./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/bitvector/gcd_4.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version ff03de63 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/bitvector/gcd_4.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 679f2fe8d678884423b2dff47bf2c3c7ede0374b3a8bb68f9a9e8a332d8776ef --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ff03de6 [2021-12-21 20:49:30,755 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 20:49:30,778 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 20:49:30,795 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 20:49:30,795 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 20:49:30,796 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 20:49:30,797 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 20:49:30,798 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 20:49:30,799 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 20:49:30,799 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 20:49:30,800 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 20:49:30,801 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 20:49:30,801 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 20:49:30,802 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 20:49:30,802 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 20:49:30,803 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 20:49:30,804 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 20:49:30,804 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 20:49:30,806 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 20:49:30,807 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 20:49:30,808 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 20:49:30,809 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 20:49:30,810 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 20:49:30,810 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 20:49:30,812 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 20:49:30,813 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 20:49:30,813 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 20:49:30,813 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 20:49:30,814 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 20:49:30,814 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 20:49:30,815 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 20:49:30,815 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 20:49:30,816 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 20:49:30,816 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 20:49:30,817 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 20:49:30,817 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 20:49:30,818 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 20:49:30,818 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 20:49:30,818 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 20:49:30,819 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 20:49:30,819 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 20:49:30,820 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2021-12-21 20:49:30,832 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 20:49:30,833 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 20:49:30,833 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 20:49:30,833 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 20:49:30,833 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-21 20:49:30,834 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-21 20:49:30,834 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 20:49:30,834 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 20:49:30,834 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 20:49:30,834 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 20:49:30,835 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-21 20:49:30,835 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-21 20:49:30,835 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-21 20:49:30,835 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-21 20:49:30,835 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 20:49:30,835 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-21 20:49:30,836 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-21 20:49:30,836 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-21 20:49:30,836 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-12-21 20:49:30,836 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-21 20:49:30,836 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-21 20:49:30,836 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 20:49:30,836 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-21 20:49:30,837 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 20:49:30,837 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 20:49:30,837 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-21 20:49:30,837 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 20:49:30,837 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 20:49:30,837 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-21 20:49:30,838 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-21 20:49:30,838 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-21 20:49:30,838 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-21 20:49:30,838 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-21 20:49:30,838 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 20:49:30,838 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 679f2fe8d678884423b2dff47bf2c3c7ede0374b3a8bb68f9a9e8a332d8776ef [2021-12-21 20:49:31,000 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 20:49:31,013 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 20:49:31,015 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 20:49:31,015 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 20:49:31,016 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 20:49:31,016 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/bitvector/gcd_4.c [2021-12-21 20:49:31,092 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0517d3e82/61d05f239e824a48a8d54b88f0d0faf2/FLAGb4d103272 [2021-12-21 20:49:31,519 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 20:49:31,519 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector/gcd_4.c [2021-12-21 20:49:31,523 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0517d3e82/61d05f239e824a48a8d54b88f0d0faf2/FLAGb4d103272 [2021-12-21 20:49:31,958 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0517d3e82/61d05f239e824a48a8d54b88f0d0faf2 [2021-12-21 20:49:31,960 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 20:49:31,961 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 20:49:31,967 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 20:49:31,968 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 20:49:31,970 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 20:49:31,971 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 08:49:31" (1/1) ... [2021-12-21 20:49:31,972 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e3af698 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:49:31, skipping insertion in model container [2021-12-21 20:49:31,972 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 08:49:31" (1/1) ... [2021-12-21 20:49:31,977 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 20:49:31,990 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 20:49:32,090 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector/gcd_4.c[662,675] [2021-12-21 20:49:32,101 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 20:49:32,107 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 20:49:32,119 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector/gcd_4.c[662,675] [2021-12-21 20:49:32,130 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 20:49:32,138 INFO L208 MainTranslator]: Completed translation [2021-12-21 20:49:32,138 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:49:32 WrapperNode [2021-12-21 20:49:32,139 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 20:49:32,140 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 20:49:32,140 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 20:49:32,140 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 20:49:32,145 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:49:32" (1/1) ... [2021-12-21 20:49:32,151 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:49:32" (1/1) ... [2021-12-21 20:49:32,170 INFO L137 Inliner]: procedures = 14, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 50 [2021-12-21 20:49:32,170 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 20:49:32,171 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 20:49:32,171 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 20:49:32,171 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 20:49:32,176 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:49:32" (1/1) ... [2021-12-21 20:49:32,177 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:49:32" (1/1) ... [2021-12-21 20:49:32,183 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:49:32" (1/1) ... [2021-12-21 20:49:32,183 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:49:32" (1/1) ... [2021-12-21 20:49:32,190 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:49:32" (1/1) ... [2021-12-21 20:49:32,193 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:49:32" (1/1) ... [2021-12-21 20:49:32,197 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:49:32" (1/1) ... [2021-12-21 20:49:32,198 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 20:49:32,200 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 20:49:32,200 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 20:49:32,200 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 20:49:32,201 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:49:32" (1/1) ... [2021-12-21 20:49:32,206 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 20:49:32,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 20:49:32,223 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-21 20:49:32,247 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-21 20:49:32,259 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-21 20:49:32,259 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-21 20:49:32,259 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 20:49:32,259 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 20:49:32,260 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-21 20:49:32,260 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-21 20:49:32,297 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 20:49:32,298 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 20:49:32,440 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 20:49:32,459 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 20:49:32,460 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-21 20:49:32,461 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 08:49:32 BoogieIcfgContainer [2021-12-21 20:49:32,461 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 20:49:32,462 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-21 20:49:32,462 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-21 20:49:32,465 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-21 20:49:32,465 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 08:49:31" (1/3) ... [2021-12-21 20:49:32,465 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62e700a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 08:49:32, skipping insertion in model container [2021-12-21 20:49:32,466 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:49:32" (2/3) ... [2021-12-21 20:49:32,466 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62e700a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 08:49:32, skipping insertion in model container [2021-12-21 20:49:32,466 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 08:49:32" (3/3) ... [2021-12-21 20:49:32,467 INFO L111 eAbstractionObserver]: Analyzing ICFG gcd_4.c [2021-12-21 20:49:32,470 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-21 20:49:32,470 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2021-12-21 20:49:32,504 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-21 20:49:32,508 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 [2021-12-21 20:49:32,509 INFO L340 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2021-12-21 20:49:32,519 INFO L276 IsEmpty]: Start isEmpty. Operand has 37 states, 24 states have (on average 1.625) internal successors, (39), 32 states have internal predecessors, (39), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-21 20:49:32,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-12-21 20:49:32,521 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 20:49:32,522 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-12-21 20:49:32,522 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-12-21 20:49:32,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 20:49:32,525 INFO L85 PathProgramCache]: Analyzing trace with hash 925604, now seen corresponding path program 1 times [2021-12-21 20:49:32,546 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 20:49:32,546 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383498386] [2021-12-21 20:49:32,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:49:32,548 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 20:49:32,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:32,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 20:49:32,648 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 20:49:32,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383498386] [2021-12-21 20:49:32,648 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383498386] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 20:49:32,649 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 20:49:32,649 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-21 20:49:32,650 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227977419] [2021-12-21 20:49:32,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 20:49:32,653 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 20:49:32,653 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 20:49:32,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 20:49:32,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 20:49:32,678 INFO L87 Difference]: Start difference. First operand has 37 states, 24 states have (on average 1.625) internal successors, (39), 32 states have internal predecessors, (39), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 1.3333333333333333) 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) [2021-12-21 20:49:32,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 20:49:32,756 INFO L93 Difference]: Finished difference Result 86 states and 112 transitions. [2021-12-21 20:49:32,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 20:49:32,759 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.3333333333333333) 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 [2021-12-21 20:49:32,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 20:49:32,765 INFO L225 Difference]: With dead ends: 86 [2021-12-21 20:49:32,766 INFO L226 Difference]: Without dead ends: 29 [2021-12-21 20:49:32,768 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 20:49:32,770 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 24 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 20:49:32,771 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 44 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 20:49:32,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-12-21 20:49:32,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 19. [2021-12-21 20:49:32,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 18 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 20:49:32,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2021-12-21 20:49:32,797 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 4 [2021-12-21 20:49:32,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 20:49:32,798 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2021-12-21 20:49:32,798 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.3333333333333333) 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) [2021-12-21 20:49:32,798 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2021-12-21 20:49:32,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-12-21 20:49:32,798 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 20:49:32,798 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-12-21 20:49:32,799 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-21 20:49:32,799 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-12-21 20:49:32,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 20:49:32,800 INFO L85 PathProgramCache]: Analyzing trace with hash 28699785, now seen corresponding path program 1 times [2021-12-21 20:49:32,800 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 20:49:32,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549892635] [2021-12-21 20:49:32,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:49:32,801 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 20:49:32,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:32,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 20:49:32,831 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 20:49:32,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549892635] [2021-12-21 20:49:32,831 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549892635] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 20:49:32,831 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 20:49:32,831 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-21 20:49:32,832 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441572302] [2021-12-21 20:49:32,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 20:49:32,833 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 20:49:32,833 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 20:49:32,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 20:49:32,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 20:49:32,834 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand has 3 states, 3 states have (on average 1.6666666666666667) 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) [2021-12-21 20:49:32,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 20:49:32,869 INFO L93 Difference]: Finished difference Result 40 states and 44 transitions. [2021-12-21 20:49:32,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 20:49:32,870 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.6666666666666667) 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 [2021-12-21 20:49:32,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 20:49:32,870 INFO L225 Difference]: With dead ends: 40 [2021-12-21 20:49:32,870 INFO L226 Difference]: Without dead ends: 25 [2021-12-21 20:49:32,871 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 20:49:32,872 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 12 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 20:49:32,872 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 5 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 20:49:32,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-12-21 20:49:32,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 15. [2021-12-21 20:49:32,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 14 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) [2021-12-21 20:49:32,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2021-12-21 20:49:32,875 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 5 [2021-12-21 20:49:32,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 20:49:32,875 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2021-12-21 20:49:32,875 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.6666666666666667) 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) [2021-12-21 20:49:32,875 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2021-12-21 20:49:32,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-12-21 20:49:32,876 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 20:49:32,876 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 20:49:32,876 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-21 20:49:32,876 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-12-21 20:49:32,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 20:49:32,877 INFO L85 PathProgramCache]: Analyzing trace with hash 302707703, now seen corresponding path program 1 times [2021-12-21 20:49:32,877 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 20:49:32,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656694225] [2021-12-21 20:49:32,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:49:32,878 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 20:49:32,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:32,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 20:49:32,908 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 20:49:32,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656694225] [2021-12-21 20:49:32,909 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656694225] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 20:49:32,909 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 20:49:32,909 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-21 20:49:32,909 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514062381] [2021-12-21 20:49:32,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 20:49:32,910 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 20:49:32,910 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 20:49:32,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 20:49:32,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 20:49:32,911 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 20:49:32,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 20:49:32,933 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2021-12-21 20:49:32,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 20:49:32,934 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-12-21 20:49:32,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 20:49:32,934 INFO L225 Difference]: With dead ends: 25 [2021-12-21 20:49:32,935 INFO L226 Difference]: Without dead ends: 23 [2021-12-21 20:49:32,935 INFO L932 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 [2021-12-21 20:49:32,936 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 5 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 20:49:32,936 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 5 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 20:49:32,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-12-21 20:49:32,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 21. [2021-12-21 20:49:32,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 17 states have (on average 1.4705882352941178) internal successors, (25), 20 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 20:49:32,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2021-12-21 20:49:32,939 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 8 [2021-12-21 20:49:32,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 20:49:32,940 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2021-12-21 20:49:32,940 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 20:49:32,940 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2021-12-21 20:49:32,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-12-21 20:49:32,940 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 20:49:32,941 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 20:49:32,941 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-21 20:49:32,941 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-12-21 20:49:32,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 20:49:32,942 INFO L85 PathProgramCache]: Analyzing trace with hash 302707895, now seen corresponding path program 1 times [2021-12-21 20:49:32,942 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 20:49:32,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079240814] [2021-12-21 20:49:32,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:49:32,943 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 20:49:32,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:32,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 20:49:32,991 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 20:49:32,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079240814] [2021-12-21 20:49:32,992 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079240814] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 20:49:32,992 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 20:49:32,992 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-21 20:49:32,992 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598162412] [2021-12-21 20:49:32,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 20:49:32,992 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-21 20:49:32,992 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 20:49:32,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-21 20:49:32,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-21 20:49:32,993 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 20:49:33,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 20:49:33,021 INFO L93 Difference]: Finished difference Result 28 states and 31 transitions. [2021-12-21 20:49:33,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-21 20:49:33,021 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-12-21 20:49:33,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 20:49:33,023 INFO L225 Difference]: With dead ends: 28 [2021-12-21 20:49:33,023 INFO L226 Difference]: Without dead ends: 26 [2021-12-21 20:49:33,023 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-21 20:49:33,024 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 16 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 20:49:33,024 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 6 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 20:49:33,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-12-21 20:49:33,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2021-12-21 20:49:33,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 20 states have (on average 1.4) internal successors, (28), 23 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 20:49:33,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2021-12-21 20:49:33,027 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 8 [2021-12-21 20:49:33,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 20:49:33,028 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2021-12-21 20:49:33,028 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 20:49:33,028 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2021-12-21 20:49:33,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-12-21 20:49:33,028 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 20:49:33,028 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 20:49:33,028 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-21 20:49:33,028 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-12-21 20:49:33,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 20:49:33,029 INFO L85 PathProgramCache]: Analyzing trace with hash 1796493490, now seen corresponding path program 1 times [2021-12-21 20:49:33,029 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 20:49:33,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305170569] [2021-12-21 20:49:33,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:49:33,029 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 20:49:33,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:33,067 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 20:49:33,067 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 20:49:33,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305170569] [2021-12-21 20:49:33,067 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305170569] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 20:49:33,067 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 20:49:33,067 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-21 20:49:33,068 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117065413] [2021-12-21 20:49:33,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 20:49:33,068 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 20:49:33,068 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 20:49:33,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 20:49:33,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-12-21 20:49:33,069 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 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) [2021-12-21 20:49:33,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 20:49:33,094 INFO L93 Difference]: Finished difference Result 35 states and 40 transitions. [2021-12-21 20:49:33,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-21 20:49:33,095 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 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 [2021-12-21 20:49:33,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 20:49:33,095 INFO L225 Difference]: With dead ends: 35 [2021-12-21 20:49:33,095 INFO L226 Difference]: Without dead ends: 23 [2021-12-21 20:49:33,096 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-12-21 20:49:33,096 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 12 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 20:49:33,097 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 8 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 20:49:33,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-12-21 20:49:33,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2021-12-21 20:49:33,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 19 states have (on average 1.3157894736842106) internal successors, (25), 22 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 20:49:33,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2021-12-21 20:49:33,099 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 12 [2021-12-21 20:49:33,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 20:49:33,100 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2021-12-21 20:49:33,100 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 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) [2021-12-21 20:49:33,100 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2021-12-21 20:49:33,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-12-21 20:49:33,100 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 20:49:33,100 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 20:49:33,100 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-21 20:49:33,100 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-12-21 20:49:33,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 20:49:33,101 INFO L85 PathProgramCache]: Analyzing trace with hash 844992871, now seen corresponding path program 1 times [2021-12-21 20:49:33,101 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 20:49:33,101 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973216571] [2021-12-21 20:49:33,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:49:33,101 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 20:49:33,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:33,138 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 20:49:33,139 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 20:49:33,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973216571] [2021-12-21 20:49:33,139 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973216571] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 20:49:33,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [287672842] [2021-12-21 20:49:33,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:49:33,139 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 20:49:33,139 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 20:49:33,141 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 20:49:33,142 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-21 20:49:33,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:33,170 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-21 20:49:33,173 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 20:49:33,262 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 20:49:33,262 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 20:49:33,307 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 20:49:33,308 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [287672842] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 20:49:33,308 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-21 20:49:33,308 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2021-12-21 20:49:33,308 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35604910] [2021-12-21 20:49:33,308 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-21 20:49:33,308 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-21 20:49:33,309 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 20:49:33,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-21 20:49:33,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2021-12-21 20:49:33,309 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 20:49:33,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 20:49:33,338 INFO L93 Difference]: Finished difference Result 42 states and 48 transitions. [2021-12-21 20:49:33,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 20:49:33,338 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 0 states have call successors, (0), 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 [2021-12-21 20:49:33,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 20:49:33,338 INFO L225 Difference]: With dead ends: 42 [2021-12-21 20:49:33,339 INFO L226 Difference]: Without dead ends: 30 [2021-12-21 20:49:33,339 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2021-12-21 20:49:33,339 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 24 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 20:49:33,340 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 10 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 20:49:33,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-12-21 20:49:33,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2021-12-21 20:49:33,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 27 states have (on average 1.1851851851851851) internal successors, (32), 29 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 20:49:33,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 32 transitions. [2021-12-21 20:49:33,343 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 32 transitions. Word has length 16 [2021-12-21 20:49:33,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 20:49:33,343 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 32 transitions. [2021-12-21 20:49:33,343 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 20:49:33,343 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 32 transitions. [2021-12-21 20:49:33,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-12-21 20:49:33,344 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 20:49:33,344 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 20:49:33,363 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-21 20:49:33,560 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-12-21 20:49:33,560 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-12-21 20:49:33,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 20:49:33,561 INFO L85 PathProgramCache]: Analyzing trace with hash -1505428003, now seen corresponding path program 2 times [2021-12-21 20:49:33,561 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 20:49:33,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632174336] [2021-12-21 20:49:33,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:49:33,561 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 20:49:33,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:33,602 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-21 20:49:33,602 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 20:49:33,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632174336] [2021-12-21 20:49:33,605 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632174336] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 20:49:33,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [624965094] [2021-12-21 20:49:33,605 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-21 20:49:33,606 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 20:49:33,606 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 20:49:33,607 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 20:49:33,608 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-21 20:49:33,635 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-21 20:49:33,636 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-21 20:49:33,636 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-21 20:49:33,638 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 20:49:33,763 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 18 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 20:49:33,764 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 20:49:33,894 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 20:49:33,895 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [624965094] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 20:49:33,895 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-21 20:49:33,895 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 6] total 14 [2021-12-21 20:49:33,895 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204377303] [2021-12-21 20:49:33,895 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-21 20:49:33,896 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-21 20:49:33,896 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 20:49:33,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-21 20:49:33,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2021-12-21 20:49:33,897 INFO L87 Difference]: Start difference. First operand 30 states and 32 transitions. Second operand has 15 states, 14 states have (on average 4.357142857142857) internal successors, (61), 15 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 20:49:34,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 20:49:34,128 INFO L93 Difference]: Finished difference Result 81 states and 101 transitions. [2021-12-21 20:49:34,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-21 20:49:34,129 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 4.357142857142857) internal successors, (61), 15 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-12-21 20:49:34,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 20:49:34,129 INFO L225 Difference]: With dead ends: 81 [2021-12-21 20:49:34,129 INFO L226 Difference]: Without dead ends: 66 [2021-12-21 20:49:34,130 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=256, Invalid=446, Unknown=0, NotChecked=0, Total=702 [2021-12-21 20:49:34,130 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 88 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 20:49:34,131 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [88 Valid, 10 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 20:49:34,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2021-12-21 20:49:34,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 52. [2021-12-21 20:49:34,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 50 states have (on average 1.2) internal successors, (60), 51 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 20:49:34,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 60 transitions. [2021-12-21 20:49:34,136 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 60 transitions. Word has length 24 [2021-12-21 20:49:34,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 20:49:34,136 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 60 transitions. [2021-12-21 20:49:34,136 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 4.357142857142857) internal successors, (61), 15 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 20:49:34,136 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 60 transitions. [2021-12-21 20:49:34,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-12-21 20:49:34,137 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 20:49:34,137 INFO L514 BasicCegarLoop]: trace histogram [5, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 20:49:34,155 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-21 20:49:34,347 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-12-21 20:49:34,347 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-12-21 20:49:34,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 20:49:34,348 INFO L85 PathProgramCache]: Analyzing trace with hash -1505427811, now seen corresponding path program 1 times [2021-12-21 20:49:34,348 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 20:49:34,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688393879] [2021-12-21 20:49:34,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:49:34,348 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 20:49:34,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:34,391 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 10 proven. 9 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-12-21 20:49:34,391 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 20:49:34,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688393879] [2021-12-21 20:49:34,391 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688393879] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 20:49:34,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1440184429] [2021-12-21 20:49:34,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:49:34,392 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 20:49:34,392 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 20:49:34,393 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 20:49:34,394 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-21 20:49:34,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:34,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-21 20:49:34,418 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 20:49:34,526 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 20:49:34,527 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 20:49:34,637 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 20:49:34,638 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1440184429] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 20:49:34,638 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-21 20:49:34,638 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 15 [2021-12-21 20:49:34,638 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050670882] [2021-12-21 20:49:34,638 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-21 20:49:34,639 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-12-21 20:49:34,639 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 20:49:34,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-21 20:49:34,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2021-12-21 20:49:34,641 INFO L87 Difference]: Start difference. First operand 52 states and 60 transitions. Second operand has 16 states, 15 states have (on average 4.333333333333333) internal successors, (65), 16 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) [2021-12-21 20:49:34,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 20:49:34,893 INFO L93 Difference]: Finished difference Result 101 states and 123 transitions. [2021-12-21 20:49:34,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-21 20:49:34,894 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 4.333333333333333) internal successors, (65), 16 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-12-21 20:49:34,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 20:49:34,895 INFO L225 Difference]: With dead ends: 101 [2021-12-21 20:49:34,895 INFO L226 Difference]: Without dead ends: 100 [2021-12-21 20:49:34,895 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=267, Invalid=435, Unknown=0, NotChecked=0, Total=702 [2021-12-21 20:49:34,895 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 128 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 20:49:34,896 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [128 Valid, 9 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 20:49:34,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2021-12-21 20:49:34,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 83. [2021-12-21 20:49:34,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 81 states have (on average 1.2469135802469136) internal successors, (101), 82 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) [2021-12-21 20:49:34,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 101 transitions. [2021-12-21 20:49:34,902 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 101 transitions. Word has length 24 [2021-12-21 20:49:34,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 20:49:34,902 INFO L470 AbstractCegarLoop]: Abstraction has 83 states and 101 transitions. [2021-12-21 20:49:34,902 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 4.333333333333333) internal successors, (65), 16 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) [2021-12-21 20:49:34,903 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 101 transitions. [2021-12-21 20:49:34,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-12-21 20:49:34,904 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 20:49:34,904 INFO L514 BasicCegarLoop]: trace histogram [8, 5, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1] [2021-12-21 20:49:34,922 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-21 20:49:35,115 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 20:49:35,115 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-12-21 20:49:35,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 20:49:35,116 INFO L85 PathProgramCache]: Analyzing trace with hash -1080699070, now seen corresponding path program 3 times [2021-12-21 20:49:35,116 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 20:49:35,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212413412] [2021-12-21 20:49:35,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:49:35,116 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 20:49:35,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:35,201 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 18 proven. 58 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-21 20:49:35,202 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 20:49:35,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212413412] [2021-12-21 20:49:35,203 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212413412] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 20:49:35,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1947228738] [2021-12-21 20:49:35,203 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-21 20:49:35,203 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 20:49:35,203 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 20:49:35,219 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 20:49:35,230 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-21 20:49:35,257 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-12-21 20:49:35,257 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-21 20:49:35,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-21 20:49:35,259 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 20:49:35,326 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-12-21 20:49:35,326 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 20:49:35,326 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1947228738] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 20:49:35,327 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 20:49:35,327 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 13 [2021-12-21 20:49:35,327 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132990544] [2021-12-21 20:49:35,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 20:49:35,328 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 20:49:35,328 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 20:49:35,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 20:49:35,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2021-12-21 20:49:35,329 INFO L87 Difference]: Start difference. First operand 83 states and 101 transitions. Second operand has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 20:49:35,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 20:49:35,351 INFO L93 Difference]: Finished difference Result 83 states and 101 transitions. [2021-12-21 20:49:35,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-21 20:49:35,352 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 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 36 [2021-12-21 20:49:35,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 20:49:35,353 INFO L225 Difference]: With dead ends: 83 [2021-12-21 20:49:35,353 INFO L226 Difference]: Without dead ends: 82 [2021-12-21 20:49:35,353 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2021-12-21 20:49:35,355 INFO L933 BasicCegarLoop]: 2 mSDtfsCounter, 10 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 20:49:35,355 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 6 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 20:49:35,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2021-12-21 20:49:35,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 56. [2021-12-21 20:49:35,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 1.1636363636363636) internal successors, (64), 55 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 20:49:35,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 64 transitions. [2021-12-21 20:49:35,367 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 64 transitions. Word has length 36 [2021-12-21 20:49:35,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 20:49:35,368 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 64 transitions. [2021-12-21 20:49:35,368 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 20:49:35,368 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 64 transitions. [2021-12-21 20:49:35,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-12-21 20:49:35,371 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 20:49:35,371 INFO L514 BasicCegarLoop]: trace histogram [9, 5, 5, 5, 4, 3, 3, 1, 1, 1, 1, 1, 1] [2021-12-21 20:49:35,393 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-21 20:49:35,593 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 20:49:35,594 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-12-21 20:49:35,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 20:49:35,595 INFO L85 PathProgramCache]: Analyzing trace with hash 1489118077, now seen corresponding path program 2 times [2021-12-21 20:49:35,595 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 20:49:35,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291580155] [2021-12-21 20:49:35,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:49:35,596 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 20:49:35,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:35,664 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 42 proven. 56 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-21 20:49:35,665 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 20:49:35,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291580155] [2021-12-21 20:49:35,665 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291580155] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 20:49:35,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [374057164] [2021-12-21 20:49:35,665 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-21 20:49:35,665 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 20:49:35,665 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 20:49:35,675 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 20:49:35,675 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-21 20:49:35,700 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-21 20:49:35,700 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-21 20:49:35,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 13 conjunts are in the unsatisfiable core [2021-12-21 20:49:35,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 20:49:35,908 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 44 proven. 54 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-21 20:49:35,908 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 20:49:37,221 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 42 proven. 56 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-21 20:49:37,222 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [374057164] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 20:49:37,222 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-21 20:49:37,222 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2021-12-21 20:49:37,222 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820691970] [2021-12-21 20:49:37,222 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-21 20:49:37,222 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-12-21 20:49:37,223 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 20:49:37,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-12-21 20:49:37,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=368, Unknown=0, NotChecked=0, Total=506 [2021-12-21 20:49:37,223 INFO L87 Difference]: Start difference. First operand 56 states and 64 transitions. Second operand has 23 states, 23 states have (on average 4.304347826086956) internal successors, (99), 23 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 20:49:37,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 20:49:37,520 INFO L93 Difference]: Finished difference Result 100 states and 117 transitions. [2021-12-21 20:49:37,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-21 20:49:37,521 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.304347826086956) internal successors, (99), 23 states have internal predecessors, (99), 0 states have call successors, (0), 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 [2021-12-21 20:49:37,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 20:49:37,521 INFO L225 Difference]: With dead ends: 100 [2021-12-21 20:49:37,521 INFO L226 Difference]: Without dead ends: 67 [2021-12-21 20:49:37,522 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 66 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 212 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=232, Invalid=580, Unknown=0, NotChecked=0, Total=812 [2021-12-21 20:49:37,522 INFO L933 BasicCegarLoop]: 2 mSDtfsCounter, 95 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 90 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 20:49:37,522 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [95 Valid, 11 Invalid, 324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 207 Invalid, 0 Unknown, 90 Unchecked, 0.1s Time] [2021-12-21 20:49:37,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2021-12-21 20:49:37,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 62. [2021-12-21 20:49:37,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 61 states have (on average 1.0819672131147542) internal successors, (66), 61 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 20:49:37,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 66 transitions. [2021-12-21 20:49:37,527 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 66 transitions. Word has length 40 [2021-12-21 20:49:37,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 20:49:37,527 INFO L470 AbstractCegarLoop]: Abstraction has 62 states and 66 transitions. [2021-12-21 20:49:37,527 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.304347826086956) internal successors, (99), 23 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 20:49:37,527 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 66 transitions. [2021-12-21 20:49:37,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-12-21 20:49:37,528 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 20:49:37,528 INFO L514 BasicCegarLoop]: trace histogram [10, 7, 7, 7, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2021-12-21 20:49:37,549 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-21 20:49:37,728 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-12-21 20:49:37,728 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-12-21 20:49:37,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 20:49:37,729 INFO L85 PathProgramCache]: Analyzing trace with hash 16509822, now seen corresponding path program 3 times [2021-12-21 20:49:37,729 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 20:49:37,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376296733] [2021-12-21 20:49:37,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:49:37,729 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 20:49:37,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:37,844 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 3 proven. 115 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-21 20:49:37,845 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 20:49:37,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376296733] [2021-12-21 20:49:37,845 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376296733] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 20:49:37,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [134363414] [2021-12-21 20:49:37,845 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-21 20:49:37,845 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 20:49:37,846 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 20:49:37,846 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 20:49:37,871 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-12-21 20:49:37,871 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-21 20:49:37,872 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-21 20:49:37,872 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 20:49:37,884 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-21 20:49:37,963 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 50 proven. 3 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2021-12-21 20:49:37,963 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 20:49:38,056 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 50 proven. 3 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2021-12-21 20:49:38,057 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [134363414] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 20:49:38,057 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-21 20:49:38,057 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5] total 17 [2021-12-21 20:49:38,059 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343369618] [2021-12-21 20:49:38,059 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-21 20:49:38,059 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-12-21 20:49:38,059 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 20:49:38,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-12-21 20:49:38,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=218, Unknown=0, NotChecked=0, Total=306 [2021-12-21 20:49:38,060 INFO L87 Difference]: Start difference. First operand 62 states and 66 transitions. Second operand has 18 states, 17 states have (on average 3.764705882352941) internal successors, (64), 18 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 20:49:38,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 20:49:38,206 INFO L93 Difference]: Finished difference Result 66 states and 71 transitions. [2021-12-21 20:49:38,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-21 20:49:38,207 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 3.764705882352941) internal successors, (64), 18 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-12-21 20:49:38,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 20:49:38,207 INFO L225 Difference]: With dead ends: 66 [2021-12-21 20:49:38,207 INFO L226 Difference]: Without dead ends: 0 [2021-12-21 20:49:38,207 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=208, Invalid=442, Unknown=0, NotChecked=0, Total=650 [2021-12-21 20:49:38,208 INFO L933 BasicCegarLoop]: 2 mSDtfsCounter, 86 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 20:49:38,208 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [86 Valid, 8 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 20:49:38,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-12-21 20:49:38,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-12-21 20:49:38,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 20:49:38,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-12-21 20:49:38,209 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 44 [2021-12-21 20:49:38,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 20:49:38,209 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-21 20:49:38,209 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 3.764705882352941) internal successors, (64), 18 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 20:49:38,209 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-12-21 20:49:38,209 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-12-21 20:49:38,211 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 8 remaining) [2021-12-21 20:49:38,211 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 8 remaining) [2021-12-21 20:49:38,211 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 8 remaining) [2021-12-21 20:49:38,211 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 8 remaining) [2021-12-21 20:49:38,211 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 8 remaining) [2021-12-21 20:49:38,211 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 8 remaining) [2021-12-21 20:49:38,211 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 8 remaining) [2021-12-21 20:49:38,211 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 8 remaining) [2021-12-21 20:49:38,246 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-21 20:49:38,419 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 20:49:38,421 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-12-21 20:49:38,560 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 23) no Hoare annotation was computed. [2021-12-21 20:49:38,560 INFO L858 garLoopResultBuilder]: For program point L31(line 31) no Hoare annotation was computed. [2021-12-21 20:49:38,560 INFO L858 garLoopResultBuilder]: For program point L31-1(line 31) no Hoare annotation was computed. [2021-12-21 20:49:38,560 INFO L858 garLoopResultBuilder]: For program point L23(line 23) no Hoare annotation was computed. [2021-12-21 20:49:38,560 INFO L858 garLoopResultBuilder]: For program point L23-1(line 23) no Hoare annotation was computed. [2021-12-21 20:49:38,560 INFO L858 garLoopResultBuilder]: For program point L23-3(lines 21 37) no Hoare annotation was computed. [2021-12-21 20:49:38,560 INFO L861 garLoopResultBuilder]: At program point L52(line 52) the Hoare annotation is: true [2021-12-21 20:49:38,560 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW(line 33) no Hoare annotation was computed. [2021-12-21 20:49:38,560 INFO L861 garLoopResultBuilder]: At program point L36(lines 20 37) the Hoare annotation is: true [2021-12-21 20:49:38,560 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-12-21 20:49:38,560 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2021-12-21 20:49:38,560 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-12-21 20:49:38,561 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 31) no Hoare annotation was computed. [2021-12-21 20:49:38,561 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-12-21 20:49:38,561 INFO L858 garLoopResultBuilder]: For program point L53(line 53) no Hoare annotation was computed. [2021-12-21 20:49:38,561 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2021-12-21 20:49:38,561 INFO L858 garLoopResultBuilder]: For program point L33(line 33) no Hoare annotation was computed. [2021-12-21 20:49:38,561 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-12-21 20:49:38,561 INFO L858 garLoopResultBuilder]: For program point L33-1(line 33) no Hoare annotation was computed. [2021-12-21 20:49:38,561 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 31) no Hoare annotation was computed. [2021-12-21 20:49:38,561 INFO L858 garLoopResultBuilder]: For program point L29-2(lines 29 35) no Hoare annotation was computed. [2021-12-21 20:49:38,561 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 23) no Hoare annotation was computed. [2021-12-21 20:49:38,561 INFO L858 garLoopResultBuilder]: For program point L30(lines 30 34) no Hoare annotation was computed. [2021-12-21 20:49:38,561 INFO L854 garLoopResultBuilder]: At program point L30-2(lines 29 35) the Hoare annotation is: (let ((.cse1 (= |ULTIMATE.start_gcd_test_~b#1| 18)) (.cse2 (+ |ULTIMATE.start_gcd_test_~b#1| |ULTIMATE.start_gcd_test_~a#1|))) (or (let ((.cse0 (+ |ULTIMATE.start_gcd_test_~a#1| (* |ULTIMATE.start_gcd_test_~b#1| 3)))) (and (<= .cse0 63) (<= 63 .cse0) .cse1)) (and (<= .cse2 63) (<= 63 .cse2) .cse1) (and (<= 63 |ULTIMATE.start_gcd_test_~a#1|) .cse1 (<= |ULTIMATE.start_gcd_test_~a#1| 63)) (and (<= |ULTIMATE.start_gcd_test_~a#1| 2147483647) (<= 0 |ULTIMATE.start_gcd_test_~b#1|) (<= |ULTIMATE.start_gcd_test_~b#1| 0) (< 0 |ULTIMATE.start_gcd_test_~a#1|)) (let ((.cse3 (+ |ULTIMATE.start_gcd_test_~a#1| (* |ULTIMATE.start_gcd_test_~b#1| 2)))) (and (<= .cse3 63) .cse1 (<= 63 .cse3))) (and (<= 18 (div (+ (* |ULTIMATE.start_gcd_test_~a#1| (- 1)) 63) 3)) (<= (div (+ |ULTIMATE.start_gcd_test_~a#1| (- 63)) (- 3)) 18) (<= 18 .cse2) (<= .cse2 18)))) [2021-12-21 20:49:38,561 INFO L861 garLoopResultBuilder]: At program point L55(lines 40 56) the Hoare annotation is: true [2021-12-21 20:49:38,561 INFO L858 garLoopResultBuilder]: For program point L22(line 22) no Hoare annotation was computed. [2021-12-21 20:49:38,561 INFO L858 garLoopResultBuilder]: For program point L22-1(line 22) no Hoare annotation was computed. [2021-12-21 20:49:38,561 INFO L858 garLoopResultBuilder]: For program point L22-2(line 22) no Hoare annotation was computed. [2021-12-21 20:49:38,561 INFO L861 garLoopResultBuilder]: At program point L51(line 51) the Hoare annotation is: true [2021-12-21 20:49:38,561 INFO L858 garLoopResultBuilder]: For program point L22-4(lines 21 37) no Hoare annotation was computed. [2021-12-21 20:49:38,562 INFO L861 garLoopResultBuilder]: At program point L51-1(line 51) the Hoare annotation is: true [2021-12-21 20:49:38,562 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW(line 33) no Hoare annotation was computed. [2021-12-21 20:49:38,562 INFO L858 garLoopResultBuilder]: For program point L16(line 16) no Hoare annotation was computed. [2021-12-21 20:49:38,562 INFO L858 garLoopResultBuilder]: For program point L15(lines 15 17) no Hoare annotation was computed. [2021-12-21 20:49:38,562 INFO L861 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 14 19) the Hoare annotation is: true [2021-12-21 20:49:38,562 INFO L858 garLoopResultBuilder]: For program point L15-2(lines 14 19) no Hoare annotation was computed. [2021-12-21 20:49:38,562 INFO L858 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 14 19) no Hoare annotation was computed. [2021-12-21 20:49:38,564 INFO L732 BasicCegarLoop]: Path program histogram: [3, 3, 1, 1, 1, 1, 1] [2021-12-21 20:49:38,565 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-21 20:49:38,576 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.12 08:49:38 BoogieIcfgContainer [2021-12-21 20:49:38,576 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-21 20:49:38,577 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-21 20:49:38,577 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-21 20:49:38,577 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-21 20:49:38,577 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 08:49:32" (3/4) ... [2021-12-21 20:49:38,579 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-12-21 20:49:38,583 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2021-12-21 20:49:38,585 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2021-12-21 20:49:38,585 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2021-12-21 20:49:38,585 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-12-21 20:49:38,585 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-12-21 20:49:38,603 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-21 20:49:38,604 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-21 20:49:38,604 INFO L158 Benchmark]: Toolchain (without parser) took 6642.59ms. Allocated memory was 98.6MB in the beginning and 119.5MB in the end (delta: 21.0MB). Free memory was 66.4MB in the beginning and 85.2MB in the end (delta: -18.8MB). Peak memory consumption was 845.3kB. Max. memory is 16.1GB. [2021-12-21 20:49:38,604 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 81.8MB. Free memory was 52.2MB in the beginning and 52.1MB in the end (delta: 27.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-21 20:49:38,604 INFO L158 Benchmark]: CACSL2BoogieTranslator took 171.74ms. Allocated memory is still 98.6MB. Free memory was 66.4MB in the beginning and 75.2MB in the end (delta: -8.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-21 20:49:38,605 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.31ms. Allocated memory is still 98.6MB. Free memory was 75.2MB in the beginning and 73.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-21 20:49:38,605 INFO L158 Benchmark]: Boogie Preprocessor took 27.82ms. Allocated memory is still 98.6MB. Free memory was 73.6MB in the beginning and 72.6MB in the end (delta: 955.7kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-21 20:49:38,605 INFO L158 Benchmark]: RCFGBuilder took 261.56ms. Allocated memory is still 98.6MB. Free memory was 72.6MB in the beginning and 62.6MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-21 20:49:38,605 INFO L158 Benchmark]: TraceAbstraction took 6114.08ms. Allocated memory was 98.6MB in the beginning and 119.5MB in the end (delta: 21.0MB). Free memory was 62.1MB in the beginning and 88.4MB in the end (delta: -26.2MB). Peak memory consumption was 56.3MB. Max. memory is 16.1GB. [2021-12-21 20:49:38,605 INFO L158 Benchmark]: Witness Printer took 27.09ms. Allocated memory is still 119.5MB. Free memory was 88.4MB in the beginning and 85.2MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-21 20:49:38,606 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 81.8MB. Free memory was 52.2MB in the beginning and 52.1MB in the end (delta: 27.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 171.74ms. Allocated memory is still 98.6MB. Free memory was 66.4MB in the beginning and 75.2MB in the end (delta: -8.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 30.31ms. Allocated memory is still 98.6MB. Free memory was 75.2MB in the beginning and 73.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 27.82ms. Allocated memory is still 98.6MB. Free memory was 73.6MB in the beginning and 72.6MB in the end (delta: 955.7kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 261.56ms. Allocated memory is still 98.6MB. Free memory was 72.6MB in the beginning and 62.6MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 6114.08ms. Allocated memory was 98.6MB in the beginning and 119.5MB in the end (delta: 21.0MB). Free memory was 62.1MB in the beginning and 88.4MB in the end (delta: -26.2MB). Peak memory consumption was 56.3MB. Max. memory is 16.1GB. * Witness Printer took 27.09ms. Allocated memory is still 119.5MB. Free memory was 88.4MB in the beginning and 85.2MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 22]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 22]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 23]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 23]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 31]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 31]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 33]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 33]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 37 locations, 8 error locations. Started 1 CEGAR loops. OverallTime: 6.1s, OverallIterations: 11, TraceHistogramMax: 10, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 503 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 500 mSDsluCounter, 122 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 90 IncrementalHoareTripleChecker+Unchecked, 57 mSDsCounter, 139 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 833 IncrementalHoareTripleChecker+Invalid, 1062 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 139 mSolverCounterUnsat, 65 mSDtfsCounter, 833 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 418 GetRequests, 288 SyntacticMatches, 2 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 713 ImplicationChecksByTransitivity, 2.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=83occurred in iteration=8, InterpolantAutomatonStates: 89, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 86 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 15 PreInvPairs, 36 NumberOfFragments, 107 HoareAnnotationTreeSize, 15 FomulaSimplifications, 47 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 542 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.9s InterpolantComputationTime, 405 NumberOfCodeBlocks, 365 NumberOfCodeBlocksAsserted, 24 NumberOfCheckSat, 531 ConstructedInterpolants, 15 QuantifiedInterpolants, 3553 SizeOfPredicates, 22 NumberOfNonLiveVariables, 402 ConjunctsInSsa, 53 ConjunctsInUnsatCore, 22 InterpolantComputations, 6 PerfectInterpolantSequences, 593/1058 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold - InvariantResult [Line: 29]: Loop Invariant Derived loop invariant: ((((((a + b * 3 <= 63 && 63 <= a + b * 3) && b == 18) || ((b + a <= 63 && 63 <= b + a) && b == 18)) || ((63 <= a && b == 18) && a <= 63)) || (((a <= 2147483647 && 0 <= b) && b <= 0) && 0 < a)) || ((a + b * 2 <= 63 && b == 18) && 63 <= a + b * 2)) || (((18 <= (a * -1 + 63) / 3 && (a + -63) / -3 <= 18) && 18 <= b + a) && b + a <= 18) - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-12-21 20:49:38,632 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE