/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/loop-zilu/benchmark25_linear.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-6253b08 [2021-05-06 01:06:39,512 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-06 01:06:39,513 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-06 01:06:39,535 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-05-06 01:06:39,536 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-05-06 01:06:39,538 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-05-06 01:06:39,540 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-05-06 01:06:39,544 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-05-06 01:06:39,545 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-05-06 01:06:39,549 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-05-06 01:06:39,549 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-05-06 01:06:39,550 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-05-06 01:06:39,550 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-06 01:06:39,552 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-06 01:06:39,553 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-06 01:06:39,554 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-06 01:06:39,555 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-06 01:06:39,556 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-06 01:06:39,558 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-06 01:06:39,561 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-06 01:06:39,562 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-06 01:06:39,564 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-06 01:06:39,565 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-06 01:06:39,565 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-06 01:06:39,566 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-05-06 01:06:39,567 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-05-06 01:06:39,567 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-05-06 01:06:39,567 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-05-06 01:06:39,567 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-05-06 01:06:39,568 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-05-06 01:06:39,568 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-05-06 01:06:39,568 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-05-06 01:06:39,569 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-05-06 01:06:39,569 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-05-06 01:06:39,570 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-05-06 01:06:39,570 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-05-06 01:06:39,570 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-05-06 01:06:39,571 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-05-06 01:06:39,571 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-06 01:06:39,571 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-06 01:06:39,572 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-06 01:06:39,572 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 [2021-05-06 01:06:39,594 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-06 01:06:39,595 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-06 01:06:39,597 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-05-06 01:06:39,597 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-05-06 01:06:39,597 INFO L138 SettingsManager]: * Use SBE=true [2021-05-06 01:06:39,597 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-06 01:06:39,597 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-06 01:06:39,597 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-06 01:06:39,597 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-06 01:06:39,597 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-06 01:06:39,598 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-06 01:06:39,598 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-06 01:06:39,598 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-06 01:06:39,598 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-06 01:06:39,598 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-06 01:06:39,598 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-06 01:06:39,599 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-06 01:06:39,599 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-06 01:06:39,599 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-06 01:06:39,599 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-06 01:06:39,599 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-06 01:06:39,599 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-06 01:06:39,599 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-05-06 01:06:39,599 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-05-06 01:06:39,599 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-06 01:06:39,599 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-05-06 01:06:39,600 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-06 01:06:39,600 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-05-06 01:06:39,600 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-06 01:06:39,851 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-06 01:06:39,874 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-06 01:06:39,876 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-06 01:06:39,877 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-06 01:06:39,880 INFO L275 PluginConnector]: CDTParser initialized [2021-05-06 01:06:39,881 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-zilu/benchmark25_linear.i [2021-05-06 01:06:39,925 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ee7e4ca2/c97896e0a7b349f694d107f60c902d4b/FLAG80097f784 [2021-05-06 01:06:40,262 INFO L306 CDTParser]: Found 1 translation units. [2021-05-06 01:06:40,262 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-zilu/benchmark25_linear.i [2021-05-06 01:06:40,266 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ee7e4ca2/c97896e0a7b349f694d107f60c902d4b/FLAG80097f784 [2021-05-06 01:06:40,279 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ee7e4ca2/c97896e0a7b349f694d107f60c902d4b [2021-05-06 01:06:40,281 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-06 01:06:40,283 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-05-06 01:06:40,286 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-06 01:06:40,286 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-06 01:06:40,288 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-06 01:06:40,289 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.05 01:06:40" (1/1) ... [2021-05-06 01:06:40,289 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a7a7830 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 01:06:40, skipping insertion in model container [2021-05-06 01:06:40,290 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.05 01:06:40" (1/1) ... [2021-05-06 01:06:40,294 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-06 01:06:40,303 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-06 01:06:40,409 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-zilu/benchmark25_linear.i[868,881] [2021-05-06 01:06:40,416 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-06 01:06:40,422 INFO L203 MainTranslator]: Completed pre-run [2021-05-06 01:06:40,432 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-zilu/benchmark25_linear.i[868,881] [2021-05-06 01:06:40,434 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-06 01:06:40,444 INFO L208 MainTranslator]: Completed translation [2021-05-06 01:06:40,445 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 01:06:40 WrapperNode [2021-05-06 01:06:40,445 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-06 01:06:40,446 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-06 01:06:40,446 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-06 01:06:40,447 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-06 01:06:40,479 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 01:06:40" (1/1) ... [2021-05-06 01:06:40,479 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 01:06:40" (1/1) ... [2021-05-06 01:06:40,483 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 01:06:40" (1/1) ... [2021-05-06 01:06:40,483 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 01:06:40" (1/1) ... [2021-05-06 01:06:40,487 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 01:06:40" (1/1) ... [2021-05-06 01:06:40,490 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 01:06:40" (1/1) ... [2021-05-06 01:06:40,493 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 01:06:40" (1/1) ... [2021-05-06 01:06:40,494 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-06 01:06:40,495 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-06 01:06:40,495 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-06 01:06:40,496 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-06 01:06:40,496 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 01:06:40" (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 [2021-05-06 01:06:40,556 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-06 01:06:40,556 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-06 01:06:40,557 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-06 01:06:40,557 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-06 01:06:40,557 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-06 01:06:40,557 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-06 01:06:40,557 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-05-06 01:06:40,557 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-05-06 01:06:40,557 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-06 01:06:40,558 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-06 01:06:40,558 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-05-06 01:06:40,558 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2021-05-06 01:06:40,558 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-06 01:06:40,558 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-06 01:06:40,559 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-06 01:06:40,559 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-06 01:06:40,559 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-06 01:06:40,559 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-06 01:06:40,559 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-06 01:06:40,559 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-06 01:06:40,728 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-06 01:06:40,728 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-05-06 01:06:40,729 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 01:06:40 BoogieIcfgContainer [2021-05-06 01:06:40,729 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-06 01:06:40,730 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-06 01:06:40,730 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-06 01:06:40,732 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-06 01:06:40,732 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.05 01:06:40" (1/3) ... [2021-05-06 01:06:40,732 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50c04d10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.05 01:06:40, skipping insertion in model container [2021-05-06 01:06:40,732 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 01:06:40" (2/3) ... [2021-05-06 01:06:40,733 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50c04d10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.05 01:06:40, skipping insertion in model container [2021-05-06 01:06:40,733 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 01:06:40" (3/3) ... [2021-05-06 01:06:40,733 INFO L111 eAbstractionObserver]: Analyzing ICFG benchmark25_linear.i [2021-05-06 01:06:40,737 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-05-06 01:06:40,739 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-06 01:06:40,749 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-06 01:06:40,763 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-06 01:06:40,763 INFO L377 AbstractCegarLoop]: Hoare is true [2021-05-06 01:06:40,763 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-05-06 01:06:40,763 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-06 01:06:40,763 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-06 01:06:40,763 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-06 01:06:40,763 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-06 01:06:40,763 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-06 01:06:40,772 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-06 01:06:40,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-05-06 01:06:40,774 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 01:06:40,775 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 01:06:40,775 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 01:06:40,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 01:06:40,778 INFO L82 PathProgramCache]: Analyzing trace with hash -304977768, now seen corresponding path program 1 times [2021-05-06 01:06:40,783 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 01:06:40,783 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10164560] [2021-05-06 01:06:40,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 01:06:40,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 01:06:40,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 01:06:40,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 01:06:40,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 01:06:40,923 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 01:06:40,923 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10164560] [2021-05-06 01:06:40,924 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10164560] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 01:06:40,924 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 01:06:40,924 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-05-06 01:06:40,924 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137793662] [2021-05-06 01:06:40,927 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-05-06 01:06:40,927 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 01:06:40,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-05-06 01:06:40,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-05-06 01:06:40,935 INFO L87 Difference]: Start difference. First operand has 20 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 01:06:41,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 01:06:41,005 INFO L93 Difference]: Finished difference Result 33 states and 39 transitions. [2021-05-06 01:06:41,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-05-06 01:06:41,006 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-05-06 01:06:41,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 01:06:41,009 INFO L225 Difference]: With dead ends: 33 [2021-05-06 01:06:41,009 INFO L226 Difference]: Without dead ends: 14 [2021-05-06 01:06:41,011 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 44.3ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-05-06 01:06:41,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-05-06 01:06:41,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-05-06 01:06:41,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 states have internal predecessors, (10), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 01:06:41,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2021-05-06 01:06:41,031 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 12 [2021-05-06 01:06:41,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 01:06:41,031 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2021-05-06 01:06:41,032 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 01:06:41,032 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2021-05-06 01:06:41,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-05-06 01:06:41,032 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 01:06:41,032 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 01:06:41,032 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-06 01:06:41,032 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 01:06:41,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 01:06:41,033 INFO L82 PathProgramCache]: Analyzing trace with hash -828987386, now seen corresponding path program 1 times [2021-05-06 01:06:41,033 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 01:06:41,033 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79214844] [2021-05-06 01:06:41,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 01:06:41,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 01:06:41,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 01:06:41,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 01:06:41,089 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 01:06:41,089 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 01:06:41,089 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79214844] [2021-05-06 01:06:41,090 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79214844] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 01:06:41,090 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [238007096] [2021-05-06 01:06:41,090 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 [2021-05-06 01:06:41,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 01:06:41,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 3 conjunts are in the unsatisfiable core [2021-05-06 01:06:41,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 01:06:41,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 01:06:41,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 01:06:41,205 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 01:06:41,205 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [238007096] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 01:06:41,205 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 01:06:41,205 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 5 [2021-05-06 01:06:41,206 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224864093] [2021-05-06 01:06:41,206 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-05-06 01:06:41,206 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 01:06:41,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-05-06 01:06:41,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-05-06 01:06:41,207 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 01:06:41,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 01:06:41,262 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2021-05-06 01:06:41,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-05-06 01:06:41,262 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2021-05-06 01:06:41,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 01:06:41,263 INFO L225 Difference]: With dead ends: 20 [2021-05-06 01:06:41,263 INFO L226 Difference]: Without dead ends: 15 [2021-05-06 01:06:41,264 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 56.1ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-05-06 01:06:41,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-05-06 01:06:41,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-05-06 01:06:41,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 01:06:41,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2021-05-06 01:06:41,268 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 13 [2021-05-06 01:06:41,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 01:06:41,268 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2021-05-06 01:06:41,268 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 01:06:41,268 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2021-05-06 01:06:41,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-05-06 01:06:41,268 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 01:06:41,268 INFO L523 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 01:06:41,488 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-05-06 01:06:41,488 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 01:06:41,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 01:06:41,489 INFO L82 PathProgramCache]: Analyzing trace with hash 106583640, now seen corresponding path program 2 times [2021-05-06 01:06:41,489 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 01:06:41,489 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031148820] [2021-05-06 01:06:41,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 01:06:41,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 01:06:41,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 01:06:41,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 01:06:41,617 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-05-06 01:06:41,618 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 01:06:41,618 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031148820] [2021-05-06 01:06:41,618 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031148820] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 01:06:41,618 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 01:06:41,618 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-06 01:06:41,618 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858310370] [2021-05-06 01:06:41,618 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-06 01:06:41,618 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 01:06:41,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-06 01:06:41,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-05-06 01:06:41,619 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 01:06:41,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 01:06:41,726 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2021-05-06 01:06:41,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-05-06 01:06:41,727 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2021-05-06 01:06:41,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 01:06:41,727 INFO L225 Difference]: With dead ends: 15 [2021-05-06 01:06:41,727 INFO L226 Difference]: Without dead ends: 0 [2021-05-06 01:06:41,729 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 108.3ms TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-05-06 01:06:41,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-05-06 01:06:41,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-05-06 01:06:41,729 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) [2021-05-06 01:06:41,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-05-06 01:06:41,730 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2021-05-06 01:06:41,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 01:06:41,730 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-05-06 01:06:41,730 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 01:06:41,730 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-05-06 01:06:41,730 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-06 01:06:41,731 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-05-06 01:06:41,732 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-05-06 01:06:41,825 INFO L198 CegarLoopUtils]: For program point reach_errorEXIT(line 11) no Hoare annotation was computed. [2021-05-06 01:06:41,826 INFO L198 CegarLoopUtils]: For program point reach_errorENTRY(line 11) no Hoare annotation was computed. [2021-05-06 01:06:41,826 INFO L198 CegarLoopUtils]: For program point L11-1(line 11) no Hoare annotation was computed. [2021-05-06 01:06:41,826 INFO L198 CegarLoopUtils]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2021-05-06 01:06:41,826 INFO L194 CegarLoopUtils]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string0.offset| |old(#t~string0.offset)|) (= |old(#length)| |#length|) (= |#t~string1.base| |old(#t~string1.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string0.base| |old(#t~string0.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|) (= |#t~string1.offset| |old(#t~string1.offset)|)) [2021-05-06 01:06:41,827 INFO L198 CegarLoopUtils]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2021-05-06 01:06:41,827 INFO L198 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-05-06 01:06:41,827 INFO L201 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-05-06 01:06:41,827 INFO L201 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-05-06 01:06:41,827 INFO L198 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-05-06 01:06:41,827 INFO L201 CegarLoopUtils]: At program point mainENTRY(lines 19 27) the Hoare annotation is: true [2021-05-06 01:06:41,827 INFO L198 CegarLoopUtils]: For program point L25(line 25) no Hoare annotation was computed. [2021-05-06 01:06:41,827 INFO L198 CegarLoopUtils]: For program point mainEXIT(lines 19 27) no Hoare annotation was computed. [2021-05-06 01:06:41,827 INFO L198 CegarLoopUtils]: For program point L21(line 21) no Hoare annotation was computed. [2021-05-06 01:06:41,827 INFO L194 CegarLoopUtils]: At program point L22-2(lines 22 24) the Hoare annotation is: (<= main_~x~0 10) [2021-05-06 01:06:41,828 INFO L194 CegarLoopUtils]: At program point L22-3(lines 22 24) the Hoare annotation is: (and (< 9 main_~x~0) (<= main_~x~0 10)) [2021-05-06 01:06:41,828 INFO L198 CegarLoopUtils]: For program point mainFINAL(lines 19 27) no Hoare annotation was computed. [2021-05-06 01:06:41,828 INFO L198 CegarLoopUtils]: For program point L16(line 16) no Hoare annotation was computed. [2021-05-06 01:06:41,828 INFO L198 CegarLoopUtils]: For program point L15(lines 15 17) no Hoare annotation was computed. [2021-05-06 01:06:41,828 INFO L201 CegarLoopUtils]: At program point __VERIFIER_assertENTRY(lines 14 18) the Hoare annotation is: true [2021-05-06 01:06:41,828 INFO L198 CegarLoopUtils]: For program point L15-2(lines 14 18) no Hoare annotation was computed. [2021-05-06 01:06:41,828 INFO L198 CegarLoopUtils]: For program point __VERIFIER_assertEXIT(lines 14 18) no Hoare annotation was computed. [2021-05-06 01:06:41,828 INFO L198 CegarLoopUtils]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 16) no Hoare annotation was computed. [2021-05-06 01:06:41,837 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.05 01:06:41 BoogieIcfgContainer [2021-05-06 01:06:41,838 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-06 01:06:41,838 INFO L168 Benchmark]: Toolchain (without parser) took 1554.91 ms. Allocated memory is still 191.9 MB. Free memory was 156.8 MB in the beginning and 107.3 MB in the end (delta: 49.5 MB). Peak memory consumption was 50.4 MB. Max. memory is 8.0 GB. [2021-05-06 01:06:41,838 INFO L168 Benchmark]: CDTParser took 0.09 ms. Allocated memory is still 191.9 MB. Free memory is still 173.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-06 01:06:41,840 INFO L168 Benchmark]: CACSL2BoogieTranslator took 159.32 ms. Allocated memory is still 191.9 MB. Free memory was 156.6 MB in the beginning and 147.3 MB in the end (delta: 9.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB. [2021-05-06 01:06:41,840 INFO L168 Benchmark]: Boogie Preprocessor took 48.55 ms. Allocated memory is still 191.9 MB. Free memory was 147.3 MB in the beginning and 174.7 MB in the end (delta: -27.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2021-05-06 01:06:41,841 INFO L168 Benchmark]: RCFGBuilder took 233.81 ms. Allocated memory is still 191.9 MB. Free memory was 174.7 MB in the beginning and 162.2 MB in the end (delta: 12.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-05-06 01:06:41,844 INFO L168 Benchmark]: TraceAbstraction took 1107.65 ms. Allocated memory is still 191.9 MB. Free memory was 161.6 MB in the beginning and 107.3 MB in the end (delta: 54.3 MB). Peak memory consumption was 54.7 MB. Max. memory is 8.0 GB. [2021-05-06 01:06:41,846 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09 ms. Allocated memory is still 191.9 MB. Free memory is still 173.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 159.32 ms. Allocated memory is still 191.9 MB. Free memory was 156.6 MB in the beginning and 147.3 MB in the end (delta: 9.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 48.55 ms. Allocated memory is still 191.9 MB. Free memory was 147.3 MB in the beginning and 174.7 MB in the end (delta: -27.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 233.81 ms. Allocated memory is still 191.9 MB. Free memory was 174.7 MB in the beginning and 162.2 MB in the end (delta: 12.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1107.65 ms. Allocated memory is still 191.9 MB. Free memory was 161.6 MB in the beginning and 107.3 MB in the end (delta: 54.3 MB). Peak memory consumption was 54.7 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 16]: 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 5 procedures, 23 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 970.0ms, OverallIterations: 3, TraceHistogramMax: 2, EmptinessCheckTime: 5.8ms, AutomataDifference: 250.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 93.8ms, InitialAbstractionConstructionTime: 6.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 36 SDtfs, 25 SDslu, 38 SDs, 0 SdLazy, 55 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 58.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 38 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 208.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=0, InterpolantAutomatonStates: 16, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 16.9ms AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 7 LocationsWithAnnotation, 9 PreInvPairs, 12 NumberOfFragments, 39 HoareAnnotationTreeSize, 9 FomulaSimplifications, 65 FormulaSimplificationTreeSizeReduction, 38.1ms HoareSimplificationTime, 7 FomulaSimplificationsInter, 105 FormulaSimplificationTreeSizeReductionInter, 50.5ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 23.0ms SsaConstructionTime, 61.5ms SatisfiabilityAnalysisTime, 279.5ms InterpolantComputationTime, 52 NumberOfCodeBlocks, 52 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 48 ConstructedInterpolants, 0 QuantifiedInterpolants, 150 SizeOfPredicates, 0 NumberOfNonLiveVariables, 77 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 3/5 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: 22]: Loop Invariant Derived loop invariant: x <= 10 RESULT: Ultimate proved your program to be correct! Received shutdown request...