/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-lit/css2003.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-19 18:01:06,806 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-19 18:01:06,812 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-19 18:01:06,867 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-19 18:01:06,868 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-19 18:01:06,872 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-19 18:01:06,876 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-19 18:01:06,885 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-19 18:01:06,888 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-19 18:01:06,912 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-19 18:01:06,914 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-19 18:01:06,917 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-19 18:01:06,921 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-19 18:01:06,923 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-19 18:01:06,933 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-19 18:01:06,938 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-19 18:01:06,940 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-19 18:01:06,941 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-19 18:01:06,946 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-19 18:01:06,948 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-19 18:01:06,955 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-19 18:01:06,957 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-19 18:01:06,958 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-19 18:01:06,960 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-19 18:01:06,963 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-19 18:01:06,973 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-19 18:01:06,974 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-19 18:01:06,974 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-19 18:01:06,975 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 [2021-02-19 18:01:07,004 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-19 18:01:07,004 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-19 18:01:07,006 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-02-19 18:01:07,006 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-02-19 18:01:07,006 INFO L138 SettingsManager]: * Use SBE=true [2021-02-19 18:01:07,007 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-19 18:01:07,007 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-19 18:01:07,007 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-19 18:01:07,007 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-19 18:01:07,008 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-19 18:01:07,008 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-19 18:01:07,008 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-19 18:01:07,009 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-19 18:01:07,009 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-19 18:01:07,009 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-19 18:01:07,009 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-19 18:01:07,010 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-19 18:01:07,010 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-19 18:01:07,010 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-02-19 18:01:07,011 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-19 18:01:07,011 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-19 18:01:07,011 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-19 18:01:07,011 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-02-19 18:01:07,012 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-02-19 18:01:07,012 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-02-19 18:01:07,012 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-02-19 18:01:07,013 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-19 18:01:07,013 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-02-19 18:01:07,013 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-19 18:01:07,557 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-19 18:01:07,604 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-19 18:01:07,608 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-19 18:01:07,610 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-19 18:01:07,610 INFO L275 PluginConnector]: CDTParser initialized [2021-02-19 18:01:07,612 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/css2003.i [2021-02-19 18:01:07,718 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5656d3173/c6661b366a0341908d34fb59c9ae6a00/FLAG043880666 [2021-02-19 18:01:08,371 INFO L306 CDTParser]: Found 1 translation units. [2021-02-19 18:01:08,372 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/css2003.i [2021-02-19 18:01:08,379 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5656d3173/c6661b366a0341908d34fb59c9ae6a00/FLAG043880666 [2021-02-19 18:01:08,749 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5656d3173/c6661b366a0341908d34fb59c9ae6a00 [2021-02-19 18:01:08,752 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-19 18:01:08,766 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-19 18:01:08,768 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-19 18:01:08,768 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-19 18:01:08,772 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-19 18:01:08,773 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.02 06:01:08" (1/1) ... [2021-02-19 18:01:08,775 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5dcd6208 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 06:01:08, skipping insertion in model container [2021-02-19 18:01:08,775 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.02 06:01:08" (1/1) ... [2021-02-19 18:01:08,783 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-19 18:01:08,799 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-19 18:01:08,959 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/css2003.i[895,908] [2021-02-19 18:01:08,971 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-19 18:01:08,982 INFO L203 MainTranslator]: Completed pre-run [2021-02-19 18:01:08,997 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/css2003.i[895,908] [2021-02-19 18:01:09,001 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-19 18:01:09,020 INFO L208 MainTranslator]: Completed translation [2021-02-19 18:01:09,020 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 06:01:09 WrapperNode [2021-02-19 18:01:09,021 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-19 18:01:09,022 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-19 18:01:09,022 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-19 18:01:09,023 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-19 18:01:09,037 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 06:01:09" (1/1) ... [2021-02-19 18:01:09,037 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 06:01:09" (1/1) ... [2021-02-19 18:01:09,045 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 06:01:09" (1/1) ... [2021-02-19 18:01:09,046 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 06:01:09" (1/1) ... [2021-02-19 18:01:09,052 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 06:01:09" (1/1) ... [2021-02-19 18:01:09,056 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 06:01:09" (1/1) ... [2021-02-19 18:01:09,058 