/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Overflow-32bit-Automizer_Default.epf -i ../sv-benchmarks/c/verifythis/elimination_max_rec_onepoint.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05d3305-m [2022-10-15 22:36:05,941 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-15 22:36:05,944 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-15 22:36:05,995 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-15 22:36:05,996 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-15 22:36:06,000 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-15 22:36:06,004 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-15 22:36:06,012 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-15 22:36:06,015 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-15 22:36:06,021 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-15 22:36:06,023 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-15 22:36:06,025 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-15 22:36:06,026 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-15 22:36:06,029 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-15 22:36:06,031 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-15 22:36:06,036 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-15 22:36:06,037 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-15 22:36:06,039 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-15 22:36:06,042 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-15 22:36:06,051 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-15 22:36:06,053 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-15 22:36:06,054 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-15 22:36:06,056 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-15 22:36:06,059 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-15 22:36:06,069 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-15 22:36:06,069 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-15 22:36:06,069 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-15 22:36:06,072 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-15 22:36:06,072 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-15 22:36:06,073 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-15 22:36:06,074 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-15 22:36:06,075 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-15 22:36:06,077 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-15 22:36:06,078 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-15 22:36:06,079 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-15 22:36:06,079 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-15 22:36:06,080 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-15 22:36:06,080 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-15 22:36:06,081 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-15 22:36:06,082 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-15 22:36:06,082 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-15 22:36:06,083 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Overflow-32bit-Automizer_Default.epf [2022-10-15 22:36:06,134 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-15 22:36:06,135 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-15 22:36:06,135 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-15 22:36:06,135 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-15 22:36:06,136 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-15 22:36:06,137 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-15 22:36:06,137 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-15 22:36:06,138 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-15 22:36:06,138 INFO L138 SettingsManager]: * Use SBE=true [2022-10-15 22:36:06,138 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-15 22:36:06,138 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-15 22:36:06,139 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-15 22:36:06,139 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-15 22:36:06,139 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-15 22:36:06,139 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-15 22:36:06,140 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-15 22:36:06,140 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-15 22:36:06,140 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-15 22:36:06,140 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-10-15 22:36:06,140 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-15 22:36:06,141 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-15 22:36:06,141 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-15 22:36:06,141 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-15 22:36:06,141 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-15 22:36:06,142 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-15 22:36:06,142 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-15 22:36:06,142 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-15 22:36:06,142 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-15 22:36:06,143 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-15 22:36:06,143 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-15 22:36:06,143 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-15 22:36:06,143 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-15 22:36:06,144 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-15 22:36:06,144 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-10-15 22:36:06,505 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-15 22:36:06,536 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-15 22:36:06,540 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-15 22:36:06,542 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-15 22:36:06,543 INFO L275 PluginConnector]: CDTParser initialized [2022-10-15 22:36:06,544 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/verifythis/elimination_max_rec_onepoint.c [2022-10-15 22:36:06,631 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/875dfccd4/bbd065df51dd4e48a8cf2d55ce762c0f/FLAGd65b07302 [2022-10-15 22:36:07,241 INFO L306 CDTParser]: Found 1 translation units. [2022-10-15 22:36:07,242 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/verifythis/elimination_max_rec_onepoint.c [2022-10-15 22:36:07,252 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/875dfccd4/bbd065df51dd4e48a8cf2d55ce762c0f/FLAGd65b07302 [2022-10-15 22:36:07,632 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/875dfccd4/bbd065df51dd4e48a8cf2d55ce762c0f [2022-10-15 22:36:07,635 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-15 22:36:07,642 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-10-15 22:36:07,647 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-15 22:36:07,647 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-15 22:36:07,651 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-15 22:36:07,653 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 10:36:07" (1/1) ... [2022-10-15 22:36:07,655 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58069199 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:36:07, skipping insertion in model container [2022-10-15 22:36:07,656 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 10:36:07" (1/1) ... [2022-10-15 22:36:07,666 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-15 22:36:07,686 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-15 22:36:07,913 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/verifythis/elimination_max_rec_onepoint.c[502,515] [2022-10-15 22:36:07,935 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-15 22:36:07,949 INFO L203 MainTranslator]: Completed pre-run [2022-10-15 22:36:07,964 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/verifythis/elimination_max_rec_onepoint.c[502,515] [2022-10-15 22:36:07,975 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-15 22:36:07,993 INFO L208 MainTranslator]: Completed translation [2022-10-15 22:36:07,994 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:36:07 WrapperNode [2022-10-15 22:36:07,994 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-15 22:36:07,995 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-15 22:36:07,996 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-15 22:36:07,996 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-15 22:36:08,005 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:36:07" (1/1) ... [2022-10-15 22:36:08,015 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:36:07" (1/1) ... [2022-10-15 22:36:08,039 INFO L138 Inliner]: procedures = 19, calls = 24, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 38 [2022-10-15 22:36:08,039 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-15 22:36:08,040 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-15 22:36:08,040 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-15 22:36:08,041 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-15 22:36:08,052 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:36:07" (1/1) ... [2022-10-15 22:36:08,053 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:36:07" (1/1) ... [2022-10-15 22:36:08,056 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:36:07" (1/1) ... [2022-10-15 22:36:08,056 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:36:07" (1/1) ... [2022-10-15 22:36:08,063 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:36:07" (1/1) ... [2022-10-15 22:36:08,066 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:36:07" (1/1) ... [2022-10-15 22:36:08,068 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:36:07" (1/1) ... [2022-10-15 22:36:08,069 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:36:07" (1/1) ... [2022-10-15 22:36:08,071 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-15 22:36:08,073 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-15 22:36:08,073 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-15 22:36:08,073 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-15 22:36:08,074 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:36:07" (1/1) ... [2022-10-15 22:36:08,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-15 22:36:08,095 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 22:36:08,115 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) [2022-10-15 22:36:08,142 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 [2022-10-15 22:36:08,187 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-15 22:36:08,187 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-10-15 22:36:08,187 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-10-15 22:36:08,188 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-15 22:36:08,188 INFO L130 BoogieDeclarations]: Found specification of procedure check [2022-10-15 22:36:08,188 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2022-10-15 22:36:08,188 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-10-15 22:36:08,188 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-15 22:36:08,188 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-15 22:36:08,189 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-15 22:36:08,189 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-10-15 22:36:08,189 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-10-15 22:36:08,189 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-15 22:36:08,281 INFO L235 CfgBuilder]: Building ICFG [2022-10-15 22:36:08,284 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-15 22:36:08,517 INFO L276 CfgBuilder]: Performing block encoding [2022-10-15 22:36:08,532 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-15 22:36:08,533 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-10-15 22:36:08,535 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 10:36:08 BoogieIcfgContainer [2022-10-15 22:36:08,535 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-15 22:36:08,538 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-15 22:36:08,539 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-15 22:36:08,543 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-15 22:36:08,543 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 10:36:07" (1/3) ... [2022-10-15 22:36:08,544 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@789dacf5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 10:36:08, skipping insertion in model container [2022-10-15 22:36:08,544 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:36:07" (2/3) ... [2022-10-15 22:36:08,545 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@789dacf5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 10:36:08, skipping insertion in model container [2022-10-15 22:36:08,545 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 10:36:08" (3/3) ... [2022-10-15 22:36:08,546 INFO L112 eAbstractionObserver]: Analyzing ICFG elimination_max_rec_onepoint.c [2022-10-15 22:36:08,573 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-15 22:36:08,574 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-10-15 22:36:08,663 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-15 22:36:08,677 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@de58f52, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-15 22:36:08,677 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-10-15 22:36:08,684 INFO L276 IsEmpty]: Start isEmpty. Operand has 46 states, 28 states have (on average 1.3571428571428572) internal successors, (38), 34 states have internal predecessors, (38), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-10-15 22:36:08,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-10-15 22:36:08,694 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 22:36:08,695 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 22:36:08,695 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, checkErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-10-15 22:36:08,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 22:36:08,702 INFO L85 PathProgramCache]: Analyzing trace with hash -1346921732, now seen corresponding path program 1 times [2022-10-15 22:36:08,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 22:36:08,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434799275] [2022-10-15 22:36:08,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 22:36:08,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 22:36:08,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:08,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 22:36:08,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:08,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-15 22:36:08,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:08,975 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-10-15 22:36:08,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 22:36:08,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434799275] [2022-10-15 22:36:08,977 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434799275] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 22:36:08,978 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 22:36:08,978 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-15 22:36:08,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146358639] [2022-10-15 22:36:08,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 22:36:08,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-15 22:36:08,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 22:36:09,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-15 22:36:09,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-15 22:36:09,035 INFO L87 Difference]: Start difference. First operand has 46 states, 28 states have (on average 1.3571428571428572) internal successors, (38), 34 states have internal predecessors, (38), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-15 22:36:09,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 22:36:09,064 INFO L93 Difference]: Finished difference Result 89 states and 112 transitions. [2022-10-15 22:36:09,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-15 22:36:09,066 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 16 [2022-10-15 22:36:09,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 22:36:09,075 INFO L225 Difference]: With dead ends: 89 [2022-10-15 22:36:09,075 INFO L226 Difference]: Without dead ends: 35 [2022-10-15 22:36:09,080 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-15 22:36:09,084 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 22:36:09,086 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 22:36:09,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-10-15 22:36:09,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2022-10-15 22:36:09,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 21 states have (on average 1.3333333333333333) internal successors, (28), 27 states have internal predecessors, (28), 6 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-10-15 22:36:09,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 38 transitions. [2022-10-15 22:36:09,126 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 38 transitions. Word has length 16 [2022-10-15 22:36:09,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 22:36:09,127 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 38 transitions. [2022-10-15 22:36:09,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-15 22:36:09,128 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 38 transitions. [2022-10-15 22:36:09,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-10-15 22:36:09,129 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 22:36:09,129 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 22:36:09,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-15 22:36:09,130 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, checkErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-10-15 22:36:09,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 22:36:09,131 INFO L85 PathProgramCache]: Analyzing trace with hash -1031497992, now seen corresponding path program 1 times [2022-10-15 22:36:09,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 22:36:09,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338828135] [2022-10-15 22:36:09,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 22:36:09,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 22:36:09,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:09,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 22:36:09,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:09,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-15 22:36:09,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:09,310 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-10-15 22:36:09,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 22:36:09,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338828135] [2022-10-15 22:36:09,311 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338828135] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 22:36:09,312 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 22:36:09,312 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-15 22:36:09,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315096727] [2022-10-15 22:36:09,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 22:36:09,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-15 22:36:09,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 22:36:09,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-15 22:36:09,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 22:36:09,315 INFO L87 Difference]: Start difference. First operand 35 states and 38 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-10-15 22:36:09,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 22:36:09,342 INFO L93 Difference]: Finished difference Result 35 states and 38 transitions. [2022-10-15 22:36:09,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-15 22:36:09,345 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 16 [2022-10-15 22:36:09,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 22:36:09,347 INFO L225 Difference]: With dead ends: 35 [2022-10-15 22:36:09,347 INFO L226 Difference]: Without dead ends: 34 [2022-10-15 22:36:09,347 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 22:36:09,349 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 3 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 22:36:09,350 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 58 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 22:36:09,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-10-15 22:36:09,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2022-10-15 22:36:09,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 21 states have (on average 1.2857142857142858) internal successors, (27), 26 states have internal predecessors, (27), 6 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-10-15 22:36:09,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 37 transitions. [2022-10-15 22:36:09,359 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 37 transitions. Word has length 16 [2022-10-15 22:36:09,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 22:36:09,361 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 37 transitions. [2022-10-15 22:36:09,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-10-15 22:36:09,361 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 37 transitions. [2022-10-15 22:36:09,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-10-15 22:36:09,362 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 22:36:09,362 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 22:36:09,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-15 22:36:09,363 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, checkErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-10-15 22:36:09,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 22:36:09,364 INFO L85 PathProgramCache]: Analyzing trace with hash -1911666638, now seen corresponding path program 1 times [2022-10-15 22:36:09,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 22:36:09,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109898484] [2022-10-15 22:36:09,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 22:36:09,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 22:36:09,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:09,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 22:36:09,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:09,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-15 22:36:09,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:09,624 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-15 22:36:09,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 22:36:09,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109898484] [2022-10-15 22:36:09,628 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109898484] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 22:36:09,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [273125355] [2022-10-15 22:36:09,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 22:36:09,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 22:36:09,631 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 22:36:09,638 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) [2022-10-15 22:36:09,643 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-10-15 22:36:09,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:09,736 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 6 conjunts are in the unsatisfiable core [2022-10-15 22:36:09,742 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 22:36:09,814 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-15 22:36:09,814 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 22:36:09,910 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-15 22:36:09,910 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [273125355] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 22:36:09,910 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 22:36:09,911 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2022-10-15 22:36:09,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363871706] [2022-10-15 22:36:09,911 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 22:36:09,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-15 22:36:09,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 22:36:09,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-15 22:36:09,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-10-15 22:36:09,916 INFO L87 Difference]: Start difference. First operand 34 states and 37 transitions. Second operand has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 7 states have internal predecessors, (20), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2022-10-15 22:36:09,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 22:36:09,967 INFO L93 Difference]: Finished difference Result 34 states and 37 transitions. [2022-10-15 22:36:09,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-15 22:36:09,968 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 7 states have internal predecessors, (20), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Word has length 17 [2022-10-15 22:36:09,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 22:36:09,969 INFO L225 Difference]: With dead ends: 34 [2022-10-15 22:36:09,970 INFO L226 Difference]: Without dead ends: 33 [2022-10-15 22:36:09,970 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-10-15 22:36:09,972 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 5 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 22:36:09,973 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 98 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 22:36:09,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-10-15 22:36:09,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2022-10-15 