,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:08:11,573 INFO L134 CoverageAnalysis]: Checked inductivity of 2002 backedges. 0 proven. 2002 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:08:11,574 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [370140773] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:08:11,574 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:08:11,574 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 54] total 107 [2021-11-02 22:08:11,574 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658844603] [2021-11-02 22:08:11,574 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 108 states [2021-11-02 22:08:11,574 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:08:11,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2021-11-02 22:08:11,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2775, Invalid=8781, Unknown=0, NotChecked=0, Total=11556 [2021-11-02 22:08:11,577 INFO L87 Difference]: Start difference. First operand 161 states and 161 transitions. Second operand has 108 states, 107 states have (on average 2.9813084112149535) internal successors, (319), 108 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:08:12,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:08:12,798 INFO L93 Difference]: Finished difference Result 169 states and 169 transitions. [2021-11-02 22:08:12,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-11-02 22:08:12,798 INFO L78 Accepts]: Start accepts. Automaton has has 108 states, 107 states have (on average 2.9813084112149535) internal successors, (319), 108 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 160 [2021-11-02 22:08:12,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:08:12,799 INFO L225 Difference]: With dead ends: 169 [2021-11-02 22:08:12,799 INFO L226 Difference]: Without dead ends: 168 [2021-11-02 22:08:12,801 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6759 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=4933, Invalid=12889, Unknown=0, NotChecked=0, Total=17822 [2021-11-02 22:08:12,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2021-11-02 22:08:12,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 167. [2021-11-02 22:08:12,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 166 states have (on average 1.0060240963855422) internal successors, (167), 166 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:08:12,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 167 transitions. [2021-11-02 22:08:12,805 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 167 transitions. Word has length 160 [2021-11-02 22:08:12,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:08:12,805 INFO L470 AbstractCegarLoop]: Abstraction has 167 states and 167 transitions. [2021-11-02 22:08:12,806 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 108 states, 107 states have (on average 2.9813084112149535) internal successors, (319), 108 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:08:12,806 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 167 transitions. [2021-11-02 22:08:12,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-11-02 22:08:12,806 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:08:12,806 INFO L513 BasicCegarLoop]: trace histogram [28, 27, 27, 27, 27, 27, 1, 1, 1] [2021-11-02 22:08:12,830 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2021-11-02 22:08:13,007 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2021-11-02 22:08:13,007 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:08:13,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:08:13,007 INFO L85 PathProgramCache]: Analyzing trace with hash 1702667821, now seen corresponding path program 27 times [2021-11-02 22:08:13,008 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:08:13,008 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147392527] [2021-11-02 22:08:13,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:08:13,008 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:08:13,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:08:14,132 INFO L134 CoverageAnalysis]: Checked inductivity of 2160 backedges. 0 proven. 2160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:08:14,133 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:08:14,133 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147392527] [2021-11-02 22:08:14,133 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147392527] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:08:14,133 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1184911468] [2021-11-02 22:08:14,133 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-02 22:08:14,134 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:08:14,134 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:08:14,140 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:08:14,143 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2021-11-02 22:08:15,593 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 28 check-sat command(s) [2021-11-02 22:08:15,593 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:08:15,596 INFO L263 TraceCheckSpWp]: Trace formula consists of 415 conjuncts, 57 conjunts are in the unsatisfiable core [2021-11-02 22:08:15,598 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:08:18,153 INFO L134 CoverageAnalysis]: Checked inductivity of 2160 backedges. 0 proven. 2160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:08:18,154 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1184911468] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:08:18,154 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:08:18,154 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 56] total 111 [2021-11-02 22:08:18,154 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556864027] [2021-11-02 22:08:18,155 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 112 states [2021-11-02 22:08:18,155 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:08:18,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2021-11-02 22:08:18,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2976, Invalid=9456, Unknown=0, NotChecked=0, Total=12432 [2021-11-02 22:08:18,157 INFO L87 Difference]: Start difference. First operand 167 states and 167 transitions. Second operand has 112 states, 111 states have (on average 2.981981981981982) internal successors, (331), 112 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:08:19,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:08:19,254 INFO L93 Difference]: Finished difference Result 175 states and 175 transitions. [2021-11-02 22:08:19,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-11-02 22:08:19,255 INFO L78 Accepts]: Start accepts. Automaton has has 112 states, 111 states have (on average 2.981981981981982) internal successors, (331), 112 states have internal predecessors, (331), 0 states have call successors, (0), 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 166 [2021-11-02 22:08:19,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:08:19,257 INFO L225 Difference]: With dead ends: 175 [2021-11-02 22:08:19,257 INFO L226 Difference]: Without dead ends: 174 [2021-11-02 22:08:19,258 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7289 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=5298, Invalid=13884, Unknown=0, NotChecked=0, Total=19182 [2021-11-02 22:08:19,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2021-11-02 22:08:19,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 173. [2021-11-02 22:08:19,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 172 states have (on average 1.005813953488372) internal successors, (173), 172 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:08:19,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 173 transitions. [2021-11-02 22:08:19,265 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 173 transitions. Word has length 166 [2021-11-02 22:08:19,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:08:19,266 INFO L470 AbstractCegarLoop]: Abstraction has 173 states and 173 transitions. [2021-11-02 22:08:19,266 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 112 states, 111 states have (on average 2.981981981981982) internal successors, (331), 112 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:08:19,266 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 173 transitions. [2021-11-02 22:08:19,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2021-11-02 22:08:19,267 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:08:19,268 INFO L513 BasicCegarLoop]: trace histogram [29, 28, 28, 28, 28, 28, 1, 1, 1] [2021-11-02 22:08:19,309 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2021-11-02 22:08:19,484 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2021-11-02 22:08:19,484 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:08:19,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:08:19,485 INFO L85 PathProgramCache]: Analyzing trace with hash 1054347928, now seen corresponding path program 28 times [2021-11-02 22:08:19,485 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:08:19,485 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163850108] [2021-11-02 22:08:19,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:08:19,485 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:08:19,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:08:20,876 INFO L134 CoverageAnalysis]: Checked inductivity of 2324 backedges. 0 proven. 2324 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:08:20,876 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:08:20,877 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163850108] [2021-11-02 22:08:20,877 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163850108] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:08:20,877 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1506742086] [2021-11-02 22:08:20,877 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-02 22:08:20,877 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:08:20,877 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:08:20,878 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:08:20,879 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2021-11-02 22:08:22,339 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-02 22:08:22,339 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:08:22,341 INFO L263 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 59 conjunts are in the unsatisfiable core [2021-11-02 22:08:22,343 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:08:25,079 INFO L134 CoverageAnalysis]: Checked inductivity of 2324 backedges. 0 proven. 2324 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:08:25,080 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1506742086] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:08:25,080 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:08:25,080 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 58] total 115 [2021-11-02 22:08:25,080 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856072681] [2021-11-02 22:08:25,081 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 116 states [2021-11-02 22:08:25,081 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:08:25,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 116 interpolants. [2021-11-02 22:08:25,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3184, Invalid=10156, Unknown=0, NotChecked=0, Total=13340 [2021-11-02 22:08:25,083 INFO L87 Difference]: Start difference. First operand 173 states and 173 transitions. Second operand has 116 states, 115 states have (on average 2.982608695652174) internal successors, (343), 116 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:08:26,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:08:26,194 INFO L93 Difference]: Finished difference Result 181 states and 181 transitions. [2021-11-02 22:08:26,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-11-02 22:08:26,194 INFO L78 Accepts]: Start accepts. Automaton has has 116 states, 115 states have (on average 2.982608695652174) internal successors, (343), 116 states have internal predecessors, (343), 0 states have call successors, (0), 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 172 [2021-11-02 22:08:26,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:08:26,195 INFO L225 Difference]: With dead ends: 181 [2021-11-02 22:08:26,195 INFO L226 Difference]: Without dead ends: 180 [2021-11-02 22:08:26,196 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7839 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=5676, Invalid=14916, Unknown=0, NotChecked=0, Total=20592 [2021-11-02 22:08:26,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2021-11-02 22:08:26,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 179. [2021-11-02 22:08:26,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 178 states have (on average 1.0056179775280898) internal successors, (179), 178 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:08:26,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 179 transitions. [2021-11-02 22:08:26,201 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 179 transitions. Word has length 172 [2021-11-02 22:08:26,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:08:26,201 INFO L470 AbstractCegarLoop]: Abstraction has 179 states and 179 transitions. [2021-11-02 22:08:26,201 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 116 states, 115 states have (on average 2.982608695652174) internal successors, (343), 116 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:08:26,202 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 179 transitions. [2021-11-02 22:08:26,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-11-02 22:08:26,202 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:08:26,202 INFO L513 BasicCegarLoop]: trace histogram [30, 29, 29, 29, 29, 29, 1, 1, 1] [2021-11-02 22:08:26,228 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2021-11-02 22:08:26,403 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2021-11-02 22:08:26,403 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:08:26,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:08:26,403 INFO L85 PathProgramCache]: Analyzing trace with hash -1523760445, now seen corresponding path program 29 times [2021-11-02 22:08:26,403 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:08:26,403 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124086583] [2021-11-02 22:08:26,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:08:26,404 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:08:26,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:08:27,766 INFO L134 CoverageAnalysis]: Checked inductivity of 2494 backedges. 0 proven. 2494 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:08:27,766 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:08:27,766 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124086583] [2021-11-02 22:08:27,766 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124086583] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:08:27,767 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [535674633] [2021-11-02 22:08:27,767 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-02 22:08:27,767 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:08:27,767 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:08:27,770 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:08:27,771 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2021-11-02 22:08:29,400 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 30 check-sat command(s) [2021-11-02 22:08:29,400 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:08:29,403 INFO L263 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 61 conjunts are in the unsatisfiable core [2021-11-02 22:08:29,405 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:08:32,236 INFO L134 CoverageAnalysis]: Checked inductivity of 2494 backedges. 0 proven. 2494 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:08:32,236 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [535674633] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:08:32,236 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:08:32,237 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 60] total 119 [2021-11-02 22:08:32,237 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256811816] [2021-11-02 22:08:32,237 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 120 states [2021-11-02 22:08:32,238 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:08:32,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 120 interpolants. [2021-11-02 22:08:32,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3399, Invalid=10881, Unknown=0, NotChecked=0, Total=14280 [2021-11-02 22:08:32,241 INFO L87 Difference]: Start difference. First operand 179 states and 179 transitions. Second operand has 120 states, 119 states have (on average 2.9831932773109244) internal successors, (355), 120 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:08:33,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:08:33,497 INFO L93 Difference]: Finished difference Result 187 states and 187 transitions. [2021-11-02 22:08:33,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-11-02 22:08:33,498 INFO L78 Accepts]: Start accepts. Automaton has has 120 states, 119 states have (on average 2.9831932773109244) internal successors, (355), 120 states have internal predecessors, (355), 0 states have call successors, (0), 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 178 [2021-11-02 22:08:33,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:08:33,499 INFO L225 Difference]: With dead ends: 187 [2021-11-02 22:08:33,499 INFO L226 Difference]: Without dead ends: 186 [2021-11-02 22:08:33,500 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8409 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=6067, Invalid=15985, Unknown=0, NotChecked=0, Total=22052 [2021-11-02 22:08:33,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2021-11-02 22:08:33,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 185. [2021-11-02 22:08:33,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 184 states have (on average 1.0054347826086956) internal successors, (185), 184 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:08:33,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 185 transitions. [2021-11-02 22:08:33,507 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 185 transitions. Word has length 178 [2021-11-02 22:08:33,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:08:33,507 INFO L470 AbstractCegarLoop]: Abstraction has 185 states and 185 transitions. [2021-11-02 22:08:33,508 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 120 states, 119 states have (on average 2.9831932773109244) internal successors, (355), 120 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:08:33,508 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 185 transitions. [2021-11-02 22:08:33,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2021-11-02 22:08:33,509 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:08:33,510 INFO L513 BasicCegarLoop]: trace histogram [31, 30, 30, 30, 30, 30, 1, 1, 1] [2021-11-02 22:08:33,543 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2021-11-02 22:08:33,728 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2021-11-02 22:08:33,728 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:08:33,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:08:33,729 INFO L85 PathProgramCache]: Analyzing trace with hash 1166698158, now seen corresponding path program 30 times [2021-11-02 22:08:33,729 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:08:33,729 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752204273] [2021-11-02 22:08:33,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:08:33,729 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:08:33,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:08:35,140 INFO L134 CoverageAnalysis]: Checked inductivity of 2670 backedges. 0 proven. 2670 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:08:35,141 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:08:35,141 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752204273] [2021-11-02 22:08:35,141 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752204273] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:08:35,141 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1160362516] [2021-11-02 22:08:35,142 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-02 22:08:35,142 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:08:35,142 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:08:35,147 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:08:35,147 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2021-11-02 22:08:36,869 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2021-11-02 22:08:36,869 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:08:36,873 INFO L263 TraceCheckSpWp]: Trace formula consists of 457 conjuncts, 63 conjunts are in the unsatisfiable core [2021-11-02 22:08:36,875 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:08:39,835 INFO L134 CoverageAnalysis]: Checked inductivity of 2670 backedges. 0 proven. 2670 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:08:39,835 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1160362516] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:08:39,836 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:08:39,836 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 62] total 123 [2021-11-02 22:08:39,836 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803682888] [2021-11-02 22:08:39,837 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 124 states [2021-11-02 22:08:39,837 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:08:39,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 124 interpolants. [2021-11-02 22:08:39,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3621, Invalid=11631, Unknown=0, NotChecked=0, Total=15252 [2021-11-02 22:08:39,841 INFO L87 Difference]: Start difference. First operand 185 states and 185 transitions. Second operand has 124 states, 123 states have (on average 2.983739837398374) internal successors, (367), 124 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) [2021-11-02 22:08:41,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:08:41,088 INFO L93 Difference]: Finished difference Result 193 states and 193 transitions. [2021-11-02 22:08:41,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-11-02 22:08:41,088 INFO L78 Accepts]: Start accepts. Automaton has has 124 states, 123 states have (on average 2.983739837398374) internal successors, (367), 124 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) Word has length 184 [2021-11-02 22:08:41,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:08:41,089 INFO L225 Difference]: With dead ends: 193 [2021-11-02 22:08:41,089 INFO L226 Difference]: Without dead ends: 192 [2021-11-02 22:08:41,091 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8999 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=6471, Invalid=17091, Unknown=0, NotChecked=0, Total=23562 [2021-11-02 22:08:41,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2021-11-02 22:08:41,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 191. [2021-11-02 22:08:41,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 190 states have (on average 1.0052631578947369) internal successors, (191), 190 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:08:41,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 191 transitions. [2021-11-02 22:08:41,098 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 191 transitions. Word has length 184 [2021-11-02 22:08:41,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:08:41,099 INFO L470 AbstractCegarLoop]: Abstraction has 191 states and 191 transitions. [2021-11-02 22:08:41,099 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 124 states, 123 states have (on average 2.983739837398374) internal successors, (367), 124 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) [2021-11-02 22:08:41,099 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 191 transitions. [2021-11-02 22:08:41,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-11-02 22:08:41,100 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:08:41,101 INFO L513 BasicCegarLoop]: trace histogram [32, 31, 31, 31, 31, 31, 1, 1, 1] [2021-11-02 22:08:41,128 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2021-11-02 22:08:41,304 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:08:41,304 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:08:41,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:08:41,305 INFO L85 PathProgramCache]: Analyzing trace with hash 1973005913, now seen corresponding path program 31 times [2021-11-02 22:08:41,305 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:08:41,305 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141323236] [2021-11-02 22:08:41,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:08:41,305 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:08:41,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:08:42,706 INFO L134 CoverageAnalysis]: Checked inductivity of 2852 backedges. 0 proven. 2852 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:08:42,707 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:08:42,707 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141323236] [2021-11-02 22:08:42,707 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141323236] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:08:42,707 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [419493316] [2021-11-02 22:08:42,707 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-02 22:08:42,708 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:08:42,708 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:08:42,709 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:08:42,710 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2021-11-02 22:08:44,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:08:44,460 INFO L263 TraceCheckSpWp]: Trace formula consists of 471 conjuncts, 65 conjunts are in the unsatisfiable core [2021-11-02 22:08:44,462 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:08:47,679 INFO L134 CoverageAnalysis]: Checked inductivity of 2852 backedges. 0 proven. 2852 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:08:47,679 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [419493316] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:08:47,679 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:08:47,679 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 64] total 127 [2021-11-02 22:08:47,680 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045914297] [2021-11-02 22:08:47,680 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 128 states [2021-11-02 22:08:47,680 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:08:47,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 128 interpolants. [2021-11-02 22:08:47,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3850, Invalid=12406, Unknown=0, NotChecked=0, Total=16256 [2021-11-02 22:08:47,683 INFO L87 Difference]: Start difference. First operand 191 states and 191 transitions. Second operand has 128 states, 127 states have (on average 2.984251968503937) internal successors, (379), 128 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:08:49,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:08:49,095 INFO L93 Difference]: Finished difference Result 199 states and 199 transitions. [2021-11-02 22:08:49,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-11-02 22:08:49,096 INFO L78 Accepts]: Start accepts. Automaton has has 128 states, 127 states have (on average 2.984251968503937) internal successors, (379), 128 states have internal predecessors, (379), 0 states have call successors, (0), 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 190 [2021-11-02 22:08:49,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:08:49,097 INFO L225 Difference]: With dead ends: 199 [2021-11-02 22:08:49,097 INFO L226 Difference]: Without dead ends: 198 [2021-11-02 22:08:49,098 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 157 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9609 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=6888, Invalid=18234, Unknown=0, NotChecked=0, Total=25122 [2021-11-02 22:08:49,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2021-11-02 22:08:49,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 197. [2021-11-02 22:08:49,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 196 states have (on average 1.0051020408163265) internal successors, (197), 196 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:08:49,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 197 transitions. [2021-11-02 22:08:49,103 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 197 transitions. Word has length 190 [2021-11-02 22:08:49,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:08:49,104 INFO L470 AbstractCegarLoop]: Abstraction has 197 states and 197 transitions. [2021-11-02 22:08:49,104 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 128 states, 127 states have (on average 2.984251968503937) internal successors, (379), 128 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:08:49,104 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 197 transitions. [2021-11-02 22:08:49,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2021-11-02 22:08:49,105 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:08:49,106 INFO L513 BasicCegarLoop]: trace histogram [33, 32, 32, 32, 32, 32, 1, 1, 1] [2021-11-02 22:08:49,132 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2021-11-02 22:08:49,308 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2021-11-02 22:08:49,308 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:08:49,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:08:49,309 INFO L85 PathProgramCache]: Analyzing trace with hash 1319193028, now seen corresponding path program 32 times [2021-11-02 22:08:49,309 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:08:49,309 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449164884] [2021-11-02 22:08:49,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:08:49,309 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:08:49,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:08:50,810 INFO L134 CoverageAnalysis]: Checked inductivity of 3040 backedges. 0 proven. 3040 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:08:50,810 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:08:50,811 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449164884] [2021-11-02 22:08:50,811 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449164884] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:08:50,811 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1818739637] [2021-11-02 22:08:50,811 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-02 22:08:50,811 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:08:50,812 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:08:50,836 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:08:50,839 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2021-11-02 22:08:52,739 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-02 22:08:52,739 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:08:52,742 INFO L263 TraceCheckSpWp]: Trace formula consists of 485 conjuncts, 67 conjunts are in the unsatisfiable core [2021-11-02 22:08:52,744 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:08:56,029 INFO L134 CoverageAnalysis]: Checked inductivity of 3040 backedges. 0 proven. 3040 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:08:56,029 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1818739637] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:08:56,029 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:08:56,030 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 66] total 131 [2021-11-02 22:08:56,030 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762154578] [2021-11-02 22:08:56,030 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 132 states [2021-11-02 22:08:56,030 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:08:56,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 132 interpolants. [2021-11-02 22:08:56,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4086, Invalid=13206, Unknown=0, NotChecked=0, Total=17292 [2021-11-02 22:08:56,033 INFO L87 Difference]: Start difference. First operand 197 states and 197 transitions. Second operand has 132 states, 131 states have (on average 2.984732824427481) internal successors, (391), 132 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:08:57,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:08:57,422 INFO L93 Difference]: Finished difference Result 205 states and 205 transitions. [2021-11-02 22:08:57,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-11-02 22:08:57,422 INFO L78 Accepts]: Start accepts. Automaton has has 132 states, 131 states have (on average 2.984732824427481) internal successors, (391), 132 states have internal predecessors, (391), 0 states have call successors, (0), 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 196 [2021-11-02 22:08:57,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:08:57,424 INFO L225 Difference]: With dead ends: 205 [2021-11-02 22:08:57,424 INFO L226 Difference]: Without dead ends: 204 [2021-11-02 22:08:57,426 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 162 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10239 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=7318, Invalid=19414, Unknown=0, NotChecked=0, Total=26732 [2021-11-02 22:08:57,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2021-11-02 22:08:57,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 203. [2021-11-02 22:08:57,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 202 states have (on average 1.004950495049505) internal successors, (203), 202 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:08:57,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 203 transitions. [2021-11-02 22:08:57,433 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 203 transitions. Word has length 196 [2021-11-02 22:08:57,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:08:57,434 INFO L470 AbstractCegarLoop]: Abstraction has 203 states and 203 transitions. [2021-11-02 22:08:57,434 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 132 states, 131 states have (on average 2.984732824427481) internal successors, (391), 132 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:08:57,434 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 203 transitions. [2021-11-02 22:08:57,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2021-11-02 22:08:57,436 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:08:57,436 INFO L513 BasicCegarLoop]: trace histogram [34, 33, 33, 33, 33, 33, 1, 1, 1] [2021-11-02 22:08:57,474 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2021-11-02 22:08:57,656 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2021-11-02 22:08:57,656 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:08:57,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:08:57,656 INFO L85 PathProgramCache]: Analyzing trace with hash -2004653841, now seen corresponding path program 33 times [2021-11-02 22:08:57,657 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:08:57,657 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636374940] [2021-11-02 22:08:57,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:08:57,657 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:08:57,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:08:59,200 INFO L134 CoverageAnalysis]: Checked inductivity of 3234 backedges. 0 proven. 3234 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:08:59,200 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:08:59,201 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636374940] [2021-11-02 22:08:59,201 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636374940] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:08:59,201 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [506392462] [2021-11-02 22:08:59,201 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-02 22:08:59,201 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:08:59,201 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:08:59,202 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:08:59,202 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2021-11-02 22:09:01,392 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 34 check-sat command(s) [2021-11-02 22:09:01,392 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:09:01,398 INFO L263 TraceCheckSpWp]: Trace formula consists of 499 conjuncts, 69 conjunts are in the unsatisfiable core [2021-11-02 22:09:01,400 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:09:04,925 INFO L134 CoverageAnalysis]: Checked inductivity of 3234 backedges. 0 proven. 3234 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:09:04,925 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [506392462] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:09:04,925 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:09:04,925 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [68, 68] total 135 [2021-11-02 22:09:04,925 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065744319] [2021-11-02 22:09:04,926 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 136 states [2021-11-02 22:09:04,926 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:09:04,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 136 interpolants. [2021-11-02 22:09:04,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4329, Invalid=14031, Unknown=0, NotChecked=0, Total=18360 [2021-11-02 22:09:04,929 INFO L87 Difference]: Start difference. First operand 203 states and 203 transitions. Second operand has 136 states, 135 states have (on average 2.9851851851851854) internal successors, (403), 136 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:09:06,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:09:06,444 INFO L93 Difference]: Finished difference Result 211 states and 211 transitions. [2021-11-02 22:09:06,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2021-11-02 22:09:06,445 INFO L78 Accepts]: Start accepts. Automaton has has 136 states, 135 states have (on average 2.9851851851851854) internal successors, (403), 136 states have internal predecessors, (403), 0 states have call successors, (0), 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 202 [2021-11-02 22:09:06,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:09:06,446 INFO L225 Difference]: With dead ends: 211 [2021-11-02 22:09:06,446 INFO L226 Difference]: Without dead ends: 210 [2021-11-02 22:09:06,448 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 167 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10889 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=7761, Invalid=20631, Unknown=0, NotChecked=0, Total=28392 [2021-11-02 22:09:06,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2021-11-02 22:09:06,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 209. [2021-11-02 22:09:06,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 208 states have (on average 1.0048076923076923) internal successors, (209), 208 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:09:06,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 209 transitions. [2021-11-02 22:09:06,456 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 209 transitions. Word has length 202 [2021-11-02 22:09:06,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:09:06,457 INFO L470 AbstractCegarLoop]: Abstraction has 209 states and 209 transitions. [2021-11-02 22:09:06,457 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 136 states, 135 states have (on average 2.9851851851851854) internal successors, (403), 136 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:09:06,457 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 209 transitions. [2021-11-02 22:09:06,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2021-11-02 22:09:06,458 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:09:06,458 INFO L513 BasicCegarLoop]: trace histogram [35, 34, 34, 34, 34, 34, 1, 1, 1] [2021-11-02 22:09:06,504 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2021-11-02 22:09:06,672 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2021-11-02 22:09:06,672 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:09:06,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:09:06,672 INFO L85 PathProgramCache]: Analyzing trace with hash 348011482, now seen corresponding path program 34 times [2021-11-02 22:09:06,673 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:09:06,673 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136277512] [2021-11-02 22:09:06,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:09:06,673 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:09:06,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:09:08,483 INFO L134 CoverageAnalysis]: Checked inductivity of 3434 backedges. 0 proven. 3434 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:09:08,484 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:09:08,484 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136277512] [2021-11-02 22:09:08,484 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136277512] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:09:08,484 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [631421646] [2021-11-02 22:09:08,484 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-02 22:09:08,484 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:09:08,484 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:09:08,485 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:09:08,486 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2021-11-02 22:09:10,638 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-02 22:09:10,638 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:09:10,641 INFO L263 TraceCheckSpWp]: Trace formula consists of 513 conjuncts, 71 conjunts are in the unsatisfiable core [2021-11-02 22:09:10,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:09:14,322 INFO L134 CoverageAnalysis]: Checked inductivity of 3434 backedges. 0 proven. 3434 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:09:14,322 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [631421646] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:09:14,322 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:09:14,322 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [70, 70] total 139 [2021-11-02 22:09:14,323 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687036747] [2021-11-02 22:09:14,323 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 140 states [2021-11-02 22:09:14,323 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:09:14,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 140 interpolants. [2021-11-02 22:09:14,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4579, Invalid=14881, Unknown=0, NotChecked=0, Total=19460 [2021-11-02 22:09:14,325 INFO L87 Difference]: Start difference. First operand 209 states and 209 transitions. Second operand has 140 states, 139 states have (on average 2.985611510791367) internal successors, (415), 140 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:09:15,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:09:15,870 INFO L93 Difference]: Finished difference Result 217 states and 217 transitions. [2021-11-02 22:09:15,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2021-11-02 22:09:15,871 INFO L78 Accepts]: Start accepts. Automaton has has 140 states, 139 states have (on average 2.985611510791367) internal successors, (415), 140 states have internal predecessors, (415), 0 states have call successors, (0), 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 208 [2021-11-02 22:09:15,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:09:15,873 INFO L225 Difference]: With dead ends: 217 [2021-11-02 22:09:15,873 INFO L226 Difference]: Without dead ends: 216 [2021-11-02 22:09:15,875 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 311 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 172 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11559 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=8217, Invalid=21885, Unknown=0, NotChecked=0, Total=30102 [2021-11-02 22:09:15,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2021-11-02 22:09:15,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 215. [2021-11-02 22:09:15,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 214 states have (on average 1.0046728971962617) internal successors, (215), 214 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:09:15,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 215 transitions. [2021-11-02 22:09:15,883 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 215 transitions. Word has length 208 [2021-11-02 22:09:15,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:09:15,883 INFO L470 AbstractCegarLoop]: Abstraction has 215 states and 215 transitions. [2021-11-02 22:09:15,884 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 140 states, 139 states have (on average 2.985611510791367) internal successors, (415), 140 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:09:15,884 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 215 transitions. [2021-11-02 22:09:15,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2021-11-02 22:09:15,885 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:09:15,885 INFO L513 BasicCegarLoop]: trace histogram [36, 35, 35, 35, 35, 35, 1, 1, 1] [2021-11-02 22:09:15,931 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2021-11-02 22:09:16,100 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:09:16,100 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:09:16,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:09:16,101 INFO L85 PathProgramCache]: Analyzing trace with hash 2037117573, now seen corresponding path program 35 times [2021-11-02 22:09:16,101 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:09:16,101 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184839397] [2021-11-02 22:09:16,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:09:16,101 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:09:16,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:09:17,793 INFO L134 CoverageAnalysis]: Checked inductivity of 3640 backedges. 0 proven. 3640 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:09:17,794 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:09:17,794 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184839397] [2021-11-02 22:09:17,794 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184839397] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:09:17,794 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1794820616] [2021-11-02 22:09:17,794 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-02 22:09:17,795 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:09:17,795 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:09:17,800 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:09:17,801 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2021-11-02 22:09:20,122 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 36 check-sat command(s) [2021-11-02 22:09:20,123 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:09:20,126 INFO L263 TraceCheckSpWp]: Trace formula consists of 527 conjuncts, 73 conjunts are in the unsatisfiable core [2021-11-02 22:09:20,129 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:09:24,136 INFO L134 CoverageAnalysis]: Checked inductivity of 3640 backedges. 0 proven. 3640 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:09:24,136 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1794820616] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:09:24,136 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:09:24,137 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [72, 72] total 143 [2021-11-02 22:09:24,137 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875009153] [2021-11-02 22:09:24,137 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 144 states [2021-11-02 22:09:24,137 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:09:24,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 144 interpolants. [2021-11-02 22:09:24,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4836, Invalid=15756, Unknown=0, NotChecked=0, Total=20592 [2021-11-02 22:09:24,140 INFO L87 Difference]: Start difference. First operand 215 states and 215 transitions. Second operand has 144 states, 143 states have (on average 2.986013986013986) internal successors, (427), 144 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) [2021-11-02 22:09:25,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:09:25,842 INFO L93 Difference]: Finished difference Result 223 states and 223 transitions. [2021-11-02 22:09:25,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2021-11-02 22:09:25,842 INFO L78 Accepts]: Start accepts. Automaton has has 144 states, 143 states have (on average 2.986013986013986) internal successors, (427), 144 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) Word has length 214 [2021-11-02 22:09:25,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:09:25,843 INFO L225 Difference]: With dead ends: 223 [2021-11-02 22:09:25,844 INFO L226 Difference]: Without dead ends: 222 [2021-11-02 22:09:25,845 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 320 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 177 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12249 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=8686, Invalid=23176, Unknown=0, NotChecked=0, Total=31862 [2021-11-02 22:09:25,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2021-11-02 22:09:25,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 221. [2021-11-02 22:09:25,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 220 states have (on average 1.0045454545454546) internal successors, (221), 220 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:09:25,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 221 transitions. [2021-11-02 22:09:25,852 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 221 transitions. Word has length 214 [2021-11-02 22:09:25,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:09:25,853 INFO L470 AbstractCegarLoop]: Abstraction has 221 states and 221 transitions. [2021-11-02 22:09:25,853 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 144 states, 143 states have (on average 2.986013986013986) internal successors, (427), 144 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) [2021-11-02 22:09:25,853 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 221 transitions. [2021-11-02 22:09:25,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2021-11-02 22:09:25,854 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:09:25,855 INFO L513 BasicCegarLoop]: trace histogram [37, 36, 36, 36, 36, 36, 1, 1, 1] [2021-11-02 22:09:25,888 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2021-11-02 22:09:26,072 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:09:26,072 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:09:26,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:09:26,073 INFO L85 PathProgramCache]: Analyzing trace with hash -331170576, now seen corresponding path program 36 times [2021-11-02 22:09:26,073 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:09:26,073 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562514800] [2021-11-02 22:09:26,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:09:26,073 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:09:26,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:09:27,854 INFO L134 CoverageAnalysis]: Checked inductivity of 3852 backedges. 0 proven. 3852 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:09:27,855 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:09:27,855 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562514800] [2021-11-02 22:09:27,855 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562514800] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:09:27,855 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [99315835] [2021-11-02 22:09:27,855 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-02 22:09:27,855 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:09:27,855 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:09:27,856 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:09:27,857 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2021-11-02 22:09:30,360 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 37 check-sat command(s) [2021-11-02 22:09:30,360 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:09:30,364 INFO L263 TraceCheckSpWp]: Trace formula consists of 541 conjuncts, 75 conjunts are in the unsatisfiable core [2021-11-02 22:09:30,367 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:09:34,355 INFO L134 CoverageAnalysis]: Checked inductivity of 3852 backedges. 0 proven. 3852 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:09:34,355 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [99315835] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:09:34,355 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:09:34,355 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [74, 74] total 147 [2021-11-02 22:09:34,356 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953783874] [2021-11-02 22:09:34,356 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 148 states [2021-11-02 22:09:34,357 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:09:34,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 148 interpolants. [2021-11-02 22:09:34,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5100, Invalid=16656, Unknown=0, NotChecked=0, Total=21756 [2021-11-02 22:09:34,360 INFO L87 Difference]: Start difference. First operand 221 states and 221 transitions. Second operand has 148 states, 147 states have (on average 2.9863945578231292) internal successors, (439), 148 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:09:36,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:09:36,123 INFO L93 Difference]: Finished difference Result 229 states and 229 transitions. [2021-11-02 22:09:36,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2021-11-02 22:09:36,123 INFO L78 Accepts]: Start accepts. Automaton has has 148 states, 147 states have (on average 2.9863945578231292) internal successors, (439), 148 states have internal predecessors, (439), 0 states have call successors, (0), 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 220 [2021-11-02 22:09:36,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:09:36,124 INFO L225 Difference]: With dead ends: 229 [2021-11-02 22:09:36,124 INFO L226 Difference]: Without dead ends: 228 [2021-11-02 22:09:36,127 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 182 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12959 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=9168, Invalid=24504, Unknown=0, NotChecked=0, Total=33672 [2021-11-02 22:09:36,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2021-11-02 22:09:36,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 227. [2021-11-02 22:09:36,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 226 states have (on average 1.0044247787610618) internal successors, (227), 226 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:09:36,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 227 transitions. [2021-11-02 22:09:36,133 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 227 transitions. Word has length 220 [2021-11-02 22:09:36,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:09:36,133 INFO L470 AbstractCegarLoop]: Abstraction has 227 states and 227 transitions. [2021-11-02 22:09:36,133 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 148 states, 147 states have (on average 2.9863945578231292) internal successors, (439), 148 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:09:36,134 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 227 transitions. [2021-11-02 22:09:36,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2021-11-02 22:09:36,135 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:09:36,135 INFO L513 BasicCegarLoop]: trace histogram [38, 37, 37, 37, 37, 37, 1, 1, 1] [2021-11-02 22:09:36,163 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2021-11-02 22:09:36,336 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2021-11-02 22:09:36,336 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:09:36,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:09:36,336 INFO L85 PathProgramCache]: Analyzing trace with hash 764726043, now seen corresponding path program 37 times [2021-11-02 22:09:36,336 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:09:36,336 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077191329] [2021-11-02 22:09:36,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:09:36,337 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:09:36,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:09:38,219 INFO L134 CoverageAnalysis]: Checked inductivity of 4070 backedges. 0 proven. 4070 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:09:38,220 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:09:38,220 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077191329] [2021-11-02 22:09:38,220 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077191329] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:09:38,220 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1556116669] [2021-11-02 22:09:38,220 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-02 22:09:38,221 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:09:38,221 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:09:38,222 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:09:38,223 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2021-11-02 22:09:40,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:09:40,688 INFO L263 TraceCheckSpWp]: Trace formula consists of 555 conjuncts, 77 conjunts are in the unsatisfiable core [2021-11-02 22:09:40,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:09:45,182 INFO L134 CoverageAnalysis]: Checked inductivity of 4070 backedges. 0 proven. 4070 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:09:45,182 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1556116669] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:09:45,182 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:09:45,182 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [76, 76] total 151 [2021-11-02 22:09:45,183 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859228254] [2021-11-02 22:09:45,183 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 152 states [2021-11-02 22:09:45,184 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:09:45,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 152 interpolants. [2021-11-02 22:09:45,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5371, Invalid=17581, Unknown=0, NotChecked=0, Total=22952 [2021-11-02 22:09:45,187 INFO L87 Difference]: Start difference. First operand 227 states and 227 transitions. Second operand has 152 states, 151 states have (on average 2.986754966887417) internal successors, (451), 152 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:09:47,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:09:47,095 INFO L93 Difference]: Finished difference Result 235 states and 235 transitions. [2021-11-02 22:09:47,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2021-11-02 22:09:47,096 INFO L78 Accepts]: Start accepts. Automaton has has 152 states, 151 states have (on average 2.986754966887417) internal successors, (451), 152 states have internal predecessors, (451), 0 states have call successors, (0), 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 226 [2021-11-02 22:09:47,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:09:47,097 INFO L225 Difference]: With dead ends: 235 [2021-11-02 22:09:47,097 INFO L226 Difference]: Without dead ends: 234 [2021-11-02 22:09:47,099 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 187 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13689 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=9663, Invalid=25869, Unknown=0, NotChecked=0, Total=35532 [2021-11-02 22:09:47,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2021-11-02 22:09:47,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 233. [2021-11-02 22:09:47,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 232 states have (on average 1.0043103448275863) internal successors, (233), 232 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:09:47,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 233 transitions. [2021-11-02 22:09:47,107 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 233 transitions. Word has length 226 [2021-11-02 22:09:47,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:09:47,108 INFO L470 AbstractCegarLoop]: Abstraction has 233 states and 233 transitions. [2021-11-02 22:09:47,108 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 152 states, 151 states have (on average 2.986754966887417) internal successors, (451), 152 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:09:47,108 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 233 transitions. [2021-11-02 22:09:47,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2021-11-02 22:09:47,109 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:09:47,110 INFO L513 BasicCegarLoop]: trace histogram [39, 38, 38, 38, 38, 38, 1, 1, 1] [2021-11-02 22:09:47,153 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2021-11-02 22:09:47,324 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:09:47,324 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:09:47,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:09:47,325 INFO L85 PathProgramCache]: Analyzing trace with hash 592465158, now seen corresponding path program 38 times [2021-11-02 22:09:47,325 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:09:47,325 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653817682] [2021-11-02 22:09:47,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:09:47,325 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:09:47,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:09:49,294 INFO L134 CoverageAnalysis]: Checked inductivity of 4294 backedges. 0 proven. 4294 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:09:49,294 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:09:49,294 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653817682] [2021-11-02 22:09:49,294 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653817682] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:09:49,294 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1499726450] [2021-11-02 22:09:49,294 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-02 22:09:49,294 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:09:49,294 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:09:49,295 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:09:49,296 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2021-11-02 22:09:51,940 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-02 22:09:51,940 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:09:51,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 569 conjuncts, 79 conjunts are in the unsatisfiable core [2021-11-02 22:09:51,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:09:56,416 INFO L134 CoverageAnalysis]: Checked inductivity of 4294 backedges. 0 proven. 4294 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:09:56,416 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1499726450] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:09:56,417 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:09:56,417 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [78, 78] total 155 [2021-11-02 22:09:56,418 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200956677] [2021-11-02 22:09:56,418 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 156 states [2021-11-02 22:09:56,418 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:09:56,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 156 interpolants. [2021-11-02 22:09:56,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5649, Invalid=18531, Unknown=0, NotChecked=0, Total=24180 [2021-11-02 22:09:56,421 INFO L87 Difference]: Start difference. First operand 233 states and 233 transitions. Second operand has 156 states, 155 states have (on average 2.9870967741935486) internal successors, (463), 156 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:09:58,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:09:58,400 INFO L93 Difference]: Finished difference Result 241 states and 241 transitions. [2021-11-02 22:09:58,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2021-11-02 22:09:58,401 INFO L78 Accepts]: Start accepts. Automaton has has 156 states, 155 states have (on average 2.9870967741935486) internal successors, (463), 156 states have internal predecessors, (463), 0 states have call successors, (0), 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 232 [2021-11-02 22:09:58,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:09:58,403 INFO L225 Difference]: With dead ends: 241 [2021-11-02 22:09:58,403 INFO L226 Difference]: Without dead ends: 240 [2021-11-02 22:09:58,407 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 347 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 192 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14439 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=10171, Invalid=27271, Unknown=0, NotChecked=0, Total=37442 [2021-11-02 22:09:58,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2021-11-02 22:09:58,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 239. [2021-11-02 22:09:58,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 238 states have (on average 1.004201680672269) internal successors, (239), 238 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:09:58,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 239 transitions. [2021-11-02 22:09:58,414 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 239 transitions. Word has length 232 [2021-11-02 22:09:58,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:09:58,414 INFO L470 AbstractCegarLoop]: Abstraction has 239 states and 239 transitions. [2021-11-02 22:09:58,414 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 156 states, 155 states have (on average 2.9870967741935486) internal successors, (463), 156 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:09:58,414 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 239 transitions. [2021-11-02 22:09:58,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2021-11-02 22:09:58,416 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:09:58,416 INFO L513 BasicCegarLoop]: trace histogram [40, 39, 39, 39, 39, 39, 1, 1, 1] [2021-11-02 22:09:58,446 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2021-11-02 22:09:58,616 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:09:58,617 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:09:58,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:09:58,617 INFO L85 PathProgramCache]: Analyzing trace with hash 872379057, now seen corresponding path program 39 times [2021-11-02 22:09:58,617 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:09:58,617 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120936867] [2021-11-02 22:09:58,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:09:58,617 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:09:58,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:10:00,907 INFO L134 CoverageAnalysis]: Checked inductivity of 4524 backedges. 0 proven. 4524 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:10:00,907 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:10:00,907 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120936867] [2021-11-02 22:10:00,907 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120936867] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:10:00,907 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1501784614] [2021-11-02 22:10:00,907 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-02 22:10:00,908 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:10:00,908 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:10:00,908 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:10:00,910 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2021-11-02 22:10:03,848 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 40 check-sat command(s) [2021-11-02 22:10:03,848 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:10:03,855 INFO L263 TraceCheckSpWp]: Trace formula consists of 583 conjuncts, 81 conjunts are in the unsatisfiable core [2021-11-02 22:10:03,858 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:10:08,481 INFO L134 CoverageAnalysis]: Checked inductivity of 4524 backedges. 0 proven. 4524 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:10:08,481 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1501784614] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:10:08,481 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:10:08,481 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [80, 80] total 159 [2021-11-02 22:10:08,482 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926672493] [2021-11-02 22:10:08,482 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 160 states [2021-11-02 22:10:08,482 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:10:08,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 160 interpolants. [2021-11-02 22:10:08,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5934, Invalid=19506, Unknown=0, NotChecked=0, Total=25440 [2021-11-02 22:10:08,485 INFO L87 Difference]: Start difference. First operand 239 states and 239 transitions. Second operand has 160 states, 159 states have (on average 2.9874213836477987) internal successors, (475), 160 states have internal predecessors, (475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:10:10,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:10:10,634 INFO L93 Difference]: Finished difference Result 247 states and 247 transitions. [2021-11-02 22:10:10,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2021-11-02 22:10:10,635 INFO L78 Accepts]: Start accepts. Automaton has has 160 states, 159 states have (on average 2.9874213836477987) internal successors, (475), 160 states have internal predecessors, (475), 0 states have call successors, (0), 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 238 [2021-11-02 22:10:10,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:10:10,637 INFO L225 Difference]: With dead ends: 247 [2021-11-02 22:10:10,637 INFO L226 Difference]: Without dead ends: 246 [2021-11-02 22:10:10,640 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 356 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 197 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15209 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=10692, Invalid=28710, Unknown=0, NotChecked=0, Total=39402 [2021-11-02 22:10:10,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2021-11-02 22:10:10,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 245. [2021-11-02 22:10:10,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 244 states have (on average 1.0040983606557377) internal successors, (245), 244 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:10:10,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 245 transitions. [2021-11-02 22:10:10,649 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 245 transitions. Word has length 238 [2021-11-02 22:10:10,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:10:10,650 INFO L470 AbstractCegarLoop]: Abstraction has 245 states and 245 transitions. [2021-11-02 22:10:10,650 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 160 states, 159 states have (on average 2.9874213836477987) internal successors, (475), 160 states have internal predecessors, (475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:10:10,650 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 245 transitions. [2021-11-02 22:10:10,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2021-11-02 22:10:10,652 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:10:10,652 INFO L513 BasicCegarLoop]: trace histogram [41, 40, 40, 40, 40, 40, 1, 1, 1] [2021-11-02 22:10:10,703 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2021-11-02 22:10:10,880 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:10:10,880 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:10:10,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:10:10,880 INFO L85 PathProgramCache]: Analyzing trace with hash 1640524828, now seen corresponding path program 40 times [2021-11-02 22:10:10,881 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:10:10,881 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900701427] [2021-11-02 22:10:10,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:10:10,881 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:10:10,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:10:13,282 INFO L134 CoverageAnalysis]: Checked inductivity of 4760 backedges. 0 proven. 4760 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:10:13,282 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:10:13,282 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900701427] [2021-11-02 22:10:13,282 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900701427] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:10:13,282 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [487908180] [2021-11-02 22:10:13,282 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-02 22:10:13,282 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:10:13,282 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:10:13,284 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:10:13,285 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2021-11-02 22:10:16,161 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-02 22:10:16,161 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:10:16,164 INFO L263 TraceCheckSpWp]: Trace formula consists of 597 conjuncts, 83 conjunts are in the unsatisfiable core [2021-11-02 22:10:16,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:10:20,947 INFO L134 CoverageAnalysis]: Checked inductivity of 4760 backedges. 0 proven. 4760 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:10:20,948 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [487908180] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:10:20,948 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:10:20,948 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [82, 82] total 163 [2021-11-02 22:10:20,948 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033291293] [2021-11-02 22:10:20,952 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 164 states [2021-11-02 22:10:20,953 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:10:20,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 164 interpolants. [2021-11-02 22:10:20,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6226, Invalid=20506, Unknown=0, NotChecked=0, Total=26732 [2021-11-02 22:10:20,957 INFO L87 Difference]: Start difference. First operand 245 states and 245 transitions. Second operand has 164 states, 163 states have (on average 2.9877300613496933) internal successors, (487), 164 states have internal predecessors, (487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:10:23,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:10:23,062 INFO L93 Difference]: Finished difference Result 253 states and 253 transitions. [2021-11-02 22:10:23,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2021-11-02 22:10:23,063 INFO L78 Accepts]: Start accepts. Automaton has has 164 states, 163 states have (on average 2.9877300613496933) internal successors, (487), 164 states have internal predecessors, (487), 0 states have call successors, (0), 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 244 [2021-11-02 22:10:23,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:10:23,064 INFO L225 Difference]: With dead ends: 253 [2021-11-02 22:10:23,064 INFO L226 Difference]: Without dead ends: 252 [2021-11-02 22:10:23,066 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 365 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 202 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15999 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=11226, Invalid=30186, Unknown=0, NotChecked=0, Total=41412 [2021-11-02 22:10:23,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2021-11-02 22:10:23,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 251. [2021-11-02 22:10:23,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 250 states have (on average 1.004) internal successors, (251), 250 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:10:23,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 251 transitions. [2021-11-02 22:10:23,074 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 251 transitions. Word has length 244 [2021-11-02 22:10:23,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:10:23,075 INFO L470 AbstractCegarLoop]: Abstraction has 251 states and 251 transitions. [2021-11-02 22:10:23,075 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 164 states, 163 states have (on average 2.9877300613496933) internal successors, (487), 164 states have internal predecessors, (487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:10:23,075 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 251 transitions. [2021-11-02 22:10:23,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2021-11-02 22:10:23,077 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:10:23,077 INFO L513 BasicCegarLoop]: trace histogram [42, 41, 41, 41, 41, 41, 1, 1, 1] [2021-11-02 22:10:23,108 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2021-11-02 22:10:23,288 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46,44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:10:23,288 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:10:23,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:10:23,289 INFO L85 PathProgramCache]: Analyzing trace with hash 627927367, now seen corresponding path program 41 times [2021-11-02 22:10:23,289 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:10:23,289 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252657220] [2021-11-02 22:10:23,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:10:23,289 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:10:23,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:10:25,575 INFO L134 CoverageAnalysis]: Checked inductivity of 5002 backedges. 0 proven. 5002 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:10:25,575 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:10:25,575 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252657220] [2021-11-02 22:10:25,575 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252657220] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:10:25,575 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [35119266] [2021-11-02 22:10:25,575 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-02 22:10:25,576 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:10:25,576 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:10:25,576 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:10:25,577 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2021-11-02 22:10:28,768 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 42 check-sat command(s) [2021-11-02 22:10:28,768 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:10:28,772 INFO L263 TraceCheckSpWp]: Trace formula consists of 611 conjuncts, 85 conjunts are in the unsatisfiable core [2021-11-02 22:10:28,775 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:10:33,699 INFO L134 CoverageAnalysis]: Checked inductivity of 5002 backedges. 0 proven. 5002 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:10:33,699 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [35119266] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:10:33,700 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:10:33,700 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [84, 84] total 167 [2021-11-02 22:10:33,700 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926992228] [2021-11-02 22:10:33,700 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 168 states [2021-11-02 22:10:33,701 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:10:33,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 168 interpolants. [2021-11-02 22:10:33,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6525, Invalid=21531, Unknown=0, NotChecked=0, Total=28056 [2021-11-02 22:10:33,703 INFO L87 Difference]: Start difference. First operand 251 states and 251 transitions. Second operand has 168 states, 167 states have (on average 2.9880239520958085) internal successors, (499), 168 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:10:35,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:10:35,941 INFO L93 Difference]: Finished difference Result 259 states and 259 transitions. [2021-11-02 22:10:35,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2021-11-02 22:10:35,942 INFO L78 Accepts]: Start accepts. Automaton has has 168 states, 167 states have (on average 2.9880239520958085) internal successors, (499), 168 states have internal predecessors, (499), 0 states have call successors, (0), 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 250 [2021-11-02 22:10:35,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:10:35,943 INFO L225 Difference]: With dead ends: 259 [2021-11-02 22:10:35,944 INFO L226 Difference]: Without dead ends: 258 [2021-11-02 22:10:35,946 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 374 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 207 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16809 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=11773, Invalid=31699, Unknown=0, NotChecked=0, Total=43472 [2021-11-02 22:10:35,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2021-11-02 22:10:35,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 257. [2021-11-02 22:10:35,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 256 states have (on average 1.00390625) internal successors, (257), 256 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:10:35,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 257 transitions. [2021-11-02 22:10:35,954 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 257 transitions. Word has length 250 [2021-11-02 22:10:35,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:10:35,955 INFO L470 AbstractCegarLoop]: Abstraction has 257 states and 257 transitions. [2021-11-02 22:10:35,955 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 168 states, 167 states have (on average 2.9880239520958085) internal successors, (499), 168 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:10:35,955 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 257 transitions. [2021-11-02 22:10:35,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2021-11-02 22:10:35,957 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:10:35,957 INFO L513 BasicCegarLoop]: trace histogram [43, 42, 42, 42, 42, 42, 1, 1, 1] [2021-11-02 22:10:36,007 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0 [2021-11-02 22:10:36,172 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2021-11-02 22:10:36,172 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:10:36,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:10:36,172 INFO L85 PathProgramCache]: Analyzing trace with hash 156015154, now seen corresponding path program 42 times [2021-11-02 22:10:36,173 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:10:36,173 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907565653] [2021-11-02 22:10:36,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:10:36,173 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:10:36,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:10:38,585 INFO L134 CoverageAnalysis]: Checked inductivity of 5250 backedges. 0 proven. 5250 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:10:38,586 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:10:38,586 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907565653] [2021-11-02 22:10:38,586 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907565653] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:10:38,586 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [985894324] [2021-11-02 22:10:38,586 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-02 22:10:38,586 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:10:38,586 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:10:38,587 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:10:38,591 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2021-11-02 22:10:42,015 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 43 check-sat command(s) [2021-11-02 22:10:42,015 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:10:42,019 INFO L263 TraceCheckSpWp]: Trace formula consists of 625 conjuncts, 87 conjunts are in the unsatisfiable core [2021-11-02 22:10:42,022 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:10:47,270 INFO L134 CoverageAnalysis]: Checked inductivity of 5250 backedges. 0 proven. 5250 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:10:47,270 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [985894324] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:10:47,271 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:10:47,271 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [86, 86] total 171 [2021-11-02 22:10:47,271 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245919609] [2021-11-02 22:10:47,271 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 172 states [2021-11-02 22:10:47,271 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:10:47,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 172 interpolants. [2021-11-02 22:10:47,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6831, Invalid=22581, Unknown=0, NotChecked=0, Total=29412 [2021-11-02 22:10:47,276 INFO L87 Difference]: Start difference. First operand 257 states and 257 transitions. Second operand has 172 states, 171 states have (on average 2.9883040935672516) internal successors, (511), 172 states have internal predecessors, (511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:10:49,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:10:49,658 INFO L93 Difference]: Finished difference Result 265 states and 265 transitions. [2021-11-02 22:10:49,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2021-11-02 22:10:49,659 INFO L78 Accepts]: Start accepts. Automaton has has 172 states, 171 states have (on average 2.9883040935672516) internal successors, (511), 172 states have internal predecessors, (511), 0 states have call successors, (0), 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 256 [2021-11-02 22:10:49,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:10:49,660 INFO L225 Difference]: With dead ends: 265 [2021-11-02 22:10:49,660 INFO L226 Difference]: Without dead ends: 264 [2021-11-02 22:10:49,663 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 383 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 212 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17639 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=12333, Invalid=33249, Unknown=0, NotChecked=0, Total=45582 [2021-11-02 22:10:49,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2021-11-02 22:10:49,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 263. [2021-11-02 22:10:49,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 262 states have (on average 1.0038167938931297) internal successors, (263), 262 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:10:49,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 263 transitions. [2021-11-02 22:10:49,672 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 263 transitions. Word has length 256 [2021-11-02 22:10:49,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:10:49,672 INFO L470 AbstractCegarLoop]: Abstraction has 263 states and 263 transitions. [2021-11-02 22:10:49,673 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 172 states, 171 states have (on average 2.9883040935672516) internal successors, (511), 172 states have internal predecessors, (511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:10:49,673 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 263 transitions. [2021-11-02 22:10:49,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2021-11-02 22:10:49,675 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:10:49,675 INFO L513 BasicCegarLoop]: trace histogram [44, 43, 43, 43, 43, 43, 1, 1, 1] [2021-11-02 22:10:49,733 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0 [2021-11-02 22:10:49,900 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2021-11-02 22:10:49,900 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:10:49,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:10:49,901 INFO L85 PathProgramCache]: Analyzing trace with hash 73412317, now seen corresponding path program 43 times [2021-11-02 22:10:49,901 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:10:49,901 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255344060] [2021-11-02 22:10:49,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:10:49,901 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:10:49,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:10:52,503 INFO L134 CoverageAnalysis]: Checked inductivity of 5504 backedges. 0 proven. 5504 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:10:52,503 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:10:52,503 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255344060] [2021-11-02 22:10:52,504 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255344060] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:10:52,504 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [432543152] [2021-11-02 22:10:52,504 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-02 22:10:52,504 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:10:52,504 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:10:52,505 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:10:52,506 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2021-11-02 22:10:55,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:10:55,843 INFO L263 TraceCheckSpWp]: Trace formula consists of 639 conjuncts, 89 conjunts are in the unsatisfiable core [2021-11-02 22:10:55,846 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:11:01,331 INFO L134 CoverageAnalysis]: Checked inductivity of 5504 backedges. 0 proven. 5504 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:11:01,331 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [432543152] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:11:01,331 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:11:01,331 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [88, 88] total 175 [2021-11-02 22:11:01,331 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776580546] [2021-11-02 22:11:01,332 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 176 states [2021-11-02 22:11:01,332 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:11:01,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 176 interpolants. [2021-11-02 22:11:01,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7144, Invalid=23656, Unknown=0, NotChecked=0, Total=30800 [2021-11-02 22:11:01,335 INFO L87 Difference]: Start difference. First operand 263 states and 263 transitions. Second operand has 176 states, 175 states have (on average 2.9885714285714284) internal successors, (523), 176 states have internal predecessors, (523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:11:03,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:11:03,719 INFO L93 Difference]: Finished difference Result 271 states and 271 transitions. [2021-11-02 22:11:03,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2021-11-02 22:11:03,720 INFO L78 Accepts]: Start accepts. Automaton has has 176 states, 175 states have (on average 2.9885714285714284) internal successors, (523), 176 states have internal predecessors, (523), 0 states have call successors, (0), 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 262 [2021-11-02 22:11:03,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:11:03,721 INFO L225 Difference]: With dead ends: 271 [2021-11-02 22:11:03,721 INFO L226 Difference]: Without dead ends: 270 [2021-11-02 22:11:03,723 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 392 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 217 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18489 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=12906, Invalid=34836, Unknown=0, NotChecked=0, Total=47742 [2021-11-02 22:11:03,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2021-11-02 22:11:03,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 269. [2021-11-02 22:11:03,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 268 states have (on average 1.0037313432835822) internal successors, (269), 268 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:11:03,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 269 transitions. [2021-11-02 22:11:03,729 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 269 transitions. Word has length 262 [2021-11-02 22:11:03,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:11:03,730 INFO L470 AbstractCegarLoop]: Abstraction has 269 states and 269 transitions. [2021-11-02 22:11:03,730 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 176 states, 175 states have (on average 2.9885714285714284) internal successors, (523), 176 states have internal predecessors, (523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:11:03,730 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 269 transitions. [2021-11-02 22:11:03,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2021-11-02 22:11:03,732 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:11:03,732 INFO L513 BasicCegarLoop]: trace histogram [45, 44, 44, 44, 44, 44, 1, 1, 1] [2021-11-02 22:11:03,770 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Ended with exit code 0 [2021-11-02 22:11:03,948 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2021-11-02 22:11:03,948 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:11:03,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:11:03,948 INFO L85 PathProgramCache]: Analyzing trace with hash -1791076536, now seen corresponding path program 44 times [2021-11-02 22:11:03,949 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:11:03,949 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126444477] [2021-11-02 22:11:03,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:11:03,949 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:11:04,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:11:06,626 INFO L134 CoverageAnalysis]: Checked inductivity of 5764 backedges. 0 proven. 5764 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:11:06,626 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:11:06,627 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126444477] [2021-11-02 22:11:06,627 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126444477] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:11:06,627 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [438821897] [2021-11-02 22:11:06,627 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-02 22:11:06,627 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:11:06,627 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:11:06,631 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:11:06,632 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2021-11-02 22:11:10,096 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-02 22:11:10,096 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:11:10,099 INFO L263 TraceCheckSpWp]: Trace formula consists of 653 conjuncts, 91 conjunts are in the unsatisfiable core [2021-11-02 22:11:10,118 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:11:15,557 INFO L134 CoverageAnalysis]: Checked inductivity of 5764 backedges. 0 proven. 5764 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:11:15,557 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [438821897] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:11:15,558 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:11:15,558 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [90, 90] total 179 [2021-11-02 22:11:15,558 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534843477] [2021-11-02 22:11:15,558 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 180 states [2021-11-02 22:11:15,558 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:11:15,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 180 interpolants. [2021-11-02 22:11:15,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7464, Invalid=24756, Unknown=0, NotChecked=0, Total=32220 [2021-11-02 22:11:15,561 INFO L87 Difference]: Start difference. First operand 269 states and 269 transitions. Second operand has 180 states, 179 states have (on average 2.988826815642458) internal successors, (535), 180 states have internal predecessors, (535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:11:18,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:11:18,057 INFO L93 Difference]: Finished difference Result 277 states and 277 transitions. [2021-11-02 22:11:18,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2021-11-02 22:11:18,058 INFO L78 Accepts]: Start accepts. Automaton has has 180 states, 179 states have (on average 2.988826815642458) internal successors, (535), 180 states have internal predecessors, (535), 0 states have call successors, (0), 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 268 [2021-11-02 22:11:18,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:11:18,060 INFO L225 Difference]: With dead ends: 277 [2021-11-02 22:11:18,060 INFO L226 Difference]: Without dead ends: 276 [2021-11-02 22:11:18,064 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 401 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 222 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19359 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=13492, Invalid=36460, Unknown=0, NotChecked=0, Total=49952 [2021-11-02 22:11:18,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2021-11-02 22:11:18,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 275. [2021-11-02 22:11:18,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 274 states have (on average 1.0036496350364963) internal successors, (275), 274 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:11:18,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 275 transitions. [2021-11-02 22:11:18,072 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 275 transitions. Word has length 268 [2021-11-02 22:11:18,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:11:18,072 INFO L470 AbstractCegarLoop]: Abstraction has 275 states and 275 transitions. [2021-11-02 22:11:18,073 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 180 states, 179 states have (on average 2.988826815642458) internal successors, (535), 180 states have internal predecessors, (535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:11:18,073 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 275 transitions. [2021-11-02 22:11:18,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2021-11-02 22:11:18,075 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:11:18,075 INFO L513 BasicCegarLoop]: trace histogram [46, 45, 45, 45, 45, 45, 1, 1, 1] [2021-11-02 22:11:18,127 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Forceful destruction successful, exit code 0 [2021-11-02 22:11:18,288 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:11:18,288 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:11:18,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:11:18,289 INFO L85 PathProgramCache]: Analyzing trace with hash -1659288717, now seen corresponding path program 45 times [2021-11-02 22:11:18,289 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:11:18,289 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360136893] [2021-11-02 22:11:18,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:11:18,289 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:11:18,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:11:21,134 INFO L134 CoverageAnalysis]: Checked inductivity of 6030 backedges. 0 proven. 6030 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:11:21,135 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:11:21,135 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360136893] [2021-11-02 22:11:21,135 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360136893] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:11:21,135 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [868368482] [2021-11-02 22:11:21,135 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-02 22:11:21,135 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:11:21,135 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:11:21,136 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:11:21,137 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2021-11-02 22:11:25,103 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 46 check-sat command(s) [2021-11-02 22:11:25,103 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:11:25,109 INFO L263 TraceCheckSpWp]: Trace formula consists of 667 conjuncts, 93 conjunts are in the unsatisfiable core [2021-11-02 22:11:25,113 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:11:31,098 INFO L134 CoverageAnalysis]: Checked inductivity of 6030 backedges. 0 proven. 6030 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:11:31,098 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [868368482] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:11:31,098 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:11:31,099 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [92, 92] total 183 [2021-11-02 22:11:31,099 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957872356] [2021-11-02 22:11:31,100 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 184 states [2021-11-02 22:11:31,100 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:11:31,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 184 interpolants. [2021-11-02 22:11:31,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7791, Invalid=25881, Unknown=0, NotChecked=0, Total=33672 [2021-11-02 22:11:31,105 INFO L87 Difference]: Start difference. First operand 275 states and 275 transitions. Second operand has 184 states, 183 states have (on average 2.989071038251366) internal successors, (547), 184 states have internal predecessors, (547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:11:33,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:11:33,713 INFO L93 Difference]: Finished difference Result 283 states and 283 transitions. [2021-11-02 22:11:33,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2021-11-02 22:11:33,713 INFO L78 Accepts]: Start accepts. Automaton has has 184 states, 183 states have (on average 2.989071038251366) internal successors, (547), 184 states have internal predecessors, (547), 0 states have call successors, (0), 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 274 [2021-11-02 22:11:33,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:11:33,715 INFO L225 Difference]: With dead ends: 283 [2021-11-02 22:11:33,715 INFO L226 Difference]: Without dead ends: 282 [2021-11-02 22:11:33,718 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 410 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 227 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20249 ImplicationChecksByTransitivity, 8.6s TimeCoverageRelationStatistics Valid=14091, Invalid=38121, Unknown=0, NotChecked=0, Total=52212 [2021-11-02 22:11:33,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2021-11-02 22:11:33,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 281. [2021-11-02 22:11:33,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 280 states have (on average 1.0035714285714286) internal successors, (281), 280 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:11:33,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 281 transitions. [2021-11-02 22:11:33,725 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 281 transitions. Word has length 274 [2021-11-02 22:11:33,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:11:33,726 INFO L470 AbstractCegarLoop]: Abstraction has 281 states and 281 transitions. [2021-11-02 22:11:33,726 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 184 states, 183 states have (on average 2.989071038251366) internal successors, (547), 184 states have internal predecessors, (547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:11:33,726 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 281 transitions. [2021-11-02 22:11:33,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2021-11-02 22:11:33,728 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:11:33,728 INFO L513 BasicCegarLoop]: trace histogram [47, 46, 46, 46, 46, 46, 1, 1, 1] [2021-11-02 22:11:33,770 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Ended with exit code 0 [2021-11-02 22:11:33,943 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable51 [2021-11-02 22:11:33,944 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:11:33,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:11:33,944 INFO L85 PathProgramCache]: Analyzing trace with hash -88136866, now seen corresponding path program 46 times [2021-11-02 22:11:33,944 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:11:33,944 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330786937] [2021-11-02 22:11:33,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:11:33,944 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:11:34,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:11:36,713 INFO L134 CoverageAnalysis]: Checked inductivity of 6302 backedges. 0 proven. 6302 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:11:36,713 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:11:36,714 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330786937] [2021-11-02 22:11:36,714 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330786937] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:11:36,714 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1029412696] [2021-11-02 22:11:36,714 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-02 22:11:36,714 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:11:36,714 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:11:36,715 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:11:36,719 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2021-11-02 22:11:40,497 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-02 22:11:40,497 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:11:40,501 INFO L263 TraceCheckSpWp]: Trace formula consists of 681 conjuncts, 95 conjunts are in the unsatisfiable core [2021-11-02 22:11:40,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:11:46,673 INFO L134 CoverageAnalysis]: Checked inductivity of 6302 backedges. 0 proven. 6302 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:11:46,673 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1029412696] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:11:46,673 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:11:46,673 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [94, 94] total 187 [2021-11-02 22:11:46,673 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667594531] [2021-11-02 22:11:46,674 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 188 states [2021-11-02 22:11:46,674 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:11:46,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 188 interpolants. [2021-11-02 22:11:46,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8125, Invalid=27031, Unknown=0, NotChecked=0, Total=35156 [2021-11-02 22:11:46,679 INFO L87 Difference]: Start difference. First operand 281 states and 281 transitions. Second operand has 188 states, 187 states have (on average 2.9893048128342246) internal successors, (559), 188 states have internal predecessors, (559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:11:49,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:11:49,580 INFO L93 Difference]: Finished difference Result 289 states and 289 transitions. [2021-11-02 22:11:49,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2021-11-02 22:11:49,580 INFO L78 Accepts]: Start accepts. Automaton has has 188 states, 187 states have (on average 2.9893048128342246) internal successors, (559), 188 states have internal predecessors, (559), 0 states have call successors, (0), 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 280 [2021-11-02 22:11:49,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:11:49,582 INFO L225 Difference]: With dead ends: 289 [2021-11-02 22:11:49,582 INFO L226 Difference]: Without dead ends: 288 [2021-11-02 22:11:49,586 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 419 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 232 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21159 ImplicationChecksByTransitivity, 8.8s TimeCoverageRelationStatistics Valid=14703, Invalid=39819, Unknown=0, NotChecked=0, Total=54522 [2021-11-02 22:11:49,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2021-11-02 22:11:49,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 287. [2021-11-02 22:11:49,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 286 states have (on average 1.0034965034965035) internal successors, (287), 286 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:11:49,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 287 transitions. [2021-11-02 22:11:49,594 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 287 transitions. Word has length 280 [2021-11-02 22:11:49,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:11:49,594 INFO L470 AbstractCegarLoop]: Abstraction has 287 states and 287 transitions. [2021-11-02 22:11:49,595 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 188 states, 187 states have (on average 2.9893048128342246) internal successors, (559), 188 states have internal predecessors, (559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:11:49,595 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 287 transitions. [2021-11-02 22:11:49,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2021-11-02 22:11:49,597 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:11:49,597 INFO L513 BasicCegarLoop]: trace histogram [48, 47, 47, 47, 47, 47, 1, 1, 1] [2021-11-02 22:11:49,647 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2021-11-02 22:11:49,814 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:11:49,814 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:11:49,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:11:49,815 INFO L85 PathProgramCache]: Analyzing trace with hash -442882295, now seen corresponding path program 47 times [2021-11-02 22:11:49,815 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:11:49,815 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414723693] [2021-11-02 22:11:49,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:11:49,815 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:11:49,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:11:52,668 INFO L134 CoverageAnalysis]: Checked inductivity of 6580 backedges. 0 proven. 6580 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:11:52,668 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:11:52,668 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414723693] [2021-11-02 22:11:52,668 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414723693] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:11:52,669 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1732385074] [2021-11-02 22:11:52,669 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-02 22:11:52,669 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:11:52,669 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:11:52,672 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:11:52,672 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2021-11-02 22:11:56,723 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 48 check-sat command(s) [2021-11-02 22:11:56,723 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:11:56,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 695 conjuncts, 97 conjunts are in the unsatisfiable core [2021-11-02 22:11:56,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:12:02,915 INFO L134 CoverageAnalysis]: Checked inductivity of 6580 backedges. 0 proven. 6580 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:12:02,916 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1732385074] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:12:02,916 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:12:02,916 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 96] total 191 [2021-11-02 22:12:02,916 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607215975] [2021-11-02 22:12:02,917 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 192 states [2021-11-02 22:12:02,917 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:12:02,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 192 interpolants. [2021-11-02 22:12:02,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8466, Invalid=28206, Unknown=0, NotChecked=0, Total=36672 [2021-11-02 22:12:02,922 INFO L87 Difference]: Start difference. First operand 287 states and 287 transitions. Second operand has 192 states, 191 states have (on average 2.9895287958115184) internal successors, (571), 192 states have internal predecessors, (571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:12:05,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:12:05,874 INFO L93 Difference]: Finished difference Result 295 states and 295 transitions. [2021-11-02 22:12:05,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2021-11-02 22:12:05,950 INFO L78 Accepts]: Start accepts. Automaton has has 192 states, 191 states have (on average 2.9895287958115184) internal successors, (571), 192 states have internal predecessors, (571), 0 states have call successors, (0), 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 286 [2021-11-02 22:12:05,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:12:05,952 INFO L225 Difference]: With dead ends: 295 [2021-11-02 22:12:05,952 INFO L226 Difference]: Without dead ends: 294 [2021-11-02 22:12:05,954 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 428 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 237 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22089 ImplicationChecksByTransitivity, 9.0s TimeCoverageRelationStatistics Valid=15328, Invalid=41554, Unknown=0, NotChecked=0, Total=56882 [2021-11-02 22:12:05,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2021-11-02 22:12:05,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 293. [2021-11-02 22:12:05,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 292 states have (on average 1.0034246575342465) internal successors, (293), 292 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:12:05,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 293 transitions. [2021-11-02 22:12:05,965 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 293 transitions. Word has length 286 [2021-11-02 22:12:05,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:12:05,965 INFO L470 AbstractCegarLoop]: Abstraction has 293 states and 293 transitions. [2021-11-02 22:12:05,965 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 192 states, 191 states have (on average 2.9895287958115184) internal successors, (571), 192 states have internal predecessors, (571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:12:05,966 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 293 transitions. [2021-11-02 22:12:05,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2021-11-02 22:12:05,967 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:12:05,968 INFO L513 BasicCegarLoop]: trace histogram [49, 48, 48, 48, 48, 48, 1, 1, 1] [2021-11-02 22:12:06,013 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Forceful destruction successful, exit code 0 [2021-11-02 22:12:06,196 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,51 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:12:06,196 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:12:06,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:12:06,196 INFO L85 PathProgramCache]: Analyzing trace with hash 145784436, now seen corresponding path program 48 times [2021-11-02 22:12:06,197 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:12:06,197 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585204363] [2021-11-02 22:12:06,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:12:06,197 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:12:06,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:12:09,122 INFO L134 CoverageAnalysis]: Checked inductivity of 6864 backedges. 0 proven. 6864 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:12:09,122 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:12:09,122 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585204363] [2021-11-02 22:12:09,122 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585204363] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:12:09,122 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1886010306] [2021-11-02 22:12:09,122 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-02 22:12:09,122 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:12:09,122 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:12:09,123 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:12:09,124 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2021-11-02 22:12:13,412 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 49 check-sat command(s) [2021-11-02 22:12:13,412 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:12:13,419 INFO L263 TraceCheckSpWp]: Trace formula consists of 709 conjuncts, 99 conjunts are in the unsatisfiable core [2021-11-02 22:12:13,422 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:12:19,933 INFO L134 CoverageAnalysis]: Checked inductivity of 6864 backedges. 0 proven. 6864 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:12:19,933 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1886010306] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:12:19,933 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:12:19,933 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [98, 98] total 195 [2021-11-02 22:12:19,933 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051040705] [2021-11-02 22:12:19,934 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 196 states [2021-11-02 22:12:19,934 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:12:19,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 196 interpolants. [2021-11-02 22:12:19,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8814, Invalid=29406, Unknown=0, NotChecked=0, Total=38220 [2021-11-02 22:12:19,940 INFO L87 Difference]: Start difference. First operand 293 states and 293 transitions. Second operand has 196 states, 195 states have (on average 2.98974358974359) internal successors, (583), 196 states have internal predecessors, (583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:12:23,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:12:23,213 INFO L93 Difference]: Finished difference Result 301 states and 301 transitions. [2021-11-02 22:12:23,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2021-11-02 22:12:23,213 INFO L78 Accepts]: Start accepts. Automaton has has 196 states, 195 states have (on average 2.98974358974359) internal successors, (583), 196 states have internal predecessors, (583), 0 states have call successors, (0), 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 292 [2021-11-02 22:12:23,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:12:23,215 INFO L225 Difference]: With dead ends: 301 [2021-11-02 22:12:23,215 INFO L226 Difference]: Without dead ends: 300 [2021-11-02 22:12:23,217 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 437 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 242 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23039 ImplicationChecksByTransitivity, 9.5s TimeCoverageRelationStatistics Valid=15966, Invalid=43326, Unknown=0, NotChecked=0, Total=59292 [2021-11-02 22:12:23,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2021-11-02 22:12:23,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 299. [2021-11-02 22:12:23,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 298 states have (on average 1.0033557046979866) internal successors, (299), 298 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:12:23,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 299 transitions. [2021-11-02 22:12:23,225 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 299 transitions. Word has length 292 [2021-11-02 22:12:23,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:12:23,225 INFO L470 AbstractCegarLoop]: Abstraction has 299 states and 299 transitions. [2021-11-02 22:12:23,226 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 196 states, 195 states have (on average 2.98974358974359) internal successors, (583), 196 states have internal predecessors, (583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:12:23,226 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 299 transitions. [2021-11-02 22:12:23,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2021-11-02 22:12:23,228 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:12:23,228 INFO L513 BasicCegarLoop]: trace histogram [50, 49, 49, 49, 49, 49, 1, 1, 1] [2021-11-02 22:12:23,292 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Forceful destruction successful, exit code 0 [2021-11-02 22:12:23,452 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable54 [2021-11-02 22:12:23,452 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:12:23,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:12:23,452 INFO L85 PathProgramCache]: Analyzing trace with hash 1571051935, now seen corresponding path program 49 times [2021-11-02 22:12:23,453 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:12:23,453 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808664295] [2021-11-02 22:12:23,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:12:23,453 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:12:23,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:12:26,556 INFO L134 CoverageAnalysis]: Checked inductivity of 7154 backedges. 0 proven. 7154 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:12:26,556 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:12:26,557 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808664295] [2021-11-02 22:12:26,557 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808664295] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:12:26,557 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [279197131] [2021-11-02 22:12:26,557 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-02 22:12:26,557 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:12:26,557 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:12:26,558 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:12:26,559 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2021-11-02 22:12:30,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:12:30,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 723 conjuncts, 101 conjunts are in the unsatisfiable core [2021-11-02 22:12:30,865 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:12:37,701 INFO L134 CoverageAnalysis]: Checked inductivity of 7154 backedges. 0 proven. 7154 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:12:37,701 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [279197131] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:12:37,701 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:12:37,701 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [100, 100] total 199 [2021-11-02 22:12:37,701 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303346545] [2021-11-02 22:12:37,702 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 200 states [2021-11-02 22:12:37,702 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:12:37,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 200 interpolants. [2021-11-02 22:12:37,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9169, Invalid=30631, Unknown=0, NotChecked=0, Total=39800 [2021-11-02 22:12:37,708 INFO L87 Difference]: Start difference. First operand 299 states and 299 transitions. Second operand has 200 states, 199 states have (on average 2.9899497487437188) internal successors, (595), 200 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:12:40,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:12:40,976 INFO L93 Difference]: Finished difference Result 307 states and 307 transitions. [2021-11-02 22:12:40,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2021-11-02 22:12:40,976 INFO L78 Accepts]: Start accepts. Automaton has has 200 states, 199 states have (on average 2.9899497487437188) internal successors, (595), 200 states have internal predecessors, (595), 0 states have call successors, (0), 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 298 [2021-11-02 22:12:40,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:12:40,978 INFO L225 Difference]: With dead ends: 307 [2021-11-02 22:12:40,978 INFO L226 Difference]: Without dead ends: 306 [2021-11-02 22:12:40,981 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 446 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 247 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24009 ImplicationChecksByTransitivity, 10.1s TimeCoverageRelationStatistics Valid=16617, Invalid=45135, Unknown=0, NotChecked=0, Total=61752 [2021-11-02 22:12:40,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2021-11-02 22:12:40,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 305. [2021-11-02 22:12:40,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 305 states, 304 states have (on average 1.0032894736842106) internal successors, (305), 304 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:12:40,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 305 transitions. [2021-11-02 22:12:40,988 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 305 transitions. Word has length 298 [2021-11-02 22:12:40,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:12:40,989 INFO L470 AbstractCegarLoop]: Abstraction has 305 states and 305 transitions. [2021-11-02 22:12:40,989 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 200 states, 199 states have (on average 2.9899497487437188) internal successors, (595), 200 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:12:40,989 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 305 transitions. [2021-11-02 22:12:40,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2021-11-02 22:12:40,991 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:12:40,992 INFO L513 BasicCegarLoop]: trace histogram [51, 50, 50, 50, 50, 50, 1, 1, 1] [2021-11-02 22:12:41,032 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Forceful destruction successful, exit code 0 [2021-11-02 22:12:41,208 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2021-11-02 22:12:41,208 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:12:41,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:12:41,209 INFO L85 PathProgramCache]: Analyzing trace with hash -944510838, now seen corresponding path program 50 times [2021-11-02 22:12:41,209 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:12:41,209 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268989667] [2021-11-02 22:12:41,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:12:41,209 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:12:41,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:12:44,385 INFO L134 CoverageAnalysis]: Checked inductivity of 7450 backedges. 0 proven. 7450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:12:44,385 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:12:44,386 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268989667] [2021-11-02 22:12:44,386 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268989667] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:12:44,386 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1611137890] [2021-11-02 22:12:44,386 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-02 22:12:44,386 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:12:44,386 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:12:44,387 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:12:44,387 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2021-11-02 22:12:48,857 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-02 22:12:48,857 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:12:48,861 INFO L263 TraceCheckSpWp]: Trace formula consists of 737 conjuncts, 103 conjunts are in the unsatisfiable core [2021-11-02 22:12:48,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:12:55,910 INFO L134 CoverageAnalysis]: Checked inductivity of 7450 backedges. 0 proven. 7450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:12:55,910 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1611137890] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:12:55,910 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:12:55,911 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [102, 102] total 203 [2021-11-02 22:12:55,911 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616277504] [2021-11-02 22:12:55,911 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 204 states [2021-11-02 22:12:55,911 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:12:55,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 204 interpolants. [2021-11-02 22:12:55,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9531, Invalid=31881, Unknown=0, NotChecked=0, Total=41412 [2021-11-02 22:12:55,915 INFO L87 Difference]: Start difference. First operand 305 states and 305 transitions. Second operand has 204 states, 203 states have (on average 2.9901477832512313) internal successors, (607), 204 states have internal predecessors, (607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:12:59,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:12:59,401 INFO L93 Difference]: Finished difference Result 313 states and 313 transitions. [2021-11-02 22:12:59,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2021-11-02 22:12:59,402 INFO L78 Accepts]: Start accepts. Automaton has has 204 states, 203 states have (on average 2.9901477832512313) internal successors, (607), 204 states have internal predecessors, (607), 0 states have call successors, (0), 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 304 [2021-11-02 22:12:59,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:12:59,403 INFO L225 Difference]: With dead ends: 313 [2021-11-02 22:12:59,403 INFO L226 Difference]: Without dead ends: 312 [2021-11-02 22:12:59,409 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 455 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 252 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24999 ImplicationChecksByTransitivity, 10.5s TimeCoverageRelationStatistics Valid=17281, Invalid=46981, Unknown=0, NotChecked=0, Total=64262 [2021-11-02 22:12:59,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2021-11-02 22:12:59,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 311. [2021-11-02 22:12:59,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 311 states, 310 states have (on average 1.0032258064516129) internal successors, (311), 310 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:12:59,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 311 transitions. [2021-11-02 22:12:59,417 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 311 transitions. Word has length 304 [2021-11-02 22:12:59,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:12:59,418 INFO L470 AbstractCegarLoop]: Abstraction has 311 states and 311 transitions. [2021-11-02 22:12:59,418 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 204 states, 203 states have (on average 2.9901477832512313) internal successors, (607), 204 states have internal predecessors, (607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:12:59,418 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 311 transitions. [2021-11-02 22:12:59,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2021-11-02 22:12:59,420 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:12:59,420 INFO L513 BasicCegarLoop]: trace histogram [52, 51, 51, 51, 51, 51, 1, 1, 1] [2021-11-02 22:12:59,456 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Forceful destruction successful, exit code 0 [2021-11-02 22:12:59,624 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2021-11-02 22:12:59,624 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:12:59,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:12:59,625 INFO L85 PathProgramCache]: Analyzing trace with hash 1857641269, now seen corresponding path program 51 times [2021-11-02 22:12:59,625 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:12:59,625 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073310801] [2021-11-02 22:12:59,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:12:59,626 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:12:59,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:13:02,894 INFO L134 CoverageAnalysis]: Checked inductivity of 7752 backedges. 0 proven. 7752 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:13:02,894 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:13:02,894 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073310801] [2021-11-02 22:13:02,895 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073310801] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:13:02,895 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [905830466] [2021-11-02 22:13:02,895 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-02 22:13:02,895 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:13:02,895 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:13:02,896 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:13:02,896 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2021-11-02 22:13:08,003 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 52 check-sat command(s) [2021-11-02 22:13:08,004 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:13:08,011 INFO L263 TraceCheckSpWp]: Trace formula consists of 751 conjuncts, 105 conjunts are in the unsatisfiable core [2021-11-02 22:13:08,014 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:13:15,254 INFO L134 CoverageAnalysis]: Checked inductivity of 7752 backedges. 0 proven. 7752 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:13:15,254 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [905830466] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:13:15,254 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:13:15,255 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [104, 104] total 207 [2021-11-02 22:13:15,255 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225928934] [2021-11-02 22:13:15,256 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 208 states [2021-11-02 22:13:15,256 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:13:15,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 208 interpolants. [2021-11-02 22:13:15,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9900, Invalid=33156, Unknown=0, NotChecked=0, Total=43056 [2021-11-02 22:13:15,264 INFO L87 Difference]: Start difference. First operand 311 states and 311 transitions. Second operand has 208 states, 207 states have (on average 2.9903381642512077) internal successors, (619), 208 states have internal predecessors, (619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:13:18,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:13:18,836 INFO L93 Difference]: Finished difference Result 319 states and 319 transitions. [2021-11-02 22:13:18,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2021-11-02 22:13:18,836 INFO L78 Accepts]: Start accepts. Automaton has has 208 states, 207 states have (on average 2.9903381642512077) internal successors, (619), 208 states have internal predecessors, (619), 0 states have call successors, (0), 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 310 [2021-11-02 22:13:18,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:13:18,838 INFO L225 Difference]: With dead ends: 319 [2021-11-02 22:13:18,838 INFO L226 Difference]: Without dead ends: 318 [2021-11-02 22:13:18,844 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 464 GetRequests, 207 SyntacticMatches, 0 SemanticMatches, 257 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26009 ImplicationChecksByTransitivity, 10.8s TimeCoverageRelationStatistics Valid=17958, Invalid=48864, Unknown=0, NotChecked=0, Total=66822 [2021-11-02 22:13:18,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2021-11-02 22:13:18,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 317. [2021-11-02 22:13:18,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 317 states, 316 states have (on average 1.0031645569620253) internal successors, (317), 316 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:13:18,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 317 transitions. [2021-11-02 22:13:18,850 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 317 transitions. Word has length 310 [2021-11-02 22:13:18,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:13:18,850 INFO L470 AbstractCegarLoop]: Abstraction has 317 states and 317 transitions. [2021-11-02 22:13:18,851 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 208 states, 207 states have (on average 2.9903381642512077) internal successors, (619), 208 states have internal predecessors, (619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:13:18,851 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 317 transitions. [2021-11-02 22:13:18,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2021-11-02 22:13:18,853 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:13:18,853 INFO L513 BasicCegarLoop]: trace histogram [53, 52, 52, 52, 52, 52, 1, 1, 1] [2021-11-02 22:13:18,895 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Forceful destruction successful, exit code 0 [2021-11-02 22:13:19,053 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2021-11-02 22:13:19,054 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:13:19,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:13:19,054 INFO L85 PathProgramCache]: Analyzing trace with hash -634723936, now seen corresponding path program 52 times [2021-11-02 22:13:19,054 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:13:19,054 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918485343] [2021-11-02 22:13:19,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:13:19,054 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:13:19,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:13:22,621 INFO L134 CoverageAnalysis]: Checked inductivity of 8060 backedges. 0 proven. 8060 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:13:22,621 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:13:22,621 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918485343] [2021-11-02 22:13:22,621 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918485343] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:13:22,621 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1092558002] [2021-11-02 22:13:22,621 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-02 22:13:22,621 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:13:22,621 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:13:22,622 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:13:22,623 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2021-11-02 22:13:27,448 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-02 22:13:27,448 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:13:27,452 INFO L263 TraceCheckSpWp]: Trace formula consists of 765 conjuncts, 107 conjunts are in the unsatisfiable core [2021-11-02 22:13:27,454 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:13:34,852 INFO L134 CoverageAnalysis]: Checked inductivity of 8060 backedges. 0 proven. 8060 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:13:34,853 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1092558002] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:13:34,853 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:13:34,853 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [106, 106] total 211 [2021-11-02 22:13:34,853 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384580737] [2021-11-02 22:13:34,854 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 212 states [2021-11-02 22:13:34,854 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:13:34,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 212 interpolants. [2021-11-02 22:13:34,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10276, Invalid=34456, Unknown=0, NotChecked=0, Total=44732 [2021-11-02 22:13:34,859 INFO L87 Difference]: Start difference. First operand 317 states and 317 transitions. Second operand has 212 states, 211 states have (on average 2.990521327014218) internal successors, (631), 212 states have internal predecessors, (631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:13:38,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:13:38,662 INFO L93 Difference]: Finished difference Result 325 states and 325 transitions. [2021-11-02 22:13:38,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2021-11-02 22:13:38,662 INFO L78 Accepts]: Start accepts. Automaton has has 212 states, 211 states have (on average 2.990521327014218) internal successors, (631), 212 states have internal predecessors, (631), 0 states have call successors, (0), 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 316 [2021-11-02 22:13:38,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:13:38,663 INFO L225 Difference]: With dead ends: 325 [2021-11-02 22:13:38,663 INFO L226 Difference]: Without dead ends: 324 [2021-11-02 22:13:38,666 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 473 GetRequests, 211 SyntacticMatches, 0 SemanticMatches, 262 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27039 ImplicationChecksByTransitivity, 11.3s TimeCoverageRelationStatistics Valid=18648, Invalid=50784, Unknown=0, NotChecked=0, Total=69432 [2021-11-02 22:13:38,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2021-11-02 22:13:38,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 323. [2021-11-02 22:13:38,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 322 states have (on average 1.0031055900621118) internal successors, (323), 322 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:13:38,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 323 transitions. [2021-11-02 22:13:38,674 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 323 transitions. Word has length 316 [2021-11-02 22:13:38,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:13:38,674 INFO L470 AbstractCegarLoop]: Abstraction has 323 states and 323 transitions. [2021-11-02 22:13:38,675 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 212 states, 211 states have (on average 2.990521327014218) internal successors, (631), 212 states have internal predecessors, (631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:13:38,675 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 323 transitions. [2021-11-02 22:13:38,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2021-11-02 22:13:38,677 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:13:38,677 INFO L513 BasicCegarLoop]: trace histogram [54, 53, 53, 53, 53, 53, 1, 1, 1] [2021-11-02 22:13:38,739 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Forceful destruction successful, exit code 0 [2021-11-02 22:13:38,896 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58,56 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:13:38,896 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:13:38,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:13:38,896 INFO L85 PathProgramCache]: Analyzing trace with hash -870667317, now seen corresponding path program 53 times [2021-11-02 22:13:38,896 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:13:38,896 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699076546] [2021-11-02 22:13:38,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:13:38,897 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:13:39,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:13:42,516 INFO L134 CoverageAnalysis]: Checked inductivity of 8374 backedges. 0 proven. 8374 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:13:42,516 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:13:42,516 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699076546] [2021-11-02 22:13:42,516 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699076546] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:13:42,516 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [84557611] [2021-11-02 22:13:42,517 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-02 22:13:42,517 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:13:42,517 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:13:42,517 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:13:42,518 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2021-11-02 22:13:47,900 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 54 check-sat command(s) [2021-11-02 22:13:47,901 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:13:47,906 INFO L263 TraceCheckSpWp]: Trace formula consists of 779 conjuncts, 109 conjunts are in the unsatisfiable core [2021-11-02 22:13:47,908 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:13:55,831 INFO L134 CoverageAnalysis]: Checked inductivity of 8374 backedges. 0 proven. 8374 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:13:55,831 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [84557611] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:13:55,831 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:13:55,831 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [108, 108] total 215 [2021-11-02 22:13:55,831 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066718918] [2021-11-02 22:13:55,832 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 216 states [2021-11-02 22:13:55,832 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:13:55,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 216 interpolants. [2021-11-02 22:13:55,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10659, Invalid=35781, Unknown=0, NotChecked=0, Total=46440 [2021-11-02 22:13:55,840 INFO L87 Difference]: Start difference. First operand 323 states and 323 transitions. Second operand has 216 states, 215 states have (on average 2.9906976744186045) internal successors, (643), 216 states have internal predecessors, (643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:13:59,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:13:59,773 INFO L93 Difference]: Finished difference Result 331 states and 331 transitions. [2021-11-02 22:13:59,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2021-11-02 22:13:59,773 INFO L78 Accepts]: Start accepts. Automaton has has 216 states, 215 states have (on average 2.9906976744186045) internal successors, (643), 216 states have internal predecessors, (643), 0 states have call successors, (0), 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 322 [2021-11-02 22:13:59,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:13:59,775 INFO L225 Difference]: With dead ends: 331 [2021-11-02 22:13:59,775 INFO L226 Difference]: Without dead ends: 330 [2021-11-02 22:13:59,779 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 482 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 267 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28089 ImplicationChecksByTransitivity, 11.7s TimeCoverageRelationStatistics Valid=19351, Invalid=52741, Unknown=0, NotChecked=0, Total=72092 [2021-11-02 22:13:59,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2021-11-02 22:13:59,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 329. [2021-11-02 22:13:59,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 329 states, 328 states have (on average 1.0030487804878048) internal successors, (329), 328 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:13:59,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 329 transitions. [2021-11-02 22:13:59,787 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 329 transitions. Word has length 322 [2021-11-02 22:13:59,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:13:59,787 INFO L470 AbstractCegarLoop]: Abstraction has 329 states and 329 transitions. [2021-11-02 22:13:59,788 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 216 states, 215 states have (on average 2.9906976744186045) internal successors, (643), 216 states have internal predecessors, (643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:13:59,788 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 329 transitions. [2021-11-02 22:13:59,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2021-11-02 22:13:59,790 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:13:59,790 INFO L513 BasicCegarLoop]: trace histogram [55, 54, 54, 54, 54, 54, 1, 1, 1] [2021-11-02 22:13:59,811 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Forceful destruction successful, exit code 0 [2021-11-02 22:13:59,994 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2021-11-02 22:13:59,994 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:13:59,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:13:59,995 INFO L85 PathProgramCache]: Analyzing trace with hash -600381002, now seen corresponding path program 54 times [2021-11-02 22:13:59,995 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:13:59,995 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054265699] [2021-11-02 22:13:59,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:13:59,995 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:14:00,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:14:03,639 INFO L134 CoverageAnalysis]: Checked inductivity of 8694 backedges. 0 proven. 8694 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:14:03,639 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:14:03,639 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054265699] [2021-11-02 22:14:03,639 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054265699] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:14:03,639 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1362098232] [2021-11-02 22:14:03,639 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-02 22:14:03,639 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:14:03,639 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:14:03,640 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:14:03,641 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2021-11-02 22:14:09,129 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 55 check-sat command(s) [2021-11-02 22:14:09,129 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:14:09,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 793 conjuncts, 111 conjunts are in the unsatisfiable core [2021-11-02 22:14:09,138 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:14:17,149 INFO L134 CoverageAnalysis]: Checked inductivity of 8694 backedges. 0 proven. 8694 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:14:17,149 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1362098232] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:14:17,149 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:14:17,150 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [110, 110] total 219 [2021-11-02 22:14:17,150 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299435610] [2021-11-02 22:14:17,150 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 220 states [2021-11-02 22:14:17,150 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:14:17,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 220 interpolants. [2021-11-02 22:14:17,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11049, Invalid=37131, Unknown=0, NotChecked=0, Total=48180 [2021-11-02 22:14:17,156 INFO L87 Difference]: Start difference. First operand 329 states and 329 transitions. Second operand has 220 states, 219 states have (on average 2.990867579908676) internal successors, (655), 220 states have internal predecessors, (655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:14:21,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:14:21,190 INFO L93 Difference]: Finished difference Result 337 states and 337 transitions. [2021-11-02 22:14:21,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2021-11-02 22:14:21,191 INFO L78 Accepts]: Start accepts. Automaton has has 220 states, 219 states have (on average 2.990867579908676) internal successors, (655), 220 states have internal predecessors, (655), 0 states have call successors, (0), 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 328 [2021-11-02 22:14:21,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:14:21,193 INFO L225 Difference]: With dead ends: 337 [2021-11-02 22:14:21,194 INFO L226 Difference]: Without dead ends: 336 [2021-11-02 22:14:21,201 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 491 GetRequests, 219 SyntacticMatches, 0 SemanticMatches, 272 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29159 ImplicationChecksByTransitivity, 12.0s TimeCoverageRelationStatistics Valid=20067, Invalid=54735, Unknown=0, NotChecked=0, Total=74802 [2021-11-02 22:14:21,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2021-11-02 22:14:21,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 335. [2021-11-02 22:14:21,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 334 states have (on average 1.0029940119760479) internal successors, (335), 334 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:14:21,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 335 transitions. [2021-11-02 22:14:21,207 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 335 transitions. Word has length 328 [2021-11-02 22:14:21,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:14:21,208 INFO L470 AbstractCegarLoop]: Abstraction has 335 states and 335 transitions. [2021-11-02 22:14:21,208 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 220 states, 219 states have (on average 2.990867579908676) internal successors, (655), 220 states have internal predecessors, (655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:14:21,208 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 335 transitions. [2021-11-02 22:14:21,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2021-11-02 22:14:21,210 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:14:21,211 INFO L513 BasicCegarLoop]: trace histogram [56, 55, 55, 55, 55, 55, 1, 1, 1] [2021-11-02 22:14:21,273 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Forceful destruction successful, exit code 0 [2021-11-02 22:14:21,424 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,58 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:14:21,424 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:14:21,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:14:21,425 INFO L85 PathProgramCache]: Analyzing trace with hash -758527135, now seen corresponding path program 55 times [2021-11-02 22:14:21,425 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:14:21,425 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194942496] [2021-11-02 22:14:21,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:14:21,425 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:14:21,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:14:25,231 INFO L134 CoverageAnalysis]: Checked inductivity of 9020 backedges. 0 proven. 9020 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:14:25,231 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:14:25,231 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194942496] [2021-11-02 22:14:25,232 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194942496] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:14:25,232 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1274015762] [2021-11-02 22:14:25,232 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-02 22:14:25,232 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:14:25,232 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:14:25,233 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:14:25,233 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2021-11-02 22:14:30,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:14:30,642 INFO L263 TraceCheckSpWp]: Trace formula consists of 807 conjuncts, 113 conjunts are in the unsatisfiable core [2021-11-02 22:14:30,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:14:38,881 INFO L134 CoverageAnalysis]: Checked inductivity of 9020 backedges. 0 proven. 9020 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:14:38,881 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1274015762] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:14:38,881 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:14:38,882 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [112, 112] total 223 [2021-11-02 22:14:38,882 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13287409] [2021-11-02 22:14:38,882 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 224 states [2021-11-02 22:14:38,883 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:14:38,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 224 interpolants. [2021-11-02 22:14:38,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11446, Invalid=38506, Unknown=0, NotChecked=0, Total=49952 [2021-11-02 22:14:38,890 INFO L87 Difference]: Start difference. First operand 335 states and 335 transitions. Second operand has 224 states, 223 states have (on average 2.991031390134529) internal successors, (667), 224 states have internal predecessors, (667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:14:43,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:14:43,059 INFO L93 Difference]: Finished difference Result 343 states and 343 transitions. [2021-11-02 22:14:43,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2021-11-02 22:14:43,059 INFO L78 Accepts]: Start accepts. Automaton has has 224 states, 223 states have (on average 2.991031390134529) internal successors, (667), 224 states have internal predecessors, (667), 0 states have call successors, (0), 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 334 [2021-11-02 22:14:43,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:14:43,061 INFO L225 Difference]: With dead ends: 343 [2021-11-02 22:14:43,061 INFO L226 Difference]: Without dead ends: 342 [2021-11-02 22:14:43,065 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 500 GetRequests, 223 SyntacticMatches, 0 SemanticMatches, 277 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30249 ImplicationChecksByTransitivity, 12.4s TimeCoverageRelationStatistics Valid=20796, Invalid=56766, Unknown=0, NotChecked=0, Total=77562 [2021-11-02 22:14:43,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2021-11-02 22:14:43,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 341. [2021-11-02 22:14:43,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 340 states have (on average 1.0029411764705882) internal successors, (341), 340 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:14:43,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 341 transitions. [2021-11-02 22:14:43,072 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 341 transitions. Word has length 334 [2021-11-02 22:14:43,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:14:43,073 INFO L470 AbstractCegarLoop]: Abstraction has 341 states and 341 transitions. [2021-11-02 22:14:43,073 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 224 states, 223 states have (on average 2.991031390134529) internal successors, (667), 224 states have internal predecessors, (667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:14:43,073 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 341 transitions. [2021-11-02 22:14:43,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2021-11-02 22:14:43,075 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:14:43,076 INFO L513 BasicCegarLoop]: trace histogram [57, 56, 56, 56, 56, 56, 1, 1, 1] [2021-11-02 22:14:43,117 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Forceful destruction successful, exit code 0 [2021-11-02 22:14:43,292 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable61 [2021-11-02 22:14:43,292 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:14:43,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:14:43,293 INFO L85 PathProgramCache]: Analyzing trace with hash -1011253044, now seen corresponding path program 56 times [2021-11-02 22:14:43,293 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:14:43,293 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919092316] [2021-11-02 22:14:43,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:14:43,293 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:14:43,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:14:47,156 INFO L134 CoverageAnalysis]: Checked inductivity of 9352 backedges. 0 proven. 9352 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:14:47,156 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:14:47,156 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919092316] [2021-11-02 22:14:47,156 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919092316] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:14:47,156 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1266282500] [2021-11-02 22:14:47,156 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-02 22:14:47,157 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:14:47,157 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:14:47,157 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:14:47,158 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2021-11-02 22:14:52,710 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-02 22:14:52,710 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:14:52,714 INFO L263 TraceCheckSpWp]: Trace formula consists of 821 conjuncts, 115 conjunts are in the unsatisfiable core [2021-11-02 22:14:52,716 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:15:01,062 INFO L134 CoverageAnalysis]: Checked inductivity of 9352 backedges. 0 proven. 9352 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:15:01,063 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1266282500] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:15:01,063 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:15:01,063 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [114, 114] total 227 [2021-11-02 22:15:01,063 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663549239] [2021-11-02 22:15:01,064 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 228 states [2021-11-02 22:15:01,064 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:15:01,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 228 interpolants. [2021-11-02 22:15:01,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11850, Invalid=39906, Unknown=0, NotChecked=0, Total=51756 [2021-11-02 22:15:01,069 INFO L87 Difference]: Start difference. First operand 341 states and 341 transitions. Second operand has 228 states, 227 states have (on average 2.9911894273127753) internal successors, (679), 228 states have internal predecessors, (679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:15:05,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:15:05,301 INFO L93 Difference]: Finished difference Result 349 states and 349 transitions. [2021-11-02 22:15:05,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2021-11-02 22:15:05,302 INFO L78 Accepts]: Start accepts. Automaton has has 228 states, 227 states have (on average 2.9911894273127753) internal successors, (679), 228 states have internal predecessors, (679), 0 states have call successors, (0), 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 340 [2021-11-02 22:15:05,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:15:05,303 INFO L225 Difference]: With dead ends: 349 [2021-11-02 22:15:05,303 INFO L226 Difference]: Without dead ends: 348 [2021-11-02 22:15:05,309 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 509 GetRequests, 227 SyntacticMatches, 0 SemanticMatches, 282 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31359 ImplicationChecksByTransitivity, 12.7s TimeCoverageRelationStatistics Valid=21538, Invalid=58834, Unknown=0, NotChecked=0, Total=80372 [2021-11-02 22:15:05,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2021-11-02 22:15:05,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 347. [2021-11-02 22:15:05,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 346 states have (on average 1.0028901734104045) internal successors, (347), 346 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) [2021-11-02 22:15:05,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 347 transitions. [2021-11-02 22:15:05,317 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 347 transitions. Word has length 340 [2021-11-02 22:15:05,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:15:05,317 INFO L470 AbstractCegarLoop]: Abstraction has 347 states and 347 transitions. [2021-11-02 22:15:05,318 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 228 states, 227 states have (on average 2.9911894273127753) internal successors, (679), 228 states have internal predecessors, (679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:15:05,318 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 347 transitions. [2021-11-02 22:15:05,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2021-11-02 22:15:05,320 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:15:05,320 INFO L513 BasicCegarLoop]: trace histogram [58, 57, 57, 57, 57, 57, 1, 1, 1] [2021-11-02 22:15:05,366 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Ended with exit code 0 [2021-11-02 22:15:05,536 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,60 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:15:05,536 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:15:05,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:15:05,537 INFO L85 PathProgramCache]: Analyzing trace with hash -376948233, now seen corresponding path program 57 times [2021-11-02 22:15:05,537 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:15:05,537 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029727222] [2021-11-02 22:15:05,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:15:05,537 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:15:05,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:15:09,522 INFO L134 CoverageAnalysis]: Checked inductivity of 9690 backedges. 0 proven. 9690 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:15:09,522 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:15:09,522 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029727222] [2021-11-02 22:15:09,522 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029727222] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:15:09,522 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [238639672] [2021-11-02 22:15:09,522 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-02 22:15:09,522 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:15:09,522 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:15:09,524 INFO L229 MonitoredProcess]: Starting monitored process 61 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:15:09,525 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2021-11-02 22:15:15,681 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 58 check-sat command(s) [2021-11-02 22:15:15,682 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:15:15,691 INFO L263 TraceCheckSpWp]: Trace formula consists of 835 conjuncts, 117 conjunts are in the unsatisfiable core [2021-11-02 22:15:15,693 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:15:24,285 INFO L134 CoverageAnalysis]: Checked inductivity of 9690 backedges. 0 proven. 9690 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:15:24,285 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [238639672] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:15:24,285 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:15:24,286 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [116, 116] total 231 [2021-11-02 22:15:24,286 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199979620] [2021-11-02 22:15:24,286 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 232 states [2021-11-02 22:15:24,286 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:15:24,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 232 interpolants. [2021-11-02 22:15:24,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12261, Invalid=41331, Unknown=0, NotChecked=0, Total=53592 [2021-11-02 22:15:24,294 INFO L87 Difference]: Start difference. First operand 347 states and 347 transitions. Second operand has 232 states, 231 states have (on average 2.9913419913419914) internal successors, (691), 232 states have internal predecessors, (691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:15:28,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:15:28,631 INFO L93 Difference]: Finished difference Result 355 states and 355 transitions. [2021-11-02 22:15:28,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2021-11-02 22:15:28,632 INFO L78 Accepts]: Start accepts. Automaton has has 232 states, 231 states have (on average 2.9913419913419914) internal successors, (691), 232 states have internal predecessors, (691), 0 states have call successors, (0), 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 346 [2021-11-02 22:15:28,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:15:28,634 INFO L225 Difference]: With dead ends: 355 [2021-11-02 22:15:28,634 INFO L226 Difference]: Without dead ends: 354 [2021-11-02 22:15:28,641 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 518 GetRequests, 231 SyntacticMatches, 0 SemanticMatches, 287 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32489 ImplicationChecksByTransitivity, 13.1s TimeCoverageRelationStatistics Valid=22293, Invalid=60939, Unknown=0, NotChecked=0, Total=83232 [2021-11-02 22:15:28,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2021-11-02 22:15:28,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 353. [2021-11-02 22:15:28,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 353 states, 352 states have (on average 1.0028409090909092) internal successors, (353), 352 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:15:28,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 353 transitions. [2021-11-02 22:15:28,650 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 353 transitions. Word has length 346 [2021-11-02 22:15:28,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:15:28,650 INFO L470 AbstractCegarLoop]: Abstraction has 353 states and 353 transitions. [2021-11-02 22:15:28,650 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 232 states, 231 states have (on average 2.9913419913419914) internal successors, (691), 232 states have internal predecessors, (691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:15:28,651 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 353 transitions. [2021-11-02 22:15:28,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2021-11-02 22:15:28,653 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:15:28,653 INFO L513 BasicCegarLoop]: trace histogram [59, 58, 58, 58, 58, 58, 1, 1, 1] [2021-11-02 22:15:28,698 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Forceful destruction successful, exit code 0 [2021-11-02 22:15:28,866 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable63 [2021-11-02 22:15:28,866 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:15:28,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:15:28,866 INFO L85 PathProgramCache]: Analyzing trace with hash 1079256802, now seen corresponding path program 58 times [2021-11-02 22:15:28,866 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:15:28,867 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932841623] [2021-11-02 22:15:28,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:15:28,867 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:15:28,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:15:32,960 INFO L134 CoverageAnalysis]: Checked inductivity of 10034 backedges. 0 proven. 10034 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:15:32,960 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:15:32,960 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932841623] [2021-11-02 22:15:32,961 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932841623] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:15:32,961 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1566279932] [2021-11-02 22:15:32,961 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-02 22:15:32,961 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:15:32,961 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:15:32,961 INFO L229 MonitoredProcess]: Starting monitored process 62 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:15:32,962 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2021-11-02 22:15:39,110 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-02 22:15:39,110 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:15:39,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 849 conjuncts, 119 conjunts are in the unsatisfiable core [2021-11-02 22:15:39,117 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:15:48,184 INFO L134 CoverageAnalysis]: Checked inductivity of 10034 backedges. 0 proven. 10034 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:15:48,184 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1566279932] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:15:48,184 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:15:48,185 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [118, 118] total 235 [2021-11-02 22:15:48,185 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137714838] [2021-11-02 22:15:48,185 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 236 states [2021-11-02 22:15:48,185 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:15:48,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 236 interpolants. [2021-11-02 22:15:48,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12679, Invalid=42781, Unknown=0, NotChecked=0, Total=55460 [2021-11-02 22:15:48,192 INFO L87 Difference]: Start difference. First operand 353 states and 353 transitions. Second operand has 236 states, 235 states have (on average 2.991489361702128) internal successors, (703), 236 states have internal predecessors, (703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:15:53,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:15:53,338 INFO L93 Difference]: Finished difference Result 361 states and 361 transitions. [2021-11-02 22:15:53,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2021-11-02 22:15:53,338 INFO L78 Accepts]: Start accepts. Automaton has has 236 states, 235 states have (on average 2.991489361702128) internal successors, (703), 236 states have internal predecessors, (703), 0 states have call successors, (0), 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 352 [2021-11-02 22:15:53,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:15:53,340 INFO L225 Difference]: With dead ends: 361 [2021-11-02 22:15:53,341 INFO L226 Difference]: Without dead ends: 360 [2021-11-02 22:15:53,345 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 527 GetRequests, 235 SyntacticMatches, 0 SemanticMatches, 292 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33639 ImplicationChecksByTransitivity, 13.9s TimeCoverageRelationStatistics Valid=23061, Invalid=63081, Unknown=0, NotChecked=0, Total=86142 [2021-11-02 22:15:53,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2021-11-02 22:15:53,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 359. [2021-11-02 22:15:53,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359 states, 358 states have (on average 1.0027932960893855) internal successors, (359), 358 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:15:53,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 359 transitions. [2021-11-02 22:15:53,353 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 359 transitions. Word has length 352 [2021-11-02 22:15:53,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:15:53,354 INFO L470 AbstractCegarLoop]: Abstraction has 359 states and 359 transitions. [2021-11-02 22:15:53,354 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 236 states, 235 states have (on average 2.991489361702128) internal successors, (703), 236 states have internal predecessors, (703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:15:53,354 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 359 transitions. [2021-11-02 22:15:53,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2021-11-02 22:15:53,356 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:15:53,357 INFO L513 BasicCegarLoop]: trace histogram [60, 59, 59, 59, 59, 59, 1, 1, 1] [2021-11-02 22:15:53,399 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Forceful destruction successful, exit code 0 [2021-11-02 22:15:53,560 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,62 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:15:53,560 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:15:53,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:15:53,561 INFO L85 PathProgramCache]: Analyzing trace with hash -522750067, now seen corresponding path program 59 times [2021-11-02 22:15:53,561 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:15:53,561 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867346905] [2021-11-02 22:15:53,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:15:53,561 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:15:53,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:15:57,847 INFO L134 CoverageAnalysis]: Checked inductivity of 10384 backedges. 0 proven. 10384 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:15:57,847 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:15:57,847 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867346905] [2021-11-02 22:15:57,847 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867346905] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:15:57,847 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1915942723] [2021-11-02 22:15:57,847 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-02 22:15:57,847 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:15:57,848 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:15:57,850 INFO L229 MonitoredProcess]: Starting monitored process 63 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:15:57,851 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2021-11-02 22:16:04,392 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 60 check-sat command(s) [2021-11-02 22:16:04,393 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:16:04,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 863 conjuncts, 121 conjunts are in the unsatisfiable core [2021-11-02 22:16:04,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:16:13,821 INFO L134 CoverageAnalysis]: Checked inductivity of 10384 backedges. 0 proven. 10384 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:16:13,821 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1915942723] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:16:13,821 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:16:13,822 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [120, 120] total 239 [2021-11-02 22:16:13,822 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977697030] [2021-11-02 22:16:13,822 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 240 states [2021-11-02 22:16:13,823 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:16:13,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 240 interpolants. [2021-11-02 22:16:13,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13104, Invalid=44256, Unknown=0, NotChecked=0, Total=57360 [2021-11-02 22:16:13,828 INFO L87 Difference]: Start difference. First operand 359 states and 359 transitions. Second operand has 240 states, 239 states have (on average 2.99163179916318) internal successors, (715), 240 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:16:18,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:16:18,727 INFO L93 Difference]: Finished difference Result 367 states and 367 transitions. [2021-11-02 22:16:18,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 121 states. [2021-11-02 22:16:18,728 INFO L78 Accepts]: Start accepts. Automaton has has 240 states, 239 states have (on average 2.99163179916318) internal successors, (715), 240 states have internal predecessors, (715), 0 states have call successors, (0), 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 358 [2021-11-02 22:16:18,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:16:18,729 INFO L225 Difference]: With dead ends: 367 [2021-11-02 22:16:18,729 INFO L226 Difference]: Without dead ends: 366 [2021-11-02 22:16:18,736 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 536 GetRequests, 239 SyntacticMatches, 0 SemanticMatches, 297 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34809 ImplicationChecksByTransitivity, 14.5s TimeCoverageRelationStatistics Valid=23842, Invalid=65260, Unknown=0, NotChecked=0, Total=89102 [2021-11-02 22:16:18,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2021-11-02 22:16:18,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 365. [2021-11-02 22:16:18,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 365 states, 364 states have (on average 1.0027472527472527) internal successors, (365), 364 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:16:18,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 365 transitions. [2021-11-02 22:16:18,742 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 365 transitions. Word has length 358 [2021-11-02 22:16:18,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:16:18,742 INFO L470 AbstractCegarLoop]: Abstraction has 365 states and 365 transitions. [2021-11-02 22:16:18,743 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 240 states, 239 states have (on average 2.99163179916318) internal successors, (715), 240 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:16:18,743 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 365 transitions. [2021-11-02 22:16:18,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2021-11-02 22:16:18,744 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:16:18,745 INFO L513 BasicCegarLoop]: trace histogram [61, 60, 60, 60, 60, 60, 1, 1, 1] [2021-11-02 22:16:18,788 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Forceful destruction successful, exit code 0 [2021-11-02 22:16:18,945 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65,63 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:16:18,945 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:16:18,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:16:18,945 INFO L85 PathProgramCache]: Analyzing trace with hash 459824120, now seen corresponding path program 60 times [2021-11-02 22:16:18,946 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:16:18,946 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112891544] [2021-11-02 22:16:18,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:16:18,946 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:16:19,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:16:23,527 INFO L134 CoverageAnalysis]: Checked inductivity of 10740 backedges. 0 proven. 10740 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:16:23,528 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:16:23,528 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112891544] [2021-11-02 22:16:23,528 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112891544] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:16:23,528 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [356069517] [2021-11-02 22:16:23,528 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-02 22:16:23,528 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:16:23,528 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:16:23,529 INFO L229 MonitoredProcess]: Starting monitored process 64 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:16:23,530 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2021-11-02 22:16:30,239 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 61 check-sat command(s) [2021-11-02 22:16:30,239 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:16:30,248 INFO L263 TraceCheckSpWp]: Trace formula consists of 877 conjuncts, 123 conjunts are in the unsatisfiable core [2021-11-02 22:16:30,251 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:16:40,204 INFO L134 CoverageAnalysis]: Checked inductivity of 10740 backedges. 0 proven. 10740 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:16:40,204 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [356069517] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:16:40,205 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:16:40,205 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [122, 122] total 243 [2021-11-02 22:16:40,205 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083431892] [2021-11-02 22:16:40,206 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 244 states [2021-11-02 22:16:40,206 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:16:40,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 244 interpolants. [2021-11-02 22:16:40,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13536, Invalid=45756, Unknown=0, NotChecked=0, Total=59292 [2021-11-02 22:16:40,211 INFO L87 Difference]: Start difference. First operand 365 states and 365 transitions. Second operand has 244 states, 243 states have (on average 2.9917695473251027) internal successors, (727), 244 states have internal predecessors, (727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:16:45,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:16:45,667 INFO L93 Difference]: Finished difference Result 373 states and 373 transitions. [2021-11-02 22:16:45,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2021-11-02 22:16:45,668 INFO L78 Accepts]: Start accepts. Automaton has has 244 states, 243 states have (on average 2.9917695473251027) internal successors, (727), 244 states have internal predecessors, (727), 0 states have call successors, (0), 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 364 [2021-11-02 22:16:45,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:16:45,669 INFO L225 Difference]: With dead ends: 373 [2021-11-02 22:16:45,670 INFO L226 Difference]: Without dead ends: 372 [2021-11-02 22:16:45,676 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 545 GetRequests, 243 SyntacticMatches, 0 SemanticMatches, 302 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35999 ImplicationChecksByTransitivity, 15.3s TimeCoverageRelationStatistics Valid=24636, Invalid=67476, Unknown=0, NotChecked=0, Total=92112 [2021-11-02 22:16:45,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2021-11-02 22:16:45,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 371. [2021-11-02 22:16:45,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 370 states have (on average 1.0027027027027027) internal successors, (371), 370 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) [2021-11-02 22:16:45,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 371 transitions. [2021-11-02 22:16:45,683 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 371 transitions. Word has length 364 [2021-11-02 22:16:45,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:16:45,683 INFO L470 AbstractCegarLoop]: Abstraction has 371 states and 371 transitions. [2021-11-02 22:16:45,683 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 244 states, 243 states have (on average 2.9917695473251027) internal successors, (727), 244 states have internal predecessors, (727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:16:45,684 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 371 transitions. [2021-11-02 22:16:45,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 371 [2021-11-02 22:16:45,686 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:16:45,686 INFO L513 BasicCegarLoop]: trace histogram [62, 61, 61, 61, 61, 61, 1, 1, 1] [2021-11-02 22:16:45,766 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Forceful destruction successful, exit code 0 [2021-11-02 22:16:45,908 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66,64 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:16:45,908 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:16:45,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:16:45,909 INFO L85 PathProgramCache]: Analyzing trace with hash 1392051235, now seen corresponding path program 61 times [2021-11-02 22:16:45,909 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:16:45,909 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265544574] [2021-11-02 22:16:45,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:16:45,909 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:16:46,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:16:50,875 INFO L134 CoverageAnalysis]: Checked inductivity of 11102 backedges. 0 proven. 11102 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:16:50,876 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:16:50,876 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265544574] [2021-11-02 22:16:50,876 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265544574] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:16:50,876 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1932219624] [2021-11-02 22:16:50,876 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-02 22:16:50,876 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:16:50,876 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:16:50,877 INFO L229 MonitoredProcess]: Starting monitored process 65 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:16:50,878 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2021-11-02 22:16:57,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:16:57,990 INFO L263 TraceCheckSpWp]: Trace formula consists of 891 conjuncts, 125 conjunts are in the unsatisfiable core [2021-11-02 22:16:57,993 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:17:09,156 INFO L134 CoverageAnalysis]: Checked inductivity of 11102 backedges. 0 proven. 11102 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:17:09,156 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1932219624] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:17:09,157 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:17:09,157 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [124, 124] total 247 [2021-11-02 22:17:09,157 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343263747] [2021-11-02 22:17:09,158 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 248 states [2021-11-02 22:17:09,158 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:17:09,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 248 interpolants. [2021-11-02 22:17:09,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13975, Invalid=47281, Unknown=0, NotChecked=0, Total=61256 [2021-11-02 22:17:09,164 INFO L87 Difference]: Start difference. First operand 371 states and 371 transitions. Second operand has 248 states, 247 states have (on average 2.9919028340080973) internal successors, (739), 248 states have internal predecessors, (739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:17:15,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:17:15,146 INFO L93 Difference]: Finished difference Result 379 states and 379 transitions. [2021-11-02 22:17:15,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2021-11-02 22:17:15,146 INFO L78 Accepts]: Start accepts. Automaton has has 248 states, 247 states have (on average 2.9919028340080973) internal successors, (739), 248 states have internal predecessors, (739), 0 states have call successors, (0), 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 370 [2021-11-02 22:17:15,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:17:15,148 INFO L225 Difference]: With dead ends: 379 [2021-11-02 22:17:15,148 INFO L226 Difference]: Without dead ends: 378 [2021-11-02 22:17:15,152 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 554 GetRequests, 247 SyntacticMatches, 0 SemanticMatches, 307 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37209 ImplicationChecksByTransitivity, 16.9s TimeCoverageRelationStatistics Valid=25443, Invalid=69729, Unknown=0, NotChecked=0, Total=95172 [2021-11-02 22:17:15,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2021-11-02 22:17:15,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 377. [2021-11-02 22:17:15,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 376 states have (on average 1.002659574468085) internal successors, (377), 376 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:17:15,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 377 transitions. [2021-11-02 22:17:15,160 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 377 transitions. Word has length 370 [2021-11-02 22:17:15,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:17:15,160 INFO L470 AbstractCegarLoop]: Abstraction has 377 states and 377 transitions. [2021-11-02 22:17:15,160 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 248 states, 247 states have (on average 2.9919028340080973) internal successors, (739), 248 states have internal predecessors, (739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:17:15,160 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 377 transitions. [2021-11-02 22:17:15,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 377 [2021-11-02 22:17:15,162 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:17:15,162 INFO L513 BasicCegarLoop]: trace histogram [63, 62, 62, 62, 62, 62, 1, 1, 1] [2021-11-02 22:17:15,213 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Forceful destruction successful, exit code 0 [2021-11-02 22:17:15,363 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67,65 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:17:15,363 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:17:15,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:17:15,364 INFO L85 PathProgramCache]: Analyzing trace with hash -1743282162, now seen corresponding path program 62 times [2021-11-02 22:17:15,364 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:17:15,364 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78749040] [2021-11-02 22:17:15,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:17:15,365 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:17:15,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:17:20,735 INFO L134 CoverageAnalysis]: Checked inductivity of 11470 backedges. 0 proven. 11470 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:17:20,735 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:17:20,735 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78749040] [2021-11-02 22:17:20,735 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78749040] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:17:20,735 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1943577601] [2021-11-02 22:17:20,735 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-02 22:17:20,735 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:17:20,735 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:17:20,736 INFO L229 MonitoredProcess]: Starting monitored process 66 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:17:20,737 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5d7ed3-1163-4c52-b28a-6163fac931f5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2021-11-02 22:17:27,936 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-02 22:17:27,936 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:17:27,942 INFO L263 TraceCheckSpWp]: Trace formula consists of 905 conjuncts, 127 conjunts are in the unsatisfiable core [2021-11-02 22:17:27,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:17:38,129 INFO L134 CoverageAnalysis]: Checked inductivity of 11470 backedges. 0 proven. 11470 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:17:38,129 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1943577601] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:17:38,130 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:17:38,130 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [126, 126] total 251 [2021-11-02 22:17:38,130 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028950212] [2021-11-02 22:17:38,131 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 252 states [2021-11-02 22:17:38,131 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:17:38,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 252 interpolants. [2021-11-02 22:17:38,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14421, Invalid=48831, Unknown=0, NotChecked=0, Total=63252 [2021-11-02 22:17:38,138 INFO L87 Difference]: Start difference. First operand 377 states and 377 transitions. Second operand has 252 states, 251 states have (on average 2.99203187250996) internal successors, (751), 252 states have internal predecessors, (751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)