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 06:01:09" (1/1) ... [2021-02-19 18:01:09,060 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-19 18:01:09,061 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-19 18:01:09,062 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-19 18:01:09,062 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-19 18:01:09,063 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 06:01:09" (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 [2021-02-19 18:01:09,252 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-19 18:01:09,252 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-19 18:01:09,253 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-19 18:01:09,253 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-19 18:01:09,253 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-19 18:01:09,253 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-19 18:01:09,254 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-19 18:01:09,254 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-19 18:01:09,254 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-02-19 18:01:09,255 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-02-19 18:01:09,255 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-19 18:01:09,255 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-19 18:01:09,256 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-19 18:01:09,257 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-19 18:01:09,257 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-19 18:01:09,258 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-19 18:01:09,258 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-19 18:01:09,258 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-19 18:01:09,258 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-19 18:01:09,259 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-19 18:01:09,259 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-19 18:01:09,259 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-19 18:01:09,559 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-19 18:01:09,559 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-02-19 18:01:09,561 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.02 06:01:09 BoogieIcfgContainer [2021-02-19 18:01:09,561 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-19 18:01:09,562 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-19 18:01:09,563 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-19 18:01:09,566 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-19 18:01:09,567 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.02 06:01:08" (1/3) ... [2021-02-19 18:01:09,568 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14022f09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.02 06:01:09, skipping insertion in model container [2021-02-19 18:01:09,568 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 06:01:09" (2/3) ... [2021-02-19 18:01:09,568 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14022f09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.02 06:01:09, skipping insertion in model container [2021-02-19 18:01:09,568 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.02 06:01:09" (3/3) ... [2021-02-19 18:01:09,570 INFO L111 eAbstractionObserver]: Analyzing ICFG css2003.i [2021-02-19 18:01:09,578 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-02-19 18:01:09,583 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-19 18:01:09,634 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-19 18:01:09,701 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-19 18:01:09,704 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-19 18:01:09,704 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-02-19 18:01:09,705 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-19 18:01:09,705 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-19 18:01:09,705 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-19 18:01:09,705 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-19 18:01:09,705 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-19 18:01:09,741 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2021-02-19 18:01:09,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-02-19 18:01:09,747 INFO L414 BasicCegarLoop]: Found error trace [2021-02-19 18:01:09,748 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 18:01:09,749 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-19 18:01:09,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 18:01:09,756 INFO L82 PathProgramCache]: Analyzing trace with hash 255759161, now seen corresponding path program 1 times [2021-02-19 18:01:09,767 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 18:01:09,768 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217813709] [2021-02-19 18:01:09,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 18:01:09,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 18:01:10,016 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:01:10,018 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 18:01:10,019 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:01:10,020 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-19 18:01:10,043 WARN L141 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size [2021-02-19 18:01:10,045 WARN L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-02-19 18:01:10,066 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:01:10,067 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-02-19 18:01:10,088 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:01:10,089 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-19 18:01:10,100 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:01:10,101 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-19 18:01:10,113 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:01:10,113 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 18:01:10,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-19 18:01:10,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 18:01:10,176 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:01:10,177 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 18:01:10,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 18:01:10,182 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217813709] [2021-02-19 18:01:10,183 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 18:01:10,184 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-02-19 18:01:10,185 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873040191] [2021-02-19 18:01:10,190 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-19 18:01:10,191 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 18:01:10,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-19 18:01:10,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-02-19 18:01:10,214 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 8 states. [2021-02-19 18:01:10,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 18:01:10,555 INFO L93 Difference]: Finished difference Result 34 states and 42 transitions. [2021-02-19 18:01:10,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-02-19 18:01:10,558 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 12 [2021-02-19 18:01:10,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 18:01:10,566 INFO L225 Difference]: With dead ends: 34 [2021-02-19 18:01:10,566 INFO L226 Difference]: Without dead ends: 0 [2021-02-19 18:01:10,570 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-02-19 18:01:10,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-02-19 18:01:10,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-02-19 18:01:10,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-02-19 18:01:10,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-02-19 18:01:10,600 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2021-02-19 18:01:10,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 18:01:10,600 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-02-19 18:01:10,600 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-02-19 18:01:10,600 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-02-19 18:01:10,601 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-02-19 18:01:10,601 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-19 18:01:10,603 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-02-19 18:01:10,793 INFO L189 CegarLoopUtils]: For program point reach_errorEXIT(line 12) no Hoare annotation was computed. [2021-02-19 18:01:10,793 INFO L189 CegarLoopUtils]: For program point reach_errorENTRY(line 12) no Hoare annotation was computed. [2021-02-19 18:01:10,793 INFO L189 CegarLoopUtils]: For program point L12-1(line 12) no Hoare annotation was computed. [2021-02-19 18:01:10,794 INFO L189 CegarLoopUtils]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2021-02-19 18:01:10,794 INFO L185 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)|)) [2021-02-19 18:01:10,794 INFO L189 CegarLoopUtils]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2021-02-19 18:01:10,794 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-02-19 18:01:10,795 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-19 18:01:10,795 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-02-19 18:01:10,795 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-02-19 18:01:10,795 INFO L189 CegarLoopUtils]: For program point L15(line 15) no Hoare annotation was computed. [2021-02-19 18:01:10,795 INFO L189 CegarLoopUtils]: For program point assume_abort_if_notENTRY(lines 14 16) no Hoare annotation was computed. [2021-02-19 18:01:10,796 INFO L189 CegarLoopUtils]: For program point L15-2(lines 14 16) no Hoare annotation was computed. [2021-02-19 18:01:10,796 INFO L189 CegarLoopUtils]: For program point assume_abort_if_notEXIT(lines 14 16) no Hoare annotation was computed. [2021-02-19 18:01:10,796 INFO L185 CegarLoopUtils]: At program point L34-1(lines 30 35) the Hoare annotation is: (or (let ((.cse0 (+ main_~i~0 main_~k~0))) (and (<= 2 main_~i~0) (<= .cse0 2) (<= 1 .cse0))) (and (<= main_~k~0 1) (<= 0 main_~k~0) (= main_~i~0 1))) [2021-02-19 18:01:10,796 INFO L192 CegarLoopUtils]: At program point mainENTRY(lines 24 37) the Hoare annotation is: true [2021-02-19 18:01:10,796 INFO L189 CegarLoopUtils]: For program point L29(line 29) no Hoare annotation was computed. [2021-02-19 18:01:10,797 INFO L189 CegarLoopUtils]: For program point L30-2(lines 30 35) no Hoare annotation was computed. [2021-02-19 18:01:10,797 INFO L189 CegarLoopUtils]: For program point mainEXIT(lines 24 37) no Hoare annotation was computed. [2021-02-19 18:01:10,797 INFO L189 CegarLoopUtils]: For program point mainFINAL(lines 24 37) no Hoare annotation was computed. [2021-02-19 18:01:10,797 INFO L185 CegarLoopUtils]: At program point L34(line 34) the Hoare annotation is: (let ((.cse0 (+ main_~i~0 main_~k~0))) (and (<= 2 main_~i~0) (<= .cse0 2) (<= 1 .cse0))) [2021-02-19 18:01:10,797 INFO L189 CegarLoopUtils]: For program point L18-2(lines 17 22) no Hoare annotation was computed. [2021-02-19 18:01:10,798 INFO L192 CegarLoopUtils]: At program point __VERIFIER_assertENTRY(lines 17 22) the Hoare annotation is: true [2021-02-19 18:01:10,798 INFO L189 CegarLoopUtils]: For program point __VERIFIER_assertEXIT(lines 17 22) no Hoare annotation was computed. [2021-02-19 18:01:10,798 INFO L189 CegarLoopUtils]: For program point L19(line 19) no Hoare annotation was computed. [2021-02-19 18:01:10,798 INFO L189 CegarLoopUtils]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-02-19 18:01:10,798 INFO L189 CegarLoopUtils]: For program point L18(lines 18 20) no Hoare annotation was computed. [2021-02-19 18:01:10,817 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.02 06:01:10 BoogieIcfgContainer [2021-02-19 18:01:10,818 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-19 18:01:10,819 INFO L168 Benchmark]: Toolchain (without parser) took 2064.78 ms. Allocated memory is still 154.1 MB. Free memory was 134.1 MB in the beginning and 105.5 MB in the end (delta: 28.7 MB). Peak memory consumption was 28.0 MB. Max. memory is 8.0 GB. [2021-02-19 18:01:10,820 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 154.1 MB. Free memory was 125.9 MB in the beginning and 125.8 MB in the end (delta: 74.6 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-02-19 18:01:10,821 INFO L168 Benchmark]: CACSL2BoogieTranslator took 253.52 ms. Allocated memory is still 154.1 MB. Free memory was 133.1 MB in the beginning and 123.5 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-02-19 18:01:10,822 INFO L168 Benchmark]: Boogie Preprocessor took 38.41 ms. Allocated memory is still 154.1 MB. Free memory was 123.3 MB in the beginning and 122.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-19 18:01:10,823 INFO L168 Benchmark]: RCFGBuilder took 499.43 ms. Allocated memory is still 154.1 MB. Free memory was 122.0 MB in the beginning and 124.9 MB in the end (delta: -2.9 MB). Peak memory consumption was 4.1 MB. Max. memory is 8.0 GB. [2021-02-19 18:01:10,824 INFO L168 Benchmark]: TraceAbstraction took 1255.29 ms. Allocated memory is still 154.1 MB. Free memory was 124.3 MB in the beginning and 105.5 MB in the end (delta: 18.9 MB). Peak memory consumption was 19.7 MB. Max. memory is 8.0 GB. [2021-02-19 18:01:10,828 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 154.1 MB. Free memory was 125.9 MB in the beginning and 125.8 MB in the end (delta: 74.6 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 253.52 ms. Allocated memory is still 154.1 MB. Free memory was 133.1 MB in the beginning and 123.5 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 38.41 ms. Allocated memory is still 154.1 MB. Free memory was 123.3 MB in the beginning and 122.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 499.43 ms. Allocated memory is still 154.1 MB. Free memory was 122.0 MB in the beginning and 124.9 MB in the end (delta: -2.9 MB). Peak memory consumption was 4.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1255.29 ms. Allocated memory is still 154.1 MB. Free memory was 124.3 MB in the beginning and 105.5 MB in the end (delta: 18.9 MB). Peak memory consumption was 19.7 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 30]: Loop Invariant Derived loop invariant: ((2 <= i && i + k <= 2) && 1 <= i + k) || ((k <= 1 && 0 <= k) && i == 1) - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 27 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.9s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 15 SDtfs, 21 SDslu, 34 SDs, 0 SdLazy, 53 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 8 PreInvPairs, 11 NumberOfFragments, 68 HoareAnnotationTreeSize, 8 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 128 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 11 ConstructedInterpolants, 0 QuantifiedInterpolants, 715 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 RESULT: Ultimate proved your program to be correct! Received shutdown request...