/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/nla-digbench-scaling/lcm2_valuebound1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-c225d54 [2021-05-02 16:08:21,449 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-02 16:08:21,451 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-02 16:08:21,482 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-05-02 16:08:21,495 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-02 16:08:21,496 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-02 16:08:21,496 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-02 16:08:21,497 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-02 16:08:21,497 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-02 16:08:21,498 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-02 16:08:21,499 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-02 16:08:21,500 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-02 16:08:21,501 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-02 16:08:21,507 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-02 16:08:21,508 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-02 16:08:21,512 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-02 16:08:21,513 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-02 16:08:21,518 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-02 16:08:21,519 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-02 16:08:21,519 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-02 16:08:21,520 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2021-05-02 16:08:21,547 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-02 16:08:21,547 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-02 16:08:21,550 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-05-02 16:08:21,550 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-05-02 16:08:21,550 INFO L138 SettingsManager]: * Use SBE=true [2021-05-02 16:08:21,550 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-02 16:08:21,550 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-02 16:08:21,550 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-02 16:08:21,550 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-02 16:08:21,551 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-02 16:08:21,551 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-02 16:08:21,551 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-02 16:08:21,551 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-02 16:08:21,551 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-02 16:08:21,551 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-02 16:08:21,552 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-02 16:08:21,552 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-02 16:08:21,552 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-02 16:08:21,552 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-02 16:08:21,552 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-02 16:08:21,552 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-02 16:08:21,552 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-02 16:08:21,552 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-05-02 16:08:21,552 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-05-02 16:08:21,552 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-02 16:08:21,553 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-05-02 16:08:21,553 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-02 16:08:21,553 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-05-02 16:08:21,553 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-02 16:08:21,783 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-02 16:08:21,797 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-02 16:08:21,799 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-02 16:08:21,800 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-02 16:08:21,801 INFO L275 PluginConnector]: CDTParser initialized [2021-05-02 16:08:21,801 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/lcm2_valuebound1.c [2021-05-02 16:08:21,849 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4556b5568/7d319bceb45d46418dfed4ef2387eb65/FLAG199f52964 [2021-05-02 16:08:22,195 INFO L306 CDTParser]: Found 1 translation units. [2021-05-02 16:08:22,195 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/lcm2_valuebound1.c [2021-05-02 16:08:22,203 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4556b5568/7d319bceb45d46418dfed4ef2387eb65/FLAG199f52964 [2021-05-02 16:08:22,211 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4556b5568/7d319bceb45d46418dfed4ef2387eb65 [2021-05-02 16:08:22,213 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-02 16:08:22,215 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-05-02 16:08:22,218 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-02 16:08:22,218 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-02 16:08:22,221 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-02 16:08:22,221 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 04:08:22" (1/1) ... [2021-05-02 16:08:22,222 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d84276f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 04:08:22, skipping insertion in model container [2021-05-02 16:08:22,222 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 04:08:22" (1/1) ... [2021-05-02 16:08:22,226 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-02 16:08:22,238 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-02 16:08:22,321 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/lcm2_valuebound1.c[545,558] [2021-05-02 16:08:22,329 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 16:08:22,334 INFO L203 MainTranslator]: Completed pre-run [2021-05-02 16:08:22,341 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/lcm2_valuebound1.c[545,558] [2021-05-02 16:08:22,345 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 16:08:22,353 INFO L208 MainTranslator]: Completed translation [2021-05-02 16:08:22,354 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 04:08:22 WrapperNode [2021-05-02 16:08:22,354 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-02 16:08:22,355 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-02 16:08:22,355 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-02 16:08:22,355 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-02 16:08:22,361 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 04:08:22" (1/1) ... [2021-05-02 16:08:22,362 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 04:08:22" (1/1) ... [2021-05-02 16:08:22,394 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 04:08:22" (1/1) ... [2021-05-02 16:08:22,395 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 04:08:22" (1/1) ... [2021-05-02 16:08:22,398 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 04:08:22" (1/1) ... [2021-05-02 16:08:22,405 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 04:08:22" (1/1) ... [2021-05-02 16:08:22,409 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 04:08:22" (1/1) ... [2021-05-02 16:08:22,410 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-02 16:08:22,411 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-02 16:08:22,411 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-02 16:08:22,411 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-02 16:08:22,411 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 04:08:22" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-02 16:08:22,461 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-02 16:08:22,461 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-02 16:08:22,461 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-02 16:08:22,461 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-05-02 16:08:22,461 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-02 16:08:22,461 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-02 16:08:22,461 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-02 16:08:22,462 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-02 16:08:22,462 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-02 16:08:22,462 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-02 16:08:22,462 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_unsigned_int [2021-05-02 16:08:22,462 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-05-02 16:08:22,462 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-02 16:08:22,462 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-02 16:08:22,462 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-02 16:08:22,462 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-02 16:08:22,462 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-02 16:08:22,462 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-02 16:08:22,462 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-02 16:08:22,462 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-02 16:08:22,676 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-02 16:08:22,676 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-05-02 16:08:22,677 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 04:08:22 BoogieIcfgContainer [2021-05-02 16:08:22,677 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-02 16:08:22,678 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-02 16:08:22,678 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-02 16:08:22,689 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-02 16:08:22,690 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.05 04:08:22" (1/3) ... [2021-05-02 16:08:22,690 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@691ad87b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 04:08:22, skipping insertion in model container [2021-05-02 16:08:22,690 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 04:08:22" (2/3) ... [2021-05-02 16:08:22,690 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@691ad87b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 04:08:22, skipping insertion in model container [2021-05-02 16:08:22,690 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 04:08:22" (3/3) ... [2021-05-02 16:08:22,691 INFO L111 eAbstractionObserver]: Analyzing ICFG lcm2_valuebound1.c [2021-05-02 16:08:22,695 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-05-02 16:08:22,697 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-02 16:08:22,707 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-02 16:08:22,721 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-02 16:08:22,721 INFO L377 AbstractCegarLoop]: Hoare is true [2021-05-02 16:08:22,721 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-05-02 16:08:22,722 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-02 16:08:22,722 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-02 16:08:22,722 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-02 16:08:22,722 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-02 16:08:22,722 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-02 16:08:22,733 INFO L276 IsEmpty]: Start isEmpty. Operand has 34 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 19 states have internal predecessors, (25), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2021-05-02 16:08:22,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-05-02 16:08:22,737 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 16:08:22,738 INFO L523 BasicCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 16:08:22,738 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 16:08:22,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 16:08:22,741 INFO L82 PathProgramCache]: Analyzing trace with hash 1830914611, now seen corresponding path program 1 times [2021-05-02 16:08:22,746 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 16:08:22,746 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709606764] [2021-05-02 16:08:22,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 16:08:22,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 16:08:22,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 16:08:22,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 16:08:22,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-05-02 16:08:22,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 16:08:22,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-05-02 16:08:22,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 16:08:22,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-05-02 16:08:22,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 16:08:22,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-05-02 16:08:22,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 16:08:22,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-05-02 16:08:22,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 16:08:22,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-05-02 16:08:22,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 16:08:22,956 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2021-05-02 16:08:22,956 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 16:08:22,956 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709606764] [2021-05-02 16:08:22,957 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709606764] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 16:08:22,957 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 16:08:22,957 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-02 16:08:22,957 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834010590] [2021-05-02 16:08:22,960 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-02 16:08:22,960 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 16:08:22,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-02 16:08:22,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 16:08:22,969 INFO L87 Difference]: Start difference. First operand has 34 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 19 states have internal predecessors, (25), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-05-02 16:08:23,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 16:08:23,117 INFO L93 Difference]: Finished difference Result 61 states and 90 transitions. [2021-05-02 16:08:23,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-02 16:08:23,119 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 43 [2021-05-02 16:08:23,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 16:08:23,124 INFO L225 Difference]: With dead ends: 61 [2021-05-02 16:08:23,124 INFO L226 Difference]: Without dead ends: 29 [2021-05-02 16:08:23,126 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 24.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 16:08:23,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-05-02 16:08:23,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2021-05-02 16:08:23,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 15 states have (on average 1.2) internal successors, (18), 16 states have internal predecessors, (18), 10 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-05-02 16:08:23,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 36 transitions. [2021-05-02 16:08:23,169 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 36 transitions. Word has length 43 [2021-05-02 16:08:23,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 16:08:23,169 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 36 transitions. [2021-05-02 16:08:23,169 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-05-02 16:08:23,169 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 36 transitions. [2021-05-02 16:08:23,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-05-02 16:08:23,171 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 16:08:23,171 INFO L523 BasicCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 16:08:23,171 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-02 16:08:23,171 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 16:08:23,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 16:08:23,172 INFO L82 PathProgramCache]: Analyzing trace with hash 206107499, now seen corresponding path program 1 times [2021-05-02 16:08:23,172 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 16:08:23,172 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790721386] [2021-05-02 16:08:23,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 16:08:23,230 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 16:08:23,231 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1266967864] [2021-05-02 16:08:23,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 16:08:23,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 16:08:23,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 19 conjunts are in the unsatisfiable core [2021-05-02 16:08:23,384 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 16:08:23,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:08:23,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:08:23,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:08:23,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:08:23,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:08:23,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:08:23,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:08:23,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:08:23,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:08:23,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:08:23,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:08:23,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:08:23,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:08:23,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:08:23,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:08:23,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:08:23,699 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-05-02 16:08:23,700 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 16:08:23,700 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790721386] [2021-05-02 16:08:23,700 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 16:08:23,700 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1266967864] [2021-05-02 16:08:23,700 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1266967864] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 16:08:23,700 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 16:08:23,700 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-05-02 16:08:23,700 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952852646] [2021-05-02 16:08:23,701 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-02 16:08:23,701 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 16:08:23,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-02 16:08:23,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-05-02 16:08:23,702 INFO L87 Difference]: Start difference. First operand 29 states and 36 transitions. Second operand has 8 states, 8 states have (on average 1.875) internal successors, (15), 7 states have internal predecessors, (15), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-05-02 16:08:23,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 16:08:23,837 INFO L93 Difference]: Finished difference Result 42 states and 51 transitions. [2021-05-02 16:08:23,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-02 16:08:23,839 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 7 states have internal predecessors, (15), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 43 [2021-05-02 16:08:23,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 16:08:23,841 INFO L225 Difference]: With dead ends: 42 [2021-05-02 16:08:23,841 INFO L226 Difference]: Without dead ends: 39 [2021-05-02 16:08:23,842 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 45.3ms TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-05-02 16:08:23,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-05-02 16:08:23,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 36. [2021-05-02 16:08:23,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 20 states have (on average 1.15) internal successors, (23), 21 states have internal predecessors, (23), 11 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-05-02 16:08:23,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 43 transitions. [2021-05-02 16:08:23,849 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 43 transitions. Word has length 43 [2021-05-02 16:08:23,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 16:08:23,850 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 43 transitions. [2021-05-02 16:08:23,850 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 7 states have internal predecessors, (15), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-05-02 16:08:23,850 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 43 transitions. [2021-05-02 16:08:23,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-05-02 16:08:23,851 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 16:08:23,851 INFO L523 BasicCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 16:08:24,065 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-05-02 16:08:24,067 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 16:08:24,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 16:08:24,067 INFO L82 PathProgramCache]: Analyzing trace with hash 1555618915, now seen corresponding path program 1 times [2021-05-02 16:08:24,067 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 16:08:24,068 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257569830] [2021-05-02 16:08:24,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 16:08:24,085 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 16:08:24,085 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [397509659] [2021-05-02 16:08:24,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 16:08:24,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 16:08:24,131 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 19 conjunts are in the unsatisfiable core [2021-05-02 16:08:24,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 16:08:24,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:08:24,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:08:24,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:08:24,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:08:24,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:08:24,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:08:24,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:08:24,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:08:24,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:08:24,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:08:24,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:08:24,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:08:24,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:08:24,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:08:24,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:08:24,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:08:24,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:08:24,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:08:24,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:08:24,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:08:24,339 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 10 proven. 18 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-05-02 16:08:24,339 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 16:08:24,339 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257569830] [2021-05-02 16:08:24,339 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 16:08:24,340 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [397509659] [2021-05-02 16:08:24,340 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [397509659] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 16:08:24,340 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 16:08:24,340 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-05-02 16:08:24,340 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412004944] [2021-05-02 16:08:24,341 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-02 16:08:24,341 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 16:08:24,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-02 16:08:24,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-05-02 16:08:24,342 INFO L87 Difference]: Start difference. First operand 36 states and 43 transitions. Second operand has 7 states, 7 states have (on average 3.0) internal successors, (21), 6 states have internal predecessors, (21), 5 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2021-05-02 16:08:24,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 16:08:24,403 INFO L93 Difference]: Finished difference Result 50 states and 60 transitions. [2021-05-02 16:08:24,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-02 16:08:24,404 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 6 states have internal predecessors, (21), 5 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 51 [2021-05-02 16:08:24,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 16:08:24,405 INFO L225 Difference]: With dead ends: 50 [2021-05-02 16:08:24,405 INFO L226 Difference]: Without dead ends: 39 [2021-05-02 16:08:24,405 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 30.7ms TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-05-02 16:08:24,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-05-02 16:08:24,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 37. [2021-05-02 16:08:24,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 22 states have internal predecessors, (24), 11 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-05-02 16:08:24,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 44 transitions. [2021-05-02 16:08:24,410 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 44 transitions. Word has length 51 [2021-05-02 16:08:24,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 16:08:24,411 INFO L480 AbstractCegarLoop]: Abstraction has 37 states and 44 transitions. [2021-05-02 16:08:24,411 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 6 states have internal predecessors, (21), 5 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2021-05-02 16:08:24,411 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 44 transitions. [2021-05-02 16:08:24,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-05-02 16:08:24,412 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 16:08:24,412 INFO L523 BasicCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 16:08:24,629 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 16:08:24,629 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 16:08:24,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 16:08:24,630 INFO L82 PathProgramCache]: Analyzing trace with hash 1612877217, now seen corresponding path program 1 times [2021-05-02 16:08:24,630 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 16:08:24,630 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632388135] [2021-05-02 16:08:24,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 16:08:24,643 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 16:08:24,644 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1583845845] [2021-05-02 16:08:24,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 16:08:24,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 16:08:24,683 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 20 conjunts are in the unsatisfiable core [2021-05-02 16:08:24,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 16:08:24,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:08:24,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:08:24,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:08:24,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:08:24,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:08:24,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:08:24,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:08:24,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:08:24,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:08:24,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:08:24,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:08:24,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:08:24,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:08:24,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:08:24,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:08:24,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:08:24,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:08:24,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:08:24,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:08:24,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:08:24,892 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 10 proven. 18 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-05-02 16:08:24,893 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 16:08:24,893 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632388135] [2021-05-02 16:08:24,894 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 16:08:24,894 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1583845845] [2021-05-02 16:08:24,894 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1583845845] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 16:08:24,897 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 16:08:24,897 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-05-02 16:08:24,898 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489661169] [2021-05-02 16:08:24,899 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-02 16:08:24,899 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 16:08:24,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-02 16:08:24,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-05-02 16:08:24,900 INFO L87 Difference]: Start difference. First operand 37 states and 44 transitions. Second operand has 8 states, 7 states have (on average 3.0) internal successors, (21), 6 states have internal predecessors, (21), 5 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2021-05-02 16:08:24,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 16:08:24,993 INFO L93 Difference]: Finished difference Result 39 states and 46 transitions. [2021-05-02 16:08:24,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-02 16:08:24,994 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.0) internal successors, (21), 6 states have internal predecessors, (21), 5 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 51 [2021-05-02 16:08:24,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 16:08:24,995 INFO L225 Difference]: With dead ends: 39 [2021-05-02 16:08:24,995 INFO L226 Difference]: Without dead ends: 0 [2021-05-02 16:08:24,997 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 57.9ms TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-05-02 16:08:24,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-05-02 16:08:24,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-05-02 16:08:24,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-02 16:08:24,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-05-02 16:08:24,997 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 51 [2021-05-02 16:08:24,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 16:08:24,998 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-05-02 16:08:24,998 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.0) internal successors, (21), 6 states have internal predecessors, (21), 5 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2021-05-02 16:08:24,998 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-05-02 16:08:24,998 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-02 16:08:25,210 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 16:08:25,212 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-05-02 16:08:25,487 INFO L198 CegarLoopUtils]: For program point reach_errorEXIT(line 5) no Hoare annotation was computed. [2021-05-02 16:08:25,487 INFO L198 CegarLoopUtils]: For program point reach_errorENTRY(line 5) no Hoare annotation was computed. [2021-05-02 16:08:25,487 INFO L198 CegarLoopUtils]: For program point reach_errorFINAL(line 5) no Hoare annotation was computed. [2021-05-02 16:08:25,487 INFO L198 CegarLoopUtils]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2021-05-02 16:08:25,487 INFO L194 CegarLoopUtils]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string5.base| |old(#t~string5.base)|) (= |#t~string5.offset| |old(#t~string5.offset)|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= |#t~string4.base| |old(#t~string4.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2021-05-02 16:08:25,487 INFO L198 CegarLoopUtils]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2021-05-02 16:08:25,487 INFO L198 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-05-02 16:08:25,487 INFO L201 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-05-02 16:08:25,487 INFO L201 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-05-02 16:08:25,487 INFO L198 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-05-02 16:08:25,487 INFO L201 CegarLoopUtils]: At program point assume_abort_if_notENTRY(lines 8 10) the Hoare annotation is: true [2021-05-02 16:08:25,487 INFO L198 CegarLoopUtils]: For program point L9(line 9) no Hoare annotation was computed. [2021-05-02 16:08:25,488 INFO L198 CegarLoopUtils]: For program point L9-2(lines 8 10) no Hoare annotation was computed. [2021-05-02 16:08:25,488 INFO L198 CegarLoopUtils]: For program point assume_abort_if_notEXIT(lines 8 10) no Hoare annotation was computed. [2021-05-02 16:08:25,488 INFO L194 CegarLoopUtils]: At program point L29(line 29) the Hoare annotation is: (let ((.cse0 (mod main_~a~0 4294967296)) (.cse1 (mod main_~b~0 4294967296))) (and (<= 1 .cse0) (<= 1 .cse1) (<= .cse0 1) (<= .cse1 1))) [2021-05-02 16:08:25,488 INFO L194 CegarLoopUtils]: At program point L27(line 27) the Hoare annotation is: (let ((.cse0 (mod main_~a~0 4294967296)) (.cse1 (mod main_~b~0 4294967296))) (and (<= 1 .cse0) (<= 1 .cse1) (<= .cse0 1) (<= .cse1 1))) [2021-05-02 16:08:25,488 INFO L194 CegarLoopUtils]: At program point L25(line 25) the Hoare annotation is: (<= (mod main_~a~0 4294967296) 1) [2021-05-02 16:08:25,488 INFO L198 CegarLoopUtils]: For program point mainEXIT(lines 19 57) no Hoare annotation was computed. [2021-05-02 16:08:25,488 INFO L194 CegarLoopUtils]: At program point L25-1(line 25) the Hoare annotation is: (and (<= (mod main_~a~0 4294967296) 1) (<= (mod main_~b~0 4294967296) 1)) [2021-05-02 16:08:25,488 INFO L201 CegarLoopUtils]: At program point L23(line 23) the Hoare annotation is: true [2021-05-02 16:08:25,488 INFO L198 CegarLoopUtils]: For program point L23-1(line 23) no Hoare annotation was computed. [2021-05-02 16:08:25,488 INFO L198 CegarLoopUtils]: For program point L52(line 52) no Hoare annotation was computed. [2021-05-02 16:08:25,488 INFO L198 CegarLoopUtils]: For program point mainFINAL(lines 19 57) no Hoare annotation was computed. [2021-05-02 16:08:25,488 INFO L194 CegarLoopUtils]: At program point L38(line 38) the Hoare annotation is: (let ((.cse0 (mod main_~a~0 4294967296))) (and (<= (mod main_~y~0 4294967296) 1) (= main_~a~0 main_~v~0) (= main_~b~0 main_~u~0) (= main_~a~0 main_~x~0) (= main_~b~0 main_~y~0) (<= 1 .cse0) (<= 1 (mod main_~b~0 4294967296)) (<= .cse0 1))) [2021-05-02 16:08:25,488 INFO L198 CegarLoopUtils]: For program point L38-1(lines 37 50) no Hoare annotation was computed. [2021-05-02 16:08:25,488 INFO L198 CegarLoopUtils]: For program point L30(line 30) no Hoare annotation was computed. [2021-05-02 16:08:25,489 INFO L201 CegarLoopUtils]: At program point mainENTRY(lines 19 57) the Hoare annotation is: true [2021-05-02 16:08:25,489 INFO L194 CegarLoopUtils]: At program point L26(line 26) the Hoare annotation is: (let ((.cse0 (mod main_~a~0 4294967296))) (and (<= 1 .cse0) (<= .cse0 1) (<= (mod main_~b~0 4294967296) 1))) [2021-05-02 16:08:25,489 INFO L198 CegarLoopUtils]: For program point L43(lines 43 49) no Hoare annotation was computed. [2021-05-02 16:08:25,489 INFO L194 CegarLoopUtils]: At program point L43-2(lines 37 50) the Hoare annotation is: (let ((.cse0 (mod main_~a~0 4294967296))) (and (<= (mod main_~y~0 4294967296) 1) (= main_~a~0 main_~v~0) (= main_~b~0 main_~u~0) (= main_~a~0 main_~x~0) (= main_~b~0 main_~y~0) (<= 1 .cse0) (<= 1 (mod main_~b~0 4294967296)) (<= .cse0 1))) [2021-05-02 16:08:25,489 INFO L194 CegarLoopUtils]: At program point L37-2(lines 37 50) the Hoare annotation is: (and (= main_~a~0 main_~v~0) (= main_~b~0 main_~u~0) (= main_~a~0 main_~x~0) (= main_~b~0 main_~y~0) (<= (mod main_~a~0 4294967296) 1)) [2021-05-02 16:08:25,489 INFO L201 CegarLoopUtils]: At program point __VERIFIER_assertENTRY(lines 11 17) the Hoare annotation is: true [2021-05-02 16:08:25,489 INFO L198 CegarLoopUtils]: For program point L13(lines 13 14) no Hoare annotation was computed. [2021-05-02 16:08:25,489 INFO L198 CegarLoopUtils]: For program point L12(lines 12 15) no Hoare annotation was computed. [2021-05-02 16:08:25,489 INFO L198 CegarLoopUtils]: For program point L12-2(lines 11 17) no Hoare annotation was computed. [2021-05-02 16:08:25,489 INFO L198 CegarLoopUtils]: For program point __VERIFIER_assertEXIT(lines 11 17) no Hoare annotation was computed. [2021-05-02 16:08:25,489 INFO L198 CegarLoopUtils]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-05-02 16:08:25,503 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.05 04:08:25 BoogieIcfgContainer [2021-05-02 16:08:25,503 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-02 16:08:25,504 INFO L168 Benchmark]: Toolchain (without parser) took 3289.41 ms. Allocated memory was 183.5 MB in the beginning and 220.2 MB in the end (delta: 36.7 MB). Free memory was 148.4 MB in the beginning and 197.2 MB in the end (delta: -48.8 MB). Peak memory consumption was 110.9 MB. Max. memory is 8.0 GB. [2021-05-02 16:08:25,504 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 183.5 MB. Free memory was 165.1 MB in the beginning and 165.0 MB in the end (delta: 77.5 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-05-02 16:08:25,504 INFO L168 Benchmark]: CACSL2BoogieTranslator took 136.51 ms. Allocated memory is still 183.5 MB. Free memory was 148.3 MB in the beginning and 164.3 MB in the end (delta: -16.0 MB). Peak memory consumption was 9.6 MB. Max. memory is 8.0 GB. [2021-05-02 16:08:25,504 INFO L168 Benchmark]: Boogie Preprocessor took 55.63 ms. Allocated memory is still 183.5 MB. Free memory was 164.3 MB in the beginning and 166.9 MB in the end (delta: -2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-05-02 16:08:25,504 INFO L168 Benchmark]: RCFGBuilder took 266.42 ms. Allocated memory is still 183.5 MB. Free memory was 166.9 MB in the beginning and 150.7 MB in the end (delta: 16.3 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. [2021-05-02 16:08:25,504 INFO L168 Benchmark]: TraceAbstraction took 2825.29 ms. Allocated memory was 183.5 MB in the beginning and 220.2 MB in the end (delta: 36.7 MB). Free memory was 150.7 MB in the beginning and 197.2 MB in the end (delta: -46.6 MB). Peak memory consumption was 112.8 MB. Max. memory is 8.0 GB. [2021-05-02 16:08:25,505 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 183.5 MB. Free memory was 165.1 MB in the beginning and 165.0 MB in the end (delta: 77.5 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 136.51 ms. Allocated memory is still 183.5 MB. Free memory was 148.3 MB in the beginning and 164.3 MB in the end (delta: -16.0 MB). Peak memory consumption was 9.6 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 55.63 ms. Allocated memory is still 183.5 MB. Free memory was 164.3 MB in the beginning and 166.9 MB in the end (delta: -2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 266.42 ms. Allocated memory is still 183.5 MB. Free memory was 166.9 MB in the beginning and 150.7 MB in the end (delta: 16.3 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2825.29 ms. Allocated memory was 183.5 MB in the beginning and 220.2 MB in the end (delta: 36.7 MB). Free memory was 150.7 MB in the beginning and 197.2 MB in the end (delta: -46.6 MB). Peak memory consumption was 112.8 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 37 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2491.0ms, OverallIterations: 4, TraceHistogramMax: 6, EmptinessCheckTime: 10.7ms, AutomataDifference: 466.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 275.5ms, InitialAbstractionConstructionTime: 7.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 102 SDtfs, 66 SDslu, 253 SDs, 0 SdLazy, 254 SolverSat, 28 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 243.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 171 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 158.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred in iteration=3, InterpolantAutomatonStates: 29, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 45.4ms AutomataMinimizationTime, 4 MinimizatonAttempts, 5 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 15 LocationsWithAnnotation, 32 PreInvPairs, 40 NumberOfFragments, 195 HoareAnnotationTreeSize, 32 FomulaSimplifications, 649 FormulaSimplificationTreeSizeReduction, 58.7ms HoareSimplificationTime, 15 FomulaSimplificationsInter, 448 FormulaSimplificationTreeSizeReductionInter, 208.8ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 41.5ms SsaConstructionTime, 199.8ms SatisfiabilityAnalysisTime, 851.2ms InterpolantComputationTime, 188 NumberOfCodeBlocks, 188 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 184 ConstructedInterpolants, 0 QuantifiedInterpolants, 498 SizeOfPredicates, 16 NumberOfNonLiveVariables, 515 ConjunctsInSsa, 58 ConjunctsInUnsatCore, 4 InterpolantComputations, 1 PerfectInterpolantSequences, 197/248 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 37]: Loop Invariant Derived loop invariant: ((((((y % 4294967296 <= 1 && a == v) && b == u) && a == x) && b == y) && 1 <= a % 4294967296) && 1 <= b % 4294967296) && a % 4294967296 <= 1 RESULT: Ultimate proved your program to be correct! Received shutdown request...