/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/loops/sum03-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-c225d54 [2021-05-02 11:51:49,572 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-02 11:51:49,573 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-02 11:51:49,597 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-05-02 11:51:49,597 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-05-02 11:51:49,599 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-05-02 11:51:49,602 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-05-02 11:51:49,607 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-05-02 11:51:49,609 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-05-02 11:51:49,612 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-05-02 11:51:49,613 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-05-02 11:51:49,614 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-05-02 11:51:49,614 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-02 11:51:49,615 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-02 11:51:49,616 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-02 11:51:49,617 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-02 11:51:49,619 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-02 11:51:49,620 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-02 11:51:49,621 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-02 11:51:49,625 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-02 11:51:49,626 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-02 11:51:49,627 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-02 11:51:49,629 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-02 11:51:49,630 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-02 11:51:49,635 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-05-02 11:51:49,635 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-05-02 11:51:49,635 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-05-02 11:51:49,636 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-05-02 11:51:49,636 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-05-02 11:51:49,637 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-05-02 11:51:49,637 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-05-02 11:51:49,638 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-05-02 11:51:49,639 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-05-02 11:51:49,639 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-05-02 11:51:49,640 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-05-02 11:51:49,640 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-05-02 11:51:49,640 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-05-02 11:51:49,640 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-05-02 11:51:49,641 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-02 11:51:49,641 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-02 11:51:49,641 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-02 11:51:49,645 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 11:51:49,670 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-02 11:51:49,670 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-02 11:51:49,673 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-05-02 11:51:49,673 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-05-02 11:51:49,673 INFO L138 SettingsManager]: * Use SBE=true [2021-05-02 11:51:49,673 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-02 11:51:49,673 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-02 11:51:49,673 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-02 11:51:49,673 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-02 11:51:49,674 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-02 11:51:49,674 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-02 11:51:49,674 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-02 11:51:49,674 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-02 11:51:49,674 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-02 11:51:49,674 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-02 11:51:49,675 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-02 11:51:49,675 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-02 11:51:49,675 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-02 11:51:49,675 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-02 11:51:49,675 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-02 11:51:49,675 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-02 11:51:49,675 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-02 11:51:49,676 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-05-02 11:51:49,676 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-05-02 11:51:49,676 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-02 11:51:49,676 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-05-02 11:51:49,676 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-02 11:51:49,676 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-05-02 11:51:49,676 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-02 11:51:49,915 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-02 11:51:49,930 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-02 11:51:49,932 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-02 11:51:49,933 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-02 11:51:49,934 INFO L275 PluginConnector]: CDTParser initialized [2021-05-02 11:51:49,934 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/sum03-2.i [2021-05-02 11:51:49,983 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/34cbe42cf/a45c3d0c65f24f4a8a93df563a1c958a/FLAGeae4859e3 [2021-05-02 11:51:50,305 INFO L306 CDTParser]: Found 1 translation units. [2021-05-02 11:51:50,305 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/sum03-2.i [2021-05-02 11:51:50,309 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/34cbe42cf/a45c3d0c65f24f4a8a93df563a1c958a/FLAGeae4859e3 [2021-05-02 11:51:50,741 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/34cbe42cf/a45c3d0c65f24f4a8a93df563a1c958a [2021-05-02 11:51:50,743 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-02 11:51:50,745 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-05-02 11:51:50,747 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-02 11:51:50,748 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-02 11:51:50,750 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-02 11:51:50,750 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 11:51:50" (1/1) ... [2021-05-02 11:51:50,751 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43781490 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:51:50, skipping insertion in model container [2021-05-02 11:51:50,751 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 11:51:50" (1/1) ... [2021-05-02 11:51:50,755 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-02 11:51:50,764 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-02 11:51:50,838 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/sum03-2.i[807,820] [2021-05-02 11:51:50,844 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 11:51:50,855 INFO L203 MainTranslator]: Completed pre-run [2021-05-02 11:51:50,863 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/sum03-2.i[807,820] [2021-05-02 11:51:50,866 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 11:51:50,878 INFO L208 MainTranslator]: Completed translation [2021-05-02 11:51:50,878 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:51:50 WrapperNode [2021-05-02 11:51:50,878 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-02 11:51:50,879 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-02 11:51:50,879 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-02 11:51:50,880 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-02 11:51:50,893 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:51:50" (1/1) ... [2021-05-02 11:51:50,893 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:51:50" (1/1) ... [2021-05-02 11:51:50,912 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:51:50" (1/1) ... [2021-05-02 11:51:50,912 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:51:50" (1/1) ... [2021-05-02 11:51:50,916 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:51:50" (1/1) ... [2021-05-02 11:51:50,918 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:51:50" (1/1) ... [2021-05-02 11:51:50,919 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:51:50" (1/1) ... [2021-05-02 11:51:50,920 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-02 11:51:50,920 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-02 11:51:50,920 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-02 11:51:50,921 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-02 11:51:50,921 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:51:50" (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 11:51:50,972 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-02 11:51:50,972 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-02 11:51:50,972 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-02 11:51:50,972 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-02 11:51:50,972 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-02 11:51:50,972 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-02 11:51:50,972 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-02 11:51:50,972 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-05-02 11:51:50,973 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-05-02 11:51:50,973 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-02 11:51:50,973 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-02 11:51:50,973 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-02 11:51:50,973 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2021-05-02 11:51:50,973 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-02 11:51:50,973 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-02 11:51:50,973 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-02 11:51:50,973 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-02 11:51:50,973 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-02 11:51:50,973 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-02 11:51:50,973 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-02 11:51:51,147 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-02 11:51:51,147 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-05-02 11:51:51,148 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 11:51:51 BoogieIcfgContainer [2021-05-02 11:51:51,148 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-02 11:51:51,149 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-02 11:51:51,149 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-02 11:51:51,151 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-02 11:51:51,151 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.05 11:51:50" (1/3) ... [2021-05-02 11:51:51,152 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c51ef41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 11:51:51, skipping insertion in model container [2021-05-02 11:51:51,152 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:51:50" (2/3) ... [2021-05-02 11:51:51,152 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c51ef41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 11:51:51, skipping insertion in model container [2021-05-02 11:51:51,152 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 11:51:51" (3/3) ... [2021-05-02 11:51:51,153 INFO L111 eAbstractionObserver]: Analyzing ICFG sum03-2.i [2021-05-02 11:51:51,156 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-05-02 11:51:51,159 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-02 11:51:51,169 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-02 11:51:51,192 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-02 11:51:51,192 INFO L377 AbstractCegarLoop]: Hoare is true [2021-05-02 11:51:51,192 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-05-02 11:51:51,192 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-02 11:51:51,193 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-02 11:51:51,193 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-02 11:51:51,193 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-02 11:51:51,193 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-02 11:51:51,202 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 10 states have (on average 1.4) internal successors, (14), 12 states have internal predecessors, (14), 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) [2021-05-02 11:51:51,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-05-02 11:51:51,205 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 11:51:51,205 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 11:51:51,206 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 11:51:51,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 11:51:51,209 INFO L82 PathProgramCache]: Analyzing trace with hash -107069111, now seen corresponding path program 1 times [2021-05-02 11:51:51,230 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 11:51:51,231 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146145241] [2021-05-02 11:51:51,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 11:51:51,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 11:51:51,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 11:51:51,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 11:51:51,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 11:51:51,457 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 11:51:51,457 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146145241] [2021-05-02 11:51:51,457 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146145241] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 11:51:51,457 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 11:51:51,458 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-02 11:51:51,458 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241126248] [2021-05-02 11:51:51,461 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-02 11:51:51,461 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 11:51:51,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-02 11:51:51,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-05-02 11:51:51,471 INFO L87 Difference]: Start difference. First operand has 18 states, 10 states have (on average 1.4) internal successors, (14), 12 states have internal predecessors, (14), 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 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 5 states have internal predecessors, (7), 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) [2021-05-02 11:51:51,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 11:51:51,615 INFO L93 Difference]: Finished difference Result 25 states and 33 transitions. [2021-05-02 11:51:51,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-05-02 11:51:51,616 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 5 states have internal predecessors, (7), 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 11 [2021-05-02 11:51:51,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 11:51:51,619 INFO L225 Difference]: With dead ends: 25 [2021-05-02 11:51:51,620 INFO L226 Difference]: Without dead ends: 0 [2021-05-02 11:51:51,622 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 159.9ms TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-05-02 11:51:51,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-05-02 11:51:51,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-05-02 11:51:51,635 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 11:51:51,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-05-02 11:51:51,636 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2021-05-02 11:51:51,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 11:51:51,636 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-05-02 11:51:51,636 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 5 states have internal predecessors, (7), 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) [2021-05-02 11:51:51,637 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-05-02 11:51:51,637 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-02 11:51:51,637 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-02 11:51:51,638 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-05-02 11:51:51,765 INFO L198 CegarLoopUtils]: For program point reach_errorEXIT(line 12) no Hoare annotation was computed. [2021-05-02 11:51:51,765 INFO L198 CegarLoopUtils]: For program point reach_errorENTRY(line 12) no Hoare annotation was computed. [2021-05-02 11:51:51,766 INFO L198 CegarLoopUtils]: For program point L12-1(line 12) no Hoare annotation was computed. [2021-05-02 11:51:51,766 INFO L198 CegarLoopUtils]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2021-05-02 11:51:51,766 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)|)) [2021-05-02 11:51:51,766 INFO L198 CegarLoopUtils]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2021-05-02 11:51:51,766 INFO L198 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-05-02 11:51:51,766 INFO L201 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-05-02 11:51:51,766 INFO L201 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-05-02 11:51:51,766 INFO L198 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-05-02 11:51:51,766 INFO L201 CegarLoopUtils]: At program point mainENTRY(lines 20 29) the Hoare annotation is: true [2021-05-02 11:51:51,767 INFO L194 CegarLoopUtils]: At program point L27(line 27) the Hoare annotation is: (let ((.cse2 (* 2 main_~x~0))) (let ((.cse1 (* 4294967296 (div (* main_~x~0 2) 4294967296))) (.cse0 (+ .cse2 (* 4294967296 (div main_~sn~0 4294967296))))) (and (< .cse0 (+ main_~sn~0 .cse1 1)) (<= (+ main_~sn~0 .cse1) .cse0) (<= main_~sn~0 .cse2)))) [2021-05-02 11:51:51,767 INFO L194 CegarLoopUtils]: At program point L27-1(lines 24 28) the Hoare annotation is: (let ((.cse2 (* 2 main_~x~0))) (let ((.cse1 (* 4294967296 (div (* main_~x~0 2) 4294967296))) (.cse0 (+ .cse2 (* 4294967296 (div main_~sn~0 4294967296))))) (and (< .cse0 (+ main_~sn~0 .cse1 1)) (<= (+ main_~sn~0 .cse1) .cse0) (<= main_~sn~0 .cse2)))) [2021-05-02 11:51:51,767 INFO L198 CegarLoopUtils]: For program point mainEXIT(lines 20 29) no Hoare annotation was computed. [2021-05-02 11:51:51,767 INFO L198 CegarLoopUtils]: For program point L24-2(lines 20 29) no Hoare annotation was computed. [2021-05-02 11:51:51,768 INFO L198 CegarLoopUtils]: For program point L15(line 15) no Hoare annotation was computed. [2021-05-02 11:51:51,768 INFO L201 CegarLoopUtils]: At program point __VERIFIER_assertENTRY(lines 13 18) the Hoare annotation is: true [2021-05-02 11:51:51,768 INFO L198 CegarLoopUtils]: For program point L14(lines 14 16) no Hoare annotation was computed. [2021-05-02 11:51:51,768 INFO L198 CegarLoopUtils]: For program point L14-2(lines 13 18) no Hoare annotation was computed. [2021-05-02 11:51:51,768 INFO L198 CegarLoopUtils]: For program point __VERIFIER_assertEXIT(lines 13 18) no Hoare annotation was computed. [2021-05-02 11:51:51,768 INFO L198 CegarLoopUtils]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 15) no Hoare annotation was computed. [2021-05-02 11:51:51,782 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.05 11:51:51 BoogieIcfgContainer [2021-05-02 11:51:51,782 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-02 11:51:51,784 INFO L168 Benchmark]: Toolchain (without parser) took 1038.33 ms. Allocated memory is still 186.6 MB. Free memory was 151.6 MB in the beginning and 80.8 MB in the end (delta: 70.8 MB). Peak memory consumption was 70.2 MB. Max. memory is 8.0 GB. [2021-05-02 11:51:51,785 INFO L168 Benchmark]: CDTParser took 0.09 ms. Allocated memory is still 186.6 MB. Free memory is still 168.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-02 11:51:51,786 INFO L168 Benchmark]: CACSL2BoogieTranslator took 131.23 ms. Allocated memory is still 186.6 MB. Free memory was 151.5 MB in the beginning and 142.1 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-05-02 11:51:51,787 INFO L168 Benchmark]: Boogie Preprocessor took 40.67 ms. Allocated memory is still 186.6 MB. Free memory was 142.1 MB in the beginning and 169.8 MB in the end (delta: -27.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2021-05-02 11:51:51,788 INFO L168 Benchmark]: RCFGBuilder took 227.67 ms. Allocated memory is still 186.6 MB. Free memory was 169.4 MB in the beginning and 155.2 MB in the end (delta: 14.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2021-05-02 11:51:51,788 INFO L168 Benchmark]: TraceAbstraction took 633.42 ms. Allocated memory is still 186.6 MB. Free memory was 155.2 MB in the beginning and 80.8 MB in the end (delta: 74.5 MB). Peak memory consumption was 74.4 MB. Max. memory is 8.0 GB. [2021-05-02 11:51:51,794 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 186.6 MB. Free memory is still 168.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 131.23 ms. Allocated memory is still 186.6 MB. Free memory was 151.5 MB in the beginning and 142.1 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 40.67 ms. Allocated memory is still 186.6 MB. Free memory was 142.1 MB in the beginning and 169.8 MB in the end (delta: -27.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 227.67 ms. Allocated memory is still 186.6 MB. Free memory was 169.4 MB in the beginning and 155.2 MB in the end (delta: 14.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 633.42 ms. Allocated memory is still 186.6 MB. Free memory was 155.2 MB in the beginning and 80.8 MB in the end (delta: 74.5 MB). Peak memory consumption was 74.4 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 15]: 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, 21 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 446.9ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 5.3ms, AutomataDifference: 160.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 127.7ms, InitialAbstractionConstructionTime: 6.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 7 SDtfs, 9 SDslu, 21 SDs, 0 SdLazy, 24 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 27.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 159.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=0, InterpolantAutomatonStates: 7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 5.4ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 7 LocationsWithAnnotation, 8 PreInvPairs, 11 NumberOfFragments, 119 HoareAnnotationTreeSize, 8 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 21.3ms HoareSimplificationTime, 7 FomulaSimplificationsInter, 136 FormulaSimplificationTreeSizeReductionInter, 100.9ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 4.5ms SsaConstructionTime, 31.9ms SatisfiabilityAnalysisTime, 152.4ms InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 90 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 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: 24]: Loop Invariant Derived loop invariant: (2 * x + 4294967296 * (sn / 4294967296) < sn + 4294967296 * (x * 2 / 4294967296) + 1 && sn + 4294967296 * (x * 2 / 4294967296) <= 2 * x + 4294967296 * (sn / 4294967296)) && sn <= 2 * x RESULT: Ultimate proved your program to be correct! Received shutdown request...