22:36:09,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 25 states have internal predecessors, (26), 6 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-10-15 22:36:09,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 36 transitions. [2022-10-15 22:36:09,999 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 36 transitions. Word has length 17 [2022-10-15 22:36:10,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 22:36:10,000 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 36 transitions. [2022-10-15 22:36:10,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 7 states have internal predecessors, (20), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2022-10-15 22:36:10,001 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 36 transitions. [2022-10-15 22:36:10,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-10-15 22:36:10,002 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 22:36:10,002 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 22:36:10,039 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-10-15 22:36:10,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 22:36:10,217 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting checkErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, checkErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-10-15 22:36:10,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 22:36:10,219 INFO L85 PathProgramCache]: Analyzing trace with hash 551123241, now seen corresponding path program 1 times [2022-10-15 22:36:10,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 22:36:10,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654611773] [2022-10-15 22:36:10,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 22:36:10,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 22:36:10,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:10,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 22:36:10,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:10,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-15 22:36:10,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:10,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-10-15 22:36:10,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:10,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-10-15 22:36:10,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:10,423 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-10-15 22:36:10,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 22:36:10,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654611773] [2022-10-15 22:36:10,424 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654611773] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 22:36:10,425 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 22:36:10,425 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-15 22:36:10,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248489021] [2022-10-15 22:36:10,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 22:36:10,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-15 22:36:10,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 22:36:10,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-15 22:36:10,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-15 22:36:10,430 INFO L87 Difference]: Start difference. First operand 33 states and 36 transitions. Second operand has 5 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-10-15 22:36:10,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 22:36:10,503 INFO L93 Difference]: Finished difference Result 49 states and 55 transitions. [2022-10-15 22:36:10,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-15 22:36:10,504 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 33 [2022-10-15 22:36:10,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 22:36:10,507 INFO L225 Difference]: With dead ends: 49 [2022-10-15 22:36:10,508 INFO L226 Difference]: Without dead ends: 47 [2022-10-15 22:36:10,509 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-10-15 22:36:10,514 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 18 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 22:36:10,516 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 122 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 22:36:10,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2022-10-15 22:36:10,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 44. [2022-10-15 22:36:10,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 29 states have (on average 1.2758620689655173) internal successors, (37), 33 states have internal predecessors, (37), 9 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-10-15 22:36:10,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 52 transitions. [2022-10-15 22:36:10,540 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 52 transitions. Word has length 33 [2022-10-15 22:36:10,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 22:36:10,541 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 52 transitions. [2022-10-15 22:36:10,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-10-15 22:36:10,542 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 52 transitions. [2022-10-15 22:36:10,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-10-15 22:36:10,544 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 22:36:10,544 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 22:36:10,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-15 22:36:10,545 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting checkErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, checkErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-10-15 22:36:10,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 22:36:10,547 INFO L85 PathProgramCache]: Analyzing trace with hash 551123433, now seen corresponding path program 1 times [2022-10-15 22:36:10,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 22:36:10,551 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697122511] [2022-10-15 22:36:10,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 22:36:10,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 22:36:10,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:10,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 22:36:10,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:10,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-15 22:36:10,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:10,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-10-15 22:36:10,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:10,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-10-15 22:36:10,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:10,838 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-10-15 22:36:10,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 22:36:10,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697122511] [2022-10-15 22:36:10,839 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697122511] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 22:36:10,839 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 22:36:10,840 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-15 22:36:10,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216589636] [2022-10-15 22:36:10,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 22:36:10,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-15 22:36:10,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 22:36:10,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-15 22:36:10,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-10-15 22:36:10,844 INFO L87 Difference]: Start difference. First operand 44 states and 52 transitions. Second operand has 6 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-10-15 22:36:10,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 22:36:10,950 INFO L93 Difference]: Finished difference Result 44 states and 52 transitions. [2022-10-15 22:36:10,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-15 22:36:10,951 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 33 [2022-10-15 22:36:10,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 22:36:10,953 INFO L225 Difference]: With dead ends: 44 [2022-10-15 22:36:10,953 INFO L226 Difference]: Without dead ends: 43 [2022-10-15 22:36:10,954 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-10-15 22:36:10,958 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 21 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 22:36:10,962 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 86 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 22:36:10,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-10-15 22:36:10,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2022-10-15 22:36:10,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 29 states have (on average 1.206896551724138) internal successors, (35), 32 states have internal predecessors, (35), 9 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-10-15 22:36:10,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 50 transitions. [2022-10-15 22:36:10,978 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 50 transitions. Word has length 33 [2022-10-15 22:36:10,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 22:36:10,978 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 50 transitions. [2022-10-15 22:36:10,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-10-15 22:36:10,979 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 50 transitions. [2022-10-15 22:36:10,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-10-15 22:36:10,980 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 22:36:10,980 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 22:36:10,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-10-15 22:36:10,980 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting checkErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, checkErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-10-15 22:36:10,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 22:36:10,981 INFO L85 PathProgramCache]: Analyzing trace with hash -95042683, now seen corresponding path program 1 times [2022-10-15 22:36:10,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 22:36:10,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767350495] [2022-10-15 22:36:10,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 22:36:10,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 22:36:10,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:11,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 22:36:11,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:11,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-15 22:36:11,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:11,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-10-15 22:36:11,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:11,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-10-15 22:36:11,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:11,122 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-10-15 22:36:11,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 22:36:11,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767350495] [2022-10-15 22:36:11,123 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767350495] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 22:36:11,123 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 22:36:11,123 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-15 22:36:11,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900539754] [2022-10-15 22:36:11,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 22:36:11,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-15 22:36:11,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 22:36:11,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-15 22:36:11,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-10-15 22:36:11,125 INFO L87 Difference]: Start difference. First operand 43 states and 50 transitions. Second operand has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-10-15 22:36:11,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 22:36:11,211 INFO L93 Difference]: Finished difference Result 45 states and 51 transitions. [2022-10-15 22:36:11,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-15 22:36:11,212 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 34 [2022-10-15 22:36:11,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 22:36:11,215 INFO L225 Difference]: With dead ends: 45 [2022-10-15 22:36:11,215 INFO L226 Difference]: Without dead ends: 44 [2022-10-15 22:36:11,216 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-10-15 22:36:11,220 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 15 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 22:36:11,223 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 171 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 22:36:11,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-10-15 22:36:11,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2022-10-15 22:36:11,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 29 states have (on average 1.1724137931034482) internal successors, (34), 32 states have internal predecessors, (34), 9 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-10-15 22:36:11,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 49 transitions. [2022-10-15 22:36:11,241 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 49 transitions. Word has length 34 [2022-10-15 22:36:11,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 22:36:11,243 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 49 transitions. [2022-10-15 22:36:11,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-10-15 22:36:11,244 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 49 transitions. [2022-10-15 22:36:11,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-10-15 22:36:11,247 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 22:36:11,248 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 22:36:11,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-10-15 22:36:11,249 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting checkErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, checkErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-10-15 22:36:11,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 22:36:11,250 INFO L85 PathProgramCache]: Analyzing trace with hash -1626861010, now seen corresponding path program 1 times [2022-10-15 22:36:11,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 22:36:11,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009466130] [2022-10-15 22:36:11,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 22:36:11,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 22:36:11,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:11,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 22:36:11,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:11,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-15 22:36:11,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:11,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-10-15 22:36:11,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:11,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-10-15 22:36:11,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:11,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-10-15 22:36:11,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:11,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-10-15 22:36:11,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:11,496 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-10-15 22:36:11,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 22:36:11,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009466130] [2022-10-15 22:36:11,496 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009466130] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 22:36:11,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [90717965] [2022-10-15 22:36:11,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 22:36:11,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 22:36:11,497 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 22:36:11,498 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) [2022-10-15 22:36:11,521 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-10-15 22:36:11,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:11,583 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 8 conjunts are in the unsatisfiable core [2022-10-15 22:36:11,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 22:36:11,650 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-10-15 22:36:11,651 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 22:36:11,759 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-10-15 22:36:11,759 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [90717965] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 22:36:11,759 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 22:36:11,759 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2022-10-15 22:36:11,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665259349] [2022-10-15 22:36:11,760 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 22:36:11,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-10-15 22:36:11,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 22:36:11,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-10-15 22:36:11,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2022-10-15 22:36:11,762 INFO L87 Difference]: Start difference. First operand 43 states and 49 transitions. Second operand has 17 states, 16 states have (on average 2.5625) internal successors, (41), 12 states have internal predecessors, (41), 6 states have call successors, (17), 6 states have call predecessors, (17), 1 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) [2022-10-15 22:36:12,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 22:36:12,092 INFO L93 Difference]: Finished difference Result 87 states and 104 transitions. [2022-10-15 22:36:12,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-10-15 22:36:12,092 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.5625) internal successors, (41), 12 states have internal predecessors, (41), 6 states have call successors, (17), 6 states have call predecessors, (17), 1 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) Word has length 50 [2022-10-15 22:36:12,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 22:36:12,094 INFO L225 Difference]: With dead ends: 87 [2022-10-15 22:36:12,094 INFO L226 Difference]: Without dead ends: 86 [2022-10-15 22:36:12,095 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=248, Invalid=682, Unknown=0, NotChecked=0, Total=930 [2022-10-15 22:36:12,096 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 113 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 22:36:12,096 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 229 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 22:36:12,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2022-10-15 22:36:12,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 75. [2022-10-15 22:36:12,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 52 states have (on average 1.25) internal successors, (65), 55 states have internal predecessors, (65), 18 states have call successors, (18), 7 states have call predecessors, (18), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-10-15 22:36:12,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 95 transitions. [2022-10-15 22:36:12,109 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 95 transitions. Word has length 50 [2022-10-15 22:36:12,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 22:36:12,109 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 95 transitions. [2022-10-15 22:36:12,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.5625) internal successors, (41), 12 states have internal predecessors, (41), 6 states have call successors, (17), 6 states have call predecessors, (17), 1 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) [2022-10-15 22:36:12,110 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 95 transitions. [2022-10-15 22:36:12,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-10-15 22:36:12,111 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 22:36:12,111 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 22:36:12,150 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-10-15 22:36:12,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-10-15 22:36:12,324 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting checkErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, checkErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-10-15 22:36:12,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 22:36:12,326 INFO L85 PathProgramCache]: Analyzing trace with hash 1106916314, now seen corresponding path program 1 times [2022-10-15 22:36:12,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 22:36:12,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667487547] [2022-10-15 22:36:12,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 22:36:12,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 22:36:12,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:12,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 22:36:12,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:12,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-15 22:36:12,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:12,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-10-15 22:36:12,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:12,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-10-15 22:36:12,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:12,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-10-15 22:36:12,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:12,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-10-15 22:36:12,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:12,676 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-10-15 22:36:12,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 22:36:12,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667487547] [2022-10-15 22:36:12,677 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667487547] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 22:36:12,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1870423381] [2022-10-15 22:36:12,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 22:36:12,678 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 22:36:12,678 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 22:36:12,679 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) [2022-10-15 22:36:12,696 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-10-15 22:36:12,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:12,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 8 conjunts are in the unsatisfiable core [2022-10-15 22:36:12,756 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 22:36:12,829 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-10-15 22:36:12,830 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-15 22:36:12,830 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1870423381] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 22:36:12,830 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-15 22:36:12,830 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 10 [2022-10-15 22:36:12,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593339889] [2022-10-15 22:36:12,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 22:36:12,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-15 22:36:12,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 22:36:12,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-15 22:36:12,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-10-15 22:36:12,833 INFO L87 Difference]: Start difference. First operand 75 states and 95 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 6 states have internal predecessors, (25), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-10-15 22:36:12,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 22:36:12,943 INFO L93 Difference]: Finished difference Result 76 states and 96 transitions. [2022-10-15 22:36:12,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-15 22:36:12,944 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 6 states have internal predecessors, (25), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 51 [2022-10-15 22:36:12,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 22:36:12,949 INFO L225 Difference]: With dead ends: 76 [2022-10-15 22:36:12,949 INFO L226 Difference]: Without dead ends: 75 [2022-10-15 22:36:12,949 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2022-10-15 22:36:12,950 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 33 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 22:36:12,951 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 161 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 22:36:12,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2022-10-15 22:36:12,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 74. [2022-10-15 22:36:12,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 52 states have (on average 1.1923076923076923) internal successors, (62), 54 states have internal predecessors, (62), 18 states have call successors, (18), 7 states have call predecessors, (18), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-10-15 22:36:12,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 92 transitions. [2022-10-15 22:36:12,976 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 92 transitions. Word has length 51 [2022-10-15 22:36:12,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 22:36:12,977 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 92 transitions. [2022-10-15 22:36:12,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 6 states have internal predecessors, (25), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-10-15 22:36:12,978 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 92 transitions. [2022-10-15 22:36:12,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-10-15 22:36:12,982 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 22:36:12,982 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 22:36:13,018 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-10-15 22:36:13,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 22:36:13,197 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting checkErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, checkErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-10-15 22:36:13,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 22:36:13,198 INFO L85 PathProgramCache]: Analyzing trace with hash 1106922272, now seen corresponding path program 1 times [2022-10-15 22:36:13,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 22:36:13,199 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352842109] [2022-10-15 22:36:13,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 22:36:13,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 22:36:13,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:13,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 22:36:13,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:13,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-15 22:36:13,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:13,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-10-15 22:36:13,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:13,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-10-15 22:36:13,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:13,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-10-15 22:36:13,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:13,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-10-15 22:36:13,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:13,413 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-10-15 22:36:13,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 22:36:13,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352842109] [2022-10-15 22:36:13,413 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352842109] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 22:36:13,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [342429300] [2022-10-15 22:36:13,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 22:36:13,414 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 22:36:13,414 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 22:36:13,415 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) [2022-10-15 22:36:13,419 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-10-15 22:36:13,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:13,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 9 conjunts are in the unsatisfiable core [2022-10-15 22:36:13,488 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 22:36:13,585 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-10-15 22:36:13,586 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 22:36:13,727 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-10-15 22:36:13,728 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [342429300] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 22:36:13,728 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 22:36:13,728 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 21 [2022-10-15 22:36:13,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734277950] [2022-10-15 22:36:13,728 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 22:36:13,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-10-15 22:36:13,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 22:36:13,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-10-15 22:36:13,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=390, Unknown=0, NotChecked=0, Total=462 [2022-10-15 22:36:13,731 INFO L87 Difference]: Start difference. First operand 74 states and 92 transitions. Second operand has 22 states, 21 states have (on average 2.3333333333333335) internal successors, (49), 16 states have internal predecessors, (49), 9 states have call successors, (20), 7 states have call predecessors, (20), 1 states have return successors, (14), 7 states have call predecessors, (14), 7 states have call successors, (14) [2022-10-15 22:36:14,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 22:36:14,011 INFO L93 Difference]: Finished difference Result 78 states and 96 transitions. [2022-10-15 22:36:14,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-10-15 22:36:14,012 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 2.3333333333333335) internal successors, (49), 16 states have internal predecessors, (49), 9 states have call successors, (20), 7 states have call predecessors, (20), 1 states have return successors, (14), 7 states have call predecessors, (14), 7 states have call successors, (14) Word has length 51 [2022-10-15 22:36:14,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 22:36:14,014 INFO L225 Difference]: With dead ends: 78 [2022-10-15 22:36:14,014 INFO L226 Difference]: Without dead ends: 77 [2022-10-15 22:36:14,015 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 173 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=233, Invalid=823, Unknown=0, NotChecked=0, Total=1056 [2022-10-15 22:36:14,018 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 67 mSDsluCounter, 294 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 323 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 22:36:14,018 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 323 Invalid, 274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 228 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 22:36:14,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2022-10-15 22:36:14,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 73. [2022-10-15 22:36:14,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 52 states have (on average 1.1153846153846154) internal successors, (58), 53 states have internal predecessors, (58), 18 states have call successors, (18), 7 states have call predecessors, (18), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-10-15 22:36:14,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 88 transitions. [2022-10-15 22:36:14,045 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 88 transitions. Word has length 51 [2022-10-15 22:36:14,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 22:36:14,045 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 88 transitions. [2022-10-15 22:36:14,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 2.3333333333333335) internal successors, (49), 16 states have internal predecessors, (49), 9 states have call successors, (20), 7 states have call predecessors, (20), 1 states have return successors, (14), 7 states have call predecessors, (14), 7 states have call successors, (14) [2022-10-15 22:36:14,046 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 88 transitions. [2022-10-15 22:36:14,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-10-15 22:36:14,052 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 22:36:14,053 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 22:36:14,083 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-10-15 22:36:14,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 22:36:14,263 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting checkErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, checkErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-10-15 22:36:14,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 22:36:14,264 INFO L85 PathProgramCache]: Analyzing trace with hash 1638655593, now seen corresponding path program 2 times [2022-10-15 22:36:14,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 22:36:14,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74621830] [2022-10-15 22:36:14,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 22:36:14,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 22:36:14,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:14,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 22:36:14,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:14,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-15 22:36:14,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:14,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-10-15 22:36:14,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:14,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-10-15 22:36:14,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:14,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-10-15 22:36:14,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:14,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-10-15 22:36:14,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:14,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-10-15 22:36:14,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:14,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-10-15 22:36:14,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:14,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-10-15 22:36:14,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:14,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-10-15 22:36:14,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:14,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-10-15 22:36:14,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:14,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-10-15 22:36:14,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:14,802 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 82 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2022-10-15 22:36:14,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 22:36:14,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74621830] [2022-10-15 22:36:14,803 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74621830] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 22:36:14,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1348752181] [2022-10-15 22:36:14,803 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-15 22:36:14,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 22:36:14,803 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 22:36:14,804 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) [2022-10-15 22:36:14,827 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-10-15 22:36:14,911 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-15 22:36:14,911 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 22:36:14,914 INFO L263 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 20 conjunts are in the unsatisfiable core [2022-10-15 22:36:14,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 22:36:15,061 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 82 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2022-10-15 22:36:15,062 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 22:36:15,352 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 82 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2022-10-15 22:36:15,352 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1348752181] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 22:36:15,352 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 22:36:15,353 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-10-15 22:36:15,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193225485] [2022-10-15 22:36:15,353 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 22:36:15,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-10-15 22:36:15,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 22:36:15,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-10-15 22:36:15,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=232, Invalid=958, Unknown=0, NotChecked=0, Total=1190 [2022-10-15 22:36:15,356 INFO L87 Difference]: Start difference. First operand 73 states and 88 transitions. Second operand has 35 states, 34 states have (on average 2.264705882352941) internal successors, (77), 24 states have internal predecessors, (77), 12 states have call successors, (35), 12 states have call predecessors, (35), 1 states have return successors, (24), 12 states have call predecessors, (24), 12 states have call successors, (24) [2022-10-15 22:36:15,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 22:36:15,982 INFO L93 Difference]: Finished difference Result 151 states and 189 transitions. [2022-10-15 22:36:15,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-10-15 22:36:15,983 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 2.264705882352941) internal successors, (77), 24 states have internal predecessors, (77), 12 states have call successors, (35), 12 states have call predecessors, (35), 1 states have return successors, (24), 12 states have call predecessors, (24), 12 states have call successors, (24) Word has length 101 [2022-10-15 22:36:15,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 22:36:15,985 INFO L225 Difference]: With dead ends: 151 [2022-10-15 22:36:15,985 INFO L226 Difference]: Without dead ends: 150 [2022-10-15 22:36:15,987 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 211 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1104 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=986, Invalid=3046, Unknown=0, NotChecked=0, Total=4032 [2022-10-15 22:36:15,988 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 356 mSDsluCounter, 305 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 356 SdHoareTripleChecker+Valid, 353 SdHoareTripleChecker+Invalid, 347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-15 22:36:15,989 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [356 Valid, 353 Invalid, 347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-15 22:36:15,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2022-10-15 22:36:16,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 139. [2022-10-15 22:36:16,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 100 states have (on average 1.12) internal successors, (112), 101 states have internal predecessors, (112), 36 states have call successors, (36), 13 states have call predecessors, (36), 2 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2022-10-15 22:36:16,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 172 transitions. [2022-10-15 22:36:16,008 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 172 transitions. Word has length 101 [2022-10-15 22:36:16,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 22:36:16,009 INFO L495 AbstractCegarLoop]: Abstraction has 139 states and 172 transitions. [2022-10-15 22:36:16,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 2.264705882352941) internal successors, (77), 24 states have internal predecessors, (77), 12 states have call successors, (35), 12 states have call predecessors, (35), 1 states have return successors, (24), 12 states have call predecessors, (24), 12 states have call successors, (24) [2022-10-15 22:36:16,009 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 172 transitions. [2022-10-15 22:36:16,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2022-10-15 22:36:16,012 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 22:36:16,012 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 22:36:16,047 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-10-15 22:36:16,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-10-15 22:36:16,226 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting checkErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, checkErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-10-15 22:36:16,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 22:36:16,227 INFO L85 PathProgramCache]: Analyzing trace with hash 269196873, now seen corresponding path program 3 times [2022-10-15 22:36:16,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 22:36:16,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314229299] [2022-10-15 22:36:16,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 22:36:16,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 22:36:16,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:17,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 22:36:17,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:17,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-15 22:36:17,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:17,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-10-15 22:36:17,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:17,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-10-15 22:36:17,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:17,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-10-15 22:36:17,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:17,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-10-15 22:36:17,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:17,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-10-15 22:36:17,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:17,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-10-15 22:36:17,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:17,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-10-15 22:36:17,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:17,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-10-15 22:36:17,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:17,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-10-15 22:36:17,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:17,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-10-15 22:36:17,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:17,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-10-15 22:36:17,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:17,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-10-15 22:36:17,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:17,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-10-15 22:36:17,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:17,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-10-15 22:36:17,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:17,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-10-15 22:36:17,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:17,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-10-15 22:36:17,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:17,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-10-15 22:36:17,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:17,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-10-15 22:36:18,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:18,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-10-15 22:36:18,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:18,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-10-15 22:36:18,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:18,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-10-15 22:36:18,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:18,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-10-15 22:36:18,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:18,033 INFO L134 CoverageAnalysis]: Checked inductivity of 1007 backedges. 0 proven. 475 refuted. 0 times theorem prover too weak. 532 trivial. 0 not checked. [2022-10-15 22:36:18,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 22:36:18,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314229299] [2022-10-15 22:36:18,034 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314229299] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 22:36:18,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1577305215] [2022-10-15 22:36:18,034 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-10-15 22:36:18,034 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 22:36:18,035 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 22:36:18,036 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) [2022-10-15 22:36:18,055 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-10-15 22:36:18,268 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) [2022-10-15 22:36:18,269 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 22:36:18,274 INFO L263 TraceCheckSpWp]: Trace formula consists of 736 conjuncts, 26 conjunts are in the unsatisfiable core [2022-10-15 22:36:18,301 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 22:36:18,588 INFO L134 CoverageAnalysis]: Checked inductivity of 1007 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 957 trivial. 0 not checked. [2022-10-15 22:36:18,588 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 22:36:18,936 INFO L134 CoverageAnalysis]: Checked inductivity of 1007 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 957 trivial. 0 not checked. [2022-10-15 22:36:18,936 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1577305215] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 22:36:18,936 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 22:36:18,937 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 6, 6] total 44 [2022-10-15 22:36:18,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335260511] [2022-10-15 22:36:18,937 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 22:36:18,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-10-15 22:36:18,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 22:36:18,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-10-15 22:36:18,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=301, Invalid=1679, Unknown=0, NotChecked=0, Total=1980 [2022-10-15 22:36:18,941 INFO L87 Difference]: Start difference. First operand 139 states and 172 transitions. Second operand has 45 states, 44 states have (on average 2.5) internal successors, (110), 32 states have internal predecessors, (110), 18 states have call successors, (51), 14 states have call predecessors, (51), 1 states have return successors, (36), 18 states have call predecessors, (36), 18 states have call successors, (36) [2022-10-15 22:36:22,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 22:36:22,074 INFO L93 Difference]: Finished difference Result 307 states and 381 transitions. [2022-10-15 22:36:22,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2022-10-15 22:36:22,075 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 44 states have (on average 2.5) internal successors, (110), 32 states have internal predecessors, (110), 18 states have call successors, (51), 14 states have call predecessors, (51), 1 states have return successors, (36), 18 states have call predecessors, (36), 18 states have call successors, (36) Word has length 203 [2022-10-15 22:36:22,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 22:36:22,080 INFO L225 Difference]: With dead ends: 307 [2022-10-15 22:36:22,080 INFO L226 Difference]: Without dead ends: 306 [2022-10-15 22:36:22,088 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 589 GetRequests, 453 SyntacticMatches, 0 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5493 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=4130, Invalid=14776, Unknown=0, NotChecked=0, Total=18906 [2022-10-15 22:36:22,089 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 1119 mSDsluCounter, 674 mSDsCounter, 0 mSdLazyCounter, 530 mSolverCounterSat, 336 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1119 SdHoareTripleChecker+Valid, 744 SdHoareTripleChecker+Invalid, 866 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 336 IncrementalHoareTripleChecker+Valid, 530 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-10-15 22:36:22,089 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1119 Valid, 744 Invalid, 866 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [336 Valid, 530 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-10-15 22:36:22,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2022-10-15 22:36:22,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 255. [2022-10-15 22:36:22,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 178 states have (on average 1.1404494382022472) internal successors, (203), 178 states have internal predecessors, (203), 74 states have call successors, (74), 26 states have call predecessors, (74), 2 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2022-10-15 22:36:22,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 327 transitions. [2022-10-15 22:36:22,123 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 327 transitions. Word has length 203 [2022-10-15 22:36:22,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 22:36:22,124 INFO L495 AbstractCegarLoop]: Abstraction has 255 states and 327 transitions. [2022-10-15 22:36:22,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 44 states have (on average 2.5) internal successors, (110), 32 states have internal predecessors, (110), 18 states have call successors, (51), 14 states have call predecessors, (51), 1 states have return successors, (36), 18 states have call predecessors, (36), 18 states have call successors, (36) [2022-10-15 22:36:22,125 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 327 transitions. [2022-10-15 22:36:22,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2022-10-15 22:36:22,128 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 22:36:22,128 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 22:36:22,170 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-10-15 22:36:22,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 22:36:22,343 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting checkErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, checkErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-10-15 22:36:22,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 22:36:22,344 INFO L85 PathProgramCache]: Analyzing trace with hash -1401050065, now seen corresponding path program 1 times [2022-10-15 22:36:22,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 22:36:22,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775346031] [2022-10-15 22:36:22,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 22:36:22,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 22:36:22,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:24,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 22:36:24,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:24,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-15 22:36:24,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:24,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-10-15 22:36:24,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:24,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-10-15 22:36:24,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:24,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-10-15 22:36:24,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:24,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-10-15 22:36:24,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:24,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-10-15 22:36:24,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:24,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-10-15 22:36:24,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:24,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-10-15 22:36:24,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:24,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-10-15 22:36:24,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:24,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-10-15 22:36:24,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:24,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-10-15 22:36:24,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:24,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-10-15 22:36:24,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:24,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-10-15 22:36:24,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:24,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-10-15 22:36:24,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:24,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-10-15 22:36:24,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:24,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-10-15 22:36:24,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:24,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-10-15 22:36:24,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:24,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-10-15 22:36:24,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:24,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-10-15 22:36:24,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:24,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-10-15 22:36:24,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:24,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-10-15 22:36:24,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:24,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-10-15 22:36:24,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:24,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-10-15 22:36:24,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:24,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-10-15 22:36:24,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:24,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-10-15 22:36:24,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:24,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2022-10-15 22:36:24,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:24,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2022-10-15 22:36:24,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:24,264 INFO L134 CoverageAnalysis]: Checked inductivity of 1387 backedges. 0 proven. 648 refuted. 0 times theorem prover too weak. 739 trivial. 0 not checked. [2022-10-15 22:36:24,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 22:36:24,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775346031] [2022-10-15 22:36:24,264 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [775346031] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 22:36:24,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1884814332] [2022-10-15 22:36:24,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 22:36:24,265 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 22:36:24,265 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 22:36:24,266 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 22:36:24,282 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-10-15 22:36:24,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:24,439 INFO L263 TraceCheckSpWp]: Trace formula consists of 856 conjuncts, 50 conjunts are in the unsatisfiable core [2022-10-15 22:36:24,447 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 22:36:24,682 INFO L134 CoverageAnalysis]: Checked inductivity of 1387 backedges. 0 proven. 648 refuted. 0 times theorem prover too weak. 739 trivial. 0 not checked. [2022-10-15 22:36:24,683 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 22:36:25,963 INFO L134 CoverageAnalysis]: Checked inductivity of 1387 backedges. 0 proven. 648 refuted. 0 times theorem prover too weak. 739 trivial. 0 not checked. [2022-10-15 22:36:25,963 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1884814332] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 22:36:25,963 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 22:36:25,964 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37, 37] total 76 [2022-10-15 22:36:25,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140798820] [2022-10-15 22:36:25,964 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 22:36:25,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 77 states [2022-10-15 22:36:25,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 22:36:25,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2022-10-15 22:36:25,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1051, Invalid=4801, Unknown=0, NotChecked=0, Total=5852 [2022-10-15 22:36:25,971 INFO L87 Difference]: Start difference. First operand 255 states and 327 transitions. Second operand has 77 states, 76 states have (on average 2.1973684210526314) internal successors, (167), 52 states have internal predecessors, (167), 26 states have call successors, (77), 26 states have call predecessors, (77), 1 states have return successors, (52), 26 states have call predecessors, (52), 26 states have call successors, (52) [2022-10-15 22:36:28,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 22:36:28,589 INFO L93 Difference]: Finished difference Result 544 states and 706 transitions. [2022-10-15 22:36:28,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2022-10-15 22:36:28,590 INFO L78 Accepts]: Start accepts. Automaton has has 77 states, 76 states have (on average 2.1973684210526314) internal successors, (167), 52 states have internal predecessors, (167), 26 states have call successors, (77), 26 states have call predecessors, (77), 1 states have return successors, (52), 26 states have call predecessors, (52), 26 states have call successors, (52) Word has length 237 [2022-10-15 22:36:28,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 22:36:28,596 INFO L225 Difference]: With dead ends: 544 [2022-10-15 22:36:28,597 INFO L226 Difference]: Without dead ends: 543 [2022-10-15 22:36:28,608 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 649 GetRequests, 503 SyntacticMatches, 0 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6403 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=5207, Invalid=16549, Unknown=0, NotChecked=0, Total=21756 [2022-10-15 22:36:28,609 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 902 mSDsluCounter, 594 mSDsCounter, 0 mSdLazyCounter, 678 mSolverCounterSat, 240 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 902 SdHoareTripleChecker+Valid, 670 SdHoareTripleChecker+Invalid, 918 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 240 IncrementalHoareTripleChecker+Valid, 678 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-10-15 22:36:28,609 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [902 Valid, 670 Invalid, 918 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [240 Valid, 678 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-10-15 22:36:28,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 543 states. [2022-10-15 22:36:28,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 543 to 515. [2022-10-15 22:36:28,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 515 states, 360 states have (on average 1.1416666666666666) internal successors, (411), 360 states have internal predecessors, (411), 152 states have call successors, (152), 52 states have call predecessors, (152), 2 states have return successors, (102), 102 states have call predecessors, (102), 102 states have call successors, (102) [2022-10-15 22:36:28,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 515 states to 515 states and 665 transitions. [2022-10-15 22:36:28,656 INFO L78 Accepts]: Start accepts. Automaton has 515 states and 665 transitions. Word has length 237 [2022-10-15 22:36:28,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 22:36:28,657 INFO L495 AbstractCegarLoop]: Abstraction has 515 states and 665 transitions. [2022-10-15 22:36:28,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 77 states, 76 states have (on average 2.1973684210526314) internal successors, (167), 52 states have internal predecessors, (167), 26 states have call successors, (77), 26 states have call predecessors, (77), 1 states have return successors, (52), 26 states have call predecessors, (52), 26 states have call successors, (52) [2022-10-15 22:36:28,658 INFO L276 IsEmpty]: Start isEmpty. Operand 515 states and 665 transitions. [2022-10-15 22:36:28,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 459 [2022-10-15 22:36:28,669 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 22:36:28,669 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 28, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 25, 25, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 22:36:28,704 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-10-15 22:36:28,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 22:36:28,886 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting checkErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, checkErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-10-15 22:36:28,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 22:36:28,887 INFO L85 PathProgramCache]: Analyzing trace with hash 255499764, now seen corresponding path program 2 times [2022-10-15 22:36:28,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 22:36:28,887 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711228406] [2022-10-15 22:36:28,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 22:36:28,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 22:36:29,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:34,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 22:36:34,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:34,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-15 22:36:34,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:34,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-10-15 22:36:34,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:34,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-10-15 22:36:34,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:34,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-10-15 22:36:34,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:34,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-10-15 22:36:34,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:34,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-10-15 22:36:34,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:34,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-10-15 22:36:34,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:34,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-10-15 22:36:34,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:34,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-10-15 22:36:34,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:34,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-10-15 22:36:34,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:34,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-10-15 22:36:34,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:34,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-10-15 22:36:34,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:34,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-10-15 22:36:34,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:34,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-10-15 22:36:34,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:34,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-10-15 22:36:34,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:34,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-10-15 22:36:34,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:34,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-10-15 22:36:34,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:34,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-10-15 22:36:34,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:34,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-10-15 22:36:34,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:34,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-10-15 22:36:34,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:34,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-10-15 22:36:34,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:34,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-10-15 22:36:34,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:34,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-10-15 22:36:34,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:34,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-10-15 22:36:34,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:34,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-10-15 22:36:34,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:34,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2022-10-15 22:36:34,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:34,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2022-10-15 22:36:34,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:34,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2022-10-15 22:36:34,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:34,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-10-15 22:36:34,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:34,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-10-15 22:36:34,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:34,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-10-15 22:36:34,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:34,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2022-10-15 22:36:34,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:34,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2022-10-15 22:36:34,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:34,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2022-10-15 22:36:34,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:34,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2022-10-15 22:36:34,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:34,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2022-10-15 22:36:34,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:34,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2022-10-15 22:36:34,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:34,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2022-10-15 22:36:34,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:34,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2022-10-15 22:36:34,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:34,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2022-10-15 22:36:35,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:35,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2022-10-15 22:36:35,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:35,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2022-10-15 22:36:35,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:35,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2022-10-15 22:36:35,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:35,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2022-10-15 22:36:35,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:35,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 382 [2022-10-15 22:36:35,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:35,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2022-10-15 22:36:35,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:35,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2022-10-15 22:36:35,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:35,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 411 [2022-10-15 22:36:35,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:35,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 416 [2022-10-15 22:36:35,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:35,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 428 [2022-10-15 22:36:35,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:35,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 433 [2022-10-15 22:36:35,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:35,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 445 [2022-10-15 22:36:35,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:35,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 450 [2022-10-15 22:36:35,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 22:36:35,051 INFO L134 CoverageAnalysis]: Checked inductivity of 5638 backedges. 0 proven. 2819 refuted. 0 times theorem prover too weak. 2819 trivial. 0 not checked. [2022-10-15 22:36:35,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 22:36:35,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711228406] [2022-10-15 22:36:35,052 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711228406] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 22:36:35,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1717966058] [2022-10-15 22:36:35,052 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-15 22:36:35,052 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 22:36:35,052 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 22:36:35,053 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 22:36:35,055 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-10-15 22:36:35,339 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-15 22:36:35,339 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 22:36:35,354 INFO L263 TraceCheckSpWp]: Trace formula consists of 1636 conjuncts, 102 conjunts are in the unsatisfiable core [2022-10-15 22:36:35,367 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 22:36:35,800 INFO L134 CoverageAnalysis]: Checked inductivity of 5638 backedges. 0 proven. 2819 refuted. 0 times theorem prover too weak. 2819 trivial. 0 not checked. [2022-10-15 22:36:35,800 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 22:36:40,732 INFO L134 CoverageAnalysis]: Checked inductivity of 5638 backedges. 0 proven. 2819 refuted. 0 times theorem prover too weak. 2819 trivial. 0 not checked. [2022-10-15 22:36:40,732 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1717966058] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 22:36:40,733 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 22:36:40,733 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [76, 76, 76] total 154 [2022-10-15 22:36:40,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629918614] [2022-10-15 22:36:40,733 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 22:36:40,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 155 states [2022-10-15 22:36:40,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 22:36:40,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 155 interpolants. [2022-10-15 22:36:40,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4132, Invalid=19738, Unknown=0, NotChecked=0, Total=23870 [2022-10-15 22:36:40,743 INFO L87 Difference]: Start difference. First operand 515 states and 665 transitions. Second operand has 155 states, 154 states have (on average 2.0974025974025974) internal successors, (323), 104 states have internal predecessors, (323), 52 states have call successors, (155), 52 states have call predecessors, (155), 1 states have return successors, (104), 52 states have call predecessors, (104), 52 states have call successors, (104) [2022-10-15 22:36:51,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 22:36:51,390 INFO L93 Difference]: Finished difference Result 1090 states and 1421 transitions. [2022-10-15 22:36:51,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 202 states. [2022-10-15 22:36:51,391 INFO L78 Accepts]: Start accepts. Automaton has has 155 states, 154 states have (on average 2.0974025974025974) internal successors, (323), 104 states have internal predecessors, (323), 52 states have call successors, (155), 52 states have call predecessors, (155), 1 states have return successors, (104), 52 states have call predecessors, (104), 52 states have call successors, (104) Word has length 458 [2022-10-15 22:36:51,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 22:36:51,402 INFO L225 Difference]: With dead ends: 1090 [2022-10-15 22:36:51,402 INFO L226 Difference]: Without dead ends: 1089 [2022-10-15 22:36:51,413 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1273 GetRequests, 971 SyntacticMatches, 0 SemanticMatches, 302 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27814 ImplicationChecksByTransitivity, 14.5s TimeCoverageRelationStatistics Valid=21886, Invalid=70226, Unknown=0, NotChecked=0, Total=92112 [2022-10-15 22:36:51,414 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 2223 mSDsluCounter, 1369 mSDsCounter, 0 mSdLazyCounter, 1490 mSolverCounterSat, 583 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2223 SdHoareTripleChecker+Valid, 1497 SdHoareTripleChecker+Invalid, 2073 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 583 IncrementalHoareTripleChecker+Valid, 1490 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-10-15 22:36:51,414 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2223 Valid, 1497 Invalid, 2073 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [583 Valid, 1490 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-10-15 22:36:51,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1089 states. [2022-10-15 22:36:51,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1089 to 1035. [2022-10-15 22:36:51,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1035 states, 724 states have (on average 1.1422651933701657) internal successors, (827), 724 states have internal predecessors, (827), 308 states have call successors, (308), 104 states have call predecessors, (308), 2 states have return successors, (206), 206 states have call predecessors, (206), 206 states have call successors, (206) [2022-10-15 22:36:51,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1035 states to 1035 states and 1341 transitions. [2022-10-15 22:36:51,569 INFO L78 Accepts]: Start accepts. Automaton has 1035 states and 1341 transitions. Word has length 458 [2022-10-15 22:36:51,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 22:36:51,573 INFO L495 AbstractCegarLoop]: Abstraction has 1035 states and 1341 transitions. [2022-10-15 22:36:51,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 155 states, 154 states have (on average 2.0974025974025974) internal successors, (323), 104 states have internal predecessors, (323), 52 states have call successors, (155), 52 states have call predecessors, (155), 1 states have return successors, (104), 52 states have call predecessors, (104), 52 states have call successors, (104) [2022-10-15 22:36:51,575 INFO L276 IsEmpty]: Start isEmpty. Operand 1035 states and 1341 transitions. [2022-10-15 22:36:51,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 901 [2022-10-15 22:36:51,619 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 22:36:51,619 INFO L195 NwaCegarLoop]: trace histogram [54, 54, 54, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 51, 51, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 22:36:51,663 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-10-15 22:36:51,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-10-15 22:36:51,835 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting checkErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, checkErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-10-15 22:36:51,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 22:36:51,836 INFO L85 PathProgramCache]: Analyzing trace with hash 1135257556, now seen corresponding path program 3 times [2022-10-15 22:36:51,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 22:36:51,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95743261] [2022-10-15 22:36:51,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 22:36:51,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 22:36:52,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat