/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-zilu/benchmark33_linear.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-1a84f73 [2021-05-01 00:23:22,687 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-01 00:23:22,689 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-01 00:23:22,741 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-05-01 00:23:22,758 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-01 00:23:22,760 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-01 00:23:22,761 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-01 00:23:22,762 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-01 00:23:22,764 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-01 00:23:22,765 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-01 00:23:22,767 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-01 00:23:22,772 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-01 00:23:22,773 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-01 00:23:22,774 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-01 00:23:22,775 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-01 00:23:22,776 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-01 00:23:22,781 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-01 00:23:22,787 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-01 00:23:22,788 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-01 00:23:22,789 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-01 00:23:22,792 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 [2021-05-01 00:23:22,821 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-01 00:23:22,821 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-01 00:23:22,824 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-05-01 00:23:22,824 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-05-01 00:23:22,824 INFO L138 SettingsManager]: * Use SBE=true [2021-05-01 00:23:22,824 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-01 00:23:22,824 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-01 00:23:22,824 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-01 00:23:22,824 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-01 00:23:22,825 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-01 00:23:22,825 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-01 00:23:22,825 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-01 00:23:22,825 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-01 00:23:22,826 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-01 00:23:22,826 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-01 00:23:22,826 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-01 00:23:22,826 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-01 00:23:22,826 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-01 00:23:22,826 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-01 00:23:22,826 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-01 00:23:22,826 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-01 00:23:22,827 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-01 00:23:22,827 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-05-01 00:23:22,827 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-05-01 00:23:22,827 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-01 00:23:22,827 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-05-01 00:23:22,827 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-01 00:23:22,827 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-05-01 00:23:22,827 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-05-01 00:23:23,103 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-01 00:23:23,125 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-01 00:23:23,127 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-01 00:23:23,128 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-01 00:23:23,128 INFO L275 PluginConnector]: CDTParser initialized [2021-05-01 00:23:23,129 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-zilu/benchmark33_linear.i [2021-05-01 00:23:23,171 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/87788c37a/4dfe74f3b4224df8833716fa206f76ba/FLAGbb67c65ba [2021-05-01 00:23:23,565 INFO L306 CDTParser]: Found 1 translation units. [2021-05-01 00:23:23,566 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-zilu/benchmark33_linear.i [2021-05-01 00:23:23,570 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/87788c37a/4dfe74f3b4224df8833716fa206f76ba/FLAGbb67c65ba [2021-05-01 00:23:23,586 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/87788c37a/4dfe74f3b4224df8833716fa206f76ba [2021-05-01 00:23:23,589 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-01 00:23:23,591 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-05-01 00:23:23,595 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-01 00:23:23,595 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-01 00:23:23,598 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-01 00:23:23,599 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.05 12:23:23" (1/1) ... [2021-05-01 00:23:23,600 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@435aa264 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 12:23:23, skipping insertion in model container [2021-05-01 00:23:23,600 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.05 12:23:23" (1/1) ... [2021-05-01 00:23:23,605 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-01 00:23:23,614 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-01 00:23:23,703 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/benchmark33_linear.i[868,881] [2021-05-01 00:23:23,710 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-01 00:23:23,717 INFO L203 MainTranslator]: Completed pre-run [2021-05-01 00:23:23,768 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/benchmark33_linear.i[868,881] [2021-05-01 00:23:23,770 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-01 00:23:23,781 INFO L208 MainTranslator]: Completed translation [2021-05-01 00:23:23,781 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 12:23:23 WrapperNode [2021-05-01 00:23:23,781 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-01 00:23:23,782 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-01 00:23:23,782 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-01 00:23:23,783 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-01 00:23:23,790 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 12:23:23" (1/1) ... [2021-05-01 00:23:23,790 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 12:23:23" (1/1) ... [2021-05-01 00:23:23,796 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 12:23:23" (1/1) ... [2021-05-01 00:23:23,796 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 12:23:23" (1/1) ... [2021-05-01 00:23:23,802 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 12:23:23" (1/1) ... [2021-05-01 00:23:23,806 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 12:23:23" (1/1) ... [2021-05-01 00:23:23,810 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 12:23:23" (1/1) ... [2021-05-01 00:23:23,812 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-01 00:23:23,813 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-01 00:23:23,813 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-01 00:23:23,813 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-01 00:23:23,814 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 12:23:23" (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 [2021-05-01 00:23:23,865 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-01 00:23:23,865 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-01 00:23:23,865 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-01 00:23:23,865 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-01 00:23:23,865 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-01 00:23:23,865 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-01 00:23:23,865 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-05-01 00:23:23,865 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-05-01 00:23:23,866 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-01 00:23:23,866 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-01 00:23:23,866 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-05-01 00:23:23,866 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2021-05-01 00:23:23,867 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-01 00:23:23,867 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-01 00:23:23,867 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-01 00:23:23,867 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-01 00:23:23,867 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-01 00:23:23,867 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-01 00:23:23,868 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-01 00:23:23,868 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-01 00:23:24,071 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-01 00:23:24,072 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-05-01 00:23:24,072 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.05 12:23:24 BoogieIcfgContainer [2021-05-01 00:23:24,073 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-01 00:23:24,073 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-01 00:23:24,074 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-01 00:23:24,075 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-01 00:23:24,075 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.05 12:23:23" (1/3) ... [2021-05-01 00:23:24,076 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f5a1a58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.05 12:23:24, skipping insertion in model container [2021-05-01 00:23:24,076 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 12:23:23" (2/3) ... [2021-05-01 00:23:24,076 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f5a1a58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.05 12:23:24, skipping insertion in model container [2021-05-01 00:23:24,076 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.05 12:23:24" (3/3) ... [2021-05-01 00:23:24,086 INFO L111 eAbstractionObserver]: Analyzing ICFG benchmark33_linear.i [2021-05-01 00:23:24,090 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-05-01 00:23:24,092 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-01 00:23:24,119 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-01 00:23:24,136 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-01 00:23:24,137 INFO L377 AbstractCegarLoop]: Hoare is true [2021-05-01 00:23:24,137 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-05-01 00:23:24,137 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-01 00:23:24,137 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-01 00:23:24,137 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-01 00:23:24,137 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-01 00:23:24,137 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-01 00:23:24,155 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) [2021-05-01 00:23:24,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-05-01 00:23:24,158 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 00:23:24,159 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 00:23:24,159 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 00:23:24,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 00:23:24,165 INFO L82 PathProgramCache]: Analyzing trace with hash -304977768, now seen corresponding path program 1 times [2021-05-01 00:23:24,171 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-01 00:23:24,171 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723583278] [2021-05-01 00:23:24,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 00:23:24,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 00:23:24,314 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 00:23:24,315 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 00:23:24,316 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 00:23:24,317 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 00:23:24,324 INFO L142 QuantifierPusher]: treesize reduction 10, result has 33.3 percent of original size [2021-05-01 00:23:24,324 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-05-01 00:23:24,335 INFO L142 QuantifierPusher]: treesize reduction 10, result has 23.1 percent of original size [2021-05-01 00:23:24,336 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 00:23:24,343 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 00:23:24,343 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 00:23:24,356 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 00:23:24,356 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 00:23:24,370 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 00:23:24,371 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 00:23:24,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 00:23:24,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 00:23:24,430 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 00:23:24,431 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 00:23:24,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 00:23:24,433 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-01 00:23:24,433 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723583278] [2021-05-01 00:23:24,434 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723583278] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 00:23:24,434 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 00:23:24,434 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-01 00:23:24,435 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866527108] [2021-05-01 00:23:24,437 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-01 00:23:24,437 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-01 00:23:24,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-01 00:23:24,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-05-01 00:23:24,449 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 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 5 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) [2021-05-01 00:23:24,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 00:23:24,663 INFO L93 Difference]: Finished difference Result 32 states and 36 transitions. [2021-05-01 00:23:24,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-05-01 00:23:24,664 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 5 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 [2021-05-01 00:23:24,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 00:23:24,668 INFO L225 Difference]: With dead ends: 32 [2021-05-01 00:23:24,668 INFO L226 Difference]: Without dead ends: 0 [2021-05-01 00:23:24,670 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 193.8ms TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-05-01 00:23:24,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-05-01 00:23:24,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-05-01 00:23:24,686 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) [2021-05-01 00:23:24,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-05-01 00:23:24,687 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2021-05-01 00:23:24,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 00:23:24,687 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-05-01 00:23:24,687 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 5 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) [2021-05-01 00:23:24,688 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-05-01 00:23:24,688 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-01 00:23:24,689 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-01 00:23:24,690 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-05-01 00:23:24,830 INFO L198 CegarLoopUtils]: For program point reach_errorEXIT(line 11) no Hoare annotation was computed. [2021-05-01 00:23:24,830 INFO L198 CegarLoopUtils]: For program point reach_errorENTRY(line 11) no Hoare annotation was computed. [2021-05-01 00:23:24,830 INFO L198 CegarLoopUtils]: For program point L11-1(line 11) no Hoare annotation was computed. [2021-05-01 00:23:24,830 INFO L198 CegarLoopUtils]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2021-05-01 00:23:24,831 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)|)) [2021-05-01 00:23:24,831 INFO L198 CegarLoopUtils]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2021-05-01 00:23:24,831 INFO L198 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-05-01 00:23:24,832 INFO L201 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-05-01 00:23:24,832 INFO L201 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-05-01 00:23:24,832 INFO L198 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-05-01 00:23:24,833 INFO L201 CegarLoopUtils]: At program point mainENTRY(lines 19 27) the Hoare annotation is: true [2021-05-01 00:23:24,833 INFO L198 CegarLoopUtils]: For program point L25(line 25) no Hoare annotation was computed. [2021-05-01 00:23:24,833 INFO L198 CegarLoopUtils]: For program point mainEXIT(lines 19 27) no Hoare annotation was computed. [2021-05-01 00:23:24,833 INFO L198 CegarLoopUtils]: For program point L21(line 21) no Hoare annotation was computed. [2021-05-01 00:23:24,833 INFO L194 CegarLoopUtils]: At program point L22-2(lines 22 24) the Hoare annotation is: (< 0 (+ main_~x~0 1)) [2021-05-01 00:23:24,833 INFO L194 CegarLoopUtils]: At program point L22-3(lines 22 24) the Hoare annotation is: (< 99 main_~x~0) [2021-05-01 00:23:24,833 INFO L198 CegarLoopUtils]: For program point mainFINAL(lines 19 27) no Hoare annotation was computed. [2021-05-01 00:23:24,833 INFO L198 CegarLoopUtils]: For program point L16(line 16) no Hoare annotation was computed. [2021-05-01 00:23:24,833 INFO L198 CegarLoopUtils]: For program point L15(lines 15 17) no Hoare annotation was computed. [2021-05-01 00:23:24,833 INFO L201 CegarLoopUtils]: At program point __VERIFIER_assertENTRY(lines 14 18) the Hoare annotation is: true [2021-05-01 00:23:24,834 INFO L198 CegarLoopUtils]: For program point L15-2(lines 14 18) no Hoare annotation was computed. [2021-05-01 00:23:24,834 INFO L198 CegarLoopUtils]: For program point __VERIFIER_assertEXIT(lines 14 18) no Hoare annotation was computed. [2021-05-01 00:23:24,834 INFO L198 CegarLoopUtils]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 16) no Hoare annotation was computed. [2021-05-01 00:23:24,845 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.05 12:23:24 BoogieIcfgContainer [2021-05-01 00:23:24,845 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-01 00:23:24,848 INFO L168 Benchmark]: Toolchain (without parser) took 1254.72 ms. Allocated memory is still 208.7 MB. Free memory was 172.4 MB in the beginning and 113.2 MB in the end (delta: 59.1 MB). Peak memory consumption was 60.1 MB. Max. memory is 8.0 GB. [2021-05-01 00:23:24,848 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 208.7 MB. Free memory is still 188.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-01 00:23:24,849 INFO L168 Benchmark]: CACSL2BoogieTranslator took 186.95 ms. Allocated memory is still 208.7 MB. Free memory was 172.2 MB in the beginning and 190.8 MB in the end (delta: -18.6 MB). Peak memory consumption was 11.9 MB. Max. memory is 8.0 GB. [2021-05-01 00:23:24,849 INFO L168 Benchmark]: Boogie Preprocessor took 29.60 ms. Allocated memory is still 208.7 MB. Free memory was 190.8 MB in the beginning and 189.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-05-01 00:23:24,850 INFO L168 Benchmark]: RCFGBuilder took 259.58 ms. Allocated memory is still 208.7 MB. Free memory was 189.3 MB in the beginning and 176.2 MB in the end (delta: 13.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-05-01 00:23:24,850 INFO L168 Benchmark]: TraceAbstraction took 771.95 ms. Allocated memory is still 208.7 MB. Free memory was 175.6 MB in the beginning and 113.2 MB in the end (delta: 62.4 MB). Peak memory consumption was 61.9 MB. Max. memory is 8.0 GB. [2021-05-01 00:23:24,852 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 208.7 MB. Free memory is still 188.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 186.95 ms. Allocated memory is still 208.7 MB. Free memory was 172.2 MB in the beginning and 190.8 MB in the end (delta: -18.6 MB). Peak memory consumption was 11.9 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 29.60 ms. Allocated memory is still 208.7 MB. Free memory was 190.8 MB in the beginning and 189.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 259.58 ms. Allocated memory is still 208.7 MB. Free memory was 189.3 MB in the beginning and 176.2 MB in the end (delta: 13.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 771.95 ms. Allocated memory is still 208.7 MB. Free memory was 175.6 MB in the beginning and 113.2 MB in the end (delta: 62.4 MB). Peak memory consumption was 61.9 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: 554.4ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 14.6ms, AutomataDifference: 232.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 140.1ms, InitialAbstractionConstructionTime: 6.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 15 SDtfs, 19 SDslu, 26 SDs, 0 SdLazy, 38 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 53.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 193.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred 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: 6.5ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 7 LocationsWithAnnotation, 8 PreInvPairs, 9 NumberOfFragments, 37 HoareAnnotationTreeSize, 8 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 38.9ms HoareSimplificationTime, 7 FomulaSimplificationsInter, 106 FormulaSimplificationTreeSizeReductionInter, 93.3ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 8.5ms SsaConstructionTime, 27.0ms SatisfiabilityAnalysisTime, 185.0ms InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 11 ConstructedInterpolants, 0 QuantifiedInterpolants, 47 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: 22]: Loop Invariant Derived loop invariant: 0 < x + 1 RESULT: Ultimate proved your program to be correct! Received shutdown